Preparation and Properties of Thermal Conductive Polyethylene /Expanded Graphite Composites for Fused Deposition Modeling

被引：0
作者：
Xue Z. [1 ]
Li Q. [1 ]
Zhang W. [1 ]
Lu C. [1 ]
机构：
[1] State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu
来源：
Lu, Canhui (canhuilu@scu.edu.cn) | 1600年 / Sichuan University卷 / 36期
关键词：
Expanded graphite; Fused deposition modeling; Polyethylene; Solid-state shear milling;
D O I：
10.16865/j.cnki.1000-7555.2020.0200
中图分类号：
学科分类号：
摘要：
Well dispersion of expanded graphite (EG) as filler in the polyethylene (PE)/EG composite system was realized via solid-state shear milling (S3M). And the effects of EG content and S3M on the properties of composites such as mechanical properties, microstructure, crystallization, rheology and thermal expansion coefficient were studied. The results show that with the increase of EG content, the crystallinity of PE/EG composites increases at first and then decreases, while the modulus and thermal conductivity gradually increase, and the tensile strength, elongation at break, thermal expansion coefficient and melting point decrease. Under the same content of EG, S3M processing can dramatically improve the compatibility between PE and EG. The EG size becomes smaller and more uniform with enhanced interactions. The mechanical properties of composite materials are improved. In the meantime, the degree of crystallinity and the melting point of PE further decrease. This composite system exhibits high complex viscosity and storage modulus. All these attributes make the composites feasible for FDM 3D printing with improved resolution. © 2020, Editorial Board of Polymer Materials Science & Engineering. All right reserved.
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页码：88 / 96
页数：8
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