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A Study on Properties with Particle Size and Type of Aluninum in Pre-painted Basecoat of Automotive

자동차 선도장용 베이스코트에서 알루미늄 입자 크기와 형태에 따른 물성 연구

  • Lee, Jae Woo (School of Energy.Material.Chemical Engineering, Korea University of Technology and Education) ;
  • Li, Mei-Chun (School of Energy.Material.Chemical Engineering, Korea University of Technology and Education) ;
  • Cho, Ur Ryong (School of Energy.Material.Chemical Engineering, Korea University of Technology and Education)
  • 이재우 (한국기술교육대학교 에너지.신소재.화학공학부) ;
  • 이미춘 (한국기술교육대학교 에너지.신소재.화학공학부) ;
  • 조을룡 (한국기술교육대학교 에너지.신소재.화학공학부)
  • Received : 2014.05.13
  • Accepted : 2014.05.26
  • Published : 2014.06.30

Abstract

The formulation of six basecoats was designed using aluminium pastes for the per-painted system in the automotive. The aluminium pastes contain pancake type metallic pigment, #501, #801, #601 and cornflake type metallic pigment, #750, #770, #790. The relative cure density of the basecoat increased in order of #501, #801, #601, #750, #770, #790. T-bending, impact resistance, and taping adhesion showed increment with increasing cure density. In the appearance( combined factor) test on cornflake type pigment, The basecoat including the smallest particle size pigment, #790 resulted in the best combined factor compared to other two systems(#750, #770).

자동차 선도장용으로 알루미늄 페이스트를 사용하여 6가지 베이스코트용 포뮬레이션이 설계되었다. 알루미늄 페이스트는 pancake 형태의 금속 안료인 #501, #801, #601와 cornflake 형태의 금속 안료인 #750, #770, #790가 사용되었다. 베이스코트의 상대적인 경화 밀도는 #501, #801, #601, #750, #770, #790 순으로 증가하였다. T-bending, 내충격성, 테이핑 부착력은 경화 밀도의 증가에 따라 향상되었다. Cornflake 형태의 안료에 대한 외관(combined factor) 테스트에서 입자가 가장 작은 #790이 다른 두 가지(#750, #770)와 비교하였을 때 가장 좋은 combined factor를 보여 주었다.

Keywords

References

  1. S. M. Noh, J. W. Lee, J. H. Nam, J. M. Park, and H. W. Jung, "Analysis of scratch characteristics of automotive clearcoats containning silane modified blocked isocyanates via carwash and nano-scratch tests", Prog. Org. Coat., 74, 192 (2012). https://doi.org/10.1016/j.porgcoat.2011.12.009
  2. S. M. Noh, J. W. Lee, J. H. Nam, K. H. Byun, J. M. Park, and H. W. Jung, "Dual-curing behavior and scratch characteristics of hydroxyl functionalized urethane methacrylate oligomer for automotive clearcoats", Prog. Org. Coat., 74, 257 (2012). https://doi.org/10.1016/j.porgcoat.2012.01.002
  3. J. I. Moon, Y. H. Lee, and H. J. Kim, "Synthesis and characterization of flexible polyester coatings for automotive pre-coated metal", Prog. Org. Coat., 73, 123 (2012). https://doi.org/10.1016/j.porgcoat.2011.09.009
  4. I. J. Lee, and S. Park, "Rheology and roll coating dynamics of metallic basecoats for automotive pre-coated metal sheet", Prog. Org. Coat., 76, 917 (2013). https://doi.org/10.1016/j.porgcoat.2013.02.012
  5. J. H. Kim, I. J. Lee, S. M. Noh, C. Y. Kang, J. H. Nam, H. W. Jung, and J. M. Park, "Dynamics and instability of a polymeric paint in roll coating process for automotive pre-coating application.", Polymer(Korea), 35, 574 (2011).
  6. R. A. Priemon, "Annual Book of ASTM Standards", American Society for Testing and Materials 19, (1983).
  7. T. Tanaka, "The measurement for physical properties of coated materials by rigid-body pendulum", A&D Co., Ltd., (1982).
  8. J. P. Stropp, U. Wolff, S. Kernaghan, H. Loffler, M. Osterhold, and H. Thomas, "UV curing systems for automotive refinish applications", Prog. Org. Coat., 55, 201 (2006). https://doi.org/10.1016/j.porgcoat.2005.08.013
  9. U. Poth, "Automotive coating formulation", Vicentz Network, (2008).
  10. B. W. Johnson, "Analysis of test methods for UV durability predictions of polymer coatings", Prog. Org. Coat., 27, 95 (1996). https://doi.org/10.1016/0300-9440(94)00525-7
  11. L. G. J. van der Ven, "Durability prediction of p-urethane clearcoats", Prog. Org. Coat., 48, 214 (2003). https://doi.org/10.1016/S0300-9440(03)00106-1
  12. Antia Augustiniak, "Early detection of aluminum corrosion via turn-on fluorescence in smart coatings", Prog. Org. Coat., 71, 406 (2011). https://doi.org/10.1016/j.porgcoat.2011.04.013
  13. A. Kiehl, "Encapsulated aluminum pigments", Prog. Org. Coat., 37, 179 (1999). https://doi.org/10.1016/S0300-9440(99)00075-2
  14. E. Kirchner, "Film shrinkage and flake orientation", Prog. Org. Coat., 65, 333 (2009). https://doi.org/10.1016/j.porgcoat.2009.01.006
  15. A. Arthur, "Traction, coating materials and surface coatings", CRC Press (2007).
  16. J. W. Lee and U. R. Cho, "A study on weatherability with particle size and orientation of aluminum in pre-painted basecoat for automotive", Elast. Compos., 48, 167 (2013). https://doi.org/10.7473/EC.2013.48.2.167