Novel Al2O3-SiO2 aerogel/porous zirconia composite with ultra-low thermal conductivity

被引：57

作者：

Zhang, Rubing ^{[1
]}

Ye, Changshou ^{[1
]}

Wang, Baolin ^{[2
]}

机构：

[1] Beijing Jiaotong Univ, Sch Civil Engn, Dept Mech, Beijing 100044, Peoples R China

[2] Western Sydney Univ, Inst Infrastruct Engn, Penrith, NSW 2751, Australia

来源：

JOURNAL OF POROUS MATERIALS | 2018年 / 25卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Fibrous ceramics; Aerogel; Thermal properties; Mechanical properties; Thermal insulation; YTTRIA-STABILIZED ZIRCONIA; MECHANICAL-PROPERTIES; POROUS ALUMINA; CERAMICS; MICROSTRUCTURE;

D O I：

10.1007/s10934-017-0430-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Highly porous zirconia fibers networks with a quasi-layered microstructure were successfully fabricated using vacuum squeeze moulding. The effects of inorganic binder content on the microstructure, room-temperature thermal and mechanical properties of fibrous porous zirconia ceramics were systematically investigated. Al2O3-SiO2 aerogel was impregnated into fibrous porous ceramics, and the microstructures, thermal and mechanical properties of Al2O3-SiO2 aerogel/porous zirconia composites were also studied. Results show that the Al2O3-SiO2 aerogel/porous zirconia composites exhibited higher compressive strength (i.e., 1.22 MPa in the z direction) and lower thermal conductivity [i.e., 0.049 W/(m/K)]. This method provides an efficient way to prepare high-temperature thermal insulation materials.

引用

页码：171 / 178

页数：8

共 26 条

[1] 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

[2] Synthesis monolithic copper-based aerogel with polyacrylic acid as template [J].

Bi, Yutie ;

Ren, Hongbo ;

Chen, Bowei ;

Chen, Geng ;

Mei, Yang ;

Zhang, Lin .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2012, 63 (01) :140-145

[3] On a theory of the van der Waals adsorption of gases [J].

Brunauer, S ;

Deming, LS ;

Deming, WE ;

Teller, E .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1940, 62 :1723-1732

[4]

David Kingery W., 1976, INTRO CERAMICS, V17

[5] A novel way to fabricate highly porous fibrous YSZ ceramics with improved thermal and mechanical properties [J].

Dong, Yanhao ;

Wang, Chang-An ;

Zhou, Jun ;

Hong, Zhanglian .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2012, 32 (10) :2213-2218

[6]

Ebert H.-P., 2011, AEROGELS HDB, P537, DOI [DOI 10.1007/978-1-4419-7589-8, 10.1007/978-1-4419-7589-8_23, DOI 10.1007/978-1-4419-7589-8_23]

[7]

FRICKE J, 1990, THERM CONDUCT, V77, P235

[8] Preparation and characterization of highly porous Yb2SiO5 ceramics using water-based freeze-casting [J].

Han, Bingyu ;

Zhang, Rubing ;

Fang, Daining .

JOURNAL OF POROUS MATERIALS, 2016, 23 (02) :563-568

[9] Highly porous ZrO2 ceramics fabricated by a camphene-based freeze-casting route: Microstructure and properties [J].

Han, Jiecai ;

Hong, Changqing ;

Zhang, Xinghong ;

Du, Jiancong ;

Zhang, Wei .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2010, 30 (01) :53-60

[10] Ultra-low thermal conductivity and high strength of aerogels/fibrous ceramic composites [J].

He, Jian ;

Li, Xiaolei ;

Su, Dong ;

Ji, Huiming ;

Wang, XiaoJing .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2016, 36 (06) :1487-1493

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