Anisotropically High Thermal Conductive Natural Rubber/Short-Cut Carbon Fiber Composites Prepared by One-Step for Localized Heat Sources Thermal Management

27 Pages Posted: 9 Jan 2024

See all articles by Jiahao Li

Jiahao Li

affiliation not provided to SSRN

Weichen Zhou

affiliation not provided to SSRN

Chen Ye

affiliation not provided to SSRN

Shuo Cheng

affiliation not provided to SSRN

Cong Deng

affiliation not provided to SSRN

Xueqin Gao

Sichuan University

Abstract

Abstract: The rapid development of next-generation portable electronic devices, including electronic skins, necessitates the use of flexible materials that possess efficient in-plane heat dissipation and superior mechanical properties. Short-cut carbon fibers (SCFs) have emerged as promising fillers due to their high thermal conductivity, strength, and cost-effectiveness. However, achieving a highly oriented structure of SCF inside the matrix, which fully capitalizes on the thermal conductivity of these one-dimensional (1D) fillers, remains a pressing challenge. In this work, we introduce a remarkably simple and integrated approach to fabricate natural rubber/oriented short-cut carbon fiber (NR/O-SCF) composites featuring an anisotropic thermal conductivity network in a single step. This method utilizes unidirectional ice templating to generate ice crystals that guide the orientation of SCFs within the NR matrix. Herein, the ice template approach demonstrates its suitability as an ideal method for preparing fillers with highly oriented structures in "ice template compatible polymers" like polystyrene foam and polyvinyl alcohol gel. The NR/O-SCF composites demonstrate a maximum thermal conductivity of 2.71 W m-1 K-1  on the face, 1706% higher than that of pure NR, thereby enabling superior thermal management capabilities for localized heat sources. Furthermore, these composites retain a substantial proportion of their compression properties in comparison to pure NR. The straightforward and feasible approach proposed in this work offers a pathway to achieve a high degree of filler orientation within the matrix, effectively addressing the challenge of thermal management for localized heat sources in a more cost-effective and efficient manner.

Keywords: Anisotropic thermal conduction network, Short-cut carbon fiber (SCF), In-plane thermal conductivity, Thermal management of localized heat sources, Ice template method

Suggested Citation

Li, Jiahao and Zhou, Weichen and Ye, Chen and Cheng, Shuo and Deng, Cong and Gao, Xueqin, Anisotropically High Thermal Conductive Natural Rubber/Short-Cut Carbon Fiber Composites Prepared by One-Step for Localized Heat Sources Thermal Management. Available at SSRN: https://ssrn.com/abstract=4688779 or http://dx.doi.org/10.2139/ssrn.4688779

Jiahao Li

affiliation not provided to SSRN ( email )

No Address Available

Weichen Zhou

affiliation not provided to SSRN ( email )

No Address Available

Chen Ye

affiliation not provided to SSRN ( email )

No Address Available

Shuo Cheng

affiliation not provided to SSRN ( email )

No Address Available

Cong Deng

affiliation not provided to SSRN ( email )

No Address Available

Xueqin Gao (Contact Author)

Sichuan University ( email )

Do you have a job opening that you would like to promote on SSRN?

Paper statistics

Downloads
6
Abstract Views
60
PlumX Metrics