PPS has good chemical resistance, excellent creep resistance, low water absorption, good dimensional stability, high modulus of elasticity, and flame retardancy. PPS also has good mechanical strength, and its rigidity is also impossible for general engineering plastics. Comparable. Due to its excellent high temperature resistance and high fluidity, it facilitates the modification of its materials. Therefore, in order to compensate for the natural defects of materials, we usually achieve a balance of material properties through modification.