Thermal Conductivity Characterization of Thermal Grease Containing Copper Nanopowder

Kang, Haneul; Kim, Hyunji; An, Jihye; Choi, Siyeon; Yang, J.; Jeong, Hyomin; Huh, Sun-Chul

doi:10.3390/ma13081893

Cited by 15 publications

(7 citation statements)

References 25 publications

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“…At present, the materials suitable for use as TC filler mainly include metal filler, carbon filler, and ceramic filler [6]. Among them, the metal and carbon filler have excellent TC; for example, Kang et al [7] found that the TC of TSG was the best when graphene was mixed with copper powder, about 7.5 W/(m•K). An et al [8] mixed carbon nanotubes (CNTs) and graphene into TSG, and the highest TC was increased by 19%.…”

Section: Introductionmentioning

confidence: 99%

Free Arc Disperses-Sprays Carbon Nanotubes and Silicon Carbide, Preparing Thermal Silicone Grease

Zhang

Shi

et al. 2023

J. Phys.: Conf. Ser.

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Thermal conductivity grease (TSG) is an important interface material for electronic devices’ heat dissipation. A continuous free-arc dispersion-spraying method of carbon nanotubes (CNTs) and nanocrystalline silicon carbide (SiC) for the preparation of TSG is reported. CNTs and SiC are dispersed and mixed by a free arc and are sprayed on the silicone oil surface (carried by the conveyor belt). Then, the silicon oil is separated from the conveyor belt, and the TSG composite (TSG-E) with highly dispersed CNTs@SiC is prepared. In this work, TSG-E has a CNTs@SiC network with CNTs as the frame and SiC as the node. Compared with untreated (TSG-N), grind (TSG-G), and ultrasonic (TSG-U) dispersion methods, TSG-E has better thermal conductivity (λ) and resistivity. CNTs@SiC network of the TSG-E series affects λ, the effect follows the thermal conductivity network theory and has a sudden change (greatly decreased) from TSG-E0.2 to TSG-E0.3. Besides, the sudden change of thermal stability for the TSG-E series is consistent with the change of λ.

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Section: Introductionmentioning

confidence: 99%

Free Arc Disperses-Sprays Carbon Nanotubes and Silicon Carbide, Preparing Thermal Silicone Grease

Zhang

Shi

et al. 2023

J. Phys.: Conf. Ser.

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“…et al synthesized a new conductive grease with Sb-doped SnO 2 (ATO) as an additive, and ATO can significantly improve the tribological properties of the grease [ 8 ]. Kang, H. et al investigated the composite grease of copper nanopowder and silicone oil and found that the addition of copper nanopowder greatly enhanced the thermal conductivity [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Effective Tuning of the Performance of Conductive Silicon Compound by Few-Layered Graphene Additives

Yang

Tian

et al. 2022

Nanomaterials

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Electric conductive silicon compounds are widely used and essential in electric power, energy and information industries. However, there are still problems such as insufficient stability of physical and chemical properties and weak electrical conductivity. To address the problem of low contact reliability of electrical joints in high-power transmission and distribution equipment, we assessed the influence of mechanically exfoliated graphene (MEG) content on the physicochemical properties of electrical joint compound (EJC). Varying amounts of few-layer MEG prepared with the conventional mechanically exfoliated method was added to the conductive silicon compounds, of which various physicochemical properties, such as penetration, drip point, volume resistivity and frictional properties were systematically assessed and compared with those with copper additive. We found that the addition of MEG effectively enhanced the temperature and mechanical stability of EJC and significantly reduced the material volume resistivity. This work paves the way to improve the key performance of electric conductive silicon compounds with advanced nanomaterials.

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“…Materials 2020, 13, 4763 2 of 14 successfully prepared a ternary TSG containing AlN/Ga-based Liquid Metal/Silicone oil composite materials [8]; Yu et al prepared TSG containing graphene nanosheets and reduced graphene oxide [9]; Kang et al made nano TSG by mixing copper nanopowder with silicone oil, using copper nanopowder a thermally conductive material and silicone oil is as the matrix [10]; Shishkin et al tested the thermal conductivity of zinc oxide-based TSG, and prepared a high-performance TSG based on aluminum nitride as a thermally conductive filler [11]; and Yu et al prepared three kinds of CuO-based TSG with different structures using a special synthesis method [12].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Binary Thermal Silicone Grease and Its Application in Battery Thermal Management

Liu¹,

Huang²,

Cao³

et al. 2020

Materials

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To improve the problems of large interface thermal resistance and low heat dissipation efficiency in battery thermal management (BTM), this paper uses methyl silicone oil as the matrix, AIN, copper powder (CP), and carbon fiber (CF) as thermally conductive fillers, and acetone and stearic acid as particle surface modification components. A variety of binary thermal silicone greases (TSGs) with different compositions were prepared. Different instruments were used to test the material properties of TSGs, and a better TSG was selected to coat the interface between battery and phase change material (PCM) for battery charging and discharging experiments. Through the analysis of experimental data, it was found that among the TSGs made of three mixed fillers (AIN/CP, AIN/CF, CP/CF), the three TSGs had good thermal stability, and their thermal degradation temperature both exceeded 300 °C. As the ratio of thermally conductive filler was gradually changed from 5:1 to 1:5, the TSG containing CP/CF had higher thermal conductivity and lower volume resistivity, while the TSG containing AIN/CF had the least damage due to interface wear. The acidification treatment of thermally conductive filler can improve the adsorption and compatibility of thermally conductive particles and silicone oil, and reduce the oil separation rate of TSGs. The prepared expanded graphite (EG)/paraffin wax (PW) composite phase change material (CPCM) has a relatively large latent heat of phase change, which can effectively control the temperature of the battery, but coating TSG between the battery and the CPCM can further enhance the heat dissipation effect of the battery.

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Thermal Conductivity Characterization of Thermal Grease Containing Copper Nanopowder

Cited by 15 publications

References 25 publications

Free Arc Disperses-Sprays Carbon Nanotubes and Silicon Carbide, Preparing Thermal Silicone Grease

Free Arc Disperses-Sprays Carbon Nanotubes and Silicon Carbide, Preparing Thermal Silicone Grease

Effective Tuning of the Performance of Conductive Silicon Compound by Few-Layered Graphene Additives

Preparation of Binary Thermal Silicone Grease and Its Application in Battery Thermal Management

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