Teflon Teflon product name "Teflon" (Teflon,Flu on), Jane PTEE or F4, commonly known as plastic king, is one of the most corrosion resistant materials of alum in the world today, and is the ideal sealing material for the connection of liquid gas pipelines, heat exchangers and other content equipment. Tetrafluoroethylene [PTFE,F4] is one of the best corrosion resistance materials in the world today, so it has the reputation of "plastic king". It can be used in any kind of chemical medium for a long time, and its production has solved many problems in China's chemical industry, petroleum, pharmaceutical and other fields. Ptfe seals, gaskets, gaskets. Polytetrafluoroethylene seals, gaskets, sealing gaskets are made of suspended polymer polytetrafluoroethylene resin molding. Compared with other plastics, polytetrafluoroethylene has excellent chemical corrosion resistance and temperature resistance, and it has been widely used as sealing materials and filling materials. It is made of tetrafluoroethylene polymerized polymer compounds, with excellent chemical stability, corrosion resistance, sealing, high lubrication non-viscosity, electrical insulation and good aging resistance. It can work for a long time at the temperature of +250℃ to -180℃, in addition to molten gold sodium and liquid fluorine, it can withstand all other chemicals, and it does not change when boiling in aqua aureus. At present, all kinds of PTFE products have played a pivotal role in the national economy such as chemical industry, machinery, electronics, electrical appliances, military industry, aerospace, environmental protection and Bridges.
Carbon fiber is a fibrous carbon material with a carbon content of more than 90%, and the C/C composite material composed of resin is one of the most corrosion-resistant materials. carbon fiber (CF) is a new type of fiber material with high strength and high modulus fiber with carbon content of more than 95%. It is made of organic fibers such as flake graphite microcrystals stacked along the axial direction of fibers, and obtained by carbonization and graphitization. Carbon fiber is "soft outside and rigid inside", lighter than aluminum, but its strength is higher than steel, and it has corrosion resistance and high modulus characteristics, which are important materials in national defense and civil industry. It not only has the inherent intrinsic properties of carbon materials, but also has the soft processability of textile fibers, and is a new generation of reinforced fibers. Carbon fiber has many excellent properties, such as high axial strength and modulus, low density, high specific performance, no creep, ultra-high temperature resistance in non-oxidation environment, good fatigue resistance, specific heat and electrical conductivity between non-metal and metal, small coefficient of thermal expansion and anisotropy, good corrosion resistance, and good X-ray transmission. Good electrical and thermal conductivity, good electromagnetic shielding, etc. Compared with traditional glass fiber, the Young's modulus of carbon fiber is more than 3 times. Compared with Kevlar fiber, Young's modulus is about 2 times, insoluble in organic solvents, acids and alkalis, and corrosion resistance is outstanding.
Copper oxide is the most corrosion-resistant material at present. Technicians in Sweden, which has long been a world leader in nuclear waste disposal, are using a new copper oxide container to store nuclear waste, which can be safely stored for 100,000 years. Copper oxide (CuO) is a black oxide of copper that is slightly amphoteric and slightly hygroscopic. The relative molecular weight is 79.545, the density is 6.3~6.9 g/cm3, and the melting point is 1326℃. Insoluble in water and ethanol, soluble in acid, ammonium chloride and potassium cyanide solution, slowly dissolved in ammonia solution, and can react with strong bases. Copper oxide is mainly used in making rayon, ceramics, glaze and enamel, battery, petroleum desulfurizer, insecticide, and also for hydrogen production, catalyst, green glass and so on.
Platinum is chemically stable, does not interact with hydrochloric acid, nitric acid, sulfuric acid and organic acid at room temperature, has the "most corrosion resistant metal" this name, but soluble in aqua regia. Titanium Because it is easy to form a stable titanium oxide (TiO2) protective film, titanium cooling tubes are considered to be resistant to corrosion and erosion. Platinum (Pt) is a naturally occurring white precious metal. Platinum has shone brightly in the history of human civilization as early as 700 BC, and in the more than 2,000 years of human use of platinum, it has been considered one of the most noble metals.The nature of platinum is very stable, it will not deteriorate or fade due to daily wear, and its luster is always the same. Even contact with common acidic substances in life, such as sulfur in hot springs, bleach, chlorine in swimming pools, or sweat, will not be affected, so you can wear platinum jewelry at any time with great confidence. No matter how long it is worn, platinum can always maintain its natural pure white luster and never fade. (Source: China corrosion and protection network) Stainless steel is also specific corrosion resistance function, Dongtai Warwick production of stainless steel screws used in communication electronics, electricity, ships and yachts, building decoration, construction industry, railway traffic and so on
