Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
권호 표지
DOI QR코드

DOI QR Code

Development of Paint-free Metallic Plastic Material for Automotive Parts

자동차 부품용 무도장 메탈릭 플라스틱 소재 개발

  • Choi, Min Jin (Hyundai Motor Group, Exterior & Powertrain System Plastic Materials Development Team) ;
  • Cho, Jeong-Min (Hyundai Motor Group, Exterior & Powertrain System Plastic Materials Development Team) ;
  • Choi, Young Ho (Hyundai Motor Group, Exterior & Powertrain System Plastic Materials Development Team) ;
  • Choi, Min Ho (Hyundai Motor Group, Exterior & Powertrain System Plastic Materials Development Team) ;
  • Lee, Choon Soo (Hyundai Motor Group, Exterior & Powertrain System Plastic Materials Development Team) ;
  • Sung, Han Ki (Hyundai Motor Group, Plastic Mold Manufacturing Engineering Department Team) ;
  • Lee, Kyoung Sil (Hyundai Motor Group, Kia Design Engineering Team) ;
  • Park, Ki Hun (Daewon Chemical Company) ;
  • Hwang, Se Jong (Daewon Chemical Company)
  • 최민진 (현대자동차 외장PT플라스틱재료개발팀) ;
  • 조정민 (현대자동차 외장PT플라스틱재료개발팀) ;
  • 최영호 (현대자동차 외장PT플라스틱재료개발팀) ;
  • 최민호 (현대자동차 외장PT플라스틱재료개발팀) ;
  • 이춘수 (현대자동차 외장PT플라스틱재료개발팀) ;
  • 성한기 (현대자동차 플라스틱금형기술부) ;
  • 이경실 (현대자동차 기아디자인엔지니어링팀) ;
  • 박기훈 (대원케미칼 기술연구소) ;
  • 황세종 (대원케미칼 기술연구소)
  • Received : 2021.09.10
  • Accepted : 2021.10.18
  • Published : 2022.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, paint-free metallic plastic material, polypropylene (PP) and acrylonitrile styrene acrylate (ASA) materials were investigated on the applications for bumper skid plate and outside mirror housing parts. In order to maximize metallic effect, type, size and content of aluminum pigment were optimized based on flop index. Hybrid aluminum pigments with different aspect ratios were used to conceal weld lines. By controlling the fluidity of the material, the flow mark problem, generated on the surface of the part, was resolved. We also investigated the surface defects of flow and weld lines by using the developed modeling and simulation.

본 논문에서는 범퍼 스키드 플레이트 및 아웃사이드미러 하우징 부품에 적용되는 polypropylene (PP)와 acrylonitrile styrene acrylate (ASA) 소재를 활용하여 무도장 메탈릭 소재 구현에 대해 연구하였다. 금속 효과를 극대화하기 위해 알루미늄 입자의 종류, 크기, 함량을 최적화하였고 웰드 라인을 은폐하기 위해 종횡비가 상이한 하이브리드 알루미늄 입자를 사용하였다. 또한 부품 표면에 발생되는 플로우 마크를 개선하기 위해 유동성을 제어하였으며 사출 해석을 수행하였다.

Keywords

References

  1. Santos, O., Pontes, A. J. and Martins, C. I., "Morphological Aspects of Injection-molded Polypropylene with Metallic Pigments," ANTEC, 3, 1944(2013).
  2. Govindaraj, K., Balaji, K., Vimalathithan, M., Samir, G. and Rajesh, L., "Mold in Color Diamond White ASA Material for Automotive Exterior Application," SAE Technical Paper, 28, 2562 (2019).
  3. Park, J. M., Jeong, S. J. and Park, S. J., "Numerical Prediction of Flake Orientation and Surface Color in Injection Molding of Flake-pigmented Thermoplastics," Polymer Composites, 32(8), 1297-1303(2011). https://doi.org/10.1002/pc.21151
  4. Kobayashi, Y., Teramoto, G. and Kanai, T., "The Unique Flow of Polypropylene at the Weld Line Behind an Obstacle in Injection Molding," Polymer Engineering and Science, 51(3), 526-531 (2011). https://doi.org/10.1002/pen.21841
  5. Kim, S. L., Choi, T. G., Cho, H. S., Lyu, M., Lim, J. and Lee, S., "Orientation of Two Dimensional Fillers and Surface Appearance in an Injection Molded Article," Polymer (Korea), 40(6), 871-879 (2016). https://doi.org/10.7317/pk.2016.40.6.871