Fabrication of Al2O3 aerogel-SiO2 fiber composite with enhanced thermal insulation and high heat resistance

被引：59

作者：

Wen, Shangyan ^{[1
,2
]}

Ren, Hongbo ^{[2
]}

Zhu, Jiayi ^{[2
]}

Bi, Yutie ^{[2
]}

Zhang, Lin ^{[3
]}

机构：

[1] Southwest Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Sichuan, Peoples R China

[2] Southwest Univ Sci & Technol, Sch Sci, State Key Lab Environm Friendly Energy Mat, Mianyang 621010, Sichuan, Peoples R China

[3] China Acad Engn Phys, Res Ctr Laser Fus, Mianyang 621900, Sichuan, Peoples R China

来源：

JOURNAL OF POROUS MATERIALS | 2019年 / 26卷 / 04期

关键词：

Al2O3 aerogel-SiO2 fiber composite; Inorganic aluminum salt; Thermal insulation; Thermal stability; SILICA AEROGELS; ALUMINA AEROGELS; MESOPOROUS FILM; SURFACE-AREA; LOW-DENSITY; CONDUCTIVITY; ELECTRODEPOSITION; PERFORMANCE; NANOSHEETS; DIAMETER;

D O I：

10.1007/s10934-018-0700-6

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The thermal-resistance Al2O3 aerogels and Al2O3 aerogel-SiO2 fiber composite by using inorganic aluminum salt as the precursor were synthesized by the sol-gel process. The method was straightforward, inexpensive, and safe. Furthermore, it was found that the as-prepared Al2O3 aerogel had high crystal phase transition temperature. As the heat treatment temperature increased to 900 degrees C, the crystal phase transition from gamma-AlOOH to gamma-Al2O3 occurred within the Al2O3 aerogel. Meanwhile, the Al2O3 aerogel-SiO2 fiber composite exhibited high Young's modulus of tensile strength up to 6.59MPa and low thermal conductivity at 35 degrees C (0.028W/(mK)) and high temperature of 600 degrees C (0.033W/(mK)). In addition, the results indicated that the Al2O3 aerogel-SiO2 fiber composite had the moderate hydrophobic property as well as mechanical property.

引用

页码：1027 / 1034

页数：8

共 51 条

[1] Porous sulphur copolymer for gas-phase mercury removal and thermal insulation [J].

Abraham, Akhil Mammoottil ;

Kumar, S. Vijay ;

Alhassan, Saeed M. .

CHEMICAL ENGINEERING JOURNAL, 2018, 332 :1-7

[2] Synthesis of high-surface-area alumina aerogels without the use of alkoxide precursors [J].

Baumann, TF ;

Gash, AE ;

Chinn, SC ;

Sawvel, AM ;

Maxwell, RS ;

Satcher, JH .

CHEMISTRY OF MATERIALS, 2005, 17 (02) :395-401

[3] Fine diameter ceramic fibres [J].

Bunsell, AR ;

Berger, MH .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2000, 20 (13) :2249-2260

[4] Synthesis of high strength monolithic alumina aerogels at ambient pressure [J].

Cao, Fengchao ;

Ren, Lili ;

Li, Xueai .

RSC ADVANCES, 2015, 5 (23) :18025-18028

[5] Disulfide-Bridged Organosilica Frameworks: Designed, Synthesis, Redox-Triggered Biodegradation, and Nanobiomedical Applications [J].

Du, Xin ;

Kleitz, Freddy ;

Li, Xiaoyu ;

Huang, Hongwei ;

Zhang, Xueji ;

Qiao, Shi-Zhang .

ADVANCED FUNCTIONAL MATERIALS, 2018, 28 (26)

[6] Mesoporous silica nanoparticles with organo-bridged silsesquioxane framework as innovative platforms for bioimaging and therapeutic agent delivery [J].

Du, Xin ;

Li, Xiaoyu ;

Xiong, Lin ;

Zhang, Xueji ;

Kleitz, Freddy ;

Qiao, Shi Zhang .

BIOMATERIALS, 2016, 91 :90-127

[7] Oxygen plasma treated graphene aerogel as a solar absorber for rapid and efficient solar steam generation [J].

Fu, Yang ;

Wang, Gang ;

Ming, Xin ;

Liu, Xinghang ;

Hou, Baofei ;

Mei, Tao ;

Li, Jinhua ;

Wang, Jianying ;

Wang, Xianbao .

CARBON, 2018, 130 :250-256

[8] Thermal assessment of ambient pressure dried silica aerogel composite boards at laboratory and field scale [J].

Garay Martinez, Roberto ;

Goiti, Eunate ;

Reichenauer, Gudrun ;

Zhao, Shanyu ;

Koebel, Matthias ;

Barrio, Aitor .

ENERGY AND BUILDINGS, 2016, 128 :111-118

[9]

Heng Chen, 2016, Key Engineering Materials, V697, P360, DOI 10.4028/www.scientific.net/KEM.697.360

[10] Aerogel applications [J].

Hrubesh, LW .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1998, 225 (1-3) :335-342

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