Abstract

The effect of the composition of a polyisocyanate–polyester–foaming agent mixture on the density, the thermal conductivity, the mechanical properties, and the thermostimulated shrinkage of polyurethane foams is studied. Nonshrinking foams with a shape stability and a thermal conductivity of 0.0234–0.0310 W m^–1 K^–1 are prepared. A change in the polyisocyanate/polyester ratio makes it possible to control the thermostimulated foam shrinkage in the range from 0 to 78%.

中文翻译：

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多异氰酸酯-聚酯-发泡剂混合物的组成对聚氨酯泡沫性能的影响

摘要

研究了多异氰酸酯-聚酯-发泡剂混合物的组成对聚氨酯泡沫的密度，热导率，机械性能和热刺激收缩的影响。制备了形状稳定性和导热系数为0.0234–0.0310 W m ^–1 K ^–1的非收缩泡沫。多异氰酸酯/聚酯比率的变化使得可以将热刺激的泡沫收缩控制在0至78％的范围内。