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超级绝热
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  super thermal insulation
     THE NANOPOROUS SUPER THERMAL INSULATION MATERIAL COMPOUNDED WITH XONOTLITE-SiO_2-AEROGEL
     硬硅钙石—SiO_2复合纳米孔超级绝热材料
短句来源
     Nanoporous Super Thermal Insulation Material Compounded With SiO_2-aerogel
     SiO_2纳米孔超级绝热材料
短句来源
     Inquire into applcation of xonotlite-SiO_2 aerogel compounded nanoporous super thermal insulation material in fire protection of steel structures
     硬硅钙石-SiO_2气凝胶复合纳米孔超级绝热材料在钢结构防火中的应用探讨
短句来源
     A. J. fistly proposed the concept of super thermal insulation material in the international engineering meeting in 1992.Nanopore super thermal insulation material has been Silica aerogel as vector of nanopore in home and abroad so far.
     美国学者Hunt.A.J.等在1992年国际材料工程大会上首先提出了超级绝热材料(Super thermal insulation material)的概念。
短句来源
     Overview on Super Thermal Insulation Materiat of Nanhoce Sio2 Aerogel
     SiO_2纳米孔超级绝热材料
短句来源
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  super insulator
     Nano-porous structures and effective thermal conductivity of aerogel super insulator
     超级绝热材料气凝胶的纳米孔结构与有效导热系数
短句来源
     Based on the open-cell nano-porous structure features, a cubic array of intersecting spheres unit cell model describing the coupled conduction of gas and solid in aerogel super insulator was developed. By one-dimensional heat conduction analysis in the unit cell, the effective thermal conductivity expression was obtained.
     根据气凝胶的纳米孔结构特点,采用由小球体构成的立方阵列单元体结构,建立了描述纳米孔超级绝热材料气凝胶的气固耦合导热模型。
短句来源
  “超级绝热”译为未确定词的双语例句
     SiO_2 aero-gel and its application in the areas of aviation and spaceflight
     超级绝热材料SiO_2气凝胶的制备及应用
短句来源
     Preparation and Modification of Nanoporous Super Thermal Insulator Material:Silica Aerogels
     纳米孔超级绝热材料硅气凝胶制备与改性
短句来源
     Development of Xonotlite-Silica Aerogel Nanoporous Super Insulation Sheets
     硅酸钙复合纳米孔超级绝热板材的研制
短句来源
     The technical data of the dewar are as follows. Outside diameter Φ400mm, total height 2500mm, inside diameter Φ305mm, depth 1800mm, evaporation capacity 7.5L/d.
     该杜瓦外径Φ40 0 ,总高 2 5 0 0 ,内胆Φ 3 0 5 ,深 1 80 0 ; 绝热方式采用多屏多层超级绝热结构 ,液氦日蒸发量 7.5升。
短句来源
     The preparation techniques and application prospect were also introduced in the paper.
     对 SiO2纳米孔超级绝热材料的制备方法及应用前景也进行介绍和分析。
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In this paper, the structure, the technics of the making and the adiabatic estimate are described. The technical data of the dewar are as follows. Outside diameter Φ400mm, total height 2500mm, inside diameter Φ305mm, depth 1800mm, evaporation capacity 7.5L/d.

文中较详细地介绍了超导磁体用金属液氦广口杜瓦的结构、制作工艺、绝热计算。该杜瓦外径Φ40 0 ,总高 2 5 0 0 ,内胆Φ 3 0 5 ,深 1 80 0 ;绝热方式采用多屏多层超级绝热结构 ,液氦日蒸发量 7.5升。

Nano-porous SiO2 aerogel insulations were prepared via two methods: (1) Using tetraethoxysilane (TEOS) as the precursor and followed by ethanol supercritical drying; (2) Surface modification of alcogels prepared from polyethoxydisiloxanes (E40) and followed by drying at ambient pressure. TEM, SEM and pore size distribution techniques were used to characterize the morphology and pore structure of the silica aerogels. The thermal conductivity of the silica aerogels was determined using the transient hot-wire technique....

Nano-porous SiO2 aerogel insulations were prepared via two methods: (1) Using tetraethoxysilane (TEOS) as the precursor and followed by ethanol supercritical drying; (2) Surface modification of alcogels prepared from polyethoxydisiloxanes (E40) and followed by drying at ambient pressure. TEM, SEM and pore size distribution techniques were used to characterize the morphology and pore structure of the silica aerogels. The thermal conductivity of the silica aerogels was determined using the transient hot-wire technique. The results show that the pore size distribution of silica aerogels is from several nanometer to dozens of nanometer, the size of the particles is 5~10 nm and the average pore size (BJH) is about 20 nm and 10 nm respectively for samples derived from the two different methods, while the thermal conductivity of the silica aerogels (100 kg/m3) are 0.0125 and 0.014 W/(m.K) respectively at room temperature and 1.01105 Pa.

以正硅酸四乙酯(TEOS)为硅源,通过溶胶凝胶及超临界干燥过程制备了SiO2气凝胶. 同时,采用相对廉价的多聚硅(E40)为硅源,以三甲基氯硅烷(TMCS)为表面修饰剂,硅油为干燥介质, 在常压条件下制备了同样具有纳米多孔结构的SiO2气凝胶. 用透射电镜、扫描电镜及孔径分布仪对其结构进行了表征,并用动态热线法对其热学特性进行了测试. 结果表明: 两种方法制备的气凝胶均是典型的纳米孔超级绝热材料,后者热导率略高但成本低许多,所以更具应用推广潜力.

The concept of super thermal insulation material originates from early the nineties of the 20th century. Along with study on nanomaterial more and more at home and abroad, the study on nanohole thermal insulation material is unceasingly developing toward pracmatization and engineering. The design principle for nanohole super thermal insulation material is still based on three basic transfer method of heat flow in multihole material, at the same time, the hole dimension to be considered should be less than the...

The concept of super thermal insulation material originates from early the nineties of the 20th century. Along with study on nanomaterial more and more at home and abroad, the study on nanohole thermal insulation material is unceasingly developing toward pracmatization and engineering. The design principle for nanohole super thermal insulation material is still based on three basic transfer method of heat flow in multihole material, at the same time, the hole dimension to be considered should be less than the average free path of air molecule( ≤70 nm). At present, the SiO2 aerogel reinforcement method is commonly used for preparation of nanohole super thermal insulation material. Key words:nano material, thermal insulation material, nanohole, SiO2 aerogel $Gong Zhiguo Wu Chunqiu Hou Jianguo (School of Civil & Architectural Engineering,Wuhan Univ.,Wuhan 430072,China) Abstract According to the probability based limit state design method,the optimum partial coefficients for loads under the comprehensive consideration of three different load effect combination and that under the consideration of each load effect combination,have been calculated,and the method for enhancing the partial coefficient for the loads in the combination of dead loads and wind loads has been produced

超级绝热材料的概念起源于20世纪90年代初期。随着纳米材料的研究在国内外的不断升温 ,纳米孔绝热材料的研究也不断向实用化与工程化发展。纳米孔超级绝热材料的设计原理仍然是依据热流在多孔材料中传播的3种基本方式 ,同时需考虑孔隙尺寸应小于空气分子的平均自由程 (≤70nm)。纳米孔超级绝热材料的制备目前普遍采用将SiO2 气凝胶进行增强的方法

 
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