• 文献标题:   The addition of graphene nanoplatelets into epoxy/polycaprolactone composites for autonomous self-healing activation by Joule's heating effect
  • 文献类型:   Article
  • 作  者:   SANCHEZROMATE XF, SANS A, JIMENEZSUAREZ A, PROLONGO SG
  • 作者关键词:   graphene other2d material, nano composite, electrical propertie, selfhealing
  • 出版物名称:   COMPOSITES SCIENCE TECHNOLOGY
  • ISSN:   0266-3538 EI 1879-1050
  • 通讯作者地址:  
  • 被引频次:   14
  • DOI:   10.1016/j.compscitech.2021.108950 EA JUL 2021
  • 出版年:   2021

▎ 摘  要

Graphene nanoplatelet (GNP) doped epoxy/polycaprolactone (PCL) blends have been proposed in the present work. It has been observed that the addition of GNPs induces an enhancement on the electrical conductivity with a prevalent exponential behavior due to the hopping conduction. In this regard, the presence of small insulating domains of PCL leads to an increase of the electrical conductivity due to the reduction of agglomerates. Furthermore, the addition of GNPs allows the thermal heating by Joule's Effect, leading to an autonomous selfhealing due to the melting of the PCL. In this context, several samples where subjected to Joule's activated healing, leading to healing efficiencies from 40 to 70% under the presence of an artificial crack. Therefore, the proposed novel materials open a way for autonomous self-healable systems.