Synergistic Improvement of Tracking Resistance of Silicone Rubber via Ceramization Promoted by Organic‐Modified Montmorillonite and Platinum‐Aminopropyltriethoxysilane System
ABSTRACT Superior tracking resistance is essential for the long‐term service of silicone rubber insulation material in outdoor applications. A tracking‐resistant silicone rubber was prepared by incorporating a small amount of organic‐modified montmorillonite (OMMT) in the silicone rubber with a platinum‐nitrogen (Pt‐NS) system consisting of Karsted's catalyst (Pt) and aminopropyltriethoxysilane (NS). At contents of 0.5 phr OMMT, 15 ppm Pt, and 2.0 phr NS, the silicone rubber composite achieved a tracking resistance grade of 1A4.5 level with 0.48% eroded mass. Under arc discharge, the Pt‐NS system promoted surface ceramization of silicone rubber, with OMMT lamellae enhancing the density of the ceramic‐like barrier, thereby significantly improving its tracking resistance. This work provides an effective strategy for improving the reliability of high‐voltage insulating silicone rubber.
Authors
- Xuejun Lai (ORCID: https://orcid.org/0000-0002-9714-1242)
- Yanlin Wang (ORCID: https://orcid.org/0000-0002-5660-7704)
- Jianxiang Xiong
- Qingtao Zeng (ORCID: https://orcid.org/0009-0004-6505-2319)
- Hongqiang Li (ORCID: https://orcid.org/0000-0002-1191-2203)
- Hao Wang (ORCID: https://orcid.org/0000-0003-4494-7928)
- Xingrong Zeng (ORCID: https://orcid.org/0009-0000-4342-2877)
Institutions
- South China University of Technology (CN)
- Zhongkai University of Agriculture and Engineering (CN)
Publication Details
- Journal
- Journal of Applied Polymer Science
- Published
- 2025-12-08
- DOI
- https://doi.org/10.1002/app.70156
- Primary Topic
- High voltage insulation and dielectric phenomena
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Basic and Applied Basic Research Foundation of Guangdong Province