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A Study on Weatherability with Particle Size and Orientation of Aluminum in Pre-painted Basecoat for Automotive

자동차용 선도장 베이스코트에서 알루미늄 입자 크기와 배향에 따른 내후성 연구

  • Lee, Jae Woo (School of Energy.Materials.Chemical Engineering, Korea University of Technology and Education) ;
  • Cho, Ur Ryong (School of Energy.Materials.Chemical Engineering, Korea University of Technology and Education)
  • 이재우 (한국기술교육대학교 에너지.신소재.화학공학부) ;
  • 조을룡 (한국기술교육대학교 에너지.신소재.화학공학부)
  • Received : 2013.04.25
  • Accepted : 2013.05.08
  • Published : 2013.06.30

Abstract

Weatherability was examined according to aluminum particle size and its orientation used in PCM(Paint Coated Metal). Substrate delamination was checked by different UV transmission rate with QUV$^{(R)}$ (Q-LAB) equipment that can make accelerated UV irradiation. Film was prepared using three different types of conflake aluminum pastes under a PCM coating process and clearcoat was sprayed. UV transmission test results showed low transmission rate when EKART #790 having the smallest particle size and horizontal orientation was used. From the gloss retention results, gloss retention was highest in EKART #790 and followed by #770, #750.

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