Wear resistant epoxy composites with diisocyanate-based self-healing functionality

被引：69

作者：

Khun, N. W. ^{[1
]}

Sun, D. W. ^{[1
]}

Huang, M. X. ^{[1
]}

Yang, J. L. ^{[1
]}

Yue, C. Y. ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

来源：

WEAR | 2014年 / 313卷 / 1-2期

关键词：

Sliding wear; Self-healing; Polymer; HDI filled microcapsule; TRIBOLOGICAL BEHAVIOR; POLYMER COMPOSITES; MICROVASCULAR NETWORKS; CARBON NANOTUBES; SLIDING WEAR; FRICTION; COATINGS; ROUGHNESS; SURFACE; MICROENCAPSULATION;

D O I：

10.1016/j.wear.2014.02.011

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Hexamethylene diisocyanate (HDI) filled microcapsules were developed and incorporated in epoxy matrices to form a new type of wear resistant epoxy composites. The tribological properties of the epoxy composites were systemically investigated. The friction and wear of the composites slid against a Cr6 steel ball at different sliding speeds under various normal loads decreased with increased microcapsule content because of the lubricating effect of released HDI liquid from ruptured microcapsules during the wear test and the self-healing process of the released HDI liquid with the moisture to form new polyurea layers on the wear track. It can be concluded that the incorporation of microencapsulated HDI liquid is an effective way to lessen the wear of the epoxy composites during sliding via the self-healing process with a concurrent self-lubricating effect of the released HDI liquid. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：19 / 28

页数：10

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