Exploring the chemical shield: the multifaceted world of chemical resistant board

1. Chemical resistant board: a solid barrier in the chemical world
In the vast territory of the chemical industry, from precise laboratory research to large-scale chemical production, from the treatment of corrosive gases to the storage and transportation of strong acid and alkali solutions, various chemical substances are always interacting with the materials in contact in subtle or violent ways. In these scenarios, chemical corrosion-resistant board, as a vital material, silently plays a key role in ensuring production safety, extending equipment life, and maintaining experimental accuracy. It is like a solid barrier that blocks the erosion of chemical substances and ensures that various processes and operations can proceed smoothly. ​
In the laboratory, when researchers conduct various chemical experiments, they need to use various experimental instruments and equipment, such as reactors, burettes, and liquid storage bottles. If these instruments react with chemical reagents and are corroded, it may affect the accuracy of the experimental results and even cause the experiment to fail. Experimental instruments made of chemical corrosion-resistant boards can effectively avoid this situation, allowing researchers to focus on the experiment itself and promote the continuous progress of scientific research.
2. Various chemical-resistant heroes
In the vast world of materials science, the chemical-resistant plate family is full of talents, and each member shines in different fields with its unique performance. They are like a group of superheroes with special skills, each guarding the stable operation of equipment and processes on their own "battlefield". Now, let us walk into this wonderful world of chemical-resistant heroes and appreciate their unique charm.
(I) Polytetrafluoroethylene plate (PTFE plate): "King of chemical inertness"
Polytetrafluoroethylene plate, known as the "plastic king" in the world, is a leader in chemical corrosion-resistant materials and can be called the "king of chemical inertness". It is made of tetrafluoroethylene through polymerization and has an extremely stable molecular structure, as if it has built an indestructible "armor" for itself, which can resist the "attack" of almost all chemical substances. In addition to the two "special enemies" of molten alkali metals and elemental fluorine, common corrosive substances such as strong acids, strong alkalis, and aqua regia can only stay away from polytetrafluoroethylene plates and it is difficult to cause any damage to them.​
This extraordinary chemical resistance makes polytetrafluoroethylene sheets popular in many fields. In the chemical industry, it is widely used to manufacture the linings of various reactors, pipes, and valves. These linings are like a solid "protective film" to ensure that chemical equipment will not be corroded when handling highly corrosive chemicals, thereby extending the service life of the equipment and reducing production costs. For example, in factories that produce strong acids such as sulfuric acid and hydrochloric acid, reactors lined with polytetrafluoroethylene sheets can stably withstand the erosion of strong acids and ensure the smooth progress of production. ​
In the electronics field, polytetrafluoroethylene sheets have become an ideal material for manufacturing key components such as printed circuit boards and cable insulation layers due to their good electrical insulation properties and chemical resistance. It can not only effectively prevent electronic components from being corroded by chemicals, but also ensure the stable transmission of electronic signals, providing strong support for the high-performance operation of electronic equipment. ​
In the medical field, polytetrafluoroethylene sheets are also very useful. Because of its good biocompatibility and chemical stability, it will not have adverse reactions to human tissues, so it is often used to manufacture implantable medical devices such as artificial blood vessels and heart valves. These devices need to be in contact with various body fluids inside the human body for a long time. The excellent performance of polytetrafluoroethylene sheets enables them to be competent for this arduous task and protect the health of patients. In addition, polytetrafluoroethylene sheets also have the characteristics of low friction coefficient and are not easy to bond with other substances, which makes it widely used in some occasions where friction needs to be reduced and adhesion needs to be prevented, such as mechanical seals, bearings, etc. ​
(II) High-density polyethylene sheets (HDPE sheets): "all-rounders" in the industrial field​
High-density polyethylene sheets are well-deserved "all-rounders" in the industrial field, and play an important role in many industries with their excellent comprehensive performance. It is made of ethylene polymerization and has excellent chemical corrosion resistance. It can easily cope with the erosion of most acids, alkalis, salts and other chemical substances. Whether in the strongly acidic chemical raw material storage environment or in the alkaline sewage treatment pool, HDPE sheets can maintain stable chemical properties, not be corroded, and show strong "strike resistance". ​
In the chemical industry, HDPE sheets are often used to make chemical storage tanks, reaction vessels and other equipment. These devices need to store or process various chemical raw materials for a long time, and the corrosion resistance of HDPE boards ensures that they can operate safely and stably. Compared with traditional metal materials, HDPE boards are not only cheaper, but also lighter, and easier to install and maintain.
