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곽성복(Sung Bok Kwak),김재옥(Jae Ok Kim),이동기(Dong Gi Lee),주상률(Sang Ryool Ju),김준형(Joon Hyung Kim),고재송(Jae Song Koh),강보성(Bo Sung Kang),정선경(Sun Kyung Jeoung),유승을(Seung Eul Yoo),남재도(Jae Do Nam) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Recently, the trend of automotive interior parts is focused on improvement of light weight materials. Thermoplastic foams are materials that are composed of a cellular core structure created by the expansion of blowing agents of volatile gases or liquids, which can be economically used in insulating, packaging, and automobile industries. Thermoplastic olefins (TPO) are currently evaluated as a potential replacement of PVC or ABS blends in automotive interior skins such as Door Trim (DT) and Instrument Panel (IP) skins. In this study, micro cellular foaming materials applied automotive instrument panel was investigated.
다층구조 압출 발포 자동차 대형 내장 부품 개발에 관한 연구
곽성복(Sung Bok Kwak),이동기(Dong Gi Lee),주상률(Sang Ryool Ju),조창현(Chang Hyun Cho),김준형(Joon Hyung Kim),고재송(Jae Song Koh),강보성(Bo Sung Kang),정선경(Sung Kyung Jeoung),유승을(Seung Eul Yoo),남재도(Jae Do Nam) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Thermoplastic foams are materials that are composed of a cellular core structure created by the expansion of a blowing agents of volatile gases or liquids, which can be economically used in insulating, packaging, and automobile industries. It due to the optimized properties of stiffness, strength, and energy absorption. Thermoplastic olefins(TPO) are currently evaluated as a potential replacement of PVC or ABS blends in automotive interior skins such as Door Trim(DT) and Instrument Panel(IP) skins. Some of the advantages of TPO over PVC or ABS skins are improved UV and heat aging, reduced fogging due to absence of plasticizer exudation, and recyclability. In this study, the nucleation and volume expansion behaviors of ethylene-octene copolymer were investigated at when different types of PP with different Melting Index(MI) values were incorporated in the foaming process. The effects of polypropylene and its melt flow characteristics on the cell density, final expansion ratio, and foam morphology were examined.