Product Data Sheet
Show all documents
SikaCor® Zinc R

SikaCor® Zinc R

Low-solvent Epoxy zinc-rich primer for steel

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
Find a Distributor
Product Data Sheet
Show all documents

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 R26 kg, 15 kg and 7 kg net.
Sika® Thinner K25 l, 10 l and 3 l
SikaCor® Cleaner160 l and 25 l

Colour

Zinc grey, mat.-no. 687.03

Tinted red, mat.-no. 687.04

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • Approved according to German standard ‘TL/TP-KOR-Stahlbauten, Blatt 87'.
  • Approved according to Austrian standard RVS 15.05.11 and RVS 08.09.02.
Product Information

Shelf Life

1 year

Storage Conditions

In original sealed containers in a cool and dry environment.

Density

~2.9 kg/l

Solid Content

~67 % by volume

~89 % by weight
Technical Information

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. + 200°C
Damp heat up to approx. + 50°C

Application

Application Information

Mixing Ratio

Components A : B

By weight

94 : 6

By volume4.4 : 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 after1 h3 h
+ 10°C after

1 h

2.5 h
+ 20°C after45 min2 h
+ 40°C after30 min1.5 h
+ 80°C after20 min45 min

Waiting Time / Overcoating

Min. until drying stage 6 is achieved

Max. 1 year

In case of longer waiting times please contact Sika.


Prior to further applications possible contamination must be removed.

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

Consumption

Theoretical material-consumption/VOC without loss for medium dry film thickness:

Dry film thickness

60 μm80 μm*)
Wet film thickness90 μm120 μm
Consumption

~0.260 kg/m2

~0.345 kg/m2
VOC~29 g/m2~38 g/m2

*) for spray application

Apart from small areas the dry film thickness of SikaCor® Zinc R should not exceed 150 μm per layer.
Application steps

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

Documents