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Effect of silica surface state on the hygrothermal aging behavior of silicone rubber composites for composite insulators
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DOI:10.1016/j.polymertesting.2026.109274.png)
Abstract
En 中文
• Hygrothermal aging caused coupled mechanical deterioration and insulation reliability loss in silicone rubber. • Silica specific surface area showed a non-monotonic effect on hygrothermal durability, rather than a simple reinforcement trend. • U-260 achieved the best overall durability by balancing interfacial confinement, dispersion uniformity, and moisture sensitivity. • Excessive surface area in U-380 promoted agglomeration- and moisture-active-site-induced weak zones during aging. • HMDS treatment reduced silica surface polarity and moisture affinity, improving aging stability but causing a strength–toughness trade-off.
Keywords:
Silicone rubber
Silica
Hygrothermal aging
Specific surface area
HMDS surface modification
Journal
IF:
6
Papers:
6.4K
Citations:
2.1W
