功能化石墨烯和有机硅双重改性水性聚氨酯的结构与性能研究  

Study on structure and properties of waterborne polyurethane bi-modified by functionalized graphene and silane

作　　者：赵昭 马兴元 张铭芮 刘帅 丁博 韩振斌 ZHAO Zhao;MA Xing-yuan;ZHANG Ming-rui;LIU Shuai;DING Bo;HAN Zhen-bin(College of Light Industry and Engineering,Shaanxi University of Science ＆ Technology,Xi＇an 710021,China)

机构地区：[1]陕西科技大学轻工科学与工程学院,陕西西安710021

出　　处：《现代化工》2018年第10期99-103,共5页Modern Chemical Industry

基　　金：国家863计划项目(2015AA033903)

摘　　要：以异佛尔酮二异氰酸酯(IPDI)、功能化石墨烯(IGN)、聚酯二元醇-2000、二羟甲基丙酸(DMPA)、1,4-丁二醇(BDO)为原料,采用石墨烯表面接枝的方法,通过γ-氨丙基三乙氧基硅烷(KH-550)进行封端、三乙胺中和、乳化后得到了IGN和KH-550双重改性的水性聚氨酯乳液(IGN/Si-WPU)。以IGN/Si-WPU为成膜剂,采用平板制膜法制备了IGN/Si-WPU膜,并研究了IGN质量分数和KH-550对水性聚氨酯涂层力学性能的影响。研究结果表明,当w(硅氧烷偶联剂)为3%、w(IGN)为1%时,所制备的双重改性水性聚氨酯比未改性的水性聚氨酯综合性能更加优异。IGO/Si-WPU emulsion is gained by using isophorone diisocyanate,functionalized graphene,polyester diol-2000,dimethoxyl propionic acid and 1,4-butanediol as raw materials,through grafting with graphene,sealing end by 3-aminopropyl triethoxy silane（KH-550）,and neutralization and emulsifying by triethylamine.IGO/Si-WPU membranes are prepared by flat plate method with IGO/Si-WPU as the film forming agent.The effects of contents of functionalized graphene and KH-550 on the mechanical properties of waterborne polyurethane coating are studied.The results show that the bi-modified waterborne polyurethane has better comprehensive properties than unmodified waterborne polyurethane when w（KH-550）=3% and w（functionalized graphene） = 0.3%.

关 键 词：功能化石墨烯 水性聚氨酯 Γ-氨丙基三乙氧基硅烷 疏水性 力学性能 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业]