Rapid Thermochromic and Highly Thermally Conductive Nanocomposite Based on Silicone Rubber for Temperature Visualization Thermal Management in Electronic Devices

Junbao Yan; Yuhan Cai; Hanwen Zhang; Mingyue Han; Xueyang Liu; Haojie Chen; Cui Cheng; Tong Lei; Luoxin Wang; Hua Wang; Siwei Xiong

doi:10.1021/acsami.3c17947

Rapid Thermochromic and Highly Thermally Conductive Nanocomposite Based on Silicone Rubber for Temperature Visualization Thermal Management in Electronic Devices

ACS Appl Mater Interfaces. 2024 Feb 14;16(6):7883-7893. doi: 10.1021/acsami.3c17947. Epub 2024 Feb 1.

Authors

Junbao Yan¹, Yuhan Cai¹, Hanwen Zhang², Mingyue Han³, Xueyang Liu¹, Haojie Chen¹, Cui Cheng¹, Tong Lei¹, Luoxin Wang¹, Hua Wang¹, Siwei Xiong¹

Affiliations

¹ College of Materials Science and Engineering, Hubei Provincial Engineering Center of Industrial Fiber Preparation and Application, Wuhan Textile University, Wuhan 430200, Hubei China.
² Department of Mechanical Engineering, Faculty of Engineering, University Malaya, Kuala Lumpur 50603, Malaysia.
³ State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.

PMID: 38299449
DOI: 10.1021/acsami.3c17947

Abstract

Effective heat dissipation and real-time temperature monitoring are crucial for ensuring the long-term stable operation of modern, high-performance electronic products. This study proposes a silicon rubber polydimethylsiloxane (PDMS)-based nanocomposite with a rapid thermal response and high thermal conductivity. This nanocomposite enables both rapid heat dissipation and real-time temperature monitoring for high-performance electronic products. The reported material primarily consists of a thermally conductive layer (Al₂O₃/PDMS composites) and a reversible thermochromic layer (organic thermochromic material, graphene oxide, and PDMS nanocoating; OTM-GO/PDMS). The thermal conductivity of OTM-GO/Al₂O₃/PDMS nanocomposites reached 4.14 W m^-1 K^-1, reflecting an increase of 2200% relative to that of pure PDMS. When the operating temperature reached 35, 45, and 65 °C, the surface of OTM-GO/Al₂O₃/PDMS nanocomposites turned green, yellow, and red, respectively, and the thermal response time was only 30 s. The OTM-GO/Al₂O₃/PDMS nanocomposites also exhibited outstanding repeatability and maintained excellent color stability over 20 repeated applications.

Keywords: reversible thermochromic; silicon rubber; temperature alarm indicator; thermal conductivity; thermal management.