In the field of environmental protection, HDPE boards also have excellent performance. It is widely used in anti-seepage systems of landfills, pool linings of sewage treatment plants, etc. Landfills contain a variety of complex organic and inorganic pollutants, which produce corrosive leachate during decomposition. As an anti-seepage membrane, HDPE boards can effectively block the leakage of leachate and prevent pollution of soil and groundwater. In sewage treatment plants, pool linings made of HDPE boards can resist the erosion of various chemicals in sewage, ensure the normal operation of sewage treatment equipment, and improve sewage treatment efficiency. ​
In the field of sewage treatment, HDPE boards are also an indispensable and important material. It is used to manufacture various sewage pipes, grating plates, etc. Sewage contains a large amount of impurities, acid and alkali substances and microorganisms, which are highly corrosive to pipes and equipment. With its chemical corrosion resistance, wear resistance and good mechanical properties, HDPE board can operate stably for a long time in harsh sewage environment, ensuring the smooth transportation and treatment of sewage. Moreover, HDPE board also has good environmental protection performance, can be recycled and reused, and conforms to modern environmental protection concepts. This is one of the important reasons why it is widely used in the fields of environmental protection and sewage treatment. ​
(III) Polypropylene PP board: "stable guard" of the chemical industry​
Polypropylene PP board is a reliable "stable guard" in the chemical industry. Its excellent corrosion resistance provides a solid guarantee for the stable operation of chemical production. PP board is a thermoplastic plastic with a very stable molecular structure, which gives it good corrosion resistance to most acids and alkalis. In various acid and alkali media within a certain concentration range, PP board can remain stable for a long time without obvious chemical reactions or corrosion damage. ​
In the field of chemical storage, PP board is widely used to make various storage tanks and storage tanks. These storage tanks and storage tanks are used to store various chemical raw materials and products, such as sulfuric acid, hydrochloric acid, sodium hydroxide, etc. The corrosion resistance of PP boards allows them to store these corrosive substances safely, preventing leakage and pollution. At the same time, PP boards are also light in weight and high in strength, which makes them easy to install and carry, reducing the equipment installation and maintenance costs of chemical companies. ​
PP boards also have important applications in chemical transportation equipment. For example, chemical pipelines are an indispensable part of chemical production, which are responsible for transporting various chemicals from one place to another. Chemical pipelines made of PP boards have good corrosion resistance and wear resistance, and can resist the erosion and friction of chemicals during transportation, ensuring the long-term stable operation of the pipeline. In addition, PP boards also have good weldability, which facilitates the connection and installation of pipelines and improves construction efficiency. In some large chemical parks, PP board pipelines are widely used in material conveying systems within the park, providing a guarantee for the continuity of chemical production. ​
In addition to storage and transportation equipment, PP boards are also often used to make some auxiliary equipment in chemical production, such as agitators, filters, etc. These equipment need to come into contact with various chemicals during work, and the corrosion resistance of PP boards enables them to work normally, improving the efficiency and quality of chemical production. Moreover, as an environmentally friendly material, PP board will not produce harmful substances during use, is environmentally friendly, and meets the requirements of sustainable development of the chemical industry. ​
(IV) Acid-resistant board: the "guardian" of special environments​
Acid-resistant board is a "guardian" specially designed to cope with special corrosive environments. It performs well in acid, alkali, salt and water vapor corrosion, and provides reliable protection for building roofs in metallurgy, chemical industry and other industries. Acid-resistant board is usually made of special resin and reinforcing materials, and is treated with special processes to give it excellent corrosion resistance. ​
In the metallurgical industry, a large amount of acidic gas and dust are generated during the production process, and these substances are highly corrosive to building roofs. As a building roofing material, acid-resistant board can effectively resist the erosion of these acidic substances and protect the structural safety of the building. For example, in metallurgical enterprises such as steel mills and copper smelters, acid-resistant boards are often used on the roofs of factory buildings. These acid-resistant boards can not only resist the corrosion of acidic gases such as sulfuric acid and hydrochloric acid, but also withstand harsh environmental conditions such as high temperature and high humidity, ensuring that the factory building will not have problems such as leakage and damage during long-term use.​
