Tetrafunctional vinyl polysilsesquioxane and its covalently cross-linked vinyl liquid silicone rubber for resistance to high temperature oxidation combustion and ablative behavior

Xutao Ma, Jun'an Zhang, Xiaoyan Ma, Zongwu Zhang, Shuai Shen, Jian Wang, Shumeng Wang, Peidong Xu, Shishan Yang, Le Wei

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

A novel lightweight tetrafunctional vinyl polysilsesquioxane (TV-DDSQ) was designed and synthesized as a crosslinking-modifier for vinyl liquid silicone rubber (SR) to form a denser cross-linked network structure and introduce a high-temperature resistant cage structure to obtained TV-DDSQ/SR resistance to high temperature oxidation combustion-ablation resistance composites (TV-DDSQ/SR). Compared to SR, 1 phr TV-DDSQ/SR exhibits good resistance to high temperature oxidation combustion (vertical combustion test to UL-94 V0) and excellent ablation properties (21.2 % reduction in linear ablation). The mechanism of ceramization transition of TV-DDSQ/SR under high temperature oxidation combustion and ablation resistance was investigated.

Original languageEnglish
Article number111315
JournalCorrosion Science
Volume221
DOIs
StatePublished - 15 Aug 2023

Keywords

  • Ablation resistance
  • Ceramic transformation
  • Polyhedral oligomeric silsesquioxane
  • Resistance to high temperature oxidation combustion
  • Vinyl liquid silicone rubber

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