摘要
采用紫外光接枝的方法,将甲基丙烯酸缩水甘油酯(GMA)接枝到苎麻织物上,再胺化、磷酸化,对苎麻织物进行阻燃改性,并利用手糊成型的方法制备了阻燃改性苎麻增强环氧树脂(EP)复合材料。用拉伸试验机和氧指数仪等研究了复合材料的力学性能和阻燃性能,用扫描电子显微镜观察了复合材料的拉伸断面形貌和燃烧残炭,并讨论了不同GMA接枝率对复合材料力学性能和阻燃性能的影响。结果表明,阻燃改性的苎麻织物与EP之间的粘结效果明显改善,提高了复合材料的力学性能和阻燃性能,接枝45%GMA的苎麻胺化、磷酸化后与EP复合,可使复合材料的极限氧指数达到25.6%。
The ramie fabric was modified with glycidyl methacrylate（GMA） via ultraviolet grafting method, then it was arninated and phosphorylated, and composed with epoxy resin to prepare flame retardant ramie reinforced epoxy resin composites. The mechanical behaviour, flame retardancy and tensile fracture morphology of composites were studied.The results show that it can improve cohesiveness between ramie and epoxy resin when ramie fabric is modified.The mechanical properties and flame retardancy of flame retardant ramie reinforced epoxy resin composites are improved.The limited oxygen index of composites reinforced with ramie which is grafted with 45% GMA can reach 25.6%.
出处
《工程塑料应用》
CAS
CSCD
北大核心
2013年第7期8-11,共4页
Engineering Plastics Application
基金
湖北省自然科学基金项目(2010CDB0491)
关键词
环氧树脂
苎麻
接枝改性
阻燃
复合材料
epoxy resin
ramie
grafting modification
flame retardant
composite
