SikaCor® Aktivprimer Rapid
Quick-drying, 1-pack corrosion protection primer, containing zinc phosphate based on synthetic resin combination. Low solvent content according to Protective Coatings Directive of German Paint Industry Association (VdL-RL 04).
- Low solvent content, ecologically harmless
- VOC content < 350 g/l
- Versatilely overcoatable with 1-pack coatings and SikaCor® ZP Primer
- Economical
- High-build
- Fast-drying
Usage
For surfaces and objects, where only manually de-rusting is possible and economical. Suitable as high performance primer for surfaces blast-cleaned to Sa 2 ½, for stainless steel, aluminium and sweep-blasted galvanized surfaces. Suitable for atmospherical corrosion protection and occasional condensation. As intermediate coat / tie coat on well adhering old coating systems.Advantages
- Low solvent content, ecologically harmless
- VOC content < 350 g/l
- Versatilely overcoatable with 1-pack coatings and SikaCor® ZP Primer
- Economical
- High-build
- Fast-drying
Packaging
SikaCor® Aktivprimer Rapid | 15 kg net., 3 l and 0.75 l |
Sika® Thinner S | 25 l, 10 l and 3 l |
SikaCor® Cleaner | 160 l and 25 l |
Colour
Oxide red, beige yellow
Product Details
Shelf life
2 years
Storage conditions
In originally sealed containers in a cool and dry environment.
Density
~1.6 kg/l
Solid content
~60 % by volume
~78 % by weight
Temperature resistance
Dry heat up to max. + 80°C
Application
Thinner
If necessary max. 2 % Sika® Thinner S may be added to adapt the viscosity.
Product temperature
Min. + 5°C
Relative air humidity
Max. 85 %, except the surface temperature is significantly higher than the dew point temperature, it shall be at least 3 K above dew point.
Surface temperature
Min. + 5°C
Drying stage 6
Dry film thickness 80 μm | |
+ 5°C after | 4 h |
+ 20°C after | 3 h |
Waiting time to overcoating
Between priming coats:
After drying stage 6 is achieved (see above)
Between SikaCor® Aktivprimer Rapid and 1-pack top coats:
Min. 1 day at + 20°C
Between SikaCor® Aktivprimer Rapid and SikaCor® ZP Primer:
Min. 3 days at + 20°C
Drying time
Final drying time
Depending on film thickness, temperature and ventilation full hardness is achieved within several days.
Depending on local conditions full curing with top coat is achieved within 1 - 2 weeks.
Consumption
Theoretical material-consumption/VOC without loss for medium dry film thickness:
Dry film thickness | 80 μm |
Wet film thickness | 130 μm |
Consumption | ~0.215 kg/m2 |
VOC | ~46.9 g/m2 |
SURFACE PREPARATION
Manually de-rusted surfaces:
Prepare surface by wire brush, trowel, power tool to surface preparation grade St 2 resp. St 3 according to ISO 12944-4.
Steel:
Blast-cleaning to Sa 2 ½ according to ISO 12944-4.
Galvanized surfaces:
Sweep-blasting to a uniform rough, grey surface is achieved.
Stainless steel and aluminium:
The substrate must be free from dirt, oil, grease and corrosion products.
Maintenance coatings:
In case of well adhering old coating systems, careful cleaning is sufficient. Loose particles must be removed, defective areas must be de-rusted to PSa 2 ½, PMa or PSt 2 and patch-primed with SikaCor® Aktivprimer Rapid.
For contaminated and weathered surfaces we recommend to clean with SikaCor® Wash.
MIXING
SikaCor® Aktivprimer Rapid is supplied ready for use.
Stir thoroughly prior to application.
APPLICATION
The method of application has a major effect on achieving uniform thickness and appearance. Spray application will give the best results. The indicated dry film thickness is easily achieved by airless spray. Adding solvents reduces the sag resistance and the dry film thickness. In case of application by roller or brush, additional applications may become necessary to achieve the required coating thickness, depending on type of construction, site conditions, colour shade etc. Prior to major coating operations a test application on site may be useful to ensure the selected application method will provide the requested results.
By brush and roller:
- As a good wetting and penetration into the substrate is essential for the efficiency of the priming coat, the best result is achieved by using a distemper brush or similar
- Dry film thickness per application 40 - 60 μm by brush application
Conventional high pressure spraying:
- Nozzle size 1.5 - 2.0 mm
- Pressure 4 - 6 bar
Airless-spraying:
- Pressure min. 180 bar
- Nozzle size 0.38 - 0.53 mm (0.015 - 0.021 inch)
- Spraying angle 65° - 80°
- Dry film thickness per application 60 - 80 μm by spray application
CLEANING OF EQUIPMENT
SikaCor® Cleaner