A study on aramid nano-aerogel fiber and its fabric thermal conductivity

Rui Fang; Yue Xie; Bo Zhang; Hao Wang; Min Zhang

doi:10.62051//ijmsts.v1n1.04

Authors

Rui Fang
Yue Xie
Bo Zhang
Hao Wang
Min Zhang

DOI:

https://doi.org/10.62051//ijmsts.v1n1.04

Keywords:

Aramid nano-aerogel fiber, Fabric thermal conductivity, Structural model

Abstract

Aramid nano-aerogel represents an ideal structure for the fabrication of next-generation high-performance thermal insulation fibers and textiles. Single aramid nano-aerogel fiber can be achieved via wet spinning. The thermal conductivity of these fibers, a crucial determinant of textile insulation performance, remains under-explored in terms of numerical modeling. This research aims to establish a numerical inversion model to determine the thermal conductivity of single aramid nano-aerogel fiber. By simulating the three-dimensional geometry of plain fabric, the volume fraction of gas and solid within the fabrics are computed. Drawing from the law of energy conservation and Fourier's law of heat conduction, a relationship model is proposed between the thermal conductivity of single aramid nano-aerogel fiber and the overall thermal conductivity of the fabric. The finite difference method is employed to ascertain the thermal conductivity of single aramid nano-aerogel fiber. Furthermore, the influence of the geometric structure and the fiber diameter on the thermal insulation performance of the single-layer fabric is analyzed, which provides a feasible approach for the subsequent design of fabric structures with excellent thermal insulation properties.

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