POS1-1579
Effects of Silane-Based Interfacial Modifiers on the Interfacial and Dielectric Properties of Glass Fiber–Polymer Composites
Topic
S1. Polymer Synthesis
When and Where
Sep 30, 2026
08:30 - 09:30
Room 301 (Grand Ballroom)
Session Chairs
Heesuk KIM
Jinhye BAE
Presenter(s)
Juyoung Shin (sookmyung women's university)
Co-Author(s)
Abstract
In next-generation high-frequency communication systems, advanced insulating composite materials are required to exhibit stable dielectric properties along with robust interfacial reliability. In such materials, the interfacial characteristics between inorganic components and polymer matrices significantly influence polarization behavior and the overall dielectric response. Therefore, controlling the interfacial structure is an effective strategy to enhance the dielectric performance and reliability of high-frequency insulating composites. In this study, the interfacial structure of glass fibers was designed using silane-based materials containing organic functional groups. The resulting interfacial layer was designed to modulate the surface characteristics of the glass fibers and their interactions with the polymer matrix, thereby enhancing interfacial adhesion and improving high-frequency dielectric performance. After surface modification, the water contact angle of the glass fibers increased, whereas the resin contact angle decreased and the resin impregnation rate increased. These results indicate that the hydrophilicity of the glass fiber surface was reduced, while resin wettability and interfacial affinity were enhanced. The interface between the surface-modified glass fibers and the resin matrix exhibited enhanced adhesion, and the resulting composites showed reduced dielectric loss in the high-frequency region. This improvement in dielectric performance is attributed to enhanced resin wettability and impregnation, which likely suppressed the formation of interfacial defects within the composites.
