전자빔 가교에 의한 폴리(에틸렌-co-초산 비닐)/수산화 마그네슘 복합재료의 제조 및 평가
Preparation and Characterization of poly(ethylene-co-vinyl acetate)/ Magnesium Hydroxide Composites by Electron Beam Crosslinking
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초록
In this study, poly(ethylene-co-vinyl acetate)/magnesium hydroxide (EVA/MDH) compositeswere prepared by electron beam crosslinking. EVA as a matrix resin and MDH as a flame retardantwere melt-blended and compression molded to prepare EVA/MDH composites. The prepared EVA/MDH composites were electron beam-irradiated at various absorbed doses of 50~200 kGy. The effects ofelectron beam irradiation on the gel content, tensile strength, elongation-at-break, thermal properties,and flame retardancy of the composites were investigated. The gel content and tensile strengthincreased, while the elongation-at-break decreased with an increase in the absorbed dose due to theformation of crosslinked network structures. In addition, the thermal stability and flame retardancyimproved as the absorbed dose increased. Therefore, the EVA/MDH composites prepared in this studycan be used as an insulation material for flame-retardant and heat-resistant wires and cables.
Abstract
In this study, poly(ethylene-co-vinyl acetate)/magnesium hydroxide (EVA/MDH) compositeswere prepared by electron beam crosslinking. EVA as a matrix resin and MDH as a flame retardantwere melt-blended and compression molded to prepare EVA/MDH composites. The prepared EVA/MDH composites were electron beam-irradiated at various absorbed doses of 50~200 kGy. The effects ofelectron beam irradiation on the gel content, tensile strength, elongation-at-break, thermal properties,and flame retardancy of the composites were investigated. The gel content and tensile strengthincreased, while the elongation-at-break decreased with an increase in the absorbed dose due to theformation of crosslinked network structures. In addition, the thermal stability and flame retardancyimproved as the absorbed dose increased. Therefore, the EVA/MDH composites prepared in this studycan be used as an insulation material for flame-retardant and heat-resistant wires and cables.
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