What Are the Properties of Polyurea?

Polyurea is a highly durable coating material for tank lining, bridge decking, secondary containment, and flooring applications. Check out the Best info about polyurea.

Epoxy uses similar chemistry as polyisocyanates (PUs) but doesn’t rely on toxic polyisocyanates to react with polyols – making it more eco-friendly and drying faster. It also cures much quicker.


Unlike epoxy, Polyurea provides an ultra-durable and long-term protective coating that may degrade when exposed to extreme temperatures or caustic chemicals. It is a highly robust material choice with industry-leading tensile strengths and self-healing properties.

Contrary to PUs requiring cross-linking catalysts, polyurea is produced via a chemical reaction between isocyanates and diols with free amine groups. This allows for customization of its microstructure and physical properties by altering the ratio of isocyanate chain extenders – offering more options in terms of gel times, viscosity hardness, and flexibility than ever before!

Polyurea’s durable properties make it the ideal coating material for spray coating applications, such as truck bed liners that protect surfaces from damage while improving fuel efficiency and military equipment linings that minimize impact and bomb blast damage. Polyurea can also line storage tanks and ponds and prevent corrosion on steel structures and machinery; its quick setting properties also make it suitable as water containment liners.


Polyurea is a two-component, sprayable elastomer system designed for industrial settings resistant to abrasions, oils, acids, bases, and extreme temperatures, curing quickly. Due to this property, it has become a popular choice for applications, including bridges, buildings, boats, tanks, pipelines, and heavy machinery.

Urea bonds between hard and soft segments of polyurea provide energy absorption during material deformation, making this property invaluable in blast and impact protection applications.

Polyurea offers outstanding flexibility and high strength and elasticity depending on its formulation, with highly water-resistive characteristics and low water vapor permeation, making it suitable for various applications.

Akfix POLYUREA systems fast cure pure polyurea spray in mold systems designed for indoor and outdoor applications. Applying them with plural component spray proportioning equipment allows for versatility of application as they can be molded using various tooling options allowing for a range of application and sizing options, with specific physical properties that can be met using additives formulated into them for better performance.

Moisture Resistance

Polyurea’s ability to resist abrasion, corrosion, and various chemicals makes it ideal for flooring or ground coverings. Furthermore, its properties also make it suitable for lining tanks, reservoirs, and tunnels and being applied over bridges, roads, harbors, and steel plates.

It boasts excellent abrasion resistance, toughness, elongation, flame-retardant properties, and self-extinguishing abilities, and it withstands heavy mechanical loads while being easily curable at low temperatures, even when moisture is present.

One key advantage of polyurea is its fast curing rate, enabling rapid application across complex surfaces in two passes and covering complex designs quickly. Sprayed directly onto concrete, metal, and wood – even vertical surfaces!- it allows large coating thicknesses to be applied simultaneously. It comes in various colors and slip-resistant additives or surface textures, preventing moisture accumulation within its layers – an especially crucial benefit in environments with high humidity levels.

Chemical Resistance

The chemical resistance of polyurea is due to physical crosslinking between its chains and intermolecular bidentate H-bonds, as well as aromatic hydrogens in its monomers and aromatic groups found within isocyanate and amine components.

This resistance makes epoxy an excellent coating choice for waterproofing, protection, and sealing applications. Applying it quickly and efficiently as a spray coating application process, its high strength provides both abrasion and corrosion protection – such as protecting steel structures from corrosion damage and relining canals quickly and easily.

Polyurea is UV-stable, making it suitable for outdoor and interior atmospheric applications. For instance, it can be used in flooring for high-traffic areas in both commercial and industrial settings. It protects floors against scratches and chemicals while shielding concrete structures and surfaces against harm from weather conditions and chemicals – ideal for protecting bridge decks and waterproof retaining walls.

Thermal Stability

Polyurea is an elastomer plastic material with elastic properties produced through step-growth polymerization of synthetic resin and isocyanate-reactive materials. They create a dual-component system that can then be sprayed on site as a liquid. Due to its rapid reaction kinetics, it can be applied in almost any environment with minimal downtime.

Due to capping amino-terminated segments, oligomers exhibit lower isocyanate-reactivity than conventional polyurethane networks or thermoplastic block copolymers, thus decreasing soluble content while providing superior thermal stability and mechanical performance than their competitors.

Urea bonds in the hard segment of crosslinked mesh structures serve as reversible physical crosslinks and reinforcing components – providing polyurea its strength and durability. This microphase-separated structure gives polyurea its distinctive strength and resilience.

Polyurea’s durability and strength make it suitable for applications requiring impact resistance, like aquarium lining. Polyurea also serves to create themed ornaments, backgrounds, and environments at theme parks and theaters, creating themed ornaments or creating themed environments at theme parks or theaters; rail cars utilizing its strength and abrasion resistance benefit immensely.

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