PDMS-PI composite coating toward multi-purpose development: Hydrophobic, low-friction/wear, and heat-resistance

被引：11

作者：

Si, Chengyi ^{[1
]}

Cai, Meng ^{[2
]}

Liu, Guojuan ^{[1
]}

Zhang, Yawen ^{[1
]}

Fan, Xiaoqiang ^{[1
]}

Zhu, Minhao ^{[1
,2
]}

机构：

[1] Southwest Jiaotong Univ, Sch Mat Sci & Engn, Key Lab Adv Technol Mat, Minist Educ, Chengdu 610031, Peoples R China

[2] Southwest Jiaotong Univ, Tribol Res Inst, Sch Mech Engn, Chengdu 610031, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2023年 / 189卷

基金：

中国国家自然科学基金;

关键词：

Polyimide; Polydimethylsiloxane; Low-friction/wear; Coatings;

D O I：

10.1016/j.triboint.2023.108919

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Despite polyimide (PI) has been regarded as heat-resistant aviation material, but its high friction coefficient and insufficient abrasion resistance hinder the wide application. Herein, a versatile PDMS-PI composite coating with double-layer structure was prepared by crosslinking hybrid. The effect of polydimethylsiloxane (PDMS) on the hydrophobic, heat-resistant and tribological properties of PDMS-PI composite coating was explored. As expected, compared with the PI and SiO2-PI, PDMS-PI coating achieved the contact angle of 108.5 degrees and only 5 wt% heat loss temperature at 578 celcius. Additionally, its wear rate obviously decreased by 38.5 %, and the friction coefficient declined from 0.33 to 0.07. The improvement contributes to excellent hydrophobic and heat resistance of dense protective layer and low-friction/wear of the PDMS coating layer

引用

页数：11

共 42 条

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