Polyimides (PI) are aromatic heterocyclic polymers with imide groups in their molecular structure. They can be divided into four groups: benzene like pi, soluble PI, polyamide imide (PAI) and polyetherimide (PEI). Polyimide is a kind of material with high thermal stability, Some varieties can withstand 290 ℃ for a long time and 490 ℃ for a short time. In addition, it has good mechanical properties, fatigue resistance, flame retardancy, dimensional stability, electrical properties, small molding shrinkage, oil resistance, general acid and organic solvent resistance, alkali resistance, and excellent friction and wear resistanceApplication:
Polytetrafluoroethylene(PTFE)- is one of the best corrosion resistant materials in the world, so it is called "Plastic King ". It can be used in any kind of chemical medium for a long time. teflon is a polymer compound made of teflon by polymerization. it has excellent chemical stability, corrosion resistance, tightness, high lubrication and non-viscosity, electrical insulation and good aging resistance. Long-term operation at temperatures ℃250-180, with the exception of molten sodium and liquid fluorine, can withstand all other chemicals, boiling in water does not change. Used as engineering plastics, it can be made into PTFE tubes, rods, strips, plates, films, etc. Generally used in high performance requirements of corrosion-resistant pipes, containers, pumps, valves and the production of radar, high-frequency communication equipment, radio equipment. Dispersion solution can be used as insulation impregnation solution of various materials and anticorrosive coating of metal, glass, pottery surface, etc. All kinds of PTFE ring, PTFE gasket and PTFE disk root are widely used in all kinds of anticorrosive pipe flange sealing. Besides, it can also be used for wire drawing, polytetrafluoroethylene fiber —— fluorine, Teflon.
PTFE tubes are made from special blow-up molding. It is made by heating the PTFE bar in a certain mold to a certain temperature and giving a certain internal pressure in the pipe, so that the bar is expanded laterally (blown up) and then cooled and finalized. The PTFE tube has the inherent properties of PTFE and has high flexibility and elasticity. There are three types according to the shape of PTFE tube: V type, U type and Ω type. As the connection of corrosion-resistant pipe, it absorbs the change of pipe length caused by thermal expansion and contraction, and has the dislocation connection function of connecting rigid large brittle pipe. In order to improve the performance, the PTFE tube can also be enhanced by metal ring, metal sleeve, rubber and so on.
We offer PTFE products - tube, sheet, bar, gasket, film, disk root, filled teflon, expanded teflon products (gasket), microporous teflon products.
Polyphenylene sulfide (PPS) exhibits excellent comprehensive properties in chemical and high temperature environments, including wear resistance, high load capacity, dimensional stability and chemical corrosion resistance. PPS profile can be reflow welded by SMT (220 ℃ for long term and 270 ℃ for short term). PPS is suitable for applications where PA, POM, pet, Pei and PSU are defective, while PI, peek and Pai are too expensive and must be replaced by more economical materials. At present, our products are used in boiler sensors, chemical equipment, mechanical bearings and electrical insulation systems. At the same time, it has successfully replaced peek and PI in many fields, greatly saving costs and improving competitive value for customers.
PPS has excellent heat resistance, flame retardancy, good mechanical properties, strong rigidity, high surface hardness, and excellent chemical resistance. At present, no solvent that can melt PPS below 200 ℃ has been found, which has good dimensional stability, low molding shrinkage and good dimensional stability under high humidity conditions. Therefore, it is widely used in machinery, chemical industry, instrument, aviation, aerospace, ship and other aspects. Excellent electrical performance.
We supply various specifications of bar (color/black), multi-specification plate (color/black) gear, bearing, guide ring, high temperature resistant gasket, blade, worm gear, rack, rotor, rubber clip, support, shaft sleeve, piston ring, support ring, seal ring, valve piece, wear-resistant ring