摘要
制备了硅烷接枝交联乙烯-醋酸乙烯酯共聚物(EVA)/氢氧化镁(MH)/氢氧化铝(ATH)复合材料。结果表明:过氧化二异丙苯引发硅烷接枝交联EVA的凝胶含量高于过氧化苯甲酰,硅烷接枝交联EVA的难易顺序为乙烯基三甲氧基硅烷>乙烯基三乙氧基硅烷>3-甲基丙烯酰氧基三甲氧基硅烷;阻燃剂用量一定时,交联阻燃EVA的拉伸强度和断裂伸长率都低于非交联阻燃EVA,二者的拉伸强度都随MH含量的增加而降低,LOI都随MH含量的增加先增加后降低,交联阻燃EVA的LOI比未交联的提高了约1%;MH阻燃的交联EVA热分解温度比纯EVA的提高了20～30℃,ATH阻燃的则降低了约5℃;ATH和MH具有协同效应,二者的最佳配比约为2:1。
Silane-Crosslinked halogen-free flame retardant poly （ethylene-co-vinyl acetate） （EVA） composite were prepared with magnesium hydroxide（MH） and aluminum hydroxide（ATH）as flame retardants, Research results showed that cross-linked degree of EVA initiated by dicumyl peroxide was higher than that by benzoyl peroxide, the extents of silane grafting reactions of EVA were vinyl trimethoxysilane 〉 vinyl triethoxysilane 〉 γ-methacryloxypropyltrimethoxysilane in the order; mechanical properties of flame retardant erosslinked EVA were better than that of non-crosslinked EVA, both tensile strength were decreased with the increase of content of MH, and LOI of flame retardant erosslinked EVA was one percent higher than that of non-crosslinked EVA, when total content of flame retardant was unchanged; thermal decomposition temperature of crosslinked EVA/MH was 20 - 30 ℃ higher than that of pure EVA, while crosslinked EVA/ATH was approximate 5 ℃ lower than pure EVA; there were synergistic effects between MH and ATH, the optimum proportion of ATH/ MH was about 2： 1.
作者
张建耀
ZHANG Jianyao(School of Materials Science and Engineering,Tongji University, Shanghai 201804, China;School of Chemistry and Material Engineering, Changshu Institute of Technology, Changshu ,Jiangsu 215500 ,China)
出处
《塑料》
CAS
CSCD
北大核心
2018年第2期41-45,49,共6页
Plastics
关键词
硅烷交联
无卤阻燃
乙烯-醋酸乙烯酯共聚物
氢氧化镁
氢氧化铝
silane-crosslinking
halogen-free flame retardant
poly （ ethylene-co-vinyl acetate ）
magnesium hydroxide
aluminum hydroxide
