Keyword: «durability»

This paper studies the resistance of polyurea coatings to the action of a hydro-abrasive medium containing 60 wt % silicon carbide with a particle size of 1 3 mm and 40 wt % water. The experiments conformed to STO 52483924 001 2026. The duration of each experiment is 1 hour, the rotation speed of the samples is 400 rpm, and the sample dimensions are 50x50x2 mm. The results showed that polyureas of the type «Extraplan 501» produced by «Huntsman-NMG» have the maximum resistance. Sufficiently high stability indicators are also typical for polyureas produced by AO Khimtrast (joint stock company). The resistance of these materials exceeds the resistance of the previously studied ultra-high molecular weight polyethylene GUR 4150, polyurea Elastocoot 6335/134 and polyurethane EP SKU PT 74.

In article the questions concerning durability, rigidity and mechanical tests of elements of aviation designs are considered