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通过模具辅助导向化提高聚合物复合材料的导热性

Yongjia Liu¹, Weiheng Gong¹, Xingjian Liu¹

¹Shandong Provincial Key Laboratory of Olefin Catalysis and Polymerization, Key Laboratory of Rubber-Plastics (Ministry of Education), School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.

|April 27, 2024

概括

这项研究通过压缩成型提高了聚合物复合材料的热导率,使用低化 (BN) 填充剂含量. 优化的成型对齐了BN,在不牺牲机械完整性的情况下显著提高了热性能.

科学领域:

材料科学材料科学材料科学
聚合物科学聚合物科学
纳米技术纳米技术

背景情况:

在聚合物复合材料中实现高热导率通常需要高的填充剂含量,使加工复杂化并降低机械性能.
这种限制阻碍了导热聚合物复合材料的实际应用.

研究的目的:

制造聚钢 (PS) /化 (BN) 复合材料,在低填充量 (10% BN) 的情况下具有增强的导热性.
为了研究压缩成型参数对BN填料方向和热性能的影响.

主要方法:

使用压缩成型制造PS/BN复合材料的制造,采用不同的成型周期,温度和压力.
在PS矩阵中分析BN填料方向.
测量导热率和机械性能.

主要成果:

通过在低BN负载下单个成型周期,可以实现热导电量的三倍增强.
随着成型时间和压力增加,BN填充剂的平面内对齐加剧,显著提高了平面内导热率.
在140°C和10MPa的5个成型周期中获得了最高的导热率 (1.6W/m·K),保持了机械性能.

结论:

优化的压缩成型使PS/BN复合材料在低填料含量下显著提高导热性.
该方法促进了BN填充剂的平面内对齐,这对于提高热性能至关重要.
压缩成型为生产高性能聚合物复合材料提供了一种可行的,可扩展的方法.

关键词:

压缩成型压缩成型填充剂的方向填充剂的方向聚合物复合物的聚合物复合物.导热率导热率导热率导热率导热率导热率

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