Preparation and thermal-mechanical properties of physical and chemical dual-reinforced SiO2 aerogels

IF 3.2 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS Journal of Non-crystalline Solids Pub Date : 2025-03-04 DOI:10.1016/j.jnoncrysol.2025.123462

Wang Zhan , Jinhong Mo , Lingling Tang , Fan Shi , Le Chen , Lixia Li , Mingyi Chen , Qinghong Kong , Ru Zhou , Juncheng Jiang

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引用次数: 0

Abstract

Considering that the poor mechanical properties limit the application of SiO₂ aerogels in fire insulation, polyurethane sponges, and mica were used to enhance the mechanical properties of SiO₂ aerogels in this study. The effects of polyurethane sponges with different pore sizes and mica content on the thermal-mechanical properties of composite aerogels were investigated. The internal structure of the composite aerogels was analyzed by scanning electron microscopy. Moreover, the chemical structure and composition of the composite aerogels were characterized and analyzed. The results demonstrate that polyurethane sponges and mica can effectively enhance the mechanical properties of composite aerogels. However, the addition of mica increased the thermal conductivity. The experimental data will further expand the engineering application of SiO₂ aerogels.

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来源期刊

Journal of Non-crystalline Solids 工程技术-材料科学：硅酸盐

CiteScore

6.50

自引率

11.40%

发文量

576

审稿时长

35 days

期刊介绍： The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid. In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.