Teknodur Combi 3560-78 Base

The paint surface has good mechanical properties and good weather resistance. As the paint is quick-drying, it is suitable for use in two-component paint lines where high productivity is required.

Mixing ratio

3:1 volume ratio. Base (comp. A): + Hardener (comp. B): TEKNODUR HARDENER 7227.

Pot life at +23 °С (Potlife) 15 minutes.

Pre-treatment The surfaces are cleaned of impurities that may be harmful to the surface treatment and the paint. In addition, water-soluble salts are removed by suitable methods. The surfaces of the various materials are pre-treated as follows:

STEEL SURFACES: Remove scale and rust by sandblasting to degree of cleanliness SA 2½ (standard ISO 8501-1). The profile of the sandblasted surface must be rough. (reference comparator "G") ISO 8503-2 (G). Thin sheet surfaces can be pre-treated by phosphating.

OLD PAINTED SURFACES SUITABLE FOR OVERCOATING: Impurities that can be harmful to the application of the paint (eg grease and salts) are removed. The surfaces must be dry and clean. Old, painted surfaces that have exceeded the maximum paintability must be roughened. Pre-treatment of damaged parts is carried out according to the requirements for surface and maintenance painting.

GALVANIZED SURFACES: Hot-dip galvanized steel structures that are exposed to the weather can be painted if the surface is sandblasted (SaS) so that the entire surface becomes matt. Suitable blowing agents are e.g. aluminum oxide and natural sand. Paint is not recommended for galvanized structures that must be immersed in water or soil.

ALUMINUM SURFACES: The surfaces are treated with a suitable cleaning agent or TEKNOCLEAN 1950-02. Surfaces exposed to the weather are roughened with sandblasting (AISaS) or sanding. Choose the place and time for the treatment, taking into account that the pre-treated surface does not become dirty or damp before the subsequent treatment.

Mixing components Consider the pot life of the mixture when calculating the amount to be mixed at one time. Before starting the painting, base and hardener are mixed in the right ratio. Carefully stir down to the bottom of the container. Inadequate stirring or incorrect mixing ratio results in insufficient curing and poorer film properties.

Application Suitable primers: TEKNOPLAST PRIMER 5, TEKNODUR PRIMER 3411, TEKNOCRYL AQUA PRIMER 2788, TEKNOCRYL AQUA COMBI 2780, TEKNOZINC 80 SE and TEKNOZINC 90 SE.

Stir the paint carefully before use. If necessary, the paint can be thinned with TEKNOSOLV 9526 or fast thinner TEKNOSOLV 1129. Do not use ordinary thinners, as they may contain alcohol, which will react with the hardener.

Apply with conventional or airless spraying. Use nozzle size 0.013-0.017”. Before use, clean the spray gun and container with the paint's own thinner. For application, it is recommended to use 2-component spray equipment.

Application conditions The surface to be painted must be dry and the relative humidity below 80%. During application and curing, the temperature of the air and the surface must be above -5 °C, and the temperature of the paint must be above +15 °C during mixing and application. The temperature of the surface and the paint must be at least +3 °C above the dew point of the air. The hardener and the finished paint mixture contain isocyanates. In poorly ventilated rooms and especially when spraying, the use of a fresh air mask is recommended. For short or temporary work, a mask with an A2-P2 filter can be used. In this case, eyes and face must be protected.

OTHER INFORMATION The hardener reacts with humidity. Store cool and dry indoors in tightly sealed packaging. Stock stability is limited. An opened hardener should be used within two weeks.