The chemical industry is also an important application field for acid-resistant boards. Chemical production involves many corrosive chemicals, and the building roof of the factory needs to have a high degree of corrosion resistance. Acid-resistant boards can withstand the corrosion of various acids, alkalis, salts and water vapor, providing safe and reliable protection for the production workshops of chemical companies. At the same time, acid-resistant boards also have good lighting performance, which can provide sufficient natural light for the workshop, improve the working environment and improve production efficiency. Some chemical plants use transparent or translucent acid-resistant boards as roofing materials, which not only meets the requirements of corrosion resistance, but also saves the cost of artificial lighting. ​
Acid-resistant boards also have good mechanical properties and weather resistance, can withstand certain wind pressure, snow pressure and hail impact, and are not easy to crack and age. Its installation is also very convenient, as simple as the installation method of ordinary color steel roofs and lighting boards, which makes it widely used in construction projects. In some newly built metallurgical and chemical projects, acid-resistant boards have become one of the first choices for building roofing materials, providing strong support for the development of these special industries.​
III. Performance Revealed​
(I) Super Strong Corrosion Resistance​
The reason why chemical corrosion resistant plates have super strong corrosion resistance is that there are profound material science principles behind them. From a microscopic perspective, different types of chemical corrosion resistant plates have their own unique molecular structures, and it is these structures that lay the foundation for them to resist the erosion of chemical substances. ​
Take polytetrafluoroethylene plates as an example. Its molecules are composed of carbon atoms and fluorine atoms closely connected to form an extremely stable C-F bond. Fluorine atoms have extremely high electronegativity, like a group of loyal "guards", tightly surrounding carbon atoms to form an indestructible "electron cloud barrier". This barrier makes it difficult for molecules or ions of other chemicals to approach carbon atoms, thereby effectively preventing chemical reactions from occurring. Whether it is a strongly oxidizing acid or a strongly reducing alkali, it is difficult to break through this "barrier" and cannot react chemically with polytetrafluoroethylene plates, thereby showing excellent chemical corrosion resistance. ​
Looking at high-density polyethylene plates, its molecules are long-chain structures formed by a large number of ethylene monomers connected by covalent bonds. These long-chain molecules are intertwined to form a dense physical structure. When chemicals come into contact with high-density polyethylene sheets, they must first break through the physical barriers between the molecular chains. Because the interaction between the molecular chains is strong and the molecular chains themselves have a certain degree of flexibility, they can provide a certain buffering effect on the invasion of chemical substances. At the same time, the carbon-carbon bonds and carbon-hydrogen bonds in polyethylene molecules are relatively stable and not easily destroyed by common chemicals, allowing high-density polyethylene sheets to remain stable in a variety of chemical environments and resist corrosion. ​
The corrosion resistance of polypropylene PP sheets comes from the methyl groups in its molecular structure. These methyl groups are evenly distributed on the polypropylene molecular chains. They not only increase the spacing between the molecular chains, reduce the interaction between the molecular chains, and make the molecular chains more flexible and active; they can also play a certain shielding role on the molecular chains, reducing the direct contact between chemical substances and molecular chains. When chemicals such as acids and alkalis try to react with polypropylene molecules, the methyl groups will hinder the attack of the chemicals, thereby protecting the molecular chains from being destroyed, so that the PP sheets show good corrosion resistance.​
For acid-resistant boards, their special resins and reinforcements are the key to giving them excellent resistance to acid, alkali, salt and water vapor corrosion. These special resin molecular structures contain a large number of stable chemical bonds, such as carbon-carbon double bonds, ester bonds, etc. They can remain relatively stable in chemical corrosion environments and are not prone to breakage and decomposition. At the same time, the addition of reinforcements further improves the mechanical properties and chemical stability of acid-resistant boards. The reinforcements and resins are closely combined through chemical bonds or physical adsorption to form a composite structure. This composite structure can not only enhance the strength and hardness of the acid-resistant board, but also disperse the erosion of chemical substances on the resin to a certain extent, so that the acid-resistant board can maintain good performance in the face of various complex corrosion environments. In general, the corrosion resistance of chemical corrosion-resistant boards is determined by a variety of factors such as their molecular structure, the stability of chemical bonds, and the microstructure of the material. These factors work together to provide strong protection for chemical corrosion-resistant boards, enabling them to play an important role in various harsh chemical environments. ​
