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基于guar的气凝具有面向的叶片结构和轻质性能,用于阻燃和隔热
Jianbin Sun1, Jing Guo2, Yi Li1
1School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034, China.
International journal of biological macromolecules
|November 24, 2023
概括
使用酸盐和植物酸开发了一种具有面向层状结构的新型 guar 气凝,用于增强绝热和阻燃性.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 纳米技术 纳米技术
背景情况:
- 气凝提供了优良的绝热,但往往缺乏机械强度和阻燃性.
- 开发具有异构性质的功能化气凝对于先进的应用至关重要.
研究的目的:
- 用于制造具有面向片状结构的多功能 guar 气凝.
- 加入酸盐和植物酸,用于隔热和阻燃.
- 为了研究开发的异型气凝的结构性质关系.
主要方法:
- 用冷干燥来创建面向的叶片结构.
- 作为添加剂,使用了酸盐 (Na2O·nSiO2) 和植物酸 (PA).
- 描述包括分析化学结构,形态,热和机械性能.
主要成果:
- 由于组件之间的键,成功形成了一个定向的片状结构.
- 气凝具有低密度 (0.0335 g·cm-3),高孔隙性 (95%) 和特定孔隙体积 (0.8144 cm3·g-1).
- 观察到异构性质,在辐射方向下具有低导热率 (0.0235 W/(m·K)) 在轴向方向上具有高压力 (0.079 MPa).
- 气凝表现出良好的阻燃性,以30.77%的限制性氧指数 (LOI) 表示.
结论:
- 该研究提出了一种创新方法,用于创建具有定制性质的异型气凝.
- 开发的瓜尔气凝显示了建筑能效和阻燃材料应用的巨大潜力.
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