SikaCor® Zinc R Rapid Plus
2-pack, highly pigmented, fast curing zinc-rich primer of low solvent content, based on epoxy resin.
Low solvent content according to Protective Coatings Directive of German Paint Industry Association
(VdL-RL 04).
- Low consumption per square meter
- Applicable at low temperatures
- Very fast drying and curing characteristics
- Excellent corrosion protection
- Mechanically extraordinary resistant
Usage
Designed as a mechanically resistant zinc-rich coating for steel surfaces exposed to atmospheric conditions. Mainly for bridges, pipe lines, containers, industrial and harbour installations or large machinery in industrial or marine environments. In combination with 2-pack intermediate and top coats, SikaCor® Zinc R Rapid Plus is a mechanically, water and chemically resistant coating system for durable corrosion protection up to corrosivity category C5 very high according to ISO 12944-2. In a dry film thickness of 20 μm SikaCor® Zinc R Rapid Plus can also be used as weldable shop primer.Advantages
- Low consumption per square meter
- Applicable at low temperatures
- Very fast drying and curing characteristics
- Excellent corrosion protection
- Mechanically extraordinary resistant
Packaging
| SikaCor® Zinc R Rapid Plus | 22 kg net. |
| Sika® Thinner K | 25 l, 10 l and 3 l |
| SikaCor® Cleaner | 160 l and 25 l |
Colour
Zinc grey
Tinted red
Product Details
APPROVALS / CERTIFICATES
- Approved according ISO 17652-2 as weldable shop primer
- Certificates for C5 high and very high according ISO 12944 are available
Shelf life
1 year
Storage conditions
In originally sealed containers in a cool and dry environment.
Density
~2.3 kg/l
Solid content
~69 % by volume
~88 % by weight
Chemical resistance
The fully cured material is resistant to weathering, water and mechanical wear.
Temperature resistance
Dry heat up to approx. + 150°C, short term up to max. + 180°C
Damp heat up to approx. + 50°C
Application
Mixing ratio
| Components A : B |
| By weight | 94 : 6 |
| By volume | 5.9 : 1 |
Thinner
Sika® Thinner K
If necessary max. 3 % Sika® Thinner K may be added to adapt the viscosity.
If used as weldable shop primer add approx. 15 - 20 % b.w. Sika® Thinner K.
Material temperature
Min. + 0°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.
The surface must be dry and free from ice.
Surface temperature
Min. - 10°C
Pot Life
| At + 10°C | ~8 h |
| At + 20°C | ~5 h |
| At + 30°C | ~2 h |
Drying stage 6
| Dry film thickness 80 μm | |
| 0°C after | 4 h |
| + 5°C after | 1.5 h |
| + 10°C after | 0.75 h |
| + 20°C after | 30 min |
Waiting time to overcoating
Min.: Until drying stage 6 is achieved.
Higher layer thicknesses, but also lower temperatures than specified, lead to longer drying times. The overcoating intervals can be delayed and may need to be determined on site.
Max.: 1 year
In case of longer waiting times please contact us.
When SikaCor® Zinc R Rapid Plus is to be overcoated after a waiting period or after exposure to weathering, all zinc corrosion products or other contaminations must be removed from the surface before the subsequent coating material is applied.
Drying time
Final drying time
Depending on film thickness and temperature full hardness is achieved after 1 - 2 days.
If used as primer for a coating system with top coats the final drying time depends on them and the full hardness is usually achieved after 1 - 2 weeks, depending on film thickness and ambient temperature. Tests of the completed coating system should only be carried out after final curing.
Consumption
Theoretical material-consumption/VOC without loss for medium dry film thickness:
| Dry film thickness | 60 μm | 80 μm*) |
| Wet film thickness | 87 μm | 116 μm |
| Consumption | ~0.200 kg/m2 | ~0.267 kg/m2 |
| VOC | ~24 g/m2 | ~32 g/m2 |
*) for spray application
Apart from small areas the dry film thickness of SikaCor® Zinc R Rapid Plus should not exceed 150 μm per layer.
SURFACE PREPARATION
Steel:
Blast cleaning to Sa 2 ½ according to ISO 12944-4.
Free from dirt, oil and grease.
MIXING
Stir component A very thoroughly using an electric mixer (start slowly, then increase up to approx. 300 rpm). Add component B carefully and mix both components very thoroughly (including sides and bottom of the container). Mix for at least 3 minutes until a homogeneous mixture is achieved. Fill mixed material into clean container and mix again shortly as described above. During mixing and handling of the materials always wear protective goggles, suitable gloves and other protective clothings.
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
Conventional high pressure spraying:
- Nozzle size 1.7 - 2.5 mm
- Pressure 3 - 4 bar
- Oil and water trap is compulsory
Airless-spraying:
- Pressure min. 180 bar
- Nozzle size 0.38 - 0.53 mm (0.015 - 0.021 inch)
- Spraying angle 40° - 80°
CLEANING OF EQUIPMENT
SikaCor® Cleaner