摘要
以不同牌号的有机硅改性聚醚(MS)预聚体为基础聚合物,制备了一系列MS密封胶。先研究不同分子结构的MS预聚体、炭黑用量对MS密封胶拉伸强度、剪切强度的影响;再研究制备出的MS密封胶对不同型号的铝基材的黏接性能及耐候性。研究结果表明:MS预聚体的分子结构对MS密封胶的强度和弹性有较大影响;以重质碳酸钙和纳米碳酸钙复配并用质量分数为7%的炭黑作为填料,可得到高模量的MS密封胶,且其黏接性能和耐候性均较优异。
A series of MS sealants were prepared based on different grades of organosilicon-modified polyether(MS)prepolymer as base polymer.The effects of the MS prepolymer and the amount of carbon black on the tensile strength and shear strength of the MS sealant were investigated.Then the weatherability and bonding properties of the prepared MS sealants with different types of aluminum substrates were studied.The experimental results indicated that the molecular structure of MS prepolymer had a great influence on the strength and elasticity of MS sealant.Highmodulus MS sealant could be obtained by compounding heavy calcium carbonate,nano-calcium carbonate,with 7%carbon black as a filler.Furthermore,the adhesive properties and weather resistance of the resulting sealant were excellent.
作者
夏勇
孙小玲
孙翱魁
赖登旺
刘跃军
XIA Yong;SUN Xiaoling;SUN Aokui;LAI Dengwang;LIU Yuejun(School of Packaging and Materials Engineering,Hunan University of Technology,Zhuzhou Hunan 412007,China)
出处
《包装学报》
2018年第3期59-63,共5页
Packaging Journal
基金
国家自然科学基金资助项目(51704108)
湖南省重点实验室开放课题基金资助项目(FP201704)
关键词
MS密封胶
有机硅改性聚醚
拉伸强度
剪切强度
黏接性能
耐候性能
MS sealant
silicone modified polyether
tensile strength
shear strength
bonding property
weatherability
