Epoxy composites (ECs) are used as epoxy molding compound (EMC), which significantly protects the integrated circuits from the humid environment. One of the major limitations with ECs is their phenomena of moisture absorption in humid environments, which drastically reduces their mechanical properties and hinders them from gaining widespread industrial applications. The low cross-linking density of conventional epoxy composites that can lead to intrinsically providing hydrophilic sites and low activation energy in water molecule diffusion. Herein, a dual-networked epoxy composite system as a platform technique by adopting strategically designed poly (methyl methacrylate)-b-(dimethyl aminoethyl methacrylate) (PMD) as polymer compatibilizer to improve the water absorption resistance and mechanical properties derived from good interfacial adhesion and high cross-linking density of epoxy/silica composites were investigated. The as-prepared dual-networked epoxy composite system demonstrates a high-water absorption suppression of about 166.78% and a high tensile modulus of 4.6 GPa, compared to other epoxy composites. In addition, the current strategy has excellent expandability to various fillers also applicable to diverse epoxy composite systems.
Bibliographical noteFunding Information:
H. G. Yoon acknowledges the financial support through a grant from Korea University and was partially supported by the Technology Innovation Program (Project No. 20003956 ) funded by the Ministry of Trade, Industry & Energy (MOTIE, South Korea) . K. Y. Cho acknowledges the financial support from the Pukyong National University Research Fund in 2020 ( CD20200837 ) and the Technology Innovation Program (Project No. 20008653 ) funded by the Ministry of Trade, Industry & Energy (MOTIE, South Korea) .
© 2023 Elsevier Ltd
ASJC Scopus subject areas
- Ceramics and Composites
- Mechanics of Materials
- Mechanical Engineering
- Industrial and Manufacturing Engineering