改性二氧化硅气凝胶材料的研究进展
Research Progress on Modified Silica Aerogel Materials
王蒙蒙 1隋学叶 1綦开宇 1刘瑞祥 1周长灵 1段晓峰 1唐文哲 1李占峰1
作者信息
- 1. 山东工业陶瓷研究设计院有限公司,淄博 255000
- 折叠
摘要
二氧化硅气凝胶因其轻量化和良好的隔热性能备受航天航空、交通、建筑等领域的关注.但二氧化硅气凝胶较低的固含量及松散的骨架结构使得材料本身的强度较低,成为其在众多领域应用受限的主要因素之一.除此之外,二氧化硅气凝胶长期使用温度限制在600～800℃以下,在更高温度下热辐射传热会对隔热性能产生明显的影响.依据国内外研究现状,分别在力学性能和热学性能两方面综述了二氧化硅气凝胶材料的改性方法及效果,以期为后续制备具有更高强度且隔热性能优异的二氧化硅气凝胶复合材料提供新思路.
Abstract
Silica aerogel has attracted considerable attention in the aerospace,transportation and construction fields because of its light weight and excellent thermal insulation properties. However,the low solid content and loose skeleton structure result in relatively low material strength,which remains a major factor limiting its application in various fields. In addition,the long-term use temperature of silica aerogel is limited to 600～800℃,and thermal radiation heat transfer significantly affects its thermal insulation performance at higher temperatures. Combined with the research status at home and abroad,the modification methods and effects of silica aerogel materials in terms of mechanical properties and thermal properties were reviewed in order to provide a new idea for the subsequent preparation of silica aerogel composites with higher strength and good thermal insulation properties.
关键词
二氧化硅/气凝胶/强度/热辐射/力学性能/热学性能Key words
Silica/Aerogel/Strength/Thermal radiation/Mechanical properties/Thermal properties引用本文复制引用
出版年
2024
NETL
NSTL
万方数据