The specialist in polyurea en polyaspartic coating applications.

PROCESSING OF POLYUREA

TWO COMPONENTS
Polyurea consists of two components (2k):

Component-A: ISO, which consists mainly of :
- Diphenylmethane 4,4 ' diisocyanate (MDI)
- Depending on the application, various types are available , as well as prepolymers based on MDI.

Component B: Polyol, which is composed of a typical basic formula:
- Based polyols (reaction with isocyanates)
- Catalists (controling the reaction)
- Stabilizers (regulation on cellular levels)
- Retardants (influencing fire behavior)
- Blowing agents (foaming)

THE PROCESS

Step 1
The object which is to be coated has to be taped in first to prevent damage to the object and overspray to the parts of the object and the environment around it that has to stay uncoated.
 
Step 2
Next the object has to be prepared by smoothing the surface with putty, sanding it down and degreasing it. In most cases, a primer layer is applied in order to obtain a better adhesion. This will nog be necessary for items that are already painted.
For example, the primer of a car (factory finish) is an excellent base for our coatings.

Step 3
When all the taping, sanding, degreasing and priming has been done, we proceed to spraying / coating. This is done with a 2-component high-pressure machine and a spraygun.
The two separate components are first preheated and then under very high pressure (135 bar) forced into each other at the end of the gun so that a reaction starts immediately, and the real coating will arise within a few seconds! The material will harden instantly and is therefore immediately 'walkable'.

Step 4
Depending on whether what thickness you want you can apply a second layer.
Then all irregularities will be removed or smoothened.
Optional is spraying on an additional mist which results in a special rough structure that is mostly done to make the object have a special look and feel. The degree of coarseness for the mist and structure can also be managed very well.
 
Step 5
To obtain a specific color (RAL preferably) we can apply a topcoat to the freshly coated object. The normal polyurea coatings often have a basic color (black, grey, transparant). In addition to the polyaspartic coatings, which can be made in any color and are directly color stable!

Kunststof Coatings Nederland
Noordeinde 57 j
2761 BR Zevenhuizen, NL
T. +31 (0) 79 593 12 34
F: +31 (0) 79 593 60 46
E. verkoop@kunststofcoatings.nl

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