摘要
以聚丙二醇(PEG)、甲基六氢苯酐(MHHPA)、异佛尔酮二异氰酸酯(IPDI)、二苯基甲烷二异氰酸酯(MDI)以及甲苯二异氰酸酯(TDI)为原料,分别合成出了三种末端含有异氰酸酯的反应性聚氨酯。评价了这三种反应性聚氨酯的物理机械性能,并将这三种聚氨酯分别与低黏度双酚A型环氧树脂按不同的比例混合,考察了三个不同的聚氨酯/环氧树脂固化体系的力学性能。研究表明,当反应性聚氨酯预聚体与环氧树脂的质量比为95∶5,固化条件为室温下7d或者室温下12h后,再在80℃放置4h时,这三种共混体系均能达到理想的黏结效果。
Three kind of reactive polyurethane prepolymer terminated with isocyanate group were synthesized by using PEG,MHHPA,IPDI,MDI,and TDI as raw materials. The adhesiveness and the adhesion strength of the three kind of polyurethane and their blending system with epoxy resin in different proportions were investigated by experiment. The mechanical properties of the three cured blend resin are the best when the ratios of reactive polyurethane to epoxy resin 6002 are 95∶5 by weight at the cure conditions of room temperature for 7days or room temperature for 12h add to 80℃ /4h.
出处
《精细与专用化学品》
CAS
2013年第8期31-34,共4页
Fine and Specialty Chemicals
关键词
聚氨酯
环氧树脂
湿固化
胶黏剂
力学性能
polyurethane
epoxy resin
moisture curing
adhesive
mechanical properties
