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| PTFE products | Product All Clicks£º6265 Number |
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PTFE products Tetrafluoroethylene products is made of PTFE resin and mold for cold pressed and sintered, with excellent corrosion resistance, good self lubrication and adhesion. Therefore, the products are almost all chemical resistant, and have the characteristics of wear resistance, pressure resistance, low friction coefficient and so on. It is widely used in many fields such as petroleum, chemical industry, metallurgy, transportation, medicine, food, electric power and so on. A summary of the PTFE products molding method 1 molding method of PTFE mechanics2. Push pressure. Skins method 4. Spraying 5. Weaving method. Winding method. The rolling method. Extrusion method. Bonding method. Welding method 11. Thermal shaping method of 12. Machining method PTFE sintering process Molding shrinkage rate: 3.1-5.0% molding temperature: 330-380 degree of sintering conditions: the best temperature not more than 385 degrees, or molecules will necrosis, affecting the quality of. Material properties Long term use of temperature -200--260 degrees, has excellent chemical resistance, all chemicals are corrosion resistance, friction coefficient in plastic, the lowest, there is a good electrical properties, the electrical insulation is not affected by temperature, there is a "plastic king". 2 in a transparent or semi transparent state, the higher the degree of crystallinity, the worse the transparency. The raw material is a powder resin or concentrated dispersion, with a high molecular weight, for the high crystallinity of thermoplastic polymer. 1 is suitable for the production of corrosion resistant parts, wear resistant parts, seals, insulation and medical equipment parts 3 K 4 Forming performance 1 crystalline material, moisture absorption is small. 2 poor mobility, extremely easy to decompose, the decomposition of corrosive gas. Should strictly control the molding temperature, the mould should be heated, the pouring system of the material flow resistance of PTFE pipe Should be small. 3 powder resin is often used in powder metallurgy process, using sintering method. Sintering temperature 360-375 degrees, not more than 410 degrees. Latex resin is usually used in cold extrusion process, which can be formed on the surface of the article. For product transparency, toughness is good, should take the rapid cooling. Can also take the extrusion molding, can be extrusion pipe, rod, profile. 4.PTFE melt viscosity is very high, the content of the bulk viscosity decreases with the increase of shear stress, which shows the characteristics of non Newtonian fluid. Two 5 times, you can hot pressing composite, welding, bonding, enhancement, mechanical processing, in order to produce the final product. 6. It is best to use sintering curve first step in 120 degrees of drying the second step such as filling graphite or second ink in 250 degrees to temperature treatment. Third 345 steps in 4 degrees fourth 5 step in 375 degrees for fifth steps to cool down not too fast PTFE application PTFE can be used in compression or extrusion processing, can also be made of water dispersion, for coating, dipping or made of fiber. Polytetrafluoroethylene (PTFE) in atomic energy, defense, aerospace, electronics, electrical, chemical, machinery, equipment, instrumentation, construction, textile, metal surface treatment, pharmaceutical, medical, textile, food, metallurgical and other industries are widely used as high and low temperature resistance, corrosion resistant material, insulation material, anti sticking coating to become products can not be replaced. PTFE has excellent comprehensive properties, high temperature, corrosion resistance, non stick, self lubrication, excellent dielectric properties, very low friction coefficient. Used in engineering plastics, can be made of PTFE tubes, rods, belts, plates, films, etc., generally used in high performance requirements of the pipeline, containers, pumps, valves and radar, high frequency communications equipment, wireless electrical materials, etc.. PTFE with any can withstand the filler of PTFE sintering temperature, mechanical properties can be greatly improved, while maintaining the PTFE other excellent performance. Glass fiber, metal, metal oxide, graphite, molybdenum disulfide, carbon Qianxian, polyimide, EKONOL filled a variety of... Etc., wear resistance, extreme PV value can be increased by 1000 times. Teflon cloth PTFE pipe selection of suspension polymerized PTFE resin by plunger extrusion processing. PTFE has the best chemical corrosion resistance and dielectric properties in the known plastics. PTFE braided packing is a good dynamic sealing material is comprised of expanded poly tetrachloroethylene ribbon woven into, with low friction coefficient, resistance to abrasion, chemical corrosion, sealing good, hydrolysis, the same hard and excellent performance. Liner seal and lubrication for all kinds of media, and the use of electrical insulation, capacitor dielectric, wire insulation, electrical insulation, etc.. PTFE film is suitable for capacitor medium, special cable insulation layer, wire insulation, electrical insulation and sealing gasket, but also do not stick with, sealing tape, release. PTFE classification and its filling products General materials All rods, tubes, film plate, belt, rope, packing, gasket and graphite, molybdenum disulfide, three oxidation aluminum, glass fiber, carbon fiber as filler, to improve the mechanical properties of pure PTFE ethylene. Anticorrosion 1. Pipes and fittings: pure PTFE tube; PTFE lined pipe; outer wrapped glass steel pipe; steel composite flange 2 chemical container liner: Teflon lined autoclave; Teflon lined tank; Teflon lined tower; 3. The heat exchanger PTFE 6 bellows 5 valve and pump the main parts of the 4 steel wire reinforced hose 7. The PTFE membrane is a new material, which is a new material, which is a new material. |
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