Effects of Particle Size and Content of Alumina Filler on Mechanical Properties of Epoxy Resin Composite Materials

被引：2

作者：

Bai D. ^{[1
]}

He Y. ^{[2
]}

Li T. ^{[1
]}

Wang R. ^{[2
]}

Liu Z. ^{[1
]}

Wang Z. ^{[2
]}

Jin H. ^{[2
]}

机构：

[1] Xi'an Branch, China Academy of Space Technology, Xi'an

[2] State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an

来源：

Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2021年 / 55卷 / 04期

关键词：

Alumina filler; Epoxy resin composite material; Filler morphology; Mechanical properties; Microstructure;

D O I：

10.7652/xjtuxb202104020

中图分类号：

学科分类号：

摘要：

Bisphenol A epoxy resin was used as basic resin, and micron alumina with different morphology and particle size was used as filler to design and prepare composites. By testing and analyzing the mechanical properties and microstructure of the composites, the influences of the morphology, particle size and content of alumina filler on the mechanical properties of the epoxy resin composites were studied, and the influence mechanism was analyzed. The results show that the mechanical properties of the epoxy resin composites increase first and then decrease with the increase of alumina filler content. When the filler is 5 μm spherical alumina particles and the volume fraction of filler is 3.22%, the mechanical properties of the composite are better. The tensile strength and impact strength can reach 77.62 MPa and 13.92 kJ/m2 respectively, which are 30.48% and 44.10% higher than that of pure epoxy resin. It can be observed from the microstructure that the alumina filler in the epoxy resin forms crazes around itself, which can absorb the external stress and improve the toughness of the composite. By observing the distribution of alumina filler in epoxy resin, it can be found that 5 μm spherical alumina particle has better distribution in epoxy resin and better interface with epoxy resin, which makes the composite has better mechanical properties. © 2021, Editorial Office of Journal of Xi'an Jiaotong University. All right reserved.

引用

页码：181 / 188

页数：7

共 18 条

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