期刊
CERAMICS INTERNATIONAL
卷 47, 期 13, 页码 18662-18668出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2021.03.198
关键词
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资金
- Industrial Technology Innovation Program [20011165]
- Ministry of Trade, Industry & Energy (MOTIE, Korea)
- Korea Evaluation Institute of Industrial Technology (KEIT) [20011165] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this study, surface modification of aluminum oxide with polymer grafting significantly enhanced the thermal conductivity of the composites.
Polymer grafting is a well-known method for surface modification. It improves the interfacial adhesion of the particle with the epoxy. In this study, aluminum oxide (Al2O3) was functionalized with vinyltriethoxysilane (VTES) to graft the carbon double bond for further polymerization. Then, glycidyl methacrylate (GMA) was polymerized to graft poly(glycidyl methacrylate) (PGMA) onto the surface of Al2O3 using the carbon double bond grafted in the previous step. Finally, 4.4'-dia-minodiphenylmethane (DDM) was applied to bridge epoxide groups contained in the PGMA and the matrix. Consequently, the thermal conductivity of the composites increased about 320%.
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