HIPS／改性氢氧化镁晶须复合材料的研究  

Study on HIPS/Modified Magnesium Hydroxide Whisker Composites

作　　者：刘生鹏[1,2] 程均[2] 应继儒[1] 周兴平[1] 解孝林[1] 

机构地区：[1]华中科技大学化学与化工学院,湖北省材料化学与服役失效重点实验室,湖北武汉430074 [2]武汉工程大学化工与制药学院,绿色化工过程省部共建教育部重点实验室,湖北武汉430073

出　　处：《塑料工业》2009年第6期28-31,共4页China Plastics Industry

基　　金：国家自然科学基金(50573026);湖北省新型反应器与绿色化学工艺重点实验室开放课题资助

摘　　要：采用乙烯基硅烷在氢氧化镁(MH)晶须表面引入乙烯基后与苯乙烯进行原位聚合,得到了聚苯乙烯改性的氢氧化镁晶须(MMH)。将MMH与高抗冲聚苯乙烯(HIPS)熔融复合制备了HIPS/MMH复合材料,研究了复合材料的微观结构和力学性能。结果表明,聚苯乙烯包覆在MH表面,并形成了共价键结合;原位聚合改性改善了MH在HIPS基体中的分散性,增强了MH和HIPS的界面相互作用,显著提高了HIPS/MMH复合材料的拉伸强度与冲击韧性。Vinyl silane was used in the magnesium hydroxide （MH） whisker surface with the introduc- tion of vinyl with styrene by in situ polymerization got the polystyrene modified magnesium hydroxide whisker （MMH）. The high impact polystyrene （HIPS） /MMH composites were prepared with melt mixing and injec- tion molding. The micro-structure and properties of HIPS/MH composites were characterized. The results re- vealed that polystyrene （PS） was covered on the surface of MH and covalent bonds were formed between them. PS grafted onto the surface of MH improved the dispersion of MH in the HIPS matrix, enhanced the in- termolecular interaction between the MH and HIPS matrix and the tensile strength and impact toughness of HIPS/MH composites.

关 键 词：高抗冲聚苯乙烯 氢氧化镁晶须 原位聚合 微观结构 力学性能 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]