低热导电性气凝通过复合表面活性剂调节
Jiahang Su1, Chuanying Yao1, Shengjiong Nie1
1School of Chemical Engineering, Changchun University of Technology, Changchun 130012, P. R. China.
Langmuir : the ACS journal of surfaces and colloids
|December 2, 2024
概括
研究人员使用复合表面活性剂开发了具有更好的绝热性能的柔性气凝. 这一创新提高了先进的绝缘应用的热稳定性和阻燃性.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
背景情况:
- 气凝具有出色的灵活性,但与无机对应物相比,其热导率较高.
- 改善隔热,同时保持灵活性对于气凝至关重要.
研究的目的:
- 开发一种简单的策略来制备热绝缘气凝.
- 为了增强柔性气凝的增热特性和热稳定性.
主要方法:
- 使用了一种复合表面活性剂系统,其中含有 cetyltrimethylammonium化物和 cetyltrimethylammonium化物.
- 合成的阴离子/阴离子表面活性剂乳液气凝.
主要成果:
- 达到高透度 (93%) 并保持出色的灵活性.
- 在25°C时表现出显著的电特性,导热率为0.021 W m−1 K−1.
- 具有很高的热稳定性 (在800°C时68.71%的残留物) 和阻燃性 (V-0,LOI 27.30%).
结论:
- 开发的阴离子/阴离子表面活性剂乳液气凝显示出热绝缘应用的巨大潜力.
- 超简单的策略有效地平衡了灵活性与增强的绝热和安全性能.
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