Robust composite aerogel beads with pomegranate-like structure for water-based thermal insulation coating

被引：20

作者：

Gu, Jie ^{[1
,2
,3
]}

Fu, Rui ^{[1
,2
,3
]}

Kang, Shichen ^{[1
]}

Yang, Xin ^{[1
,2
,3
]}

Song, Qiqi ^{[1
,2
,3
]}

Miao, Changqing ^{[1
,2
,3
]}

Ma, Minghao ^{[1
]}

Wang, Yaxiong ^{[1
,2
,3
]}

Sai, Huazheng ^{[1
,2
,3
]}

机构：

[1] Inner Mongolia Univ Sci & Technol, Sch Chem & Chem Engn, Baotou 014010, Inner Mongolia, Peoples R China

[2] Inner Mongolia Univ Sci & Technol, Inner Mongolia Engn Res Ctr Comprehens Utilizat Bi, Baotou 014010, Inner Mongolia, Peoples R China

[3] Inner Mongolia Univ Sci & Technol, Aerogel Funct Nanomat Lab, Baotou 014010, Inner Mongolia, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2022年 / 341卷

基金：

中国国家自然科学基金;

关键词：

Aerogel composite beads; Pomegranate-like structure; Secondary gelation; Mechanical properties; Thermal insulation; Wettability regulation; SILICA AEROGEL; ALCOHOL; CEMENT; PERFORMANCE; LIGHTWEIGHT; STABILITY;

D O I：

10.1016/j.conbuildmat.2022.127722

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Although aerogels have outstanding thermal insulation performance, it is difficult to combine effectively with water-rich cementitious matrix to prepare thermal insulation coating. Herein, the composite aerogel beads (CABs) with pomegranate-like structure were synthesized to solve this problem. When CABs combined with water-rich cementitious materials, the excellent bond strength between them can reach approximately 130 KPa which was much higher than the bond strength (about 18 KPa) between water-rich cementitious materials and native aerogel. Moreover, the obtained coating presented excellent thermal insulation performance, suggesting possibilities of combining CABs and water-rich cementitious materials for thermal insulation applications of modern buildings.

引用

页数：11

共 49 条

[1] Silica aerogel derived from rice husk: an aggregate replacer for lightweight and thermally insulating cement-based composites [J].