What is polyurea?

Polyurea is an advanced two-component elastomeric lining system applied with high pressure plural component equipment. Providing a seamless, monolithic, high build lining polyurea can be applied to many substrates and to unlimited thickness. Pure polyurea is derived when an aliphatic or aromatic isocyanate is atomised with an amine terminated resin polymer through a high pressure system. Pure polyurea is 100% solids and contains no solvents or VOCs (volatile organic compounds). Aliphatic based isocyanates are UV stable whilst aromatic compounds will ‘yellow’ or ‘chalk’ when exposed to sunlight.

Polyurea is used extensively worldwide and chosen for its superior characteristics. Examples include the Sydney Harbour Bridge and Beijing-Shanghai High Speed Railway.
Characteristics of Polyurea:
  • High elongation (450% plus) 
  • Rapid gel time (typically <8 seconds)
  • Impact and abrasion resistance
  • High chemical resistance
  • Permanent flexibility (even at sub-zero temperatures)
  • High tear strength
  • High flash point
  • Low water absorption and vapour permeability
  • Potable water applications (eg reservoirs)
  • Quick return to service (foot trafficable after minutes)
  • Moisture and temperature insensitivity during application
  • Excellent adhesion strength
  • Weather resistance (aliphatic polyurea is UV stable)
Selecting the correct system for a project is dependent upon a number of variables such as; substrate material, desired performance specifications, serviceability use, ambient atmospheric conditions, aesthetics, working time frames, life expectancy of the lining, exposure to UV or chemicals plus many other factors. Let us assist with your next project by sending your enquiry here.
Alternatively click either waterproofing or protective coatings for a list of applications.