Polyurea is a material formed through the reaction of diamines and diisocyanates, and is widely known for its robust physical qualities compared to most other synthetic polymers. The material is witnessing increased demand owing to its superior characteristics including very high tensile strength, water tight properties, lack of volatile organic compounds, resistance to abrasion, extensive range of hardness, and superior resistance to chemicals.
The reaction between diamine and diisocyanate causes the creation of polyurea at a rapid rate. In turn, the resultant exothermic heat is key to the completion of the reaction. The use of sprays can allow for the application of polyurea coatings in various thickness options. In most cases, high pressure equipment for spraying is used for the uniform application of the fast-setting material.
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Extensive Scope of Application Drives Adoption
Spray polyurea coatings are used widely in a number of end use industries, including construction for water proofing and protection against erosion, manufacturing for surface protection, and oil and gas for abrasion and corrosion protection, among others.
In addition, spray polyurea elastomers can have multipurpose applications in a single end use industry. For instance, rail road industries make use of spray polyurea elastomers for not only surface protection, but also for protection against corrosion.
Some of the other functions of spray polyurea elastomers include, providing protection against rust, bolstering the strength of movable components, protection against blasts and impacts, reinforcing fabrics to improve durability, and hardening or softening surfaces for improved resistance against impacts.
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Customization Allows Wider Range of Use
While all types of spray urea elastomers are applied with high pressure spray guns. Manufacturers are pushing towards the development of alternate formulations, to allow for increased scope of application for specific end uses.
Manufacturers have to consider a number of factors such as the operational temperature range, the environment, thermal shrinkage, intended function, dynamic or static nature of application, and hydrolytic resistance before changes are made to the formulations.
Further, the finished layers of different fast setting spray polyurea elastomers can result in different levels of hardness on the basis of the formulation. This is essential to the increased application of the polyurea elastomer in different applications.
Mining and Construction Applications are Key to High Demand
The properties of resistance to abrasion and corrosion have driven the demand for spray polyurea elastomers for mining facilities and relevant equipment. In addition, the construction industry also extensively uses spray polyurea elastomers for erosion protection, concrete surface protection, and waterproofing.
The development of spray polyurea elastomers allows for superior time and cost effective solutions to numerous coating issues. Consistent reactivity, stable record of performance, in addition to compliance with regulations related to economy and environment are expected to play major roles for the growth of polyurea elastomer technology.
Key efforts by manufacturers in the near future include the development of smoother film finishes, without compromising on the fast processing properties of the material, in addition to the continued tweaking of formulations to expand the range of applications.
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