遇水膨胀聚氨酯弹性体的制备与膨胀性能研究  

Preparation and water expansion properties of water swellable PU elastomer

作　　者：刘晓丹[1] 董慧民[1] 李敏婷[1] 李再峰[1] 

机构地区：[1]青岛科技大学生态化工教育部重点实验室,山东青岛266042

出　　处：《弹性体》2010年第4期9-12,共4页China Elastomerics

基　　金：山东省自然科学基金(Y2008B08);山东省中青年科学家奖励基金(2007BS04001);山东省科技攻关计划基金(2008GG10003008)

摘　　要：以聚乙二醇、聚四氢呋喃二醇、甲苯二异氰酸酯为原料,用预聚体法制备出遇水膨胀聚氨酯弹性体,研究了聚乙二醇用量和种类对聚氨酯的力学性能及其在不同矿化度水中的吸水膨胀性能的影响。实验结果表明:增加聚乙二醇用量有利于提高聚氨酯的吸水膨胀倍率,但易降低弹性体的力学性能;矿化度对聚乙二醇型聚氨酯的吸水膨胀倍率影响较吸水树脂复合型遇水膨胀橡胶要小得多。Water swellable PU elastomer were synthesized by prepolymer method with polyethylene glycol,polyoxytertramethylene glycol and toluene diisocyanate as raw materials.Approached the influence of the content of polyethylene glycol on mechanical properties and water absorption expansion properties of PU.The results indicated that water absorption expansion rate increases,but that the mechanical properties decrease with increases in the amount of the polyethylene glycol.There is a little effct of salinity on wate...

关 键 词：聚氨酯 吸水膨胀倍率 矿化度 

分 类 号：TQ334[化学工程—橡胶工业]