Fabrication and application of graphene-based silicone grease

With the increasing power requirements of integrated circuits, the demand for efficient cooling has followed suit. Silicone grease is commonly used due to its thermal stability and ability to fill in airgaps between the electronic components and radiators. Previous works attempted to increase the gr...

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Bibliographic Details
Published in:Materials research express 2023-09, Vol.10 (9), p.95003
Main Authors: Thi Mai, Phuong, Nguyen, Nghia Phan Trong, Nguyen, Tuyen Viet, Minh, Phan Ngoc, Thi Vu, Thu Ha, Thi Au, Hang, Bui, Thang Hung
Format: Article
Language:English
Subjects:
Additives
Ball milling
Boron nitride
Carbon nanotubes
Chemical properties
Electronic components
Graphene
Greases
Heat conductivity
Heat transfer
Integrated circuits
LED
Radiators
silicone grease
Silicones
Thermal conductivity
thermal grease
Thermal stability
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Summary:With the increasing power requirements of integrated circuits, the demand for efficient cooling has followed suit. Silicone grease is commonly used due to its thermal stability and ability to fill in airgaps between the electronic components and radiators. Previous works attempted to increase the grease’s thermal conductivity by adding various additives such as boron nitride or functionalized carbon nanotubes. Functionalized graphene was chosen in this study due to its exceptional physical and chemical properties. Results show that the functionalization with several acid mixtures combined with ball milling resulted in a compound chemically equivalent to graphene and thoroughly dispersed in silicone grease. An optimal grease was produced, containing 1 wt% Gr-COOH and possessing a thermal conductivity of 6.534 W mK −1 . The resulting grease’s performance in thermal dissipation and approximated lifespan improvements was compared to a commercially available silicone grease using a 200 W LED. Results indicated a 4.5 °C decrease in saturation temperature of LED chip along with a 257% increase in thermal conductivity.
ISSN:2053-1591
2053-1591
DOI:10.1088/2053-1591/acee4a