【摘要】 以异佛尔酮二异氰酸酯(IPDI)、甲苯-2,4-二异氰酸酯(TDI)、聚碳酸酯二醇(L5652-2000)和聚四氢呋喃二醇(PTMG-2000)为主要原料,2,2-二羟甲基丙酸(DMPA)为亲水单体,1,4-丁二醇(BDO)和乙二胺(EA)为扩链剂,在不同条件下制备了系列水性聚氨酯分散体。通过对胶膜硬度、吸水率以及附着力等的研究,分析了分子结构及分散条件对分散体稳定性和胶膜性能的影响。更多还原

【Abstract】 The series of waterborne polyurethane dispersion were prepared in different conditions by use of IPDI,TDI,polycarbonate diol(L5652-2000)and polytetrahydrofuran glycol(PTMG-2000)as main materials,dimethylol propionic acid as hydrophilic monomer,and 1,4-butanediol(BDO)and ethanediamine as chain extender.The influences of molecular structure and dispersing condition on the dispersion stability and film performance were analyzed by the study of hardness,water absorption and adhesion of films.更多还原