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通过液晶排序效应增强低介电性聚二烯的导热性

Rongrui Shi¹, Lin Jia², Jing Sun¹

¹Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China.

Advanced materials (Deerfield Beach, Fla.)

|October 28, 2025

概括

本研究使用液晶 (LC) 排序效应开发具有增强导热性的碳化合物聚合物. 新型LC聚合物 (ST38PB) 显示了更好的导热性,同时保持了微电子的优良介电性质.

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:

碳化合物聚合物在微电子学中非常重要,因为它们的介电常数 (Dk) 和介电损耗 (Df) 很低.
提高这些聚合物的内在导热性仍然是先进应用的重大挑战.
液晶 (LC) 订购提供了一种潜在的途径,以增强聚合物中的热传输.

研究的目的:

开发一种用于提高碳化合物聚合物的导热率的新方法.
研究液晶排序对聚合物的热和介电性质的影响.
探索这些增强聚合物的潜力在微电子应用中,如热管理和介电基板.

主要方法:

设计和合成一个液晶分子 (ST38) 与三甲和烯末端组.
将ST38交叉链接到聚丁中,形成液晶聚合物 (ST38PB).
液晶电路排列的特征,热稳定性,导热率 (λ) 和介电性质 (Dk,Df).

主要成果:

在ST38PB中形成了有序的LC域,由π-π堆叠诱导并通过交叉链接固定.
液晶电路域表现出极好的热稳定性,最高可达260°C.
ST38PB实现了0.62 W m-1 K-1的增强导热系数 (λ),比原始聚乙烯增加了3.4倍.
保持了出色的介电性质 (Dk = 2.40,Df = 3.3 × 10−3 在10 GHz).

结论:

一种新的液晶排序策略有效地提高了碳化合物聚合物的导热性.
ST38PB显示出高导热性和优良介电性能的有希望的平衡.
这种方法为开发先进的导热聚合物提供了可行的途径,用于要求高温的微电子应用.

关键词:

固有的导热率固有的导热率液晶聚合物是一种液晶聚合物.低电压聚合物低电压聚合物.聚乙烯 (Polybutadiene) 是一种聚乙烯.

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