Ethylene-bridged polysilsesquioxane/hollow silica particle hybrid film for thermal insulation material

Satoru Tsukada, Yuki Nakanishi, Takashi Hamada*, Kenta Okada, Susumu Mineoi, Joji Ohshita

*この研究の対応する著者

研究成果: Article査読

7 被引用数 (Scopus)

抄録

Ethylene-bridged polysilsesquioxane (EBPSQ) was prepared by the sol-gel reaction of bis(triethoxysilyl)ethane. The whitish slurry was prepared by mixing EBPSQ and hollow silica particles (HSPs) with a median diameter of 18-65 μm at 80 °C, and it formed a hybrid film by heating at 80 and 120 °C for 1 h at each temperature, then at 200 °C for 20 min. The surface temperatures of EBPSQ films containing 10 wt% and 20 wt% of HSPs (90.2 °C-90.5 °C) were lower than those of EBPSQ films (93.6 °C), when the films on the duralumin plate were heated at 100 °C for 10 min from the bottom of the duralumin plate. The thermal conductivity/heat flux (k/q) obtained from the temperature difference between the surface temperature and bottom temperature of the films and the film thickness also decreased with adding the HSPs. EBPSQ film without HSPs exhibitedT5dof 258 °C andT10dof 275 °C. However, EBPSQ film containing 20 wt% of HSPs exhibited high thermal stability, andT5dandT10dwere 299 °C and 315 °C, respectively. Interestingly,T5dandT10dof the hybrid films increased with an increase in the number of HSPs. Overall, it was shown that HSPs could improve the thermal insulation properties and thermal stability.

本文言語English
ページ(範囲)24968-24975
ページ数8
ジャーナルRSC Advances
11
40
DOI
出版ステータスPublished - 2021 7月 12
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)

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