Fast healing conductive polymer composite based on carbon black and polyurethane containing disulfide bonds,Journal of Vinyl and Additive Technology

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Fast healing conductive polymer composite based on carbon black and polyurethane containing disulfide bonds
Journal of Vinyl and Additive Technology ( IF 3.8 ) Pub Date : 2021-10-16 , DOI: 10.1002/vnl.21871
Van‐Dung Mai ₁ , Dinh Cung Tien Nguyen ₁ , Van‐Phu Vu ₁ , Soo‐Hyoung Lee ₁

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The electrically conductive healing polymer composites, which have the ability to recover conductivity after damage, are promising candidates as electrodes for electrical devices. In this work, a solvent casting method was used to prepare a healing conductive polymer composite of polyurethane (PU) and carbon black (CB). PU contains dynamic disulfide bonds that can undergo metathesis inducing a fast healing property. The electrical conductivity of the PU/CB composite is recovered by heating at 70°C for 1 min as a result of the synergistic effect of the hydrogen bond and disulfide metathesis. The tensile test shows complete recovery of stress but lower strain after cut and heals at 70°C for 1 h. The fast healing electrical conductivity, excellent mechanical property recovery along with easy preparation offer this PU/CB composite as a prospective candidate for optoelectronic and energy-related devices.

中文翻译：

基于炭黑和含二硫键聚氨酯的快速愈合导电聚合物复合材料

导电愈合聚合物复合材料具有在损坏后恢复导电性的能力，是作为电气设备电极的有希望的候选者。在这项工作中，采用溶剂浇注法制备聚氨酯（PU）和炭黑（CB）的愈合导电聚合物复合材料。PU 含有动态二硫键，可以进行复分解诱导快速愈合特性。由于氢键和二硫键复分解的协同作用，PU/CB 复合材料的电导率在 70°C 加热 1 分钟后恢复。拉伸试验表明，切割后应力完全恢复，但应变较低，在 70°C 下愈合 1 小时。快速愈合的导电性，

更新日期：2021-10-16

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