Technical details
System Description
"RPC Primer PU-ARP (1K)" is a one-component polyurethane primer cured with moisture in the air.
Scope of application
RPC Primer PU-ARP (1K) is used for priming the base before applying protective coatings based on polyurea in order to improve the adhesion of polymer coatings to the base.
Physical and chemical indicators "RPC Primer PU-RC (1K)"
| Density at 20 °C | 1.00-1.10 g/cm3 |
| Viscosity at 20 °C | 50 - 250 mPa·s |
| Content of non-volatile substances | 65% |
| Adhesion strength to concrete and metal, not less | 5 MPa |
| Recommended consumption |
150 g per m2 |
Preparatory measures before starting work
- Temperature of the primer, base surface and ambient air in the work area: from + 5 °Cto + 25 °C.
- Relative air humidity: not more than 80%.
- The surface temperature of the substrate must be at least 3 °C above the dew point determined for the given conditions, both during the application of the primer and during the entire time required for the complete cure of the primer layer.
- The basis for applying Chemtrast Primer-PM (1K) must meet the requirements of SNiP 3.04.01-87.
- The moisture content of the base is not higher than 4%.
- Remove dirt, corrosion products and scale from the surface.
- Clean the metal surface to grade 1 in accordance with GOST 9.402, the concrete surface with a grinder or abrasive treatment.
Application method
Stir the primer with a low-speed (no more than 150 rpm) mixer (drill with mixing nozzle) for 5 minutes. The primer should be applied in a uniform, thin layer without gaps using a short nap nylon or fur roller. Airless spray equipment may be used. The primer is colored to visually show the primed and non-primed areas. After applying the primer, wait 80-90 minutes. Then assess the quality of the surface priming by performing a visual inspection. Areas where the primer is completely absorbed should be re-primed. A well-primed substrate should have a uniform, slightly glossy surface. The polyurea coating should be applied while the primer is tacky.
Precautions and health effects
When processing, it is necessary to take into account safety measures according to TU.
Shelf life
Shelf life of the primer is 6 months without opening the drums.
Rights
The data provided in this technical information is based on our current technical knowledge and experience and is believed to be accurate at the time of publication. Nothing in this publication should be construed as a warranty, either expressed or implied. Due to the abundance of factors that can influence the recycling and use of our materials, they do not excuse the recycler from its own testing and experimentation. In all circumstances, it is the user's responsibility to correctly determine the applicability of such information or of the product itself for a specific purpose of the user.