EVALUATION OF INTERNAL STRESS INFLUENCE ON DURABILITY OF POWDER PAINT COATINGS
Научная публикация
EVALUATION OF INTERNAL STRESS INFLUENCE  ON DURABILITY OF POWDER PAINT COATINGS
Автор(ы): N. R. Prokopchuk, T. H. Kukhta
УДК: 678.4.023
Год издания: 2014
Дата загрузки: 03.12.2015
Загрузил(а): Рогова О. А.

Описание:
Method for determination of internal stresses influence on durability of powder paint coatings is developed. The method is based on the difference ofthermal-oxidative degradation activation energy of cross ЕD-linked film-forming material within loose and metal-bedded film. It is shown that powder paint coatings internal stresses are insignificant as metal-bedded cross-linked film-forming material does not take big deformations of coatings in the process of their formation as well as during the usage. Reduction of thermal-oxidative degradation activation energy of the parameter ЕDwith such internal stresses is only 3–7 kJ/mol and it does not reduce the coatings durability much in comparison with the influence of the factor of the climatic chamber of UV radiation and high temperatures.

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ChemistryTechnology of Organic Substances