EPINOX 74-01
Epoxy primer
- Chemical resistant
- Corrosion protective
- Wear resistant
- 2-component
- Solvent-borne
- Intermediate
- Primer
Two component, thixotropic, thick-layer epoxy primer, pigmented with flake materials.
For priming of steel constructions operating in sea, coastal and industrial environment, steel and cast iron constructions exposed to destructive mechanical factors. Flexible coating provides very good anticorrosive properties. The coating is resistant to sun radiation. The main advantage – significantly longer overcoating window for both epoxy and polyurethane coatings, in comparison to classic epoxy primers.
Technical data sheet
Surface preparation
Before cleaning of surface, it is recommended to wash it with water with addition of OLICLEAN 123 and then rinse with fresh water. The surfaces are prepared according to the different materials as follows:
STEEL SURFACES: The surface to be treated must be dry, salt-, grease- and dust-free, cleaned to the degree of cleanliness according to ISO 8501-1 at least Sa 2½ for submerged areas or at least St 3 for external surfaces. For internal surfaces at least St 2. Porous surfaces should be primed with thinned EPINOX 87-01 paint. Coating gets the highest mechanical and chemical resistance by applying directly to sandblast cleaned steel surfaces (cleanliness at least Sa 2½ according to ISO 8501-1).
COATING OF EPOXY PAINT: The surface to be treated must be dry, salt-, dust-, grease- and corrosion-free.
Additional instructive information for surface preparation can be found in standards EN ISO 12944-4 and ISO 8501-2.
Application
Take into consideration the pot life of the mixture when estimating the amount to be mixed at a time. Before application the base and hardener are mixed in right proportion. Stir thoroughly down to the bottom of the vessel. Wait 15 min (at 23ºC) before use. Mixing by machine is recommended, for example a slow-rotating hand-drill equipped with a mixer. Inadequate stirring or incorrect mixing ratio results in imperfect curing and impaired film properties.
Apply by airless spray or brush. When using a brush it may be necessary to apply several layers to achieve recommended coating thickness.
Airless spray parameter:
Nozzle size 0.019 – 0.025"
Nozzle pressure 20 - 25 MPa
When preparing painting specification, depending on subject and type of construction, different dry film thickness than recommended can be assumed. During airless spray application typical dry film thickness range is between 100 and 250 µm. Different dry film thickness than recommended causes change in theoretical spreading rate, wet film thickness, weight of dry film thickness, drying time, overcoating time and ready for handling time.
In high corrosive environment it is recommended to prepare surface as best as possible and to apply successive layers of paint before full curing of previous layers to achieve best protection. It should be remembered that increasing the degree of cleanliness of the substrate extends the durability of the paint coating.
Application conditions
During the application and drying period the temperature of the ambient air and the surface shall be above +5°C and at least 3°C higher than dew point of the ambient air. Minimum paint temperature should be +15°C and the relative air humidity below 85%. Adequate ventilation during application and drying period is recommended.
Storage
The storage stability is shown on the label. Store in a cool place and in tightly closed containers.
| Total mass of solids | abt. 1300 g/l |
|---|---|
| Volatile organic compound (VOC) | abt. 360 g/l |
| Pot life | 3,5 h (+23 °C) |
| Mixing ratio | 3,5:1 by volume (comp. A : comp. B) |
| Hardener | Comp. B: EPINOX 74-01 UTWARDZACZ |
| Gloss | Matt |
| Practical spreading rate | The values depend on the application technique, surface conditions, overspray, etc. |
| Drying time – dust free | after 2 h |
| Drying time – touch dry | after 7,5 h |
| Drying time – fully cured | after 7 days |
| Thinner | TEKNOSOLV 9506 |
| Clean up | TEKNOSOLV 9506 |
| Colours | TO-840 silver grey |
| Safety markings | See safety data sheet. |