调节聚烯复合材料的导热性和阻燃性,通过氧化和六角化的分布结构来调节
Qi Wang1, Lin Pan1, Ruitian Bo1
1School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, China.
Polymers
|March 13, 2024
概括
这项研究通过战略性地分配六边形化 (hBN) 和氧化 (MH) 填充剂,提高了聚烯复合材料的性能. 量身定制的填充装置可以改善先进材料应用的热导电性和阻燃性.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 纳米技术 纳米技术
背景情况:
- 聚烯复合材料需要提高导热性和阻燃性,以提高消防安全和热管理.
- 现有的材料在同时满足这些双重需求时面临着挑战.
- 乙烯-乙酸乙烯共聚合物/聚烯酸乙烯弹性体 (EVA/POE) 混合物是功能复合材料的有希望的基础.
研究的目的:
- 为了同时提高EVA/POE混合物的导热性和阻燃性.
- 研究六角性化 (hBN) 和氧化 (MH) 选择性填充剂分布的影响.
- 通过不同的处理方案探索创建共连续网络.
主要方法:
- 在EVA/POE混合物中加入六角化 (hBN) 和氧化 (MH).
- 使用不同的加工方案来实现选择性的填充剂分布.
- 热导电性和阻燃性质的表征.
主要成果:
- 有hBN丰富的中心和MH丰富的边缘的复合材料的导热率为0.70W/m·K,LOI为27.7%.
- 富含 MH 的中心和富含 hBN 的边缘的复合材料显示,高峰热释放率 (pHRR),总热释放率 (THR) 和总烟雾产生率 (TSP) 显著降低.
- hBN和MH的分布结构极大地影响了复合业绩.
结论:
- 选择性填充剂分配是提高聚烯复合材料的热导电性和阻燃性的一个关键策略.
- 在EVA/POE矩阵内优化hBN和MH的排列,可以获得更优质的材料性能.
- 这种方法为开发先进材料提供了一条途径,用于需要热管理和消防安全的苛刻应用.
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