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以乙醇/水为溶剂体系制备硅气凝胶及其复合材料的研究进展

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  • 吉林建筑大学材料科学与工程学院,长春130118
赵洪凯(1974-),男,博士,教授,硕士研究生导师,主要从事复合材料研究,E-mail:hkzhao003@126.com。

收稿日期: 2020-05-28

  修回日期: 2020-10-21

  网络出版日期: 2021-01-27

基金资助

吉林省发展和改革委员会产业技术研究与开发项目(2020C027-4);吉林省大学生创新创业训练计划项目(8570036506)

Research progress on preparation of silica aerogel and its composite using ethanol/water as solvent system

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  • School of Materials Science and Engineering,Jilin Jianzhu University,Changchun 130118

Received date: 2020-05-28

  Revised date: 2020-10-21

  Online published: 2021-01-27

摘要

以乙醇/水为溶剂体系在常压条件下制备硅气凝胶及其复合材料,取代了传统制备过程中复杂的溶剂替换和表面修饰过程,缩短了制备周期,降低了生产成本。从制备硅气凝胶的硅源出发,综述了在常压条件下以正硅酸乙酯、硅溶胶、水玻璃、甲基三甲/乙氧基硅烷等为单一硅源和复合硅源,以乙醇/水为溶剂制备硅气凝胶及其复合材料的研究进展。以此工艺制备的硅气凝胶及其复合材料具有较低的密度和导热系数,较高的比表面积,力学性能优良。

本文引用格式

赵洪凯, 刘明, 刘一甫 . 以乙醇/水为溶剂体系制备硅气凝胶及其复合材料的研究进展[J]. 化工新型材料, 2021 , 49(1) : 218 -222 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.01.048

Abstract

Ethanol/water is a solvent system for preparing silica aerogel and its composite materials under normal pressure,which replaces the complicated solvent replacement and surface modification processes in the traditional preparation process,shortening the preparation cycle and reducing production costs.Starting from the silica source for the aerogel preparation,under normal pressure conditions,TEOS,silica sol,water glass,MTMS/MTES,etc.Research progress on the preparation of the silica aerogel and its composite materials with single silica source and composite silica source using ethanol/water as solvent.The silica aerogel and its composite materials prepared by this process have lower density and thermal conductivity,higher specific surface area,and excellent mechanical properties.

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