(II) Other excellent characteristics​
Heat resistance: Different types of chemical corrosion-resistant boards have their own advantages in temperature resistance. PTFE sheet is the best in temperature resistance. It can maintain stable performance in a wide temperature range. The temperature range it can withstand is from a very low - 80℃ to a high temperature of 260℃. Whether in the cold polar environment or near the high temperature industrial furnace, PTFE sheet can stand its position without deformation, softening or embrittlement.It not only ensures safe transportation of chemical materials, but also avoids damage to pipelines due to high temperature and corrosion. ​
The temperature resistance of high-density polyethylene sheets is relatively moderate, and its long-term use temperature is generally between - 40℃ and 80℃. Although its temperature resistance range is narrower than that of polytetrafluoroethylene sheets, it can already meet the needs in many industrial application scenarios at room temperature or medium and low temperatures. In ordinary chemical storage tanks, which are used to store chemical raw materials at room temperature, storage tanks made of high-density polyethylene sheets can withstand changes in ambient temperature and effectively resist corrosion from chemical substances to ensure the safe use of storage tanks. ​
The temperature resistance of polypropylene PP sheets is similar to that of high-density polyethylene sheets, and the long-term use temperature is usually around - 30℃ to 100℃. However, after special modification treatment, its temperature resistance can be further improved. In some chemical reaction equipment that needs to be carried out at slightly higher temperatures, components made of modified polypropylene PP sheets can meet the requirements of chemical corrosion resistance while withstanding a certain high temperature environment to ensure the normal operation of the reaction equipment.​
The temperature resistance of acid-resistant board should not be ignored. Generally speaking, it can resist the corrosion of acid, alkali, salt and water vapor within a certain temperature range. The temperature that common acid-resistant board can withstand is between -20℃ and 120℃, which makes it in many building roof applications in metallurgy, chemical industry and other industries. Even in high-temperature production environments, it can maintain good corrosion resistance and provide reliable protection for buildings. ​
Wear resistance: In industrial production, many equipment and components not only have to withstand the corrosion of chemical substances, but also face various friction and wear tests. Chemical corrosion-resistant board also shows excellent performance in this regard. High-density polyethylene board has good wear resistance. The characteristics of its molecular structure enable it to slide relative to the molecular chain when it is rubbed, reducing surface wear. In some material conveying equipment, such as conveyor belts, chutes, etc., using high-density polyethylene board as lining or lining can effectively reduce the wear of materials on equipment and extend the service life of equipment. At the same time, the low friction coefficient of high-density polyethylene board also makes the material smoother during transportation and reduces energy loss.​

Polypropylene PP board also has a certain wear resistance, and it can also play an important role in some occasions that require frequent contact and friction. The agitator blades in chemical production are made of PP board, which can not only resist the corrosion of chemical substances, but also withstand the friction with the materials during the long-term mixing process, maintain the shape and performance of the blades stable, and ensure the uniformity and stability of the mixing effect. ​
Electrical insulation: Electrical insulation performance is crucial in the fields of electronics and electrical engineering. Polytetrafluoroethylene board is famous for its excellent electrical insulation performance. It has extremely high electrical insulation strength and can effectively prevent the passage of current. Polytetrafluoroethylene board is widely used in the insulation support and protection of electronic components. For example, in printed circuit boards, polytetrafluoroethylene board as a substrate material can ensure electrical isolation between electronic components, prevent leakage and short circuit problems, and ensure the normal operation of circuit boards. ​
