Double-negative-index ceramic aerogels for thermal superinsulation

被引：635

作者：

Xu, Xiang ^{[1
,2
]}

Zhang, Qiangqiang ^{[3
]}

Hao, Menglong ^{[4
,5
]}

Hu, Yuan ^{[6
,7
]}

Lin, Zhaoyang ^{[1
]}

Peng, Lele ^{[1
]}

Wang, Tao ^{[1
]}

Ren, Xuexin ^{[4
]}

Wang, Chen ^{[8
]}

Zhao, Zipeng ^{[8
]}

Wan, Chengzhang ^{[1
]}

Fei, Huilong ^{[1
]}

Wang, Lei ^{[9
]}

Zhu, Jian ^{[9
]}

Sun, Hongtao ^{[1
,10
]}

Chen, Wenli ^{[2
]}

Du, Tao ^{[2
]}

Deng, Biwei ^{[11
]}

Cheng, Gary J. ^{[11
]}

Shakir, Imran ^{[12
]}

Dames, Chris ^{[4
,13
]}

Fisher, Timothy S. ^{[6
,7
]}

Zhang, Xiang ^{[4
]}

Li, Hui ^{[2
]}

Huang, Yu ^{[8
]}

Duan, Xiangfeng ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA

[2] Harbin Inst Technol, Key Lab Struct Dynam Behav & Control, Minist Educ, Harbin 150090, Heilongjiang, Peoples R China

[3] Lanzhou Univ, Coll Civil Engn & Mech, Key Lab Mech Disaster & Environm Western China, Lanzhou 730000, Gansu, Peoples R China

[4] Univ Calif Berkeley, Dept Mech Engn, Berkeley, CA 94720 USA

[5] Southeast Univ, Key Lab Energy Thermal Convers & Control, Minist Educ, Sch Energy & Environm, Nanjing 210096, Jiangsu, Peoples R China

[6] Univ Calif Los Angeles, Dept Mech & Aerosp Engn, Los Angeles, CA 90095 USA

[7] Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USA

[8] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

[9] Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Coll Chem & Chem Engn, Changsha 410082, Hunan, Peoples R China

[10] New Jersey Inst Technol, Dept Mech & Ind Engn, Newark, NJ 07102 USA

[11] Purdue Univ, Sch Ind Engn, W Lafayette, IN 47907 USA

[12] King Saud Univ, Coll Engn, Sustainable Energy Technol Ctr, Riyadh, Saudi Arabia

[13] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA

来源：

SCIENCE | 2019年 / 363卷 / 6428期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

BORON-NITRIDE; POISSONS RATIO; GRAPHENE; CONDUCTIVITY; ULTRALIGHT; SUPERELASTICITY; DIFFUSIVITY; LIGHTWEIGHT; RESISTANT; EXPANSION;

D O I：

10.1126/science.aav7304

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Ceramic aerogels are attractive for thermal insulation but plagued by poor mechanical stability and degradation under thermal shock. In this study, we designed and synthesized hyperbolic architectured ceramic aerogels with nanolayered double-pane walls with a negative Poisson's ratio (-0.25) and a negative linear thermal expansion coefficient (-1.8 x 10(-6) per degrees C). Our aerogels display robust mechanical and thermal stability and feature ultralow densities down to similar to 0.1 milligram per cubic centimeter, superelasticity up to 95%, and near-zero strength loss after sharp thermal shocks (275 degrees C per second) or intense thermal stress at 1400 degrees C, as well as ultralow thermal conductivity in vacuum [similar to 2.4 milliwatts per meter-kelvin (mW/m.K)] and in air (similar to 20 mW/m.K). This robust material system is ideal for thermal superinsulation under extreme conditions, such as those encountered by spacecraft.

引用

页码：723 / +

页数：64

共 58 条

[1] A new interlayer potential for hexagonal boron nitride [J].

Akiner, Tolga ;

Mason, Jeremy K. ;

Erturk, Hakan .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2016, 28 (38)

[2]

[Anonymous], J MAT RES, DOI DOI 10.1557/JMR.1994.0731

[3] Aerogel insulation for building applications: A state-of-the-art review [J].

Baetens, Ruben ;

Jelle, Bjorn Petter ;

Gustavsen, Arild .

ENERGY AND BUILDINGS, 2011, 43 (04) :761-769

[4]

Bao WZ, 2009, NAT NANOTECHNOL, V4, P562, DOI [10.1038/NNANO.2009.191, 10.1038/nnano.2009.191]

[5] Materials with negative compressibilities in one or more dimensions [J].

Baughman, RH ;

Stafström, S ;

Cui, CX ;

Dantas, SO .

SCIENCE, 1998, 279 (5356) :1522-1524

[6]

Bergman TL., 2011, Introduction to heat transfer, DOI DOI 10.1016/J.APPLTHERMALENG.2011.03.022

[7] Aerogels in Aerospace: An Overview [J].

Bheekhun, Nadiir ;

Abu Talib, Abd Rahim ;

Hassan, Mohd Roshdi .

ADVANCES IN MATERIALS SCIENCE AND ENGINEERING, 2013, 2013

[8] THERMAL-CONDUCTIVITY OF AMORPHOUS SOLIDS ABOVE THE PLATEAU [J].

CAHILL, DG ;

POHL, RO .

PHYSICAL REVIEW B, 1987, 35 (08) :4067-4073

[9] STRATEGIES TO DEFEAT BRITTLENESS [J].

CAHN, RW .

NATURE, 1988, 332 (6160) :112-113

[10] Ceramic materials for thermal barrier coatings [J].

Cao, XQ ;

Vassen, R ;

Stoever, D .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2004, 24 (01) :1-10

← 1 2 3 4 5 6 →