A study on the interfacial properties of epoxy composites by plama surface treatment

초록

In this study, composite materials were put to dry interfacial treatment by use of plasma samples at the time of generation of plasma for the best wettability of the samples at the time of generation of plasma were oxygen atmosphere, 0.1 torr of system pressure, 100 W of discharge power, and 3 minutes of discharge time. When preparing the epoxy composite material, UV treatment was applied to specimen made through plasma treatment of glass fiber and control specimen made without such plasma treatment to investigate change of properties. It was found that the chemical change, that took place in the samples irradiated with ultra violet (UV) ray, was collapse of the chains in the hydrocarbon and forming of carboxyl group on the surface, resulting in hydrophilicity in progress. In conclusion, the specimen made through plasma surface treatment showed desirable properties, compared to control without such treatment. Macromolecular material with circular aliphatic structure was found to have excellent deterioration properties against UV treatment, compared to the one with linear structure. UV treatment caused the epoxy composite material to become hydrophilic due to carboxyl radicals generated on its surface and such radicals caused to decrease electrical insulating property of surface and interface