Both high-density polyethylene board and polypropylene PP board have good electrical insulation performance. They are widely used in the housing, insulating gaskets and other parts of some electrical equipment. These components need to have good electrical insulation to protect the safety of operators and ensure the normal operation of equipment. In ordinary household electrical equipment, you can often see insulating parts made of high-density polyethylene sheets or polypropylene PP sheets, which silently provide protection for the safe and stable operation of electrical equipment. These excellent characteristics of chemical corrosion-resistant sheets enable them to play unique advantages in different fields and become an indispensable important material for many industries. ​
IV. Transformation from raw materials to finished products​
(I) Wisdom of material selection​
The excellent performance of chemical corrosion-resistant sheets is inseparable from the carefully selected raw materials. The material selection process is like a game of wisdom, which requires comprehensive consideration of many factors. ​
For polytetrafluoroethylene sheets, tetrafluoroethylene monomer is its core raw material. Tetrafluoroethylene has extremely high chemical stability, which makes polytetrafluoroethylene sheets have a strong ability to resist chemical erosion at the molecular level. When selecting tetrafluoroethylene monomers, purity is one of the key factors. High-purity tetrafluoroethylene monomers can ensure the smooth progress of the polymerization reaction, thereby generating high-quality polytetrafluoroethylene resins. The presence of impurities may affect the regularity and stability of the molecular chain, reducing the chemical corrosion resistance and other properties of polytetrafluoroethylene sheets.​
When producing high-density polyethylene sheets, the quality of ethylene monomer is crucial. The degree of polymerization and molecular weight distribution of ethylene directly affect the performance of high-density polyethylene. Polyethylene with a higher degree of polymerization has a longer molecular chain and stronger intermolecular forces, which makes the high-density polyethylene sheets have higher strength and better chemical corrosion resistance. At the same time, polyethylene with a narrower molecular weight distribution has more uniform and stable performance and can maintain consistent resistance when facing chemical corrosion. In order to further improve the performance of high-density polyethylene sheets, some additives such as antioxidants and UV stabilizers are also added. Antioxidants can prevent polyethylene from aging due to oxidation during use and extend its service life; UV stabilizers can effectively resist ultraviolet radiation and prevent polyethylene sheets from degradation and performance deterioration in outdoor environments. ​
The raw material of polypropylene PP sheets is mainly propylene monomer. During the polymerization of propylene, the choice of catalyst has a profound impact on the structure and properties of polypropylene. Different types of catalysts can regulate parameters such as isotacticity and crystallinity of polypropylene. Polypropylene PP sheets with high crystallinity have better chemical corrosion resistance and mechanical properties because the molecular arrangement in the crystalline area is more tightly ordered, and it is difficult for chemicals to penetrate and destroy the molecular chain. At the same time, according to the specific application requirements, some additives such as toughening agents and flame retardants will be added. Toughening agents can improve the toughness of PP boards, making them less likely to break when impacted by external forces; flame retardants can give PP boards flame retardant properties and improve their safety in dangerous environments such as fires. ​
The selection of acid-resistant boards is more complicated, and they usually use special resins and reinforcing materials. Special resins such as unsaturated polyester resins and vinyl ester resins have good corrosion resistance to acids, alkalis, salts and water vapor. The molecular structure of these resins contains special functional groups that can react chemically with chemicals to form a protective film to prevent further corrosion. Reinforcing materials such as glass fiber and carbon fiber play a role in enhancing the strength and rigidity of the board. Glass fiber has the characteristics of high strength and low cost, which can significantly improve the mechanical properties of acid-resistant boards; carbon fiber has higher strength and modulus, and is suitable for occasions with extremely high performance requirements. When selecting reinforcing materials, it is also necessary to consider their compatibility with the resin. Good compatibility can ensure that the reinforcing material forms a strong bond with the resin and give full play to the reinforcing effect.​
(II) The secret of manufacturing process​
Hot pressing forming process: Hot pressing forming is an important process for manufacturing chemical corrosion-resistant boards, and its process is full of scientific and technological mysteries. First, the pre-treated raw materials, such as a mixture of fiber and adhesive (for some composite chemical corrosion-resistant boards), are evenly laid in the mold to form a slab. This step requires uniform laying to ensure the consistency of the performance of each part of the board. For example, when manufacturing chemical corrosion-resistant boards with wood fiber and phenolic resin as raw materials, the uniformity of fiber distribution directly affects the strength and corrosion resistance of the board. ​
