Mechanical, thermal and tribological properties of polyimide/nano-SiO2 composites synthesized using an in-situ polymerization

被引：74
|
作者：
Zhao, Yuanliang [1 ,2 ]
Qi, Xiaowen [1 ,2 ]
Dong, Yu [3 ]
Ma, Jian [1 ,2 ]
Zhang, Qinglong [1 ,2 ]
Song, Laizhou [2 ,4 ]
Yang, Yulin [1 ,2 ]
Yang, Qingxiang [2 ,5 ]
机构：
[1] Yanshan Univ, Sch Mech Engn, Qinhuangdao 066004, Peoples R China
[2] Yanshan Univ, Aviat Key Lab Sci & Technol Gener Technol Self Lu, Qinhuangdao 066004, Peoples R China
[3] Curtin Univ, Sch Civil & Mech Engn, Dept Mech Engn, Perth, WA 6845, Australia
[4] Yanshan Univ, Sch Environm & Chem Engn, Qinhuangdao 066004, Peoples R China
[5] Yanshan Univ, Sch Mat Sci & Engn, Qinhuangdao 066004, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2016年 / 103卷
关键词：
Polyimide (PI)/nano-SiO2 composites; Homogeneous dispersion; Mechanical and thermal properties; Friction and wear; POLYIMIDE COMPOSITES; MOLECULAR-WEIGHT; SILICA; WEAR; BEHAVIORS; FRICTION; MONTMORILLONITE; CONDUCTIVITY; PERFORMANCE; PARTICLES;
D O I：
10.1016/j.triboint.2016.08.018
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Polyimide (PI)/nano-SiO2 composites were successfully fabricated via a novel in-situ polymerization. Microstructure, thermal properties, mechanical performance and tribological behaviors of these composites were investigated. The results indicate that nano-SiO2 dispersed homogeneously. Compared with pure PI, thermal stability and heat resistance are higher about 10 degrees C with the addition of 5 wt% nanoSiO(2). Compressive strength and modulus of composite with 5 wt% nano-SiO2 increase by 42.6 and 45.2%, respectively. The coefficient of friction (COF) of composite with 5 wt% nano-SiO2 decrease by 6.8% owing to the thick and uniform transfer films. Excess nano-SiO2 could adversely affect the COF of Pl/nano-SiO2 composite. Additionally, wear resistance deteriorates Obviously since transfer film exfoliates easily and nano-SiO2 aggregates on the surface of transfer films. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：599 / 608
页数：10
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