The water vapor permeabilities of modified membranes made from water dispersive polyurethane were superior to those of modified hydrophobic polyurethane membranes.
由水分散型聚氨酯制备的改性膜的透气性高于疏水性聚氨酯膜；
The results showed that modified polyurethane materials had excellent mechanic properties, heat resistance and surface hydrophobic properties.
结果表明，改性后的聚氨酯弹性体具有更优良的力学性能、耐热性及表面疏水性。
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