Then, the mold with the slab is placed in a hot press. The hot press heats the mold through a heating system and applies a certain amount of pressure at the same time. There are many heating methods, and the most common ones are steam heating, electric heating and high-frequency heating. Steam heating has the advantages of uniform heating and low cost, and is suitable for large-scale production; electric heating has precise temperature control and can meet processes with high temperature requirements; high-frequency heating uses high-frequency electromagnetic fields to generate heat inside the slab, with fast heating speed and high efficiency. There are two ways to apply pressure: continuous pressurization and segmented pressurization. Continuous pressurization is suitable for the manufacture of some boards with relatively stable pressure requirements; segmented pressurization can apply different pressures at different stages according to the forming conditions of the board, which helps to improve the quality and performance of the board. ​
During the hot pressing process, temperature, pressure and time are three key parameters that need to be precisely controlled. If the temperature is too high, it may cause excessive stress inside the board and burn on the surface, affecting the appearance and performance of the board; if the temperature is too low, the adhesive will not be fully cured and the board strength will be insufficient. If the pressure is too high, the board will be too dense, affecting its hygroscopicity and processing performance; if the pressure is too low, the internal voids of the board will be too large and the strength cannot meet the requirements. If the time is too long, the board will be over-pyrolyzed and the strength will be reduced; if the time is too short, the adhesive will not be fully cured. Taking the manufacture of 10 mm thick polytetrafluoroethylene composite chemical corrosion-resistant plate as an example, the hot pressing temperature is usually controlled between 370℃ - 380℃, the pressure is 10 - 15MPa, and the hot pressing time is about 30 - 40 minutes, so as to ensure that the plate has good chemical corrosion resistance, mechanical strength and dimensional stability. ​
Extrusion molding process: Extrusion molding process is another method widely used in the manufacture of chemical corrosion-resistant plates. It has the characteristics of high efficiency and continuous production. First, the plastic raw materials (such as polyethylene, polypropylene, etc.) are added to the hopper of the extruder. The raw materials enter the screw area in the hopper by gravity. Driven by the rotation of the screw, the raw materials move forward and produce friction with the screw surface and the inner wall of the barrel. At the same time, they are heated by the heating system and gradually melt into a viscous material. The heating system usually uses resistance heating or electric induction heating to make the temperature in the barrel reach above the melting point of the plastic raw material to ensure that the raw material is fully melted. ​
As the screw continues to rotate, the viscous material is pushed into a die with a specific shape. The shape of the die determines the cross-sectional shape of the extruded sheet, such as rectangle, circle, special shape, etc. In the process of passing through the die, the material is subjected to strong pressure and forced to extrude according to the shape of the die to form a continuous profile. For example, when producing high-density polyethylene chemical corrosion-resistant sheets, the size and shape design of the die must be accurately calculated and processed according to the specifications of the sheet to ensure that the extruded sheet has uniform thickness and accurate size. ​
The extruded profile needs to be cooled and shaped to keep its established shape and size. Common cooling methods include water cooling and air cooling. Water cooling has a fast cooling speed and can quickly reduce the temperature of the profile and make it solidify quickly, but it may cause water stains or deformation on the surface of the sheet; air cooling is relatively mild, and the surface quality of the cooled sheet is better, but the cooling speed is slow and the production efficiency is relatively low. In actual production, the appropriate cooling method is usually selected according to factors such as the material, thickness and production requirements of the sheet. ​
Finally, the cooled and shaped sheet is pulled out through the traction device and cut by the cutting machine according to the required length to finally obtain the finished chemical corrosion-resistant sheet. During the entire extrusion process, parameters such as screw speed, heating temperature, die pressure and cooling speed need to be precisely controlled to ensure the stable quality and excellent performance of the sheet. For example, too fast screw speed may cause uneven mixing of materials, affecting the performance of the sheet; unstable heating temperature may cause insufficient melting of materials or overheating and decomposition, reducing the quality of the sheet. ​
V. Full scan of application fields​
(I) Chemical industry: an indispensable cornerstone​
