Description
Two component epoxy corrosion-proof primer for steel and concrete surfaces.
Scope and specifics of application
The EPPEX ST primer is a classic epoxy primer based on zinc phosphate pigments with a sufficiently long drying time, but excellent physical and mechanical properties and high anticorrosive efficiency. It is suitable both for anticorrosive treatment of new metal structures and for carrying out repair work. Thick-layer application is possible in single run. The material can also be used as a primer layer for anticorrosive coatings of concrete surfaces.
It is used as a primer or intermediate coating for epoxy and polyurethane-based coating materials in complex protection systems, as well as an independent coating used inside premises or under a canopy.
Due to its high chemical resistance, hardness and resistance to abrasive wear, the primer is ideal for carrying out anti-corrosion work on diverse industrial facilities. It is used for painting the internal surfaces of tanks for storing process water, dark petroleum products and mineral fertilizers as well as for protecting steel surfaces, including for painting bridges, vehicles, cranes, steel masts, conveyors and other steel structures.
Information on the resistance of the material to various media is available on request.
Main fields of application: oil and gas sector, power, mechanical engineering, transport construction.
Instruction for use
Metal surface should be abrasive blasted to grade 1 or 2 due to GOST 9.402 (Sa 2,5 or Sa 2 to ISO 8501-1:2007). Cleaned surface must be free of dust and grease.
If the quality of surface preparation decreases, the service life and its operating performance may change.
Conditions
Two component epoxy primer EPPEX F is applied on the surface at the air temperature from +50С to +350С and relative humidity no more 80%. Application at temperature from -50С is possible, the primer temperature must be no less than +150С to provide processing characteristics. Surface temperature should be 30 higher than dew point..
The process of applying
|
Blending |
The product is two component. Component А is a dispersion of pigments and anticorrosion filler in epoxy resin. Component B is a hardener solution. Mix the contents of the containers in the supplied proportions. After mixing, use within the specified pot life. Mixing sequence: The basis (component A) is mixed with a construction mixer. Then mixed hardener (component B) is added to the basis (component A) and thoroughly mixed with a construction mixer. Attention! Careless mixing or incorrect ratio can lead to uneven curing and painting film properties weakening. |
| Proportions |
100:17 by weight 4:1 by volume |
|
Pot life at 20+20С, no less |
8 hours |
|
Air-free spraying |
Thinning: 0-20% Nozzle diameter: 0,011-0,017" Initial pressure: 120-180 atm |
| Air spraying |
Operation viscosity: 25-60 s Thinning: 10-25% Nozzle diameter:1,4-2,5 mm Initial pressure: 3,0-4,0 atm |
| Cross linking at 200С |
No less 90 min |
| Roller Brush |
Can be recommended for small and hard-to-reach areas. Thin the primer depending on the working conditions when using brush. |
|
Thinner |
Formula thinner EPPEX |
|
Cleaner |
Formula thinner EPPEX, thinners of type Р4, Р5. |
|
Finishing |
Tubing, pistol and other spraying tools must be cleaned after using. |
|
Cleaning |
Wash the tools after using immediately. The frequency of washing depends on the amount of sprayed material, the temperature and the time since the shutdown, including any time lag. |