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The PSM (powder Slush Molding) which is applied to the PVC in automobile has environmental problems and molding problems. such as disappearance of embo and occurrance of deep drawing. Because of the problems, TPO/TPU is applied to improve the environment in the advanced company. In nation, the materials are on development. In this study, separating of the size of TPO/TPU, and used compatibilizer is enhanced the interface adhesion to improve the molding and durability. It confirms the best molding condition including the data through TPO/TPU Powder analyzer(Thennal analysis, IR, SEM etc). The first step of the study is a selection of the powder size and the second is the mixing with compatibilizer. Finally, the molding is achieved as PSM in the lab. The mixing which is well achieved by raw material and compatibilizer, the molding condition confirms the improved material properties (heat-resistance, light-resistance etc.).<br/> Even though there are still lots of problems to be solved to develop TPO/TPU Powder, it will make the expansion of applications due to the environmental properties of TPO/TPU.
In the field of automobile interior industry, the coloring and lightening of the instrument panel(I/P) has been focused on for the purposed of value added styling and upgrading. In this application, the powder type electroluminescence(EL) system has a great possibility to be applied in the integrated instrument panel. The EL film is composed of the inorganic phosphor and dielectric layer printed on the top of Indium Tin Oxide(ITO) and Silver paste layer. Thus EL film was made of a printed on silk screen method. Thermoplastic olefins(TPO) sheet was developed to satisfy the applied for EL back lighting system. And I/P skin was developed to satisfy the required mechanical properties and reliability. I/P Polyurethane(PU) foaming was developed to satisfy the applied for EL film. The mechanical and processing properties of materials to satisfy the required of I/P assembly at reliability. In this study, automobile interior was developed the first time applied the EL back lighting system for instrument panel.
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.
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.