Thermal conductivity and thermal diffusivity of SiO2 nanopowder
文献类型：期刊论文
| 作者 | Zheng, Xinghua1,2; Qiu, Lin1,2; Su, Guoping1,2; Tang, Dawei1; Liao, Yuchao2,3; Chen, Yunfa3
|
| 刊名 | JOURNAL OF NANOPARTICLE RESEARCH
 |
| 出版日期 | 2011-12-01 |
| 卷号 | 13期号:12页码:6887-6893 |
| 关键词 | 3 omega approach SiO2 nanopowder Thermal conductivity Thermal diffusivity Energy transport |
| ISSN号 | 1388-0764 |
| 通讯作者 | Zheng, XH |
| 英文摘要 | A 3 omega approach for the simultaneous determination of the effective thermal conductivity and thermal diffusivity of nanopowder materials was developed. A 3 omega experimental system was established, and the thermal properties of water and alcohol were measured to validate and estimate the accuracy of the current experimental system. The effective thermal conductivity and thermal diffusivity of the SiO2 nanopowder with 375, 475, and 575 nm diameters were measured at 290-490 K and at different densities. At room temperature, the effective thermal conductivity and thermal diffusivity of the SiO2 nanopowder increased with temperature; however, both values decreased as the particle diameter was reduced. An optimum SiO2 powder density that decreased with decreasing diameter was also observed within the measurement range. The minimum effective thermal conductivity and maximum effective thermal diffusivity were obtained at 85 x 10(-3) kg/L, when the particle diameter was 575 nm. The optimum densities of the particles with 375 and 475 nm diameters were less than 50.23 x 10(-3) and 64.82 x 10(-3) kg/L, respectively. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| 研究领域[WOS] | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 关键词[WOS] | 3-OMEGA METHOD ; SILICA AEROGELS ; INSULATION ; FILM |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000298056100063 |
| 公开日期 | 2013-10-28 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/4336]  |
| 专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Xinghua,Qiu, Lin,Su, Guoping,et al. Thermal conductivity and thermal diffusivity of SiO2 nanopowder[J]. JOURNAL OF NANOPARTICLE RESEARCH,2011,13(12):6887-6893. |
| APA | Zheng, Xinghua,Qiu, Lin,Su, Guoping,Tang, Dawei,Liao, Yuchao,&Chen, Yunfa.(2011).Thermal conductivity and thermal diffusivity of SiO2 nanopowder.JOURNAL OF NANOPARTICLE RESEARCH,13(12),6887-6893. |
| MLA | Zheng, Xinghua,et al."Thermal conductivity and thermal diffusivity of SiO2 nanopowder".JOURNAL OF NANOPARTICLE RESEARCH 13.12(2011):6887-6893. |
入库方式： OAI收割
来源：过程工程研究所
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