TEKNOZINC 3233
1C moisture cure zinc-rich primer
- Corrosion protective
- Wear resistant
- 1-component
- Solvent-borne
- Primer
Zinc-rich corrosion protective MCU (moisture cured urethane) primer for steel.
It is useful for corrosion protection of sandblasted steel constructions. TEKNOZINC 3233 offers a good cathodic corrosion protection, similar to galvanizing, excellent resistance to mechanical wear, tested resistance to hydraulic oils and diesel fuels (1000 h at 60°C). Weldability: tested according to DVS guideline 0501 editions 03/76.
Surface preparation
Remove from the surfaces any contaminants that might be detrimental to surface preparation and application. Remove also water-soluble salts by using appropriate methods. The surfaces are prepared according to the different materials as follows:
STEEL SURFACES: Remove mill scale and rust by blast cleaning to preparation grade Sa 2½ (standard ISO 8501-1). Roughening the surface of thin-plate improves the adhesion of the paint to the substrate.
OLD PAINTED SURFACES SUITABLE FOR OVERCOATING: Any impurities that might be detrimental to the application of paint (e.g. grease and salts) are removed. The surfaces must be dry and clean. Old, painted surfaces that have exceeded the maximum overcoating time are to be roughened as well. Damaged parts are prepared in accordance with the requirements of the substrate and the maintenance coating.
The place and time of the preparation are to be chosen so that the prepared surface will not get dirty or damp before the subsequent treatment.
Additional instructive information for surface preparation can be found in standards EN ISO 12944-4 and ISO 8501-2.
Application
Stir thoroughly before use.
Suitable airless nozzle size 0.013 - 0.017"
Before use clean the spray gun and paint vessels with a thinner suitable for the paint. If required the paint can be diluted with TEKNOSOLV 6740-03 or TEKNOSOLV 6740.
Application conditions
The surface to be treated must be dry. During the application and drying period the temperature of the ambient air and the surface shall be at least above +5°C, and the temperature of the product above +15°C during mixing and spraying. The temperature of the surface to be treated must be at least +3°C above the dew point of the ambient air.
Storage
The storage stability is shown on the label. Store in a cool place and in tightly closed containers.
| Solids | abt. 62 % by volume |
|---|---|
| Weight solids | abt. 87 % by weight |
| Volatile organic compound (VOC) | abt. 330 g/l |
| Gloss | Matt |
| Density | abt. 2.6 g/ml |
| Practical spreading rate | The values depend on the application technique, surface conditions, overspray, etc. |
| Drying time – dust free | 20 min |
| Drying time – touch dry | 1 h |
| Thinner | TEKNOSOLV 6740-03 or TEKNOSOLV 6740. |
| Clean up | TEKNOSOLV 6740-03 or TEKNOSOLV 6740. |
| Colours | RAL 7012 |
| Safety markings | See safety data sheet. |