Synergistic dual effect dynamic network regulation of self-healing silicone rubber composites for outdoor insulation

IF 6.5 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Communications Pub Date : 2025-04-21 DOI:10.1016/j.coco.2025.102418

Pengcheng Xiang , Baoquan Wan , Wenjie Huang , Xing Yang , Xiaoyan Yang , Bing Xia , Yong Chae Jung , Jun-Wei Zha

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Abstract

Silicone rubber (SR) is an important insulating material in electrical and electronic equipment and self-healing SR can heal electrical/mechanical damage to enhance the service life of the material. However, commercial silicone rubbers contain high content inorganic fillers and irreversible permanent cross-linked networks, creating a great challenge for the research of their self-healing ability. Herein, a novel PDMS-based silicone rubber containing disulfide and hydrogen bonds (PSH) is designed by introducing dynamic reversible hydrogen to construct a synergistic dynamic cross-linked network. The interactions and reversible cleavage-recombination between dynamic hydrogen and disulfide bonds endow the PSH elastomers with excellent mechanical and self-healing ability. Therefore, the tensile strength of the optimal PSH8 elastomer reaches 1.82 MPa, which exceeds that of the original SR. Meanwhile, the mechanical and electrical damage self-healing efficacy of PSH8 elastomer can achieve 91 % and 67 %, respectively. It provides a feasible approach for the commercialization of self-healing SR, which is beneficial for the application in advanced electrical equipment.

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来源期刊

Composites Communications Materials Science-Ceramics and Composites

CiteScore

12.10

自引率

10.00%

发文量

340

审稿时长

36 days

期刊介绍： Composites Communications (Compos. Commun.) is a peer-reviewed journal publishing short communications and letters on the latest advances in composites science and technology. With a rapid review and publication process, its goal is to disseminate new knowledge promptly within the composites community. The journal welcomes manuscripts presenting creative concepts and new findings in design, state-of-the-art approaches in processing, synthesis, characterization, and mechanics modeling. In addition to traditional fiber-/particulate-reinforced engineering composites, it encourages submissions on composites with exceptional physical, mechanical, and fracture properties, as well as those with unique functions and significant application potential. This includes biomimetic and bio-inspired composites for biomedical applications, functional nano-composites for thermal management and energy applications, and composites designed for extreme service environments.