Effect of rubber on properties of nylon-6/unmodified clay/rubber nanocomposites
- 作者：Weifu Dong ; Xiaohong Zhang ; Yiqun Liu ; Hua Gui ; Qingguo Wang ; Jianming Gao ; Zhihai Song ; Jinmei Lai ; Fan Huang and Jinliang Qiao
- 关键词：Unmodified clay ; Nanocomposites ; Nylon ; Rubber
- 刊名：European Polymer Journal
- 出版年：2006
- 期刊代码：35_00143057
- 类别：ms
- 出版时间：October 2006
- 卷：42
- 期：10
- 页码：2515-2522
- 文件大小：377 K
摘要
Three nylon-6/unmodified clay/rubber nanocomposites with high toughness, high stiffness, high heat resistance and reduced flammability were studied in this paper, on basis of three compound powders of ultra-fine full-vulcanized powdered rubber (UFPR)/montmorillonite (UFPRM). It was found that all of the three UFPRs used in the study can help the silicate layers without organic treatment to be exfoliated in the nylon-6 matrix, despite some differences in compatibilities between them and nylon-6. Accordingly, the clay in different UFPRMs at the same loading content can lead to a similar improvement in stiffness and heat resistance of nanocomposites. In other words, UFPRs having different compatibilities with nylon-6 do not affect the stiffness and heat resistance of nanocomposites largely. However, the nylon-6 nanocomposites, modified with different UFPRMs, show different superior properties. Butadiene styrene vinyl-pyridine UFPRM (VP-UFPRM) is more effective in improving toughness of nylon-6. Nylon-6/silicone UFPRM (nylon-6/S-UFPRM) nanocomposite exhibits more reduced flammability, good flowability and high thermal stability. As for nylon-6/acrylate UFPRM (nylon-6/A-UFPRM) nanocomposite, it shows high toughness and thermal stability. Furthermore, the mechanism of unmodified clay exfoliation during the melt compounding and the effect of different UFPRs on the properties of the nylon-6/UFPRM nanocomposites are also discussed.