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Liquid crystal epoxy resins with high intrinsic thermal conductivities and their composites: A mini-review
Materials Today Physics ( IF 11.5 ) Pub Date : 2021-06-08 , DOI: 10.1016/j.mtphys.2021.100456
Kunpeng Ruan , Xiao Zhong , Xuetao Shi , Jinjin Dang , Junwei Gu

Owing to the excellent mechanical properties and thermal stability, outstanding electrical insulation and chemical resistance, as well as easy processing and low cost, epoxy resins are widely used in electronics and electrical fields. However, the intrinsic thermal conductivity coefficients (λ) of the traditional epoxy resins are low, which is far from being able to meet the high thermal conduction/dissipation requirements of high-power electrical equipment or electronic components. By designing and changing the structures of molecules and chain links to obtain special physical structures (such as orientation structure, liquid crystal structure and crystalline structure, etc.), the high intrinsic λ of epoxy resins can be achieved. This paper reviews the classification, preparation methods, research progresses and thermal conduction mechanisms of intrinsically thermally conductive liquid crystal epoxy resins. The research progresses and academic achievements of existing intrinsically thermally conductive liquid crystal epoxy resins and their composites are focused on, and the influencing factors on the intrinsic thermal conductivities of liquid crystal epoxy resins are discussed. Finally, the development trends and prospects of intrinsically thermally conductive liquid crystal epoxy resins and their composites are pointed out.



中文翻译:

具有高固有热导率的液晶环氧树脂及其复合材料:小型综述

环氧树脂由于具有优异的机械性能和热稳定性、优异的电绝缘性和耐化学性以及易加工和低成本等优点,被广泛应用于电子和电气领域。然而,传统环氧树脂的固有导热系数(λ)较低,远不能满足大功率电气设备或电子元件的高导热/散热要求。通过设计和改变分子和链节的结构来获得特殊的物理结构(如取向结构、液晶结构和晶体结构),高本征λ环氧树脂可以达到。本文综述了本征导热液晶环氧树脂的分类、制备方法、研究进展及导热机理。重点介绍了现有本征导热液晶环氧树脂及其复合材料的研究进展和学术成果,探讨了影响液晶环氧树脂本征导热系数的因素。最后,指出了本征导热液晶环氧树脂及其复合材料的发展趋势和前景。

更新日期:2021-06-13
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