摘要
采用一种新型的超细全硫化粉末橡胶/蒙脱土复合粉末(UFPRM),可以制备出剥离型的尼龙6/橡胶/天然粘土(尼龙6/UFPRM)纳米复合材料,所用的橡胶是一种具有特殊结构的超细全硫化粉末橡胶(UFPR)。微观分析表明,橡胶粒子在尼龙6基体中分散良好,同时天然粘土在橡胶粒子之间的基体中剥离。在一定份数下,复合粉末可以同时提高尼龙6的韧性、刚性及耐热性;随着复合粉末含量的增加,材料的冲击强度进一步增加。而且,复合粉末对高分子量尼龙6的增强、增韧效果好于低分子量尼龙6。进一步研究发现,在适当的剪切速率下,尼龙6/橡胶/天然粘土纳米复合材料可以获得较好的综合力学性能。
Exfoliated nylon6/rubber/unmodified clay nanocomposites were prepared on basis of a novel compound of ultra-fine full-vulcanized powdered rubber/montmorillonite （UFPRM）. The rubber in the nanocomposites is a kind of ultra-fine full-vulcanized powdered rubber （UFPR） with special structure. Microscopic morphologies of nylon6/ rubber/unmodified clay （nylon6/UFPRM） nanocomposites indicated that UFPR particles were well dispersed in nylon6, and the unmodified clay was exfoliated in the matrix among the UFPR particles. At a certain loading of UFPRM, UF- PRM could improve the toughness, stiffness and heat resistance of nylon6 simultaneously. Adding UFPRM resulted in a further increase in toughness of nylon6. The toughing and reinforcing effects of UFPRM to high molecular weight nylon6 was better than these to low molecular weight nylon6. Further research showed that nylon6/rubber/unmodified clay nanocomposites exhibited well balanced mechanical property at an optimum screw speed.
出处
《化工新型材料》
CAS
CSCD
北大核心
2006年第8期45-48,56,共5页
New Chemical Materials
基金
国家重大基础研究专项经费资助
项目编号(2005CB623805)
