Polyurea and Elastomer coatings for Fast Track solutions for labour intense and time consuming applications
Polyurea spray applied coatings are a recent development within the polyurethane industry developing during the last five years. The technology. The technology combines fast curing, even at very low temperatures, and water insensitivity with exceptional mechanical properties, chemical resistance and durability. The development of new raw materials and improved spray equipment has made it possible to overcome the initial problems associated with this technology such as substrate wetting, intercoat adhesion and surface finish quality.
Polyurea coatings combine extreme application properties such as rapid cure, even at temperatures well below 0°C, and insensitivity to humidity, with exceptional physical properties such as high hardness, flexibility, tear and tensile strength, and chemical and water resistance. This results in good weathering and abrasion resistance. The systems are 100 per cent solids, making them compliant with the strictest VOC regulations. Due to its specific curing profile and exceptional film properties, the polyurea spray coating technique has been introduced into many areas, including corrosion protection, containment, membranes, linings and caulks.
The market development started in the US, followed by Asia, with very strong growth during the second half of the 1990's. In a first stage of development, polyurea was used as a protective layer over polyurethane insulation foam for roofing applications. In Europe, the polyurea spray coatings market only started to develop in the last few years.
The broad window of application conditions, with a high tolerance for humidity, both from the environment and from the substrate and temperature, makes polyurea a very suitable coating for concrete in construction applications such as roof repair, containment liners, membranes, car park decks, bridges and offshore. The high abrasion resistance leads to its application in liners for truck, bulk transport wagons, freight ships and conveyor belts.
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