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ARTIFICIAL AGING COMPARISON BETWEEN HIGH SOLID AND THREE LAYER PAINT SYSTEM

Year 2021, Volume: 7 Issue: 1, 21 - 33, 30.06.2021
https://doi.org/10.34186/klujes.626926

Abstract



Due
to the usage of the conversional high solid topcoat paint cycle and three-layer
paint cycle system on vehicle body high bake aesthetical painting process,
there is so much controversial opinion on last decade about aging performance
of these two-painting system. Generally, vehicle manufacturers prefer three-layer
aesthetical paint cycle on vehicle body. This cycle is formed as respectively
primer layer, coloured basecoat layer and transparent clearcoat layer .



High
solid systems are generally applied by vehicle manufacturers to obtain value
optimization when compared with three-layer paint system. On the other hand, UV
and atmospheric aging resistance is not competitive as three-layer paint system.
This is the main focussing point of manufacturers choice.



In
this study, these two paint systems artificial  aging resistance (SAE J2527-2500 kj)  compared. In order to understand situation in
numeric system, the gloss and colour values were measured.In this comparison,
solid white colour was chosen due to its easiness to obtain for both paint
cycle system and being pure colour.



At
the end of study it was seen  that
until  60 % percent of test, colour  & gloss properties behave not durable and
there are main changings as colour  and
gloss values.




Supporting Institution

Tofaş, Türk Otomobil Fabrikası A.Ş.

References

  • [1] Streitberger N.J., Dossel K.F.,Automotive Paints and Coatings. John Wiley and Sons, Inc. 2005, 2nd edn, 2008..[2] Beck, E., European Coatings Journal, 4, 32, 2006..[3] Sing, L.P., Nadal, M.E., Knight, M.E.,Marx, E., Laurenti, B., Journal of Coatings Technology, 74(932), 55, 2002..[4] Osterhold, M., Wagner, G., Progress in Organic Coatings, 45, 365, 2002[5] ASTM Standart D 7869 :17, Standard Practice for Xenon Arc Exposure Test with Enhanced Light and Water Exposure for Transportation Coatings, Annual Book os ASTM Standarts, Vol. 06.01, American Society for Testing and Materials, Philadelphia, 2017..[6] Billmeyer, F.W. Jr., Saltzmann, M., Principles of Color Technology, 2nd edn, John Wiley & Sons, Ltd, NewYork, 1981...[7] DIN EN ISO 2813: 1999–Paints and Varnishes – Measurement of Specular Gloss of Non-Metallic Paint Films at 20, 60 and 85, International Organization for Standardization, 1999..

ARTIFICIAL AGING COMPARISON BETWEEN HIGH SOLID AND THREE LAYER PAINT SYSTEM

Year 2021, Volume: 7 Issue: 1, 21 - 33, 30.06.2021
https://doi.org/10.34186/klujes.626926

Abstract



Yüksek
fırınlamalı olarak kullanılan yüksek katı oranlı Topcoat ve üç katmanlı döngü
estetik boya uygulama proseslerinin yaşlanma performansları arasında son 10
yılda bir çok karşıt görüş oluşmuştur. Genelde otomobil üreticileri üç katmanlı
boya döngüsünü tercih ederler. Bu uygulama döngüsü sırasıyla, primer katmanı,
bazkat katmanı ve transparant vernik katmanı olarak şekillenir. Yüksek katı
oranlı  sistemler ise üç katmanlı boya
döngüsü ile karşılaştırıldıklarında, genel olarak otomobil üreticileri
tarafından maliyet iyileştirmesi amaçlı uygulanmaktadırlar. Diğer yandan bu
sistemlerin UV ve atmosferik yaşlanma dayanımları üç katmanlı döngü  sistemleri kadar rekabetçi değillerdir. Bu
özellik ise otomobil üreticilerinin seçimlerinin ana odak noktasıdır.



Bu
çalışmada, iki boya uygulama sistemi yaşlandırma dayanımı (SAE J2527-2500 kj)
karşılaştırılmıştır. Karşılaştırmayı numerize etmek için renk ve parlaklık
değerleri ölçülmüştür. Bu karşılaştırmada iki uygulama sistemiyle de elde
edilmesi kolay ve saf bir renk olmasında dolayı bu çalışmada beyaz renk esas
alınmıştır.



Çalışmanın
sonunda ise  % 60 tamamlanma yüzdesine
kadar renk ve parlaklık değerlerinin değerlerin değiştiği ve bu periyotta
stabil kalmadıkları görülmüştür.




References

  • [1] Streitberger N.J., Dossel K.F.,Automotive Paints and Coatings. John Wiley and Sons, Inc. 2005, 2nd edn, 2008..[2] Beck, E., European Coatings Journal, 4, 32, 2006..[3] Sing, L.P., Nadal, M.E., Knight, M.E.,Marx, E., Laurenti, B., Journal of Coatings Technology, 74(932), 55, 2002..[4] Osterhold, M., Wagner, G., Progress in Organic Coatings, 45, 365, 2002[5] ASTM Standart D 7869 :17, Standard Practice for Xenon Arc Exposure Test with Enhanced Light and Water Exposure for Transportation Coatings, Annual Book os ASTM Standarts, Vol. 06.01, American Society for Testing and Materials, Philadelphia, 2017..[6] Billmeyer, F.W. Jr., Saltzmann, M., Principles of Color Technology, 2nd edn, John Wiley & Sons, Ltd, NewYork, 1981...[7] DIN EN ISO 2813: 1999–Paints and Varnishes – Measurement of Specular Gloss of Non-Metallic Paint Films at 20, 60 and 85, International Organization for Standardization, 1999..
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Details

Primary Language English
Subjects Engineering
Journal Section Issue
Authors

Ercüment Şakir Gürel 0000-0003-0724-4860

Armağan Altınışık This is me

Faruk Yılmaz This is me

Publication Date June 30, 2021
Published in Issue Year 2021 Volume: 7 Issue: 1

Cite

APA Gürel, E. Ş., Altınışık, A., & Yılmaz, F. (2021). ARTIFICIAL AGING COMPARISON BETWEEN HIGH SOLID AND THREE LAYER PAINT SYSTEM. Kirklareli University Journal of Engineering and Science, 7(1), 21-33. https://doi.org/10.34186/klujes.626926