Abstract Thiol-epoxy elastomers were firstly prepared by thiol-epoxide nucleophilic ring-opening reaction, and the micron boron nitride (mBN) fillers were then introduced into the above system via in-situ polymerization, finally to prepare the highly thermally conductive, self-healing and recoverable mBN/thiol-epoxy elastomer composites by hot-pressing method. Results revealed that the thiol-epoxide reaction was highly efficient and stable. The obtained mBN/thiol-epoxy elastomer composite with 60 wt% mBN fillers presented the optimal thermal conductivity (λ of 1.058 W/mK), excellent self-healing effect & efficiency which is achieved via transesterification reaction (Tensile strength after self-healing could maintain at more than 85% compared to that of original composites), wonderful recoverable performance (Tensile strength after post forming could maintain over 70% compared to that of original composites) and good thermal stability (Theat-resistance index, THRI of 149.9 °C). And the improvement in λ value of the mBN/thiol-epoxy elastomer composites was beneficial to the promotion of the self-healing systems relying on thermal response.

中文翻译：

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通过原位聚合加入 BN 填料，自修复、可回收的环氧弹性体及其复合材料具有理想的热导率

摘要 硫醇-环氧弹性体首先通过硫醇-环氧化物亲核开环反应制备，然后通过原位聚合将微米级氮化硼（mBN）填料引入上述体系，最终制备出高导热、自通过热压方法修复和可恢复的 mBN/硫醇-环氧弹性体复合材料。结果表明硫醇-环氧化物反应高效且稳定。所获得的 mBN/硫醇-环氧弹性体复合材料与 60 wt% mBN 填料呈现出最佳的热导率（λ 为 1.058 W/mK）、优异的自愈效果和通过酯交换反应实现的效率（自愈后的拉伸强度可与原始复合材料相比保持在 85% 以上），出色的可恢复性能（与原始复合材料相比，后成型后的拉伸强度可保持在 70% 以上）和良好的热稳定性（耐热指数，THRI 为 149.9 °C）。mBN/硫醇-环氧弹性体复合材料λ值的提高有利于促进依赖热响应的自愈系统。