Truck Bed Liners and Other Applications Use Polyurea Coating
Polyurea spray coating is made from polyurea, a very tough synthetic resin found in rubber, mineral spirits and calcium carbonate. It has the consistency of thick pudding when it is still wet. The polyurea can then be easily sprayed on a wide range of materials and surfaces with relative ease. This is a great way of finishing your project and will work wonderfully for many years. Spray coating works exceptionally well with many different types of paints, including latex, primer, latex paint, water based acrylic paints, oil based acrylic paints and many other types of paints.
Polyurea coating works by creating a chemically reactions between polyurea resin and a reducing agent. These chemicals react together with water forming a resin which is then spread over an appropriate sized area. The polyurea coating will often bond with an organic substance or a polyurethane additive also added to the mixture during the spray coating process. Resin blends in a wide range of strengths and viscosities, and are suited for a multitude of projects. Spray coating offers high-performance polyurea coating, which are created by a chemical reaction between two ingredients.
Spraying polyurea coating is usually part of a surface preparation process. In this process, various solvents and water are applied to the surfaces to create a more pliable bonding medium. This is then followed by either a hardening agent or a low temperature cure with an ultraviolet light curing solution. Once the surfaces have been properly prepared and cured, they can then be sprayed with polyurea, which will adhere to them and provide a strong and durable finish. Many times the surface preparation will be combined with other techniques such as hot rubbing, gravity casting, ultrasonic assisted casting, etc., depending on the particular project.
Polyurea coatings offer numerous advantages and benefits. They are particularly popular for use on hard-to-reach areas, such as ceilings and floor sub floors where they may lead to corrosion if not protected. In addition to corrosion resistance, polyurea coating will also stand up against oil, grease and other contaminants, making it highly suitable for use in many food processing applications. Another common application is sealing and stabilizing concrete surfaces. By combining polyurea with epoxy resins, it can provide incredibly strong seals which can prevent moisture escape and expansion from reaching a seal.
One important aspect polyurea coating manufacturers must consider when producing polyurea protective coatings is its physical and chemical properties. There are three basic categories of polyurea coating, i.e. loose fill, encapsulated and hard fill. Loose fill polyurea is made by mixing polyurea with resin, calcium carbonate or silicon carbide, while encapsulated polyurea is made by mixing polyurea with a resin and calcium carbonate. The third category, hard fill polyurea, is composed of calcium carbonate mixed with either silicon carbide or silica.
While polyurea coating offers tremendous benefits, it must be protected from exposure to heat, humidity, sunlight and water. Polyureas used for exterior applications are usually coated with Teflon, a common corrosion inhibitor, which helps protect the coating from acid rain and its effects on color. Although Teflon is applied to all polyurea-coated parts, it is particularly important for truck bed liners and shock-absorbent products. Without Teflon, the coating would be subject to rapid degradation due to the constant re-coating of moisture on its surface. Polyurea coatings should also be kept at a consistent temperature range to promote their overall durability and effectiveness.