Self-lubrication waterborne epoxy composite coating with amphiphilic Janus nanoparticles

被引：7

作者：

He, Hailing ^{[1
]}

Liu, Yanfei ^{[3
]}

Xu, Yunjing ^{[3
,4
]}

Yu, Shengtao ^{[3
]}

Wang, Wenzhong ^{[3
]}

Liang, Fuxin ^{[2
]}

机构：

[1] Southwest Jiaotong Univ, Sch Mech & Aerosp Engn, Appl Mech & Struct Safety Key Lab Sichuan Prov, Chengdu 610031, Peoples R China

[2] Tsinghua Univ, Inst Polymer Sci & Engn, Dept Chem Engn, Beijing, Peoples R China

[3] Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China

[4] Beijing Res Inst Mech & Elect Technol Co Ltd, CAM, Beijing 100083, Peoples R China

来源：

PROGRESS IN ORGANIC COATINGS | 2024年 / 189卷

基金：

中国国家自然科学基金;

关键词：

Janus nanoparticles; Silica; PTFE; Waterborne coating; Lubrication; Wear resistance; TRIBOLOGICAL BEHAVIORS; ELASTIC-MODULUS; WEAR BEHAVIOR; PERFORMANCE; PARTICLES; FRICTION; HYBRID; PTFE;

D O I：

10.1016/j.porgcoat.2024.108303

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Eco-friendly waterborne bonded solid lubricating coating (BSLC) has attracted increasing concern for surface protection engineering. However, the development of BSLC with outstanding comprehensive performance (lubrication, wear resistance and flexibility) remains challenging. In this study, surface-partitioned Janus nanoparticles (JNPs) was specially designed and applied to modify waterborne epoxy (EP) BSLC, in which the hydrophobic polytetrafluoroethylene (PTFE) and hydrophilic silica acted as soft side and hard side of PTFE@Silica JNPs, respectively. With unique amphipathicity, the hydrophobic PTFE can be uniformly dispersed in waterborne EP. The attained EP-JNPs composite coating with a moderate additive amount of JNPs (i.e., EP-JNPs20 wt%) has desirable lubrication and anti-wear (coefficient of friction and wear volume are about 80 % and 90 % lower than EP, respectively.). The formed PTFE tribofilms and the stiffening effect of silica lobes collaborate together to realize the outstanding self-lubrication of EP-JNPs composite coating. This drives the application of waterborne BSLC in the fields of wear-resistance coatings.

引用

页数：11

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