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开发轻,强,耐水的PVA复合材料气凝

Amir Abdolazizi^1,2, Ishara Wijesinghe^1,2, Ifra Marriam^1,2

¹School of Mechanical, Medical and Process Engineering, Queensland University of Technology (QUT), Brisbane, QLD 4000, Australia.

Nanomaterials (Basel, Switzerland)

|May 10, 2024

概括

研究人员开发了氧化石墨烯修饰的聚乙烯醇气凝,显著提高了机械强度,隔热和耐火性. 这些先进的气凝为各种应用提供了更高的性能.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
聚合物科学聚合物科学

背景情况:

有机和无机气凝通常具有不良的机械性能,限制了它们的实际应用.
聚合物气凝虽然柔性,但通常具有低弹性模量.
提高气凝的机械和功能性能对于更广泛的采用至关重要.

研究的目的:

开发一种用氧化石墨烯 (GO) 纳米片修改的新型聚 (乙烯醇) (PVA) 气凝.
显著提高PVA气凝的机械强度,隔热和耐火性.
为了探索这些纳米复合材料气凝对于苛刻应用的潜力.

主要方法:

制造PVA气凝,其中包含2D石墨烯氧化物 (GO) 纳米片的负载极低 (<1 wt%).
使用了一种简单且环保的合成方法.
用1H,1H,2H,2H-Perfluorodecyltriethoxysilane进行表面修饰,以赋予耐水性.

主要成果:

与纯PVA气凝相比,压缩模量增加了9倍.
显示储存模块增加了170%,只添加0.6%的GO.
呈现出优异的热绝缘 (0.035 W/m·K),强烈的耐火性 (50%的燃烧时间更长) 和耐水性.

结论:

石墨烯氧化物纳米板在非常低的度下有效地增强PVA气凝的机械和热性能.
与许多商业绝缘体和泡相比,开发的纳米复合材料气凝提供了卓越的性能.
这项研究为推进聚合物气凝的性能和应用范围提出了一个有前途的战略.

关键词:

不同类型的空气凝绝缘体压缩模块的压缩模块是什么用溶剂辅助的冷成型.超低密度的超低密度的密度

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