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Glass Bubble을 이용한 인스트루먼트 패널 코어용 경량화 소재 개발
가석순(Suksun Ka),배우종(Youjong Bae),장석대(Sugdae Chang),송한석(Hanseok Song),박대순(Daesoon Park) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Glass bubbles are advanced low density additives widely used in a variety of industrial applications, and these microscopic spheres of soda-lime borosilicate glass are water insoluble, chemically stable and offer high strength-to-weight ratio. Due to these low density compared with other inorganic fillers, the weight reduction of the injection molded parts could be achieved. These materials are recently widely used for the automotive interior & exterior parts to reduce not only the part weight, but also the cycle time and the molding temperature, etc. In addition, the spherical shape (aspect ratio of 1.0) often improves the dimension stability of the polymer composite, resulting in less shrinkage and warpage. This paper describes that the development of light weight material for Instrument Panel Core through the polymer composite between Polypropylene and Glass Bubbles.
자동차용 천연섬유 복합재료 개발 동향과 LFP 경량화 소재 개발
가석순(Suksun Ka),문경호(Kyungho Moon),장철준(Chuljoon Jang) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
The automotive industry is in the driving seat of ‘green ‘composites because it is here that the needs is greatest. A logical starting point is to take recyclable thermoplastic resigns, and combine them with biodegradable plant-based fibers. Natural fibers have the potential to reduce vehicle weight up to 40% compared with glass fiber, which accounts for the majority of automotive components. Much less energy is used in growing, harvesting, and preparing natural fibers than in producing mineral fibers including glass fiber. This paper describes the characteristics of natural fiber, the trend of automotive parts using natural fiber, and the physical properties including weight reduction through decreasing the density and jute reinforced polypropylene for the instrument panel.
TPU 인써트 사출 공법을 이용한 무도장 하드 타입 판넬 부품 개발
가석순(Suksun Ka),김영준(Youngjun Kim),안성준(Sungjun Ahn),이동우(Dongwoo Lee) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
The automotive interior parts have been produced by the injection molding process. To improve the productivity, light weight, and surface quality improvement, various injection process technologies are developing. In this paper, TPU (Thermoplastic Polyurethane) material, which is usually used for the skin of the instrument panel by powder slush molding, is applied to the surface part of the PAB (Passenger Airbag) door through the injection molding to enhance the soft touch feeling instead of the plastic hard feeling and get the mold-in color interior parts satisfying the same surface quality level of the painted interior parts. The residual thickness of PAB deploy area is chosen through the Finite Element Analysis for the PAB deployment performance. Through comparing the door opening force by the analysis and the test, the physical properties of TPU inputted to the analysis was corrected, and the optimized residual thickness is determined by the 2<SUP>nd</SUP> analysis using the corrected physical properties. Design the 2-layer structure of PAB door based on the analysis results, make the injection mold. The experimental test evaluating the performance of the PAB Door was performed by Hyundai-Kia test specifications.