Xutong Yang, Xiao Zhong, Junliang Zhang and Junwei Gu*. Intrinsic high thermal conductive liquid crystal epoxy film simultaneously combining with excellent intrinsic self-healing performance. Journal of Materials Science & Technology, 2021, 68(30): 209-215. 2019IF=6.155.（1区材料科学Top期刊，中国科技期刊卓越行动计划入选项目-重点期刊类项目）(https://doi.org/10.1016/j.jmst.2020.08.027)

Abstract: One kind of side chain liquid crystal epoxy (S-LCE) based on biphenyl mesomorphic unit is synthesized from 2, 2-bis(hydroxymethyl)propionic acid, 4-phenylphenol, and epichlorohydrin. And the intrinsic thermal conductive liquid crystal epoxy film (LCEF) simultaneously combining with intrinsic self-healing performance is then prepared via thiol-epoxide nucleophilic ring-opening reaction and coating method. 1H NMR and FTIR show that S-LCE and LCEF have been successfully prepared. S-LCE presents nematic liquid crystal from room temperature to 160°C. LCEF maintains nematic liquid crystal performance and shows highly intrinsic thermal conductivity & excellent self-healing performance. Thermal conductivity coefficient (λ) values in vertical direction (λ⊥) and parallel direction (λ∥) of LCEF are 0.33 and 1.25 W/mK, respectively, much higher than that of general bisphenol A epoxy resin (E-51, λ⊥ of 0.19 W/mK and λ∥ of 0.65 W/mK). Tensile strength of LCEF is 10.6 MPa, which can maintain at 90.6% and 61.3% after one and four cycles of self-healing behavior, respectively. In addition, LCEF presents a wide service temperature range (-9.8–251°C) and good thermal stability (THRI of 148.5°C). Simultaneously, LCEF has good transparency, flexibility, and tailorability, expected to be utilized in the fields of flexible electronic devices and intelligent structures.以2,2-二羟甲基丙酸、4-苯基苯酚和环氧氯丙烷为主要原料合成了一种基于联苯介晶基元的侧链型液晶环氧（S-LCE），再通过硫醇-环氧亲核开环反应配合涂膜成型工艺制备了一种基于酯交换反应实现自修复功能的本征型高导热液晶环氧膜（LCEF）。核磁共振氢谱（1H NMR）和红外光谱（FTIR）表明S-LCE及LCEF均已成功合成；S-LCE表现为向列相液晶，其液晶区间为常温～160oC；LCEF仍保持向列相液晶性，且表现出优异的本体导热性能和自修复功能；其垂直方向（λ⊥）和平行方向（λ∥）的导热系数分别为0.33 W/mK和1.52 W/mK，远高于通用双酚A环氧树脂（E-51）的λ⊥（0.19 W/mK）和λ∥（0.65 W/mK）；LCEF的拉伸强度为10.6 MPa，经1次和4次修复后的拉伸强度分别保持在90.6 %和61.3%；此外，LCEF表现出较宽的使用温度范围（-9.8～251oC）和较好的热稳定性（耐热指数，THRI为148.5oC）；同时，LCEF还具有较好的透明性、柔韧性和可裁剪性，有望在柔性电子器件和智能结构等领域得到应用。