Thermal and electrical conductivity improvement in epoxy resin with expanded graphite and silver plating

To improve the thermal and electrical conductivity of diglycidylether of bisphenol-A (DGEBA), expanded graphite (EG) was added to the DGEBA matrix and the EG surface was silver plated. The effect of EG content on the thermal and electrical conductivity, thermal property, flexural properties, impact...

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Bibliographic Details
Published in:The Korean journal of chemical engineering 2022, 39(8), 269, pp.2182-2191
Main Authors: Jin, Fan-Long, Chu, Na, Yao, Shan-Shan, Park, Soo-Jin
Format: Article
Language:English
Subjects:
Biotechnology
Bisphenol A
Catalysis
Chemistry
Chemistry and Materials Science
Composite materials
Electrical resistivity
Electronic
Epoxy resins
Graphite
Heat conductivity
Heat transfer
Impact strength
Industrial Chemistry/Chemical Engineering
Inorganic
Materials (Organic
Materials Science
Oxidation
Photoelectrons
Plating
Silver plating
Thermal conductivity
Thermodynamic properties
Thin Films
화학공학
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Summary:To improve the thermal and electrical conductivity of diglycidylether of bisphenol-A (DGEBA), expanded graphite (EG) was added to the DGEBA matrix and the EG surface was silver plated. The effect of EG content on the thermal and electrical conductivity, thermal property, flexural properties, impact strength, and morphology of the DGEBA/EG composites was investigated. The silver plating on the EG surface was confirmed via high-resolution scanning electron microscopy, energy-dispersive X-ray spectrometry, and X-ray photoelectron spectroscopy. The results indicate that the thermal conductivity of the DGEBA/EG composites containing 60 wt% of EG was 7.35 W/m·K, which was 42 times higher than that of the pristine DGEBA. In addition, the thermal conductivity of the DGEBA/EG composites further increased from 7.35 to 9.49 W/m·K after the EG surface was silver plated. The electrical conductivity of the DGEBA/EG composites increased from 0 to 0.62 S/cm with the addition of 60 wt% of EG and further increased to 0.78 S/cm after silver plating of the EG surface.
ISSN:0256-1115
1975-7220
DOI:10.1007/s11814-022-1065-8