摘要
无溶剂聚氨酯胶黏剂是一种新型的环保型胶黏剂,有着比水性聚氨酯更加优异的性能。实验采用聚多元醇(PPG、PTMG)、甲苯二异氰酸酯(TDI)为主要原料,在特定条件下合成聚氨酯预聚体(PUP),然后加入环氧树脂(E44)和缩水甘油(Glycidyl)对聚氨酯预聚体进行封端反应,再加入环氧树脂(E44)与活性稀释剂,制备出环保型无溶剂环氧封端聚氨酯/环氧树脂胶黏剂,同时采用固化剂间苯二甲胺(m-XDA)与促进剂2,4,6-二氨基甲基苯酚(DMP-30)固化,大大提升了体系的固化速度。考查了不同配比的聚氨酯与环氧树脂,及采用不同的活性稀释剂对胶黏剂的性能的影响,结果表明:添加了15%的660型稀释剂的G/E-PU(PTMG-2000)/EP(E-44)/活性稀释剂复合体系的黏度仅为0.3Pa.s;加入5%的D-085型稀释剂的G/E-PU(PTMG-2000)/EP(E-44)/活性稀释剂体系其拉伸剪切强度最好,可以达到21.63MPa。
Polyurethane adhesive without solvent is a new type of environmental-friendly adhesive; it has more excellent performances than the waterborne polyurethane does. E-44 and glycidyl-terminated PU without solvent is prepared with using polyether polyol, TDI, E-44, glyeidyl and re- active diluents as main raw materials. The curing velocity of system is greatly improved by using m-XDA and DMP-30. The effects of ratio of PU to epoxy resin and the different reactive diluents on the performance of system are studied. The results show that： the viscosity of the composite system of G/E-PU （PTMG-2000） / EP （E-44） / reactive diluents is 0.3Pa＇s which is with 15% of 660 diluent added; the best of tensile shear strength of the composite system of G/E-PU （PTMG-2000） / EP （E-44） / reactive diluents is 21.63MPa which is with 5% of D-085 diluent added.
出处
《化学与粘合》
CAS
2012年第5期35-39,共5页
Chemistry and Adhesion
基金
中国工程物理研究院双百人才基金资助课题项目(编号:20088074)
关键词
环保型无溶剂胶黏剂
活性稀释剂
聚氨酯
环氧树脂
The environmental-friendly and solvent-free adhesive
reactive diluent
polyurethane
epoxy resin
