中国塑料 ›› 2025, Vol. 39 ›› Issue (10): 29-32.DOI: 10.19491/j.issn.1001-9278.2025.10.006

• 材料与性能 • 上一篇    下一篇

导热耐热聚乙烯管材的制备及性能研究

倪佳, 陈章成, 段凯歌(), 陈小蝶, 胡怡萱, 梅振威, 周朝锡, 于东明   

  1. 浙江曼瑞德舒适系统有限公司聚合物实验室,浙江 温州 325000
  • 收稿日期:2024-10-28 出版日期:2025-10-26 发布日期:2025-10-21
  • 通讯作者: 段凯歌(1987—),女,硕士,研究方向为高分子材料,584654638@qq.com
    E-mail:584654638@qq.com

Preparation and performance of conductive and heat⁃resistant polyethylene pipes

NI Jia, CHEN Zhangcheng, DUAN Kaige(), CHEN Xiaodie, HU Yixuan, MEI Zhenwei, ZHOU Chaoxi, YU Dongming   

  1. Polymer Lab,Zhejiang Menred Comfort System Co,Ltd,Wenzhou 325000,China
  • Received:2024-10-28 Online:2025-10-26 Published:2025-10-21
  • Contact: DUAN Kaige E-mail:584654638@qq.com

摘要:

通过在聚乙烯中添加石墨,经过共混挤出制备一种导热耐热聚乙烯管材。研究了添加不同目数、不同添加量的石墨对管材导热系数的影响,并对管材的静液压性能及力学性能进行了测试。结果表明,当添加的石墨目数为300目、石墨的添加量为12 份(质量份,下同)时管材的导热系数可以达到0.73 W/(m·K)。采用PERT II管测试所用环应力进行静液压性能测试,制备的管材可以通过20 ℃下1 h,95 ℃下22 h、165 h和1 000 h静液压测试。

关键词: 导热管, PERT II管, 导热系数, 石墨, 力学性能

Abstract:

This study developed a thermally conductive and heat⁃resistant polyethylene (PE) pipe through the melt blending and extrusion of PE with graphite. The effect of graphite content on the thermal conductivity was systematically investigated, and the resulting hydrostatic and mechanical properties were evaluated. The results indicated that an optimal loading of 12 phr of 300⁃mesh graphite yielded a composite with a thermal conductivity of 0.73 W/(m·K), significantly enhancing the base polymer's heat transfer. Crucially, the composite pipe retained excellent pressure resistance, successfully passing standard hydrostatic tests at 20 °C for 1 h and at 95 °C for 22 h, 165 h, and 1000 h. This work confirms that graphite is an effective filler for fabricating PE pipes suitable for low⁃to⁃medium⁃temperature heat transfer applications without compromising mechanical integrity.

Key words: heat conduction tube, PERT II tube, thermal conductivity, graphite, mechanical property

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