The nowadays science and technology pose a number of challenges for a new generation of polymeric substances and materials. Currently, providing polymers with chemical, physical and mechanical properties such as mechanical strength, elasticity, resistance to corrosion, and so on requires the establishment of a new synthetic material with a predetermined set of properties.
An ideal waterproofing for a wide range of destinations
Polyurea, also known as polyurea elastomer is an organic polymer which is formed by the reaction of an isocyanate with an amine of the finished polyester resin-forming composition similar to very hard plastic or rubber. Polyurea is a two component material which is applied to the surface by spraying with special equipment, providing high pressure and mixing of the components.
Polyurea coatings are characterised by a number of high physical and mechanical properties that distinguish them from other film-forming materials (epoxy, polyester, acrylic, rubber, etc.). Here is a breakdown of the main polyurea properties:
- high speed curing (even at temperatures below 0°C, ready to fulfill its role almost immediately after application to the surface)
- lack of sensitivity to moisture
- exceptional physical properties
- high hardness
- tear resistance and tensile strength
- excellent adhesion to various substrates
- chemical resistance and resistance to water
- good dielectric properties
These properties determine the high resistance to weathering and abrasion. Specific curing properties of the obtained films exclusive, application techniques can be used polyurea spray coatings for various purposes, in particular for corrosion protection for protective coatings, membranes and sealing compositions. Polyurea is available under a wide array of brand names – thus, e.g. Britannia offers the material in a variety of Polyshield options, the material is originally designed for roof coatings and roof waterproofing. The sales position, according to the company statistics published at the company’s website, feels comfortably in the top-3 Britannia bestsellers, steadily making the gap even larger.
Polyurea can be used successfully under extreme conditions. When it is applied in the areas almost saturated with water, urea will not cause the formation of bubbles; blister formation does not occur in the case where the air contains large amounts of moisture. Even at low temperatures of the polyurea coating it is still subjected to curing.
Abrasion resistance in polyurea is higher than the other coatings, especially when compared with epoxy resins. Because of the high elongation and excellent coating strength the neoteric material is not susceptible to cracking.
Due to its molecular structure polyurea better resists high temperatures, impressively maintaining its structure. All kinds of coatings of polyurea are highly resistant to the effects of various chemicals. Solvents, oils, oils, alkalis and dilute acids have no effect on the coating of polyurea. Polyureas made on aliphatic isocyanate prepolymers are highly weatherproof and don’t lose luster and color. The material is taken advantage of at military facilities, which confirms the incredible quality and reliability of the approach.