应用化学2026，Vol.43Issue(8)：1274-1281,8.DOI:10.19894/j.issn.1000-0518.250485
SiO2气凝胶/聚酰亚胺复合材料的制备及建筑隔热性能
Preparation and Building Thermal Insulation Performance of SiO2 Aerogel/Polyimide Composite Materials
摘要
Abstract
By compounding SiO2 aerogel with polyimide polymer to construct a"rigid-flexible"synergistic system,the aim is to enhance the mechanical properties and thermal insulation stability of the material.The influence of the dosage of key components such as Pyromellitic dianhydride(PMDA),3-aminopropyltriethoxysilane(APTES)and ethyl orthosillicate(TEOS)on the thermal insulation performance of composite materials was investigated by combining a thermal constant analyzer and SEM.The results show that when the dosage of PMDA is 1.2 g,the thermal conductivity of the composite material is the lowest and the heat insulation performance is the best within the range of 25~175℃.When the dosage of APTES is 0.5 g,the interface bonding is optimal,effectively reducing the interface thermal resistance.When the dosage of TEOS is 10 g,a uniform and continuous nanoporous network structure(pore size＜50 nm)can be formed,and the polymer phase uniformly coats the aerogel skeleton,achieving an excellent"rigid-flexibility"synergistic effect.Scanning electron microscopy analysis shows that when the dosage of TEOS is 10 g,the composite material has a dense and uniform microstructure,which is conducive to suppressing heat conduction.By optimizing the ratio of PMDA,APTES and TEOS,porous SiO2 aerogel/polyimide composites with low thermal conductivity,good thermal stability and suitable mechanical properties can be prepared.关键词
SiO2气凝胶/聚合物复合材料/隔热性能/建筑节能/刚柔协同/导热系数Key words
SiO2 aerogel/Polymer composite materials/Heat insulation performance/Building energy conservation/Harmony of hardness and softness/Thermal conductivity分类
化学化工引用本文复制引用
王红宇,关国英,肖崇溧,宋昆泽,张长利..SiO2气凝胶/聚酰亚胺复合材料的制备及建筑隔热性能[J].应用化学,2026,43(8):1274-1281,8.基金项目
吉林省科技发展计划项目(No.20250601086RC)资助 Supported by the Science and Technology Development Plan Project of Jilin Province(No.20250601086RC) （No.20250601086RC）