In the chemical industry, chemical corrosion-resistant plates play an indispensable cornerstone role, and their application runs through all aspects of production. From chemical reactors to pipeline systems, from storage containers to separation equipment, chemical corrosion-resistant plates are everywhere, providing a solid guarantee for the safe and efficient operation of chemical production. ​
Chemical reactors are one of the core equipment in chemical production, and many chemical reactions are carried out in them. These reactions are often accompanied by high temperature, high pressure and the participation of highly corrosive chemicals, which places extremely high requirements on the material of the reactor. Polytetrafluoroethylene plates have become an ideal material for reactor linings due to their excellent chemical corrosion resistance and high temperature resistance. It can effectively prevent the inner wall of the reactor from being corroded by chemicals, extend the service life of the reactor, and ensure the smooth progress of the chemical reaction. In some fine chemical production, such as pharmaceuticals, pesticides and other fields, the purity and stability of the reaction process are extremely high. The reactor lined with polytetrafluoroethylene sheets can avoid the introduction of impurities and ensure the quality of the product. ​
The pipeline system is the "lifeline" of material transportation in chemical production and needs to withstand the flow erosion and corrosion of various chemicals. Pipes made of high-density polyethylene sheets and polypropylene PP sheets are widely used in the transportation of chemical materials due to their good chemical corrosion resistance, wear resistance and flexibility. They can safely and stably transport various acids, alkalis, salt solutions and organic chemicals under different temperature and pressure conditions. In some large chemical parks, the pipeline network is intricate. The application of high-density polyethylene sheets and polypropylene PP sheet pipelines has greatly reduced the cost of pipeline maintenance and replacement, and improved the continuity and reliability of production. ​
Storage containers are key facilities for the storage of chemical raw materials and products. Storage tanks and storage tanks made of chemical corrosion-resistant sheets can safely store various corrosive chemicals. For some flammable and explosive chemicals, chemical corrosion-resistant boards with flame retardant properties, such as polypropylene PP boards with flame retardants added, can also be selected to improve storage safety. In chemical companies, a large amount of chemical raw materials such as sulfuric acid, hydrochloric acid, and sodium hydroxide need to be stored. Storage containers made of chemical corrosion-resistant boards can ensure that these raw materials do not leak or deteriorate during storage, ensuring the normal production and operation of the company. ​
(II) Electronics and electrical: The guardian of precision equipment ​
In the field of electronics and electrical, chemical corrosion-resistant boards are like the guardian of precision equipment, providing key protection for electronic components and circuit boards, ensuring the stable operation of electronic equipment in complex environments. ​
During the production, assembly and use of electronic components, they may be exposed to various chemicals, such as flux, cleaning agents, corrosive gases, etc. If these chemicals corrode electronic components, they may cause their performance to deteriorate, short circuit or even damage. With its excellent electrical insulation properties and chemical corrosion resistance, polytetrafluoroethylene sheets have become an ideal material for insulation support and protection of electronic components. In some high-end electronic equipment, such as aerospace electronic equipment, high-end servers, etc., polytetrafluoroethylene sheets are used to manufacture packaging shells, insulating gaskets, etc. of electronic components, effectively protecting electronic components from corrosion by chemical substances, while ensuring the stable transmission of electronic signals. ​
The circuit board is one of the core components of electronic equipment, on which a large number of electronic components and circuits are integrated. In the manufacturing process of the circuit board, various chemical reagents are required for etching, cleaning and other processes, which requires the circuit board material to have good chemical corrosion resistance. At the same time, during the use of electronic equipment, the circuit board may also be affected by environmental factors such as moisture, dust, and corrosive gases. Fiberglass board (full name fiberglass composite board, English name Fiber Glass Board, referred to as FR-4) is a commonly used circuit board substrate. It is a mixture of glass fiber material and highly heat-resistant epoxy resin or other composite materials, and is heated and pressurized by other processes.Made of. Fiberglass board not only has good mechanical properties and electrical insulation properties, but also has a certain degree of chemical corrosion resistance. It can effectively resist the erosion of chemical substances during the manufacturing and use of circuit boards, ensuring the stable performance of circuit boards.
