Development of lightweight thermoplastic elastomer (TPE) with thermoexpandable microcapsules (TEMs)
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초록
내용
International environmental regulations are recently being tightened due to environmental problems, so all carmaker makes an effort to achieve engine efficiency enhancement, lightweight, and eco-friendly car in order to satisfy these regulations. Especially, lightweight is emerged on their field because it has related on CO2 reduction technologies. In their researches for lightweight, foaming technology is representative way for the lightweight automotive materials. In this study, we applied TEMs on TPE layer of D/ISO PAD as automotive interior parts to reduce the weight of TPE. These TPE composites with TEMs were extruded as a sheet shape and played an important role to reduce the noise generated from inside and outside of the car. We investigated expansion ratio of TEMs by SEM. Their mechanical and thermal properties were tested by UTM and TGA. And we measured their sound insulation property by Impedance tube.