期刊
JOURNAL OF APPLIED PHYSICS
卷 130, 期 22, 页码 -出版社
AIP Publishing
DOI: 10.1063/5.0068459
关键词
-
资金
- National Natural Science Foundation of China (NNSFC) [51603148]
- Science and Technology Plans of Tianjin [20JCQNJC00250, 20YDTPJC01380]
Fractal geometry theory was used to simulate the pore structure of ANFAs, and the equivalent resistance method was applied to calculate thermal conductivity. The calculated results closely matched experimental data, demonstrating the effectiveness and reliability of the prediction model.
Aramid nanofiber aerogels (ANFAs) have been considered as ideal thermal insulation materials due to their low bulk density, hierarchical porous structure, high thermal insulation, and thermal stability. Thermal conductivity of ANFAs is highly determined by their complicated porous structure. Fractal geometry theory can effectively simulate pore size distribution, but it is rarely used in the study of the thermal conductivity of aerogels. In this work, the Sierpinski carpet model and two modified Sierpinski carpet models were established to study the pore size distribution of ANFAs, and then the equivalent resistance method was used to transform the models into series and parallel fractal resistance networks, which were applied for the calculation of the effective thermal conductivity of ANFAs. Results show that the calculated results are closer to the experimental data, with a minimum error of 0.78%, indicating the thermal conductivity prediction model is effective and reliable. Published under an exclusive license by AIP Publishing.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据