Low temperature PC performance characteristics, 1, PC has good transparency, light transmission rate of 92%, PC good heat resistance than PMMA transparent material (142 ℃); 2, PC good low temperature performance, in - 110 ℃ ~ 150 ℃ long-term use; 3, PC outstanding impact resistance, creep resistance and dimensional stability; 4, PC over a wide temperature (-100 ~ 140 ℃) and high rate (62 ~ 106Hz) power off good insulation; 5, good workability (injection, extrusion, blowing, salivation, pressure, etc.). Rigid molecular chain to the PC-based, strong intermolecular interaction, molecular chain entanglement is not easy to lift, alignment and orientation of molecules is difficult not after self-recovery, crystallization difficulties, the polymer is non-stationary state, the residual stress is difficult to self-lifting, stress cracking is easy to form, but not brittle plastics. Low temperature PC market applications, PC has good light transmission, impact resistance, resistance to ultraviolet radiation and its products, dimensional stability and good processing performance, making it more than the traditional use of inorganic glass construction technology has obvious performance advantages. Used in automobile manufacturing industries, PC has good impact resistance, heat distortion performance, and good weather resistance, high hardness, therefore suitable for the production of cars and light trucks of various parts, which are mainly concentrated in lighting systems, instrument panels, heating plate, defrosters and polycarbonate alloy of the bumper. For the production of medical equipment, PC products can withstand steam cleaning agent, heating, and high-dose radiation sterilization, without yellowing and physical degradation occurs, which is widely used in artificial kidney dialysis equipment and other needs in a transparent, intuitive condition and the need to operate repeatedly sterilized medical devices.