文献类型：期刊文献

中文题名：茂金属聚乙烯的阻燃改性研究

英文题名：Flame Resistance Modification of Metallocene Polyethylene

作者：孙建忠[1];汪济奎[1];王耀先[1];程树军[1]

机构：[1]华东理工大学材料科学与工程学院,超细材料制备与应用教育部重点实验室,上海200237

年份：2009

卷号：38

期号：3

起止页码：75

中文期刊名：塑料

外文期刊名：Plastics

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD_E2011_2012】；

基金：华东理工大学超细材料制备与应用教育部重点实验室开放课题基金项目(YD0130202)

语种：中文

中文关键词：茂金属聚乙烯;阻燃;氢氧化镁;水滑石;乙烯醋酸乙烯共聚物

外文关键词：metallocene polyethylene;flame resistance;magnesium hydrate;hydrotalcite ;ethylene vinyl acetate copolymer

摘要：分别以氢氧化镁和水滑石为阻燃剂,加入到茂金属聚乙烯(MPE)基体中,通过开炼共混、模压成型对MPE进行阻燃改性。研究了氢氧化镁的粒径大小对材料力学和阻燃性能的影响以及氢氧化镁和水滑石在MPE基体中阻燃效果的差异。同时还比较了两种不同醋酸乙烯基(VA)含量的乙烯醋酸乙烯共聚物(EVA)对MPE的力学性能的影响。结果表明:氢氧化镁的粒径大小只影响材料的力学性能,几乎与材料的阻燃性能无关。水滑石特有的结构使其具有比氢氧化镁更优越的阻燃性能。EVA的引入能增强MPE的断裂伸长率,经比较EVA2805(VA含量28%)的综合性能优于EVA4055(VA含量40%)。
Metallocene polyethylene （MPE） was synthesized by mixing in the mixing roll machine and molding in the block press, using magnesium hydrate and hydrotalcite as the flame retardants respectively in order to improve the flame retardant property of MPE. The differences between magnesium hydrate and hydrotalcite on flame-retardant properties were studied,and the effect on the mechanical properties of MPE with different sizes of magnesium hydrate was also investigated. Furthermore, ethylene vinyl acetate copolymer（EVA） with different contents of vinyl acetate was mixed with MPE to analyze the different impacts on mechanical properties of MPE. It was found that the size of magnesium hydrate had nothing to do with the flame-retardant properties of materials but influenced the mechanical properties of materials. Due to the special structure of hydrotalcite,it was superior to magnesium hydrate on flame resistance. The elongation at break of MPE could be increased by adding EVA and the integrated performance of EVA2805 containing 40 % VA was better than EVA4055 containing 40 % VA.