Using tri-functionality polyoxytrimethylene alcohol ether and polyethyleneglycol, synthetize polyurethane elastomer with water absorption expansion rate of0~200%.
采用三官能度的聚氧化丙烯醚醇、聚乙二醇，合成了吸水膨胀率在0～200%的聚氨酯弹性体。
2
Acrylate polyethyleneglycol monoester was synthesized by condensation of PEG (200) and acrylic acid without water-carrying reaction.