A polyurea coating is made from a polyurea resin and isocyanate element. Most polyurea coatings are polyurea-coated polyurethane or polyurea-rich polyurethane (PRP) which has been applied directly to the surface through pressure injection. The answer, then, is NO.
Polyurea coatings have a unique external shell that is not dissimilar to polyurethane or other types of coatings. It has a honeycomb structure that consists of numerous tiny bubbles which, when applied to an aluminum substrate, causes a remarkable increase in the surface tension between the two. When the excess polymer flows to the exterior of the coating and abrades the existing surface, the bubbles repel and thus the coating becomes nearly impervious to any kind of attack.
A polyurea coating requires a low amount of heat application to attain its maximum effect, which is why it is called “cool coat”. This is because it is a thin, transparent coating that does not absorb or emit heat like other similar products do. In fact, it is a better conductor of heat than most polyurethane varieties, which explains the reason why polyurea coating products resist corrosion at elevated temperatures. It also does not have a significant degree of vapor resistance, which makes it perfect for use in high-tempered environments. Polyurea is known to adhere to any substrate with either a silicone or isocyanate bond. When applied on a metal substrate, the resin blends seamlessly with the existing surface, spreading into a smooth, even coat over a very large area.
There are several advantages to polyurea coating. One of them is its impact resistance, which can withstand both impact and heat. Another advantage is that it has a nearly unlimited life span (which is another advantage). The best polyurea products are formulated with a mixture of surfactants and surfacing compounds in order to provide the best level of bonding to the substrate and improve the polymer’s physical and chemical resistance.
There are many polyurea coatings available in the market. Each particular polymer has its own unique formulation and appearance. The most popular polyurea coating varieties are based on the isocyanate/surfactant bond or the silicone/surfactant blend component.
To ensure that polyurea coatings perform well in their chosen applications, they must be prepared properly. This includes preparation of the coat through chemical means or physical formulators. These two forms are employed in the manufacturing of polyurea products, with the former being more prevalent. The chemical preparation of the coating begins with the selection of the appropriate surfactant. Once this decision is made, the material can be formed at either low or high pressure and then cured at room temperature using standard baking processes.