Article
Nanoscience & Nanotechnology
Zhengli Dou, Bin Zhang, Pengfei Xu, Qiang Fu, Kai Wu
Summary: Efforts to improve the thermal resistance of thixotropic polymer composites for thermal interface materials (TIMs) have been hindered by their mediocre performance in a sandwiched structure. This study proposes a low-bond line thickness (BLT) approach to mitigate the sandwiched thermal impedance, involving the use of liquid metal to localize at specific interface regions. The results show promising improvements in thermal performance compared to existing TIMs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Polymer Science
Huichao Du, Chao Xiao, Miao Jiang, Xusheng He, Yanyan Wang, Xin Ding, Xian Zhang, Xiaofei Li, Kang Zheng, Xianglan Liu, Lin Chen, Meng Xue, Xingyou Tian, Hui Zhang
Summary: A polytetrafluoroethylene (PTFE) based composite film with excellent flexibility and high thermal conductivity was developed through the mechanical interlocking strategy, making it suitable for high-frequency electronic device interface heat dissipation.
Article
Engineering, Manufacturing
Yingchun Liu, Zhaosong Hu, Maoping Lyuc, Haohan Wu, Bowen Liu, Shirong Sun, Xuliang Lin, Xueqin Qiu, Yanlin Qin
Summary: This study demonstrates the use of bio-based epoxy, phosphorus-nitrogen curing agents, graphite flakes, and 4,4 & PRIME;-methylenebis(cyclohexylamine) to reduce the thermal resistance of thermal interface materials (TIM). The interaction between graphite flakes and epoxy resin is optimized using the Diels-Alder reaction, resulting in low interface thermal resistance and improved heat conduction capability. This research provides a facile method for tuning the interfacial thermal conduction of carbon-based thermal management materials.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Materials Science, Composites
Yijie Du, Bin Wu, Ru Xia, Jiasheng Qian
Summary: In this study, a continuous heat transfer framework was established by growing carbon nanotubes in an oriented boron nitride structure to tackle the problem of heat accumulation in electronic devices. The ice-dissolving complexation method was used to couple the orientation construction of boron nitride nanosheets and the surface localization of cobalt ions. Through in-situ conversion of styrene into CNTs, adjacent BNNS were linked through covalent bonding to form a fluent heat transfer pathway. The composite exhibited high through-plane and in-plane thermal conductivity, making it a promising material for thermal management applications.
COMPOSITES COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Zilong Xie, Zhengli Dou, Die Wu, Xiangtong Zeng, Yuan Feng, Yunfei Tian, Qiang Fu, Kai Wu
Summary: Inspired by the bone joint, researchers have developed a polydimethylsiloxane/alumina (PDMS/Al2O3) thermal interface material (TIM) with enhanced rheological mobility and thermal conductivity by incorporating gallium-based liquid metal (LM). The LM reduces the viscosity at the polymer-LM-Al2O3 interface, allowing for high-loading TIMs while maintaining a thixotropic state and reducing contact thermal resistance. Additionally, the merging of LM droplets bridges separate Al2O3 particles, improving interfacial thermal conduction and enhancing thermal conductivity.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Thermodynamics
Jiawei Yang, Wei Yu, Yuan Zhang, Changqing Liu, Huaqing Xie
Summary: The article introduces a novel thermal interface material obtained by incorporating graphene into a polyacrylate-based double cross-linked hydrogel, which exhibits low thermal contact resistance, high thermal conductivity, excellent elasticity, and self-healing properties, meeting the requirements of a dynamic working environment. The study found that under certain pressure, the effect of temperature on thermal contact resistance is minor, indicating the excellent thermal management performance of the composite hydrogel.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Chemistry, Multidisciplinary
Shabas Ahammed Abdul Jaleel, Taehun Kim, Seunghyun Baik
Summary: This study reports on leakage-free healable PCM TIMs with extraordinarily high thermal conductivity and low total thermal resistance. A matrix material called OP was synthesized by functionalizing octadecanol PCM with a polymer through a nucleophilic epoxy ring opening reaction. The introduction of thermally conductive fillers, silver flakes and multiwalled carbon nanotubes decorated with silver nanoparticles, further enhanced the thermal properties of the PCM TIMs. The OP-Ag-nAgMWNT material showed excellent heat dissipation and recycling abilities, making it a promising future TIM for thermal management.
ADVANCED MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Chengpeng Sun, Haifeng Wu, Ruixiang Wang, Meibo Xing, Wentao Tang
Summary: This study proposes an improvement approach to enhance the efficiency of heat pipe evacuated tube solar collectors by filling the gaps in the interface between assembling structures using thermal interface materials. Experimental results show that the average collection efficiency of the solar collector increases by 4.8% compared with the unprocessed one. The startup time of the solar heating system is also shortened by 27.2% through the optimization of the interface.
Article
Thermodynamics
Jianning Zhao, Dong Wei, Yiyang Dong, Dong Zhang, Donghuan Liu
Summary: This paper investigates the thermoelastic coupling response of a cylindrical thermal rectifier and analyzes the effects of initial interface gap, boundary conditions, geometry parameters, and material pairs on the thermal rectification ratio using numerical methods. The results show that the equivalent thermal conductance is the key factor for optimizing the thermal rectification ratio, and adjusting the initial interface gap can switch the status of the interface gap and achieve the maximum thermal rectification ratio.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Nanoscience & Nanotechnology
Yangyiwei Yang, Mozhdeh Fathidoost, Timileyin David Oyedeji, Prasanth Bondi, Xiandong Zhou, Herbert Egger, Bai-Xiang Xu
Summary: In this work, a diffuse-interface model of anisotropic interface thermal conductivity, taking into account interface thermal resistance and conductance, is presented and implemented using the finite element method. Numerical simulations show good agreement with theoretical benchmarks and the feasibility of the model is further demonstrated through homogenization of complex microstructures.
SCRIPTA MATERIALIA
(2022)
Article
Thermodynamics
Xiaojian Wang, Xiaohu Niu, Xiaoxue Wang, Xiaowei Qiu, Liangbi Wang
Summary: The study shows that different shapes of fillers have varying effects on the thermal conductivity of filled composites, and managing filler shape and interface thermal resistance can enhance heat transfer performance.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Review
Chemistry, Physical
Wei Yu, Changhong Liu, Shoushan Fan
Summary: This article discusses the potential of carbon nanotubes (CNTs) in thermal management for electronics, highlighting their high thermal conductivity and other desirable properties. It also covers the progress on thermal conductivity of CNT-reinforced composites, aligned CNT materials, and the use of CNTs in passive heat dissipation methods. The challenges and prospects for future studies on utilizing CNTs in thermal management are also discussed.
Article
Engineering, Environmental
Yingchun Liu, Zhaoson Hu, Haohan Wu, Shiron Sun, Liheng Chen, Kun Wu, Xuliang Lin, Yanlin Qin
Summary: This paper demonstrates a multiscale BN modulation strategy for preparing dense thermal conductive networks (TCN) and simultaneously decreasing the interface thermal resistance (ITR) in polymer composites. The composites show enhanced thermal conductivity (x) and superior dielectric properties and thermal stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Seunghyeon Lee, Ajeong Lee, Seungyeop Baek, Yonmo Sung, Hyomin Jeong
Summary: This study aims to reduce the thermal resistance of MWCNTs-buckypaper as a thermal interface material, with three methods utilized: oxidation, ultrasonication, and the addition of cellulose nanocrystal. The addition of cellulose nanocrystal significantly reduced the thermal resistance of the buckypaper, showing potential for application as a TIM.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Thermodynamics
Xiaojian Wang, Wensheng Kang, Xiaohu Niu, Xiaoxue Wang, Liangbi Wang
Summary: The study found that filler contact has a significant impact on the thermal conductivity of composites, constructal fillers exhibit enhanced heat transfer performance compared to common fillers, showing high thermal conductivity and consistency in different directions.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Physics, Multidisciplinary
Tinggui Chen, Baizhan Xia, Dejie Yu, Chuanxing Bi
Summary: This study proposes a gradient phononic crystal structure for enhanced acoustic sensing. By breaking the symmetry of the PC structure, topologically protected edge states are introduced, resulting in topological acoustic rainbow trapping. The robustness and enhancement properties are verified numerically and experimentally.
