【摘要】 以蓖麻油、三羟甲基丙烷为交联剂,采用环氧树脂和丙烯酸酯为改性剂合成多重改性水性聚氨酯乳液.用傅立叶变换红外光谱、凝胶渗透色谱、粒度分析仪等对合成的改性聚氨酯乳液的结构和性能进行了表征.同时采用该乳液配胶制成了汽车内饰用的胶粘剂,当内饰材料聚氨酯和聚氯乙烯之间、木材和皮革之间粘接时,剥离强度测试时材料均遭破坏;当聚氨酯和真皮之间、橡胶和真皮之间粘接时,剥离强度分别为1.66 kN/m和1.41 kN/m,其性能优于未改性的聚氨酯(PU)乳液及国外同类产品.更多还原

【Abstract】 The waterborne polyurethane emulsion with multiple modification was synthesized with castor oil and trimethylolpropane(TMP) as the cross-linkers as well as with epoxy resin and acrylate as the modification agents.The structure and properties of the modified emulsion was also characterized using Fourier Transform Infrared(FTIR),Gel Permeation Chromatography(GPC) and Particle Size Analyzer.The modified emulsion was then used to formulate the adhesive to be used for car decoration,followed by the peel strength tests to investigate the perfor-(mance) of the adhesive. The results show that the materials are all broken during the tests for the adhesives between PVC(polyvinyl chloride) and polyurethane(PU),wood and leather,and that the peel strength reaches(1.66kN/m) and 1.41kN/m for the adhesives between PU and leather,rubber and leather,respectively.It is thus concluded that the adhesive formulated by the waterborne polyurethane emulsion with multiple modification is better than that formulated by unmodified PU and the foreign products of the same kind.更多还原