【摘要】 本文以３．３＇－二氯－４，４＇－二氨基二苯甲烷（ＭＯＣＡ）为交联剂，以含阻聚剂的甲基丙烯酸甲酯为第二种单体，制备了端异氰酸酯四氢呋喃一环氧丙烷共聚醚的聚氨酯网络，用溶胀法测定了聚氨酯网络的单位体积内有效交联链的数目（Ｖｅ）及交联点间平均分子量（Ｍｃ），观察到Ｍｃ随稀释单体量的增加而增加，随交联剂用量的增加而减小，同时Ｍｃ对力学性能的影响也进行了测试．更多还原

【Abstract】 The Polyurethane net of terminal isocyanate tetrahydrofuran epoxypropane copolyether wassynthesized. The cross linked agent is 3,3-dichloral-4,4/-diamino dibenzylmethane (MOCA ),The second monomer is methyl methactylate it is determined by swelling method that thenumber of effective cross bond which is in the unit volume of polyurethane. The averagemolecular weight Mc, between cross link points, was determined. Me increased as dilationmonomer increased and Me decreased as MOCA increased, The effect of Me on the Propertywas discussed.更多还原