TPU Classification And Characteristics

classification
There are two types of polyurethane thermoplastic elastomers: polyester type and polyether type, with white irregular spherical or columnar particles with a density of 1.10-1.25g/cm3. The relative density of polyether type is smaller than that of polyester type. The glass transition temperature of polyether type is 100.6~106.1 ℃, and that of polyester type is 108.9~122.8 ℃. The brittleness temperature of polyether type and polyester type is lower than -62 ℃, and the low-temperature resistance of polyether type is better than that of polyester type.
characteristic
The outstanding characteristics of polyurethane thermoplastic elastomers are excellent wear resistance, excellent ozone resistance, high hardness, high strength, good elasticity, low temperature resistance, good oil resistance, chemical resistance, and environmental resistance. In humid environments, the hydrolysis stability of polyether type esters far exceeds that of polyester type.