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
相关论文
共 16 条
  • [11] Jiang X, Drzal L T., Multifunctional high-density polyethylene nanocomposites produced by incorporation of exfoliated graphene nanoplatelets 2: crystallization, thermal and electrical properties, Polymer Composites, 33, pp. 636-642, (2012)
  • [12] Dong Q, Zheng Q, Zhang M Q, Et al., Studies on the morphology and the thermal properties of high-density polyethylene filled with graphite, Journal of Materials Science, 41, pp. 3175-3178, (2006)
  • [13] Zhong W H., Effects of 3D printing parameters on mechanical properties and forming quality of PLA, (2019)
  • [14] Weng Z, Wang J, Senthil T, Et al., Mechanical and thermal properties of ABS/montmorillonite nanocomposites for fused deposition modeling 3D printing, Materials & Design, 102, pp. 276-283, (2016)
  • [15] Wu H, Lu C, Zhang W, Et al., Preparation of low-density polyethylene/low-temperature expandable graphite composites with high thermal conductivity by an in situ expansion melt blending process, Materials & Design, 52, pp. 621-629, (2013)
  • [16] Zhou W, Qi S, An Q, Et al., Thermal conductivity of boron nitride reinforced polyethylene composites, Materials Research Bulletin, 42, pp. 1863-1873, (2007)
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