Abstract:In this paper, wet鄄hot cycling test, salt鄄fog test, accelerated aging test and solar radiation test were
designed to simulate three special environments to test the performance change of HCFC-141b blowing polyurethane
plastic foam. Compressive strength, closed cell proportion, liner expansion coefficient and thermal conductivity were
tested before and after environment tests. The results indicate that after the three special environment tests HCFC-
141b blowing polyurethane plastic foam have higher compressive strength and thermal conductivity, smaller liner ex鄄
pansion coefficient and equivalent closed cell proportion. Solar radiation test on properties of foam effect maximum.
Compressive strength of sample SD-4 increased by 32%, and obturator first increased and then decreased, linear ex鄄
pansion coefficient decreased by 19%, the thermal conductivity increased 30%.
