MATEC Web Conf.
Volume 329, 2020International Conference on Modern Trends in Manufacturing Technologies and Equipment: Mechanical Engineering and Materials Science (ICMTMTE 2020)
|Number of page(s)||7|
|Published online||26 November 2020|
Adhesion strength of protective and decorative coatings depending on the porosity of the cement substrate
1 Penza State University of Architecture and Construction, Penza, German Titov str., 28, 440028, Russia
2 Chief Engineer of the South Rifineriers Company, Basra, Ministry of Oil, Irag
* Corresponding author: firstname.lastname@example.org
Information provided about long-term bonding strength protective decorative coatings. A method is proposed for assessing the long- term bonding strength of coatings. The method consists in determining the bonding strength before testing and after t hours of testing. The dependence of the long-term bonding strength on the porosity of the cement substrate has been established. With an increase in the surface porosity of the substrate, observed a decrease in the time of maintaining the adhesive contact “coating-substrate». The aging process of coatings is considered from the position accumulation of damage, taking into account the hereditary factor. The influence of the hereditary factor on the kinetics of damage accumulation was established. It is shown that the dependence of the operating time on the level of damage accumulation can be approximated by an exponential dependence. The values of the activation energy of adhesive destruction of coatings are calculated.
© The Authors, published by EDP Sciences, 2020
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