摘要
基于Al(OH)_3粉体与PVC基体的界面设计和调控,采用表面原位化学组合改性方法,在Al(OH)_3表面依次化学键合烷基酚醛树脂、丁腈橡胶等几种大分子改性剂,形成极性逐渐过渡的梯度界面层。当改性Al(OH)_3在PVC复合材料中的用量为80份时,材料的缺口冲击强度达到最大值,分别为添加等量偶联剂改性Al(OH)_3、未改性Al (OH)_3复合材料的2．5和2．7倍,是基体树脂的1．5倍,获得了具有高阻燃消烟性能,同时改善了力学和加工性能的综合性能良好的高填充复合材料。通过扫描电镜分析表明,Al(OH)_3粒子经过表面原位化学组合方法处理,在PVC中分散均匀,与塑料基体结合良好,并形成了以Al(OH)_3粒子为核、以多层大分子改性剂为壳的软壳硬核结构。
The surface of Al（OH）3 powder was chemically bonded in sequence with alkyl phenolicformaldehyde and acrylonitrile-butadiene rubber generating a polarity gradient. When the modified Al（OH）3 was introduced into PVC at 80 phr, the Izod impact strength of the filled material reaches a maximum, which was 2.5 and 2.7 times higher than its counterpart with coupling agent modified and unmodified Al（OH）3, respectively, and was 1.5 times higher than neat PVC. The flame-retardant and smoke-suppression properties were also improved. SEM showed that the Al（OH）3 particle possessed a ＂hard core-soft shell＂ structure and dispersed finely in the matrix.
出处
《中国塑料》
CAS
CSCD
北大核心
2006年第9期23-27,共5页
China Plastics
基金
福建省科技厅资助项目(编号2004J017)福建省教育厅资助项目(编号JA03039)
关键词
表面原位化学组合改性
氢氧化铝
聚氯乙烯
surface in-situ chemistry multi-modification
hydroxide
polwinvl chloride
