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- Over a decade ago, polyurea spray technology was introduced
Isocyanate + Amine (primary and secondary amines) --> Polyurea
- The reaction is very fast, predictable and consistent
- VOC is very low
- Catalyst free, usually
- Gel time falls within a few seconds and cure times are fast
- Either low pressure or high impingement pressures
(2000-2700 psi) mixing machine are required
- Both aromatic and aliphatic based polyurethane systems are
available
- Have exhibited excellent adhesion to various
substrates (concrete, wood, asphalt and blasted steel)
- Due to the fast reaction, there may be limited surface
wetting and penetration of substrate surfaces for
mechanical bonding. In certain cases surface primers and
adhesion promoters may be necessary.
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Fast Cure. Polyurea can be sprayed on sloped (even vertical ) surfaces without drip or run formation. Foot traffic can resume on coatings applied to horizontal surfaces within 30 seconds.
- Water Insensitivity. Relative moisture and temperature insensitivity during
applications. Little effect is encountered with adhesion or coating
performance due to weather variations(i.e. high humidity, temperature
and residual moisture).
- 100% Solid. Two-component, one-coat system can be sprayed or poured at
1:1 volume ratio. Eliminates the need for multi-coat applications.
It is environmentally friendly.
- Excellent Physical Properties. Including tensile strength, elongation
and tear strength.
- High Thermal Stability. Stable up to 350 F( 175 C).
- Pigment Compatible. Colorant can be added to change appearance and light-
stability.
- Formulation Flexibility. Can be formulated into products ranging from soft to hard elastomer with aromatic and aliphatic isocyanates.
- Reinforcements. Fibers can be incorporated during application for reinforcing.
- Low Application Costs.
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