Polyurea.
Polyurea is a monolithic, homogeneous coating that performs a waterproofing and protective function. This material does not react to chemicals, acids, alkalis, oil products. Polyurea can be used for flat roofs, balconies, terraces, pools, artificial reservoirs, and other reservoirs repairing. It can also be used indoors as a finished coating. For this additional decorative effects can be practiced.
There are two types of polyurea that mainly used: hot, applied by specialized high-pressure equipment, and cold polyurea. Сold polyurea is used in case of a small work volume, and in places where the spraying method is impossible or not worth applying.
Due to the high speed of hardening of this material, polyurea can be applied within a wide temperature range (up to -20 ° C in some cases). At the same time, the material is not sensitive to air humidity.
In this case, the moisture content of the substrate can only affect the quality of adhesion. If strong adhesion to the substrate is required, the surface must be thoroughly dried up to about 3-5% of humidity before applying the appropriate primer.
Since polyurea does not contain solvents, it is a fully hardening material (dry residue content is 100%), does not emit harmful substances during exploitation, meets the most strict environmental safety requirements. That is why these systems are applicable in food manufacturing; in the production, purification, and storage of drinking water.
Hot-applied polyurea is spread by specialized high-pressure devices providing separate supply and heating of components. Since the system is highly reactive, the components are mixed at the molecular level in the mixing chamber of the gun. As a result of the application process, a seamless monolithic coating of the required thickness (from 0.4 mm in 1 pass) is formed. Polyurea coatings are very flexible (from 150-600%) and durable (Shore A> 75-90), they have the highest durability exceeding the standards for ceramic tiles. Due to these properties, there is an increase in popularity of these materials.
Polyurea area of application: