Influence of monomer conformation on the mechanical and tribological properties of thermosetting polyimides

被引：10

作者：

Wang, Yanming ^{[1
,2
]}

Tao, Liming ^{[1
]}

Wang, Tingmei ^{[1
]}

Wang, Qihua ^{[1
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 123期

基金：

中国国家自然科学基金;

关键词：

MOLECULAR-WEIGHT; THERMOPLASTIC POLYIMIDES; FRICTION; WEAR; PERFORMANCE; MEMBRANES; ADHESIVE; BEHAVIOR;

D O I：

10.1039/c5ra20166g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A series of thermosetting polyimide oligomers with different diamines (isomers) and same calculated number-average molecular weights (M-n) were synthesized with BPDA (biphenyl-tetracarboxylic acid dianhydride), 4,4'-ODA (4,4'-oxydianiline), 3,4'-ODA (3,40-oxydianiline) and 4-PEPA (4-phenylethynylphthalic anhydride). Herein, we investigate the effect of monomer configuration on the mechanical, thermal and tribological properties of thermosetting polyimides. Experimental results demonstrate the relationship between molecular configuration and mechanical, thermal and tribological properties. It is revealed that as the content of 4,4'-ODA increases, T-g, Young's modulus and hardness increases and coefficient of friction (COF) and wear rate (WR) decrease under most conditions. Compared with variations of COFs and WRs of TPIs to velocity or load, it is easy to confirm the major influencing factor under different conditions.

引用

页码：101533 / 101543

页数：11

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