The influence of interphase on nylon-6/nano-SiO2 composite materials obtained from in situ polymerization
The influence of interphase on nylon-6/nano-SiO2 composite materials obtained from in situ polymerization
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DOI：
10.1002/pi.1173
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发表时间：
2003-06-01
影响因子：
3.2
通讯作者：
Guo, ZX
中科院分区：
文献类型：
--
作者：
Li, Y;Yu, J;Guo, ZX
采用三种商用硅烷偶联剂、钛酸酯偶联剂和铝酸酯偶联剂对纳米SiO_2进行预处理，通过原位聚合法制备了尼龙-6/纳米SiO_2复合材料。研究了不同复合体系中形成的中间相及其对材料性能的影响。结果表明，不同复合体系的界面相互作用不同，添加4.3wt%的前处理二氧化硅对复合材料的刚性和韧性均有改善作用。前处理二氧化硅的存在对尼龙基质的非等温结晶行为没有明显的影响。与纯尼龙-6相比，经处理的二氧化硅复合材料具有略高的动态粘度和较好的高频储能弹性。(C)2003年化学工业学会。
Three commercially available silane, titanate and aluminate based coupling agents were used to pretreat nano-SiO2 for the preparation of nylon-6/nano-SiO2 composites via in situ polymerization. The interphases formed in different composite systems and their influence on material properties were investigated. Results indicated that the interfacial interactions differed between composite systems, whereas rigidity and toughness of composites were all improved by addition of pretreated silicas at an optimal content of 4.3 wt%. The presence of pretreated silicas did not have a distinct influence in the non-isothermal crystallization behaviour of the nylon matrix. The composites containing pretreated silicas had slightly higher dynamic viscosities and superior storage moduli at high frequency, compared with neat nylon-6. (C) 2003 Society of Chemical Industry.