Product Data Sheet Show all documents

SikaCor® EG Phosphat

High-Solid epoxy zinc phosphate primer

SikaCor® EG Phosphat is a 2-pack primer based on epoxy resin containing zinc phosphate. Suitable for use in hot and tropical climatic conditions.

Combined with 2-pack epoxy intermediate coats and 2-pack PUR top coats:
  • Very good corrosion protection
  • Excellent chemical, weather and colour stability
  • Tough elastic and hard but not brittling
  • Insensitive against shock and impact
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Product Data Sheet Show all documents

Usage

Designed as primer for steel surfaces exposed to atmospheric conditions. In combination with 2-pack intermediate and top coats SikaCor® EG Phosphat is a mechanical resistant coating system for rural, urban, industry and sea atmosphere according to ‘ISO 12944-5’. Suitable as welding primer in 20 μm thickness. Test report on request.  

Advantages

Combined with 2-pack epoxy intermediate coats and 2-pack PUR top coats:
  • Very good corrosion protection
  • Excellent chemical, weather and colour stability
  • Tough elastic and hard but not brittling
  • Insensitive against shock and impact

Packaging

SikaCor® EG Phosphat30 kg, 15 kg and 3 kg net.
Sika® Thinner EG25 L, 10 L and 3 L
SikaCor® Cleaner160 L and 25 L

Colour

Sand yellow approximately RAL 1002.

Red brown approximately RAL 8012.

Zinc grey approximately RAL 7005.

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

  • Approved according to German standard ‘TL/TP-KOR-Stahlbauten’, page 87.
Product Information

Shelf life

3 years from date of manufacture.

Storage conditions

In originally sealed containers in a cool and dry environment.

Density

~1.6 kg/l

Solid content

~62 % by volume

~80 % by weight
Technical Information

Chemical Resistance

Combined with 2-pack epoxy intermediate coats and 2-pack PUR top coats:

Weathering, water, sewage, seawater, smoke gas, de-icing salts, acid and lye vapours, oils, grease and short term exposure to fuels and solvents.

Temperature Resistance

Dry heat up to +100 °C, short term up to +150 °C.
In case of higher temperatures please consult Sika Technical Department.

Application

Application Information

Mixing Ratio

Components A : B

By weight

90 : 10

By volume

4.9 : 1

Thinner

Sika® Thinner EG

If necessary maximum 5 % Sika® Thinner EG may be added to adapt the viscosity.


In case of using SikaCor® EG Phosphat as weldable shop coating add approximately 20 % by weight Sika® Thinner EG.

Product Temperature

+5 °C min. / +35 °C max.

Relative Air Humidity

Maximum 85 %, except the surface temperature is significantly higher than the dew point temperature, it shall be at least 3 °C above dew point.

Surface Temperature

+5 °C min. / +35 °C max.

Pot Life

+10 °C

~12 h

+20 °C

~8 h

+30 °C

~5 h

Drying Stage 6

Dry film thickness 80 μm

+5 °C

10 h

+10 °C 7 h
+20 °C

3.5 h

+40 °C 25 min
+80 °C 15 min

Waiting Time / Overcoating

Minimum waiting time until drying stage 6 is achieved to maximum 1 year. In case of longer waiting times please contact Sika Technical Department.

Make sure that all contamination is removed before overcoating with topcoats (see below: surface preparation).

Drying time

Final drying time
Depending on film thickness and temperature full hardness is achieved after 1 - 2 weeks. Tests of the completed coating system should only be carried out after final curing.
Consumption

Consumption

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

Dry film thickness

20 μm80 μm
Wet film thickness30 μm130 μm
Consumption

~0.050 kg/m2

~0.205 kg/m2
VOC~10.3 g/m2~41.3 g/m2

The dry film thickness of the primer coat does not respect the correction factors on rough surfaces according to ISO 19840.

With SikaCor® EG Phosphat up to 120 μm dry film thickness can be achieved by airless spraying.
Application steps

SURFACE PREPARATION

Steel:
Blast cleaning to Sa 2 ½ according to ISO 12944, part 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 approximately 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.

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


Conventional high pressure spraying:

  • Nozzle size 1.5 - 2.5 mm
  • Pressure 3 - 5 bar
  • Oil and water trap is compulsory


Airless-spraying:

  • Pressure minimum 180 bar
  • Nozzle size 0.38 - 0.53 mm (0.015 - 0.021 inch)
  • Spraying angle 40°- 80°

 

CLEANING OF EQUIPMENT

SikaCor® Cleaner

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