Polyurea

Manufacturing process
Polyurea
Surface design
Assembly of modules
CNC machining
Vacuum infusion
Fiber spraying
Hot wire cutting
STYROPOR processing
RTM process
Hand laminate
Woodworking & wood construction
Pasting

What is polyurea

The material polyurea impresses with its properties of flexibility, wear resistance, water and weather resistance, as well as very good chemical resistance. The two-component polyurea system generally reacts very quickly. Coating with polyurea is always carried out mechanically using 2K mixing systems. The pot life is in the range of seconds.

Use and advantages

Polyurea is used as a weather-resistant protective layer for swimming pools, renovation of large roof surfaces, as wear protection in gravel works and many other areas.

At ACCENTFORM, we utilize the advantages of this material for the efficient coating of large-format figures and objects. We usually mill large-format objects from EPS (STYROPOR). However, these objects would not be weather-resistant, cannot be painted and have poor compressive strength.

Application

A layer of approx. 2-3 mm is usually applied to the objects by coating them with a polyurea hotcoat. This layer thickness is sufficient to give the objects an impact-resistant surface. The two-component polyurea system is heated to 80° in a machine beforehand and applied to the objects at a high discharge rate

Due to the very fast reaction, the material hardens in fractions of a second. Due to the rapid curing, the heated material hardly has time to spread evenly over the surface of the object because the curing starts immediately. This generally results in a visible spray structure with a polyurea hot coat. Immediately after applying the polyurea layer, a primer is often applied to the objects to ensure a good adhesive bond for subsequent surface coating. Because a polyurea coating usually offers a high level of wear protection, it would be very laborious to smooth the structured surface by grinding. The orange peel-like spray structure gives natural objects, such as animals and plants, an authentic surface. If a paint finish with a matt gloss level is used at the end, everything has been done correctly.

Video Polyurea coating:

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More Information

Example projects:

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