Anticorrosive Epoxy Primer 4:1

Use

Product designed for anti-corrosion protection of commercial vehicles, transportation means, and agricultural machinery as an filling or insulating primer for sanding or to be applied with „wet-on-wet” technique.

Mixing ratio by volume

Primer: 4
Hardener: 1
Thinner: 20÷50%

Stir thoroughly until achieving homogenous mixture.

Spraying viscosity

Filling version: 30÷40 sec at 20°C/DIN4
Grounding version: 20÷25 sec at 20°C/DIN4
Wet on wet version: 16÷20 sec at 20°C/DIN4

Pot life

Thinning 20-25%: 5h at 20°C
Thinning 30-35%: 5h at 20°C
Thinning 45-50%: 6h at 20°C

Number of layers

1÷2 layers  Recommended coating thickness:

• wet on wet: 35÷50 μm dry (50÷80 μm wet)
• filling primer for sanding: 150÷180 μm dry (200÷300 μm wet)

Pneumatic spraying
Gun parameters RP/HVLP
Thinning 20-35%
Nozzle: 1,6÷2,2 mm; Inlet pressure: 2,0÷2,2 bar
Thinning 45-50%
Nozzle: 1,2÷1,5 mm; Inlet pressure: 2,0÷2,2 bar
Airless spraying with air jacket*
Nozzle: 0,33÷0,38 mm; Pressure: 100÷140 bar; air jacket: 2 bar
*depending of the recommendations of the equipment manufacturer

Evaporation time

Between layers: 5 ÷10 minutes
Before baking: approx. 10 minutes
Before coating (wet-on-wet): 60÷120 minutes

Evaporation time depends on the temperature and the layer thickness.

Hardening time

Depending on the layer thickness:

• at 20°C – filling and insulating (grounding) versions approx. 24h
• at 60°C – approx. 45 minutes

Temperature below 20°C significantly increases the hardening time.

IR drying

10÷15 minutes of short waves for the thickness of 150÷200μm. Do not exceed 60°C. Use as recommended by the equipment manufacturer. Wait about 10 minutes before starting the heater drying.

Dry sanding

Hand sanding: P280÷P320
Machine sanding: P320÷P400

Further work

2K epoxy primers can be directly over coated with following Troton products:

• 2K topcoats.
• 1K basecoats.
• 2K acrylic primers.
• 2K polyester body fillers.
• 2K epoxy body fillers.

General notes

• Do not exceed recommended doses of the hardener!
• The best repair results can be achieved at room temperature. The temperature in the body shop and the temperature of the product should be similar.
• When working with 2K products, it is recommended to use personal protection equipment. Protect the eyes and respiratory system.
• The rooms should be well ventilated.
• Clean the guns and equipment immediately after use.
• The product cannot be applied over wash primers and 1K primers.

Caution: To maintain safety, always follow the instructions given in the MSDS for the products.