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Surface-Modified Garnet Particles for Reinforcing Epoxy Composites

School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
Hunan Key Lab of Mineral Materials and Application, Central South University, Changsha 410083, China
Hunan Nonferrous Xintianling Tungsten Industry Co. Ltd., Chenzhou 423000, China
Author to whom correspondence should be addressed.
Minerals 2018, 8(5), 217;
Received: 6 March 2018 / Revised: 14 May 2018 / Accepted: 17 May 2018 / Published: 19 May 2018
(This article belongs to the Special Issue Mineral Materials)
PDF [5497 KB, uploaded 21 May 2018]


The present study investigated the tribological performance of epoxy (EP) matrix composites enhanced with natural garnet. The garnet was surface-modified with sodium stearate for optimal performance. Composites comprising different contents and particle sizes of modified garnet (MG) were prepared with a mixture of EP and MG. The sodium stearate-bonded garnet and EP formed a stable structure. Tribological performance was measured by a ball-on-plate apparatus under permanent dry sliding conditions and a wear track was obtained by an optical profilometer. The wear mechanism was explored by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) images. Wear test results showed that the coefficient of friction for all EP/MG composites decreased compared with that for neat epoxy. The results also indicated that the addition of MG can evidently improve the tribological properties of EP matrix composites. View Full-Text
Keywords: epoxy composites; garnet; reinforcement; surface modification; friction epoxy composites; garnet; reinforcement; surface modification; friction

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Jiang, Y.; Xu, F.; Liu, K.; Feng, Q. Surface-Modified Garnet Particles for Reinforcing Epoxy Composites. Minerals 2018, 8, 217.

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