Product Data Sheet Safety Data Sheet Show all documents

SikaCor® HM Primer Plus

PRIMER BASED ON EPOXY RESIN WITH MIO

SikaCor® HM Primer Plus is a 2-pack primer based on epoxy resin with excellent adhesion to steel.
Low solvent content acc. to Protective Coatings Directive of German Paint Industry Association (VdL-RL 04).

  • High performance corrosion protection
  • Robust and hard
  • Excellent adhesion on steel
Product Data Sheet Safety Data Sheet Show all documents

Usage

Heavy-duty corrosion protection of steel bridges.  

Advantages

  • High performance corrosion protection
  • Robust and hard
  • Excellent adhesion on steel

Packaging

SikaCor® HM Primer Plus30 kg net.
Sika® Thinner EG25 l, 10 l and 3 l
SikaCor® Cleaner160 l and 25 l

Colour

Grey metallic approx. DB 702

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

  • Approved and certified as priming coat according to the German Standard ZTV-ING, part 7, chapter 4 (high-build tack layer underneath asphalt on orthotropic steel bridge decks).
  • Approved and certified as primer coat according to the German Standard ZTV-ING, part 7, chapter 5 (road surface and sidewalk)
  • Approved and certified as optional primer coat according to the German Railway regulation DBS 918084 (page 84) for riveted and welded steel bridges with ballast (ballast troughs)
Product Information

Shelf life

2 years

Storage conditions

In originally sealed containers in a cool and dry environment.

Density

~1.5 kg/l

Solid content

~68 % by volume
~81 % by weight
Technical Information

Chemical resistance

De-icing salts and other usual conditions caused by traffic and temperature.

 

Application

Application Information

Mixing ratio


By weight		Components A : B
90 : 10

Thinner

Sika® Thinner EG
If necessary max. 3% Thinner EG may be added to adapt the viscosity.

Material 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

Dry film thickness 80 μm
+ 5°C after~12 h
+ 10°C after~8 h
+ 20°C after~4 h
+ 30°C after~2.5 h

Waiting time to overcoating

Min. 1 day at + 20°C
Max. 6 days for overcoating with SikaCor® HM Mastic
Max. 30 days for overcoating with SikaCor® Elastomastic TFN and SikaCor® Elastomastic Airless.

Make sure that the surface is free from dust and other contamination.
In case of longer waiting times please consult Sika.

Drying time

Final drying time
Depending on layer thickness and temperature final hardness is achieved within 1 - 2 week.
Tests of the final coating should only be carried out after the stated final drying time.

 
Consumption

Consumption

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

Dry film thickness80 μm
Wet film thickness118 μm
Consumption~0.176 kg/m2
VOC~33.5 g/m2

With SikaCor® HM Primer Plus 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 12944-4.
Free from dirt, oil and grease.
Surface profile „medium (G)” acc. to ISO 8503-2.
For ballast troughs according to DBS 918084 surface profile coarse (G) is required.

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

By brush and roller

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

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