Research progress on mechanical properties enhancement of SiO2 aerogels

被引：0

作者：

Zhan W. ^{[1
]}

Shi F. ^{[1
]}

Li L. ^{[1
]}

Chen L. ^{[2
]}

Chen M. ^{[1
]}

Kong Q. ^{[1
]}

Zhang Q. ^{[3
]}

机构：

[1] School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang

[2] School of Electronic Science and Engineering, Nanjing University, Nanjing

[3] College of Safety Science and Engineering, Nanjing Tech University, Nanjing

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2023年 / 40卷 / 09期

基金：

中国国家自然科学基金;

关键词：

aerogel; fiber; fireproof and heat insulation; mechanical properties; nanomaterial; process optimization; SiO[!sub]2[!/sub; strength;

D O I：

10.13801/j.cnki.fhclxb.20230420.001

中图分类号：

学科分类号：

摘要：

With the rapid development of society, latent fire hazards have a great threat to social security. Fire prevention and control can be effectively carried out by using fire insulation materials. Aerogels have the characteristics of low density, low thermal conductivity, high porosity, and exhibit excellent fire insulation properties. SiO2 aerogel is the typical representative of aerogel materials and widely used in many industries. However, SiO2 aerogel still has the bottleneck problem of poor mechanical properties at present, resulting in greatly limits for the engineering application. Therefore, it is necessary to introduce reinforcements to make SiO2 aerogel maintain its own excellent characteristics and enhance its mechanical properties. In this paper, the current research status of reinforced SiO2 materials is briefly described, then the methods of improving mechanical properties by optimizing the process and adding nanomaterials, fibers, compacts in the preparation of silica aerogels are discussed and analyzed. Finally, this paper proposed the future research direction and development suggestions of SiO2 aerogels . © 2023 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.

引用

页码：4958 / 4971

页数：13

共 103 条

[1] DING Y, LIU T, JIANG Y, Et al., Flexible fire-resistant and heat-insulating materials fabricated using sodium titan-ate nanobelts[J], Materials Today Nano, 17, (2022)
[2] JELLE B P., Traditional, state-of-the-art and future thermal building insulation materials and solutions-properties, requirements and possibilities. Energy Build[J], Energy and Buildings, 43, 10, pp. 2549-2563, (2011)
[3] CUCE E, CUCE P M, WOOD C J, Et al., Optimizing insulation thickness and analysing environmental impacts of aerogel-based thermal superinsulation in buildings[J], Energy and Buildings, 77, pp. 28-39, (2014)
[4] LINHARES T, DE AMORIM M T P, DURAES L., Silica aerogel composites with embedded fibres: a review on their preparation, properties and applications[J], Journal of Materials Chemistry A, 7, 40, pp. 22768-22802, (2019)
[5] GANESAMOORTHY R, VADIVEL V K, KUMAR R, Et al., Aerogels for water treatment: A review[J], Journal of Cleaner Production, 329, (2021)
[6] ZHAO S Y, STOJANOVIC A, ANGELICA E, Et al., Phase transfer agents facilitate the production of superinsulating silica aerogel powders by simultaneous hydrophobization and solvent- and ion-exchange[J], Chemical Engineering Journal, 381, (2019)
[7] FIDALGO A, FARINHA J P S, MARTINHO J M G, Et al., Nanohybrid silica/polymer aerogels: The combined influence of polymer nanoparticle size and content[J], Materials & Design, 189, (2020)
[8] SAKKA S., Birth of the sol-gel method: Early history[J], Journal of Sol-Gel Science and Technology, 102, 3, pp. 478-481, (2022)
[9] HUSING N, SCHUBERT U., Aerogele-luftige materialien: Chemie, struktur and eigenschaften[J], Angewandte Chemie, 110, 1-2, pp. 22-47, (1998)
[10] PIERRE A C, PAJONK G M., Chemistry of aerogels and their applications[J], Chemical Reviews, 102, 11, pp. 4243-4266, (2002)

← 1 2 3 4 5 6 7 8 9 10 →