以短碳纤维、鳞片石墨和膨胀石墨为填料制备高导热聚酰胺6复合材料,具有良好的机械性能、加工性能和低吸水率

IF 1.7 4区 工程技术 Q4 POLYMER SCIENCE
Bao-Gang Fu, Long-Xi Yang, Wenwen Xiang, Xiaoxuan Zou, Wenli Dai
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引用次数: 0

摘要

摘要在导热填料高填充的情况下,如何保持导热聚合物复合材料的力学性能和可加工性是一项挑战。将片状石墨(FG)、膨胀石墨(EG)和短碳纤维(CF)组成的复合填料体系引入到PA6基体中。在PA6中添加EG可以更有效地提高其导热性,而添加FG则由于其润滑作用而保持了良好的加工性。此外,FG和EG的混合填充对导热系数的增强具有协同效应。FG、EG、CF三元填充制得高导热PA6复合材料,强度高,加工性能好,吸水率低。10CF/20FG/10EG/PA6复合材料的导热系数达到3.45 W/m k,是纯PA6的12.3倍。抗折强度达到110 MPa,比纯PA6提高了37 %,吸水率降低到纯PA6的1 / 4。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Highly thermally conductive polyamide 6 composites with favorable mechanical properties, processability and low water absorption using a hybrid filling of short carbon fiber, flake graphite and expanded graphite
Abstract It is a challenge to maintain the mechanical properties and processability of thermally conductive polymer composites in the presence of high filling of heat conductive filler. An optimized hybrid filler system composed of flake graphite (FG), expanded graphite (EG) and short carbon fiber (CF) was introduced into PA6 matrix. The addition of EG to PA6 was found to be more effective in improving its thermal conductivity, while the addition of FG maintained favorable processability due to its lubrication effect. Furthermore, the hybrid filling of FG and EG has a synergistic effect on the enhancement of thermal conductivity. The ternary filling of FG, EG and CF produced highly heat conductive PA6 composites with high strength, favorable processability, and low water absorption. The thermal conductivity of 10CF/20FG/10EG/PA6 composite reached 3.45 W/m k, which is 12.3 times of pure PA6. Additionally, the flexural strength increased to 110 MPa, which is 37 % higher than that of pure PA6, and the water absorption was reduced to one quarter that of pure PA6.
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来源期刊
Journal of Polymer Engineering
Journal of Polymer Engineering 工程技术-高分子科学
CiteScore
3.20
自引率
5.00%
发文量
95
审稿时长
2.5 months
期刊介绍: Journal of Polymer Engineering publishes reviews, original basic and applied research contributions as well as recent technological developments in polymer engineering. Polymer engineering is a strongly interdisciplinary field and papers published by the journal may span areas such as polymer physics, polymer processing and engineering of polymer-based materials and their applications. The editors and the publisher are committed to high quality standards and rapid handling of the peer review and publication processes.
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