Correlation between climate testing methods and service life prediction for paint systems

• M.T. Chu¹, D.T. Do¹, V.N. Sereda² and V.A. Karpov³

¹ Institute of Tropical Durability, Joint Vietnam-Russia Tropical Science and Technology Research Center, Cau Giay, Hanoi 100000, Vietnam
² Moscow State Technical University of Civil Aviation, 125993 Moscow, Russian Federation
³ Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, 119071, Moscow, Russian Federation

Abstract: Ensuring the durability of paintwork materials (PWM) to the effects of climatic factors is a necessary problem, especially when they are used in tropical conditions. Wherein, tests in atmospheric conditions (field test) are the main method for confirming the durability of PWM. With that, accelerated tests of PWM in many cases allow to accelerate the receipt of preliminary results for making a decision to conduct field tests. The search for reliable correlations between the results of field and accelerated tests of PWM has been the subject of research for decades. The identification of these correlations allows to quickly assess the durability of paint coating systems (PCS) to the effects of climatic factors and predict the degradation of their decorative and protective properties. This article presents the results of field tests for 5 years in the marine tropical atmosphere of Vietnam of three PCS for the protection of metals and the results of accelerated tests of the same systems. A correlation was obtained for the degradation of PCS properties in terms of gloss and color. Predicting the service life of PCS was carried out taking into account the recommendations of GOST 9.401-2018.

Keywords: durability to climatic factors, atmospheric testing, accelerated testing, paint coating systems, tropical climate, correlation, service life prediction

Int. J. Corros. Scale Inhib., 2023, 12, no. 3, 1336-1346
doi: 10.17675/2305-6894-2023-12-3-29

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