The selection of blowing agent and the method of modifying fire retardance of rigidpolyurethanefoams were briefly introduced.
简要介绍硬质聚氨酯泡沫塑料的发泡剂选择和改进阻燃性的方法。
2
This thesis introduces the moulding technique, mechanical and thermal properties of the rigidpolyurethanefoams used in cryogenic insulation.
本文介绍低温绝热用硬质聚氨酯泡沫塑料的力学、热学性质及其成型工艺。
3
The aging mechanism of rigidpolyurethanefoams at indoor storage conditions was investigated with indoor storage tests, accelerated hygrothermal aging tests and IR spectra.