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TEKNODUR 3830-04

Reaction drying polyurethane

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Two-component reaction drying polyurethane. IR reflective topcoat. Topcoat for metal and synthetics. IR reflective mist coat for military vehicles and equipment. Topcoat for corrosion class 2, 3 and 4a epoxy polyurethane systems referring to FS 8010-0052.

Gives a mat, full, hard, and scratch-resistant surface. Resistant to weak acids, bases, oil, petrol, white spirit, propylene glycol and calcium hypochlorite. Excellent weather resistance. Yellowing-, chalking- and gloss resistant. For internal use if an abrasion resistant and robust surface is required. The product quality is also available as NON-IR reflective paint for e.g., pattern and marking use and cover paint for military vehicles (TEKNODUR 3830-00, colours and gloss levels according to FS 8010-0125 and FS 8010-1635).

Surface preparation

Remove from the surfaces any contaminants that might be detrimental to surface preparation and application. Remove also water-soluble salts by using appropriate methods. Exceeding of the max. re-coating interval requires grinding before re-coating of primed and coated surfaces. The surface must be free from dirt.

Application

MIXING OF THE COMPONENTS: To achieve a satisfactory result, it is important that the hardener is mixed correctly. Inadequate stirring or incorrect mixing ratio results in imperfect curing and impaired film properties. 15 minutes after the addition of hardener the viscosity increases. Final adjustment of the spraying viscosity must be made after this time period.

Application conditions

The surface to be treated must be dry. During the application and drying period the temperature of the ambient air, the surface and the product shall be above +10°C and the relative air humidity below 80%. Adhesion and compatibility to plastic types should be tested before application as variation may occur, dependent upon the type of plastic.

Storage

The storage stability is shown on the label. Store in a tightly closed container.

15 minutes after the addition of hardener the viscosity increases. Final adjustment of the spraying viscosity must be made after this time period.
Solids abt. 42 % by volume
Volatile organic compound (VOC) abt. 505 g/l
Pot life 6h (+23 °C)
Mixing ratio 4,5:1 by volume (comp. A : comp. B)
Hardener Comp. B: TEKNODUR HARDENER 7310-00
Gloss Matt
Drying time – dust free Approx. 1 h (ISO 1517)
Drying time – touch dry Approx. 4 h (ISO 3678)
Drying time – through-dry 7 days
Drying time – forced drying +80°C / 50% RH: - through dry: 30 min.
Thinner TEKNOSOLV 6220-00, TEKNOSOLV 6190-00.
Clean up TEKNOSOLV 6220-00
Colours MGK-93 dark green. Note! The spectral graph is approved on steel applied 40 µm primer in the colour oxide red TS 0482.
Safety markings See safety data sheet.