(III) Medical industry: invisible assistant for health protection
In the medical industry, chemical corrosion-resistant boards are like invisible assistants for health protection, silently playing an important role behind the scenes, providing reliable support for surgical instruments, medical equipment housings, and drug storage containers. ​
Surgical instruments need to have a high degree of cleanliness and corrosion resistance to ensure that they will not cause infection or harm to patients during surgery. Many surgical instruments are made of metal materials such as stainless steel, but in some special surgical environments, such as operations involving corrosive drugs or body fluids, metal instruments may be corroded, affecting their service life and performance. At this time, surgical instrument accessories made of chemical corrosion-resistant boards, such as handles, sleeves, etc., play an important role. These accessories can not only resist the corrosion of chemicals, but also have good biocompatibility and will not have adverse reactions to human tissues. For example, surgical instrument sleeves made of polytetrafluoroethylene sheets can effectively prevent corrosive drugs from corroding metal instruments during surgery, while ensuring flexible operation of the instruments. ​
The housing of medical equipment needs to protect the internal precision electronic components and mechanical parts from the influence of the external environment, including the corrosion of chemicals. With the continuous development of medical technology, medical equipment needs to be cleaned and disinfected frequently to prevent the spread of bacteria and viruses. This requires that the housing material of medical equipment has good chemical corrosion resistance and can withstand wiping and soaking with various disinfectants. Some new chemical corrosion-resistant plastics, such as SABIC's LNP™ ELCRES™ CRX polycarbonate (PC) copolymer, provide a stronger chemical resistance solution for medical equipment housing. Compared with traditional PC/ABS, PC/PBT, copolyester resins and copolymers, this material can better resist the corrosion of corrosive cleaning agents and avoid problems such as damage and cracking of the housing, thereby extending the service life of medical equipment and ensuring the smooth progress of medical treatment. ​
Drug storage containers are an important part of ensuring the quality and safety of drugs. During storage, drugs may interact with container materials, causing the drugs to deteriorate or fail. Therefore, drug storage containers need to be made of materials that are resistant to chemical corrosion and do not react with drugs. High-density polyethylene boards and polypropylene PP boards are widely used in the manufacture of drug storage containers due to their good chemical stability and non-toxic and odorless characteristics. Medicine bottles, medicine boxes, etc. made of these materials can effectively protect drugs from the influence of external chemicals and ensure the quality and efficacy of drugs within the validity period. ​
(IV) Construction field: Building solid protective buildings ​
In the construction field, chemical corrosion-resistant boards play an important role in building solid protective buildings, especially in buildings with chemical corrosion risks. It provides reliable protection for walls, floors, roofs, etc. ​
In some chemical companies, laboratories, sewage treatment plants and other places, the walls of buildings need to withstand the erosion of chemicals. As a wall decoration material, chemical corrosion-resistant boards can not only resist the corrosion of chemicals such as acids, alkalis, and salts, but also have good fire resistance, moisture resistance, sound insulation and other properties. For example, Chemical Resistant Board (also known as Trespa, thermosetting laminate) is a high-performance industrial decorative material. It is made of multiple layers of kraft paper soaked in phenolic resin and heat-cured at a specific pressure and temperature. Chemical Resistant Board is durable, chemically resistant, wear-resistant, heat-resistant, flame-retardant and easy to clean and maintain. It is widely used in wall decoration in laboratories, chemical workshops and other places. It can effectively protect the wall structure from damage by chemicals, while providing a safe and tidy working space for the indoor environment. ​
The floor is one of the parts of a building that is most susceptible to wear and chemical corrosion. In buildings with chemical corrosion risks, such as electroplating plants and battery production workshops, the floor needs to withstand long-term erosion by chemicals such as strong acids and alkalis. Floor panels made of high-density polyethylene boards and polypropylene PP boards have good chemical corrosion resistance and wear resistance, and can effectively resist the erosion of chemicals and daily wear. These panels also have the characteristics of anti-slip and easy cleaning, which improves the safety and hygiene of the floor.
The roof is an important barrier for buildings to resist the external environment. In buildings with the risk of chemical corrosion, the corrosion resistance of the roof is particularly important. Acid-resistant boards, as a building material specially designed to resist corrosion from acids, alkalis, salts and water vapor, are widely used in building roofs in the metallurgical and chemical industries. Acid-resistant boards are usually made of special resins and reinforcing materials, and have good corrosion resistance, weather resistance and mechanical properties. It can maintain the waterproof and anti-seepage properties of the roof for a long time in harsh chemical environments, and protect the interior of the building from erosion by external chemicals and rainwater. At the same time, acid-resistant boards also have good lighting properties, which can provide sufficient natural light for the interior and reduce the cost of artificial lighting.