The Experts below are selected from a list of 10314 Experts worldwide ranked by ideXlab platform
Xuetong Zhang - One of the best experts on this subject based on the ideXlab platform.
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nanofibrous kevlar aerogel threads for thermal Insulation in harsh environments
ACS Nano, 2019Co-Authors: Dan Fang, Xuetong ZhangAbstract:Aerogel with low density, high porosity, and large surface area is a promising structure for the next generation of high-performance thermal Insulation fibers and textiles. However, aerogel fibers suffer from weak mechanical properties or complex fabricating processes. Herein, a facile wet-spinning approach for fabricating nanofibrous Kevlar (KNF) aerogel threads (i.e., aerogel fibers) with high thermal Insulation under extreme environments is demonstrated. The aerogel fibers made from nanofibrous Kevlar render a high specific surface area (240 m2/g) and wide-temperature thermal stability. The flexible and strong KNF aerogel fibers are woven into textiles to illustrate the excellent thermal Insulation Property under extreme temperature (−196 or +300 °C) and at room temperature. COMSOL simulation is applied to calculate the thermal conductivity of a single aerogel fiber and find an effective way to improve the thermal Insulation Property of the aerogel fiber. Furthermore, a series of functionalized fibers ...
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Nanofibrous Kevlar Aerogel Threads for Thermal Insulation in Harsh Environments
2019Co-Authors: Zengwei Liu, Dan Fang, Jing Lyu, Xuetong ZhangAbstract:Aerogel with low density, high porosity, and large surface area is a promising structure for the next generation of high-performance thermal Insulation fibers and textiles. However, aerogel fibers suffer from weak mechanical properties or complex fabricating processes. Herein, a facile wet-spinning approach for fabricating nanofibrous Kevlar (KNF) aerogel threads (i.e., aerogel fibers) with high thermal Insulation under extreme environments is demonstrated. The aerogel fibers made from nanofibrous Kevlar render a high specific surface area (240 m2/g) and wide-temperature thermal stability. The flexible and strong KNF aerogel fibers are woven into textiles to illustrate the excellent thermal Insulation Property under extreme temperature (−196 or +300 °C) and at room temperature. COMSOL simulation is applied to calculate the thermal conductivity of a single aerogel fiber and find an effective way to improve the thermal Insulation Property of the aerogel fiber. Furthermore, a series of functionalized fibers or textiles based on KNF aerogel fibers, such as phase-change fibers, conductive fibers, and hydrophobic textiles, have been prepared. Such KNF aerogel fibers represent a promising direction for the next generation of high-performance fibrous thermal-Insulation materials
Yuanqing Li - One of the best experts on this subject based on the ideXlab platform.
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transparent ato epoxy nanocomposite coating with excellent thermal Insulation Property
Micro & Nano Letters, 2012Co-Authors: Guanglei Zhang, Jianlei Wang, Jinhui Yang, Yuanqing LiAbstract:Transparent antimony-doped tin oxide (ATO)/epoxy nanocomposites, as glass thermal Insulation coating, were prepared by incorporating ATO nanoparticles into a transparent epoxy matrix. The effect of ATO content on the optical and thermal Insulation Property of ATO/epoxy coating was studied. The results show that the ATO/epoxy coating with 1 wt ATO has excellent optical properties, that is, visible light transmittance above 50 and shading coefficient of 0.54 are simultaneously achieved. In addition, the large temperature difference between the chambers coated respectively with the ATO/epoxy glass sheet and the common glass sheet indicates that the prepared ATO/epoxy nanocomposite coating has excellent thermal Insulation Property.
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Transparent ATO/epoxy nanocomposite coating with excellent thermal Insulation Property
Micro & Nano Letters, 2012Co-Authors: Guanglei Zhang, Jianlei Wang, Jinhui Yang, Yuanqing LiAbstract:Transparent antimony-doped tin oxide (ATO)/epoxy nanocomposites, as glass thermal Insulation coating, were prepared by incorporating ATO nanoparticles into a transparent epoxy matrix. The effect of ATO content on the optical and thermal Insulation Property of ATO/epoxy coating was studied. The results show that the ATO/epoxy coating with 1 wt ATO has excellent optical properties, that is, visible light transmittance above 50 and shading coefficient of 0.54 are simultaneously achieved. In addition, the large temperature difference between the chambers coated respectively with the ATO/epoxy glass sheet and the common glass sheet indicates that the prepared ATO/epoxy nanocomposite coating has excellent thermal Insulation Property.
Jian Liu - One of the best experts on this subject based on the ideXlab platform.
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unique microstructure and thermal Insulation Property of a novel waste utilized foam ceramic
Journal of Materials Science & Technology, 2020Co-Authors: Fenghua Kuang, Shuize Wang, C Gao, H B Zhang, R K Ren, J L Ren, J Tong, Yongqiang Liu, Jian LiuAbstract:Abstract A characteristic CaO-Al2O3-SiO2 based foam ceramic was prepared by melt-foaming with solid wastes as main raw materials. The similarity to sandwich hole wall microstructure of this novel thermal insulating material was presented and the relationships between this unique microstructure and porosity, density, thermal conductivity and strength were discussed. Comparing the measured and theoretical values with that of the traditional foam ceramic, it can be found that, for the matching of fine skeleton with hole wall, this original sandwich structure can reduce thermal conductivity and increase flexural strength effectively.
Wenbo Han - One of the best experts on this subject based on the ideXlab platform.
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microstructure and thermal Insulation Property of silica composite aerogel
Materials, 2019Co-Authors: Lei Shang, Yang Lyu, Wenbo HanAbstract:Tetraethyl orthosilicate was selected as a matrix of heat insulating materials among three silanes, and an anti-infrared radiation fiber was chosen as a reinforcement for silica aerogel Insulation composite. The silica aerogel was combined well and evenly distributed in the anti-infrared radiation fiber. The heat Insulation effect was improved with the increase in thickness of the aerogel Insulation material, as determined by the self-made aerospace Insulation material Insulation performance test equipment. The 15 mm and 30 mm thick thermal Insulation material heated at 250 °C for 3 h, the temperatures at the cold surface were about 80 °C and 60 °C, respectively, and the temperatures at 150 mm above the cold surface were less than 60 °C and 50 °C, respectively. The silica aerogel composites with various thicknesses showed good thermal Insulation stability. The silica Insulation composite with a thickness of 15 mm exhibited good heat Insulation performance, meets the thermal Insulation requirements of general equipment compartments under low-temperature and long-term environmental conditions. The thermal conductivity of prepared silica aerogel composite was 0.0191 W·m−1·k−1 at room temperature and 0.0489 W·m−1·k−1 at 500 °C.
Gu Qinying - One of the best experts on this subject based on the ideXlab platform.
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thermal Insulation reflection paint for roof and preparation method of thermal Insulation reflection paint
2014Co-Authors: Yang Yuqi, Gu QinyingAbstract:The invention discloses thermal Insulation reflection paint for a roof. The thermal Insulation reflection paint comprises three coatings which are sequentially a primer, a finishing paint and a finish-coat paint from a base material to the periphery. The invention also discloses a preparation method of the thermal Insulation reflection paint. The preparation method comprises the following steps: (1) primer preparation; (2) finishing paint preparation; and (3) finish-coat paint preparation. The paint prepared by the invention has excellent weather resistance and stain resistance and is wide in application range; the thermal Insulation reflection paint can be often cleaned so that the excellent heat Insulation Property is maintained; and the thermal Insulation reflection paint has the thermal Insulation Property and is easy to clean and free of yellowing.