Shanghai Daoqin Plastics Co., Ltd.

polyphenylene sulfide (PPS) （PPS）, full is poly 苯基硫 ether. it is types comprehensive property can excellent thermoplastic property specialty engineering plastics, its features is high temperature resistance, corrosion resistant and excellent mechanical properties. PPS is aromatic polymer, type PPS in 350℃ above crosslinked rear formed hot solid property plastics, type structure PPS is thermoplastic property plastics. （一） PPS property can （1） PPS is property crystallization property resin, its crystallization degree is 65%, appearance is white or color. pure PPS density is 1.3~1.35g/cm3,但 very less mono use, application PPS more is modified product grade,如 glass fiber reinforcement, machine filling and carbon fiber reinforced degree, modified rear density increase large is 1.60~1.68 g/cm3.（2） PPS tool has high strength, high rigidity and dimensional stability, in high wet conditions lower rigid property good, tool has fatigue resistance can and resistant creep property can: water property, property, molding shrinkage property and 线膨胀系数均 very small. （3） PPS structure in has 硫原子, its oxygen index (LOI) is 46%~53%, in upper can 燃烧, 但不滴落, 且离火 self-extinguishing, has excellent retardant property can. （4） PPS resistant thermal properties excellent 秀, melting point 275~291 ℃, heat deflection temperature (HDT) is 135℃, glass fiber reinforcement rear can to 260℃, separation understanding temperature degree is 400℃（5） PPS tool has good high electrical retardant rate and low dielectric constant, its electrical insulation property temperature degree relatively small, make in high temperature, high wet lower still maintain good electrical insulation property can. （6） PPS tool has excellent chemical resistant stability property, remove strong/high oxidation property acid, concentrated acid, acid and “王 water ” outer, can resistant other acid, alkali, salt 腐蚀, in 200℃ below/following solvent 于任何 has machine solvent agent, its corrosion resistant property can and PTFE versus 当. （7） PPS is inert property material 质, 口服无毒, in processing 时, temperature degree ultra- 370℃, PPS会发生 a small amount of hot separation understanding, generate micro amount SO, COS, CO, CS and other has gas 体.