Friction and Wear of Epoxy Composites Containing Silica Nanoparticles Grafted by Hyperbranched Aromatic Polyamide

被引：2
|
作者：
Yu, Ying [2 ]
Rong, Min Zhi [1 ]
Zhang, Ming Qiu [1 ]
机构：
[1] Sun Yat Sen Zhongshan Univ, Inst Mat Sci, Guangzhou 510275, Guangdong, Peoples R China
[2] Sun Yat Sen Zhongshan Univ, Minist Educ, DSAPM Lab, Key Lab Polymer Composite & Funct Mat, Guangzhou 510275, Guangdong, Peoples R China
来源：
POLYMERS & POLYMER COMPOSITES | 2012年 / 20卷 / 08期
基金：
中国国家自然科学基金;
关键词：
TRIBOLOGICAL PERFORMANCE; SLIDING WEAR; SIC NANOPARTICLES; BEHAVIOR; SURFACE; NANOCOMPOSITES; POLYMERIZATION;
D O I：
10.1177/096739111202000802
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Nano-sized SiO2 particles grafted with hyperbranched aromatic polyamide were employed as fillers for fabricating epoxy based composites. The hyperbranched aromatic polyamide was selected because its terminal amine groups could take part in the curing reaction of epoxy resin and covalently connect silica nanoparticles with the matrix. The experimental results proved the occurrence of this reaction, and indicated that the presence of the grafted SiO2 in epoxy does not change the overall curing mechanism of epoxy. In comparison to the composites filled with untreated nano-SiO2 particles, the composites with the grafted nano-SiO2 exhibited significantly improved sliding wear resistance and reduced frictional coefficient owing to the strong filler/matrix interfacial bonding. Moreover, hyperbranched aromatic polyamide grafted nano-SiO2 was more effective to enhance tribological properties of epoxy than linear polymers grafted versions.
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页码：673 / 681
页数：9
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