简便构建具有超低热导率和高机械性能的气凝胶/地质聚合物复合材料。

Facile construction of the aerogel/geopolymer composite with ultra-low thermal conductivity and high mechanical performance.

作者信息

Huang Yajun, Gong Lunlun, Pan Yuelei, Li Congcong, Zhou Ting, Cheng Xudong

机构信息

State Key Laboratory of Fire Science, University of Science and Technology of China Hefei Anhui 230027 PR China

出版信息

RSC Adv. 2018 Jan 9;8(5):2350-2356. doi: 10.1039/c7ra12041a.

DOI:10.1039/c7ra12041a

PMID:35541493

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9077434/

Abstract

In this work, we have successfully prepared a lightweight, highly hydrophobic and superb thermal insulating aerogel/geopolymer composite by a sol-gel immersion method. After silica aerogel was impregnated, the composite exhibited nano-porous structures. Moreover, scanning electron microscopy observations revealed that the aerogel particles were tightly anchored on the geopolymer surface. With several excellent properties (bulk density: 306.5 g cm, thermal conductivity: 0.0480 W m K and maximum compressive strength: 0.79 MPa) the as-prepared composite shows great potential to be applied in the thermal insulation field.

摘要

在本工作中，我们通过溶胶 - 凝胶浸渍法成功制备了一种轻质、高疏水性且具有优异隔热性能的气凝胶/地质聚合物复合材料。二氧化硅气凝胶浸渍后，该复合材料呈现出纳米多孔结构。此外，扫描电子显微镜观察表明，气凝胶颗粒紧密地锚定在地质聚合物表面。所制备的复合材料具有多种优异性能（堆积密度：306.5 g/cm³，热导率：0.0480 W/(m·K)，最大抗压强度：0.79 MPa），在隔热领域具有巨大的应用潜力。