PPS advantage 01 Mechanical properties PPS resin mechanical strength is not high, but afterreinforced glass fiber, carbon fiber or mineral stuff filling, its strength and stiffness are multiplied, and having excellent resistance to creep and fatigue. Its surface hardness is high, rockwell hardness > 100HR , tensile strength reach 170 mpa, bending strength > 220MPA, notched impact strength > 16MPA, bending modulus > 3.5 x 10^4 02 Heat resistant and flame retardant PPS has excellent heat resistance, the melting point is more than 280 ℃ . When suffering 1.8 MPA load, its thermal deformation temperature is more than 260 ℃ . Common long-term usage temperature is 220-240 ℃, PPS resin has good flame resistance, no need to add any flame retardants then reach UL94 level 0 and 5-V standard, when burning, smoke output is very low 03 Chemical character PPS is excellent chemical resistance, just behind ptfe material, it won't dissolve in any organic solvents below 200 ℃, except strong oxidizing acid, it is also strong resistance to inorganic acid, alkali and salt . especially it is also stable in variety of radiation.