TPEE has excellent heat resistance, the higher hardness, the better heat resistance: TPEE can be heated at 110 ~ 140 ℃ for 10h without any major weight loss, and only 0.05%, and 0.1 % at 160 ℃ and 180 ℃ respectively. So that TPEE serve temperature is very high, and the temperature can be even higher in short-term use. can be applied at automobile baking temperature (150 ~ 160 ℃), and it has little loss of mechanical properties at high and low temperatures. At 120 ℃ or higher, TPEE has much higher tensile strength than TPU, besides TPEE also has excellent low temperature performance. TPEE brittle point is lower than -70 ℃, and the lower hardness, the better low temperature resistance. Most TPEE can be applied to long-term use at -40 ℃. Because TPEE showing a balance performance at high and low temperatures, it has wide serve temperature range, ranging from -70 to 200 ℃.

TPEE has excellent oil resistance, chemical resistance to most polar liquid(such as acids, bases, amines glycol compound) at room temperature, but it cannot resist halogenated hydrocarbons (except Freon) and phenols. The resistance to chemicals increases with hardness increasing. TPEE has good anti-swelling properties and permeability resistance to most organic solvents, fuel and gas.

TPEE has wide hardness range, may vary between Shore 35D-80D, structural strength is 2-6 folds of vulcanized rubber, and has abrasion resistance, good flexibility, oil resistance and etc. Relative density is about 1.2, good mechanical strength, tensile strength greater than 30MPa, 3-6 times elastic than engineering plastics; flexural strength, and tensile strength, tear strength are 6-12 times 2-6 times 2-10 times higher than natural rubber respectively. At low temperatures, the elastic recovery is good, low temperature impact strength even better than TPU and PA11.