Design of a Ternary Synergistic Network of Hdpe/Bn/Cnt Composites with an Aligned Shish-Kebab Structure for Enhanced Thermal Conductivity and Tensile Strength

36 Pages Posted: 23 May 2023

See all articles by Bin Chen

Bin Chen

affiliation not provided to SSRN

Jiawei Gong

Pennsylvania State University

Wei Huang

affiliation not provided to SSRN

Ying Zhang

Sichuan University

Yijie Ma

Sichuan University

Junjie Li

affiliation not provided to SSRN

Cong Deng

affiliation not provided to SSRN

Ganji Zhong

Sichuan University

Xueqin Gao

affiliation not provided to SSRN

Abstract

Fabricating polymer composites with excellent thermomechanical properties remains a challenge due to the tradeoff between high filler loading and loss of strength. Conventional composites made of randomly oriented lamellae and aggregated fillers fail to construct thermally conductive pathways for filler-filler or filler-crystal contacts. To address this issue, a synergistically ternary network composed of aligned BN and elongated CNT in a shish-kebab structure has been prepared by an in-house Rotation Shear System (RSS). The composite with 20 wt% BN and 5 wt% CNT achieved a high thermal conductivity of 2.37 W/(mK) under shear modification. The tensile strength and Vicat softening temperature of the composite are 2.29 times higher and 21.9 ℃ greater than those of unsheared samples. Such superior thermal and mechanical properties are mainly attributed to the interlocking shish-kebab structure, which serves as a support skeleton in composites, where aligned BN and CNT construct a heat-resistant barrier. This work provides an effective strategy to fabricate high thermally conductive composites with excellent mechanical properties, providing new insights into reducing material replacement frequency under extreme operating conditions.

Keywords: Synergy effect, Shish-Kebab, Heat resistance, Tensile strength, Thermal conductivity

Suggested Citation

Chen, Bin and Gong, Jiawei and Huang, Wei and Zhang, Ying and Ma, Yijie and Li, Junjie and Deng, Cong and Zhong, Ganji and Gao, Xueqin, Design of a Ternary Synergistic Network of Hdpe/Bn/Cnt Composites with an Aligned Shish-Kebab Structure for Enhanced Thermal Conductivity and Tensile Strength. Available at SSRN: https://ssrn.com/abstract=4457579 or http://dx.doi.org/10.2139/ssrn.4457579

Bin Chen

affiliation not provided to SSRN ( email )

No Address Available

Jiawei Gong

Pennsylvania State University ( email )

Wei Huang

affiliation not provided to SSRN ( email )

No Address Available

Ying Zhang

Sichuan University ( email )

Yijie Ma

Sichuan University ( email )

Junjie Li

affiliation not provided to SSRN ( email )

No Address Available

Cong Deng

affiliation not provided to SSRN ( email )

No Address Available

Ganji Zhong

Sichuan University ( email )

Xueqin Gao (Contact Author)

affiliation not provided to SSRN ( email )

No Address Available

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