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Thermoplastic elastomers generally have good temperature resistance. The temperature for continuous long-term use is 80 ~ 90 ℃, and can reach about 120 ℃ in a short time. The low temperature resistance of polyurethane is also good. The brittleness temperature of polyester polyurethane is - 40 ℃, while that of polyether polyurethane is - 70 ~ - 80 ℃, but it will harden at low temperature.
Thermoplastic polyurethane elastomer will change color and darken under long-term sunlight, and its physical properties will gradually decrease. Moreover, enzyme bacteria can also lead to the degradation of polyurethane. Therefore, additives such as antioxidant, UV absorber and enzyme inhibitor are used in the industrial production of polyurethane rubber to improve its performance.
The good environmental characteristics of thermoplastic elastomer create great advantages for it, so it is widely used in pipe, cable, automobile and other industries.
