The role of polyoxyethylene triol, rosin polyester polyol and asphalt in asphalt - polyurethane rigid foam was stressed.
重点介绍了聚氧乙烯三醇 、 松香芳烃聚酯多元醇在配方中的作用.
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The room temperature curing polyurethane - polystyrene blends were synthesized a synthesized unsaturated polyester - polyol by chemical blending method.
合成了不饱和聚酯多元醇,进而采用化学共混法合成了室温固化的聚氨酯聚苯乙烯共混物.
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