SikaCor® Zinc R
2-pack, highly pigmented 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).
- Excellent corrosion protection
- Mechanically extraordinary resistant
- Extremely high water and condensation water resistance
- Fast drying and curing characteristics
Usage
Robust corrosion protection primer for steel offering a wide range of applications. Mainly for bridges, pipe lines, containers, industrial and harbour installations, sewage treatment plants and large machinery; submerged or non-submerged in industrial or marine environments. Particularly suited for workshop application as heavy duty transportable coating. In a dry film thickness of 20 μm SikaCor® Zinc R can also be employed as welding primer. Test report is available upon request.Advantages
- Excellent corrosion protection
- Mechanically extraordinary resistant
- Extremely high water and condensation water resistance
- Fast drying and curing characteristics
Packaging
| SikaCor® Zinc R | 15 kg |
| Sika® Thinner K | 25 L, 10 L and 3 L |
| SikaCor® Cleaner | 25 L |
Colour
Zinc grey, mat.-no. 687.03
Tinted red, mat.-no. 687.04
Product Details
APPROVALS / STANDARDS
- Approved according to German standard ‘TL/TP-KOR-Stahlbauten’, page 87.
Shelf Life
1 year
Storage Conditions
In original sealed containers in a cool and dry environment.
Density
~ 2.8 kg/litre
Solid Content
~ 67 % by volume
~ 89 % by weight
Chemical Resistance
The fully cured material is resistant to weathering, water and mechanical wear.
Thermal 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 | 4.4 : 1 |
Thinner
Sika® Thinner K If necessary max. 3 % Sika® Thinner K may be added to adapt the viscosity. In case of using as weldable shop primer add ~ 12 % b.w. Sika® Thinner K.
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
Pot Life
| At +10 °C | ~ 12 h |
| At +20 °C | ~ 8 h |
| At +30 °C | ~ 5 h |
Drying Stage 6
| DFT 20 μm | DFT 80 μm | |
| +5 °C after | 1 h | 3 h |
| +10 °C after | 1 h | 2.5 h |
| +20 °C after | 45 min | 2 h |
| +40 °C after | 30 min | 1.5 h |
| +80 °C after | 20 min | 45 min |
Waiting Time / Overcoating
Between SikaCor® Zinc R, SikaCor® EG-1 and SikaCor® EG-1 VHS:Min. until drying stage 6 is achievedMax. 4 yearsIn case of longer waiting time please contact Sika.Between SikaCor® Zinc R and other top coats:Min. until drying stage 6 is achievedMax. depending on top coatIn case of intermediate storage possible contamination must be removed before further coats may be 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 depend on them and the full hardness is usually achieved after 1–2 weeks, depending on film thickness and ambient temperature. Tests of the completed system should only be carried out after final drying.
Consumption
Theoretical material-consumption/VOC without loss for medium dry film thickness:
| Dry film thickness | 60 μm | 80 μm*) |
| Wet film thickness | 90 μm | 120 μm |
| Consumption | ~ 0.250 kg/m2 | ~ 0.335 kg/m2 |
*) for spray application
Apart from small areas the dry film thickness of SikaCor® Zinc R 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.
For contaminated and weathered surfaces we recommend to clean with SikaCor® Wash.
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 TOOLS
SikaCor® Cleaner