Rapid HS 4:1

Acrylic Primer

Variants

ColourArt. No.CapacityQuantity per carton
grey165120,8 l + 0,2 l6
black165130,8 l + 0,2 l6
white165140,8 l + 0,2 l6
grey165163,6 l4
black165173,6 l4
white165183,6 l4
hardener165220,9 l4

Gloss grade

matt
Rapid HS 4:1
New

Technical documentation

Description

High quality 2K fast-drying acrylic primer with added anti-corrosive agents, designed for automotive body repairs. The primer features high solids content, excellent filling properties and very short curing time – ready for sanding just 1 hour after application (at 20°C). Additionally, it offers excellent adhesion to difficult substrates and easy application.

Advantages

  • Very short curing time (1h/20°C after application).
  • Excellent filling properties.
  • Excellent adhesion to difficult substrates.
  • Anti-corrosive properties.
  • Easy application.

Substrates

Acrylic Primer RAPID HS 4:1 can be applied over:

  • Steel and aluminum after flatting and degreasing.
  • Zinc coated steel after flatting and degreasing.
  • Sanded polyester-glass laminates (GFK/GRP).
  • Polyester putties.
  • Epoxy primers.
  • Wash primers.
  • Old finishes in good condition after flatting and degreasing.

Good preparation is necessary for achieving best results.

Following sandpaper gradations are recommended:

  • Sanding by hand (dry or wet): P280÷P320 (GRP P400).
  • Sanding by machine (dry): P180÷P220.

Important informations

  • Przetrzeć odtłuścić

    degrease

  • Proporcje mieszania

    Mixing ratio
    4 : 1 + 5%

  • Lepkość natryskowa

    Spraying viscosity
    30 ÷ 50 s / 20°C

  • Żywotność mieszanki

    Pot life
    65 min / 20°C

  • Liczba warstw

    2÷3 layers
    HVLP / RP
    ø1,5 ÷ 2,0 mm

  • Czas odparowania

    between layers
    5 ÷ 10 min

  • Czas odparowania

    before baking
    ~ 10 min

  • Czas utwardzania

    Hardening time
    1 h / 20°C
    10 min / 60°C

  • Szlifowanie na sucho

    P360 ÷ P500

  • Szlifowanie na mokro

    P600 ÷ P1000

Application process

  • Zastosowanie
  • Use

    Filling acrylic primer designed for car body repairs.

  • Proporcje mieszania
  • Mixing ratio by volume

    Primer: 4
    Hardener: 1
    Thinner: 5%

    Stir thoroughly until achieving homogenous mixture.

  • Lepkość natryskowa
  • Spraying viscosity

    30÷50 seconds at 20oC/DIN4.

  • Żywotność mieszanki
  • Pot life

    Approx. 65 minutes at 20°C.

  • Liczba warstw
  • Number of layers

    2÷3 layers. Approx. 70÷90 µm for one layer.
    Gun parameters:
    RP nozzle: 1.6÷2.0 mm; Pressure of input: 2.0÷2.2 bars.
    HVLP nozzle: 1.5÷1.9 mm; Inlet pressure: 2.0 bars.

  • Czas odparowania
  • Evaporation time

    Between layers: 5÷10 minutes
    Before baking: about 10 minutes

    Evaporation time depends on the temperature and the number of layers.

  • Czas utwardzania
  • Hardening time

    For thickness of 150÷180 µm:

    • at 20°C: approx. 1 h.
    • at 60°C: approx. 10 minutes.

    For thickness of 180÷250 µm:

    • at 20°C: approx. 2 h.

    Temperature below 20°C significantly increases the hardening time.

  • Suszenie promieniem IR
  • IR Drying

    10÷15 minutes of short waves for the thickness of 150÷250 µm. Do not exceed 60°C. Use as recommended by the equipment manufacturer. Wait about 10 minutes before starting the heater drying.

  • Szlifowanie na sucho
  • Dry sanding

    Machine sanding: P360÷P500
    Hand sanding: P280÷P320.

  • Szlifowanie na mokro
  • Wet sanding

    Machine sanding: P600÷P1000.
    Hand sanding: P800÷P1000.

  • Informacja
  • Further work

    2K acrylic fillers can be directly over coated with:

    • 2K acrylic topcoats.
    • 1K base coats.
  • Informacja
  • 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.

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

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