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Silica-organic composition having thermal stability up to 300°C, and is designed for corrosion protection of constructions of bridges and tunnels, as well as other products made from metal, concrete and other porous building materials.
After drying, the enamel forms a homogeneous matte film;
Drying time OS 12-01 to 4-th degree at 20°C not more than 4 hours;
Film adhesion, not more than 2 points;
When the temperature changes from 400°C to -60°C, the coating does not flake or peel;
Heat resistance at 400°c for at least 3 hours.
The surface must be completely cleaned from dust, dirt, ice, snow, layers of old paint with a weak grip. On the surface there shouldn't be oil (fat) and resin stains. If still available, they should be cut down, areas of the substrate after cutting out to fill a Vetonit putty, acrylic VD-AK-00151, penetrating acrylic primer or other materials compatible with the organic silicate compositions.
If OS 12-01 applied onto concrete, make sure that the surface has no areas vykroshivaetsja concrete or surface layer that has weak adhesion with the concrete mass.
It is not recommended to apply the composition to the brick facades earlier than one year after the laying.
Do not apply organic silicate coatings on wet surfaces. The humidity of the surface layer of concrete or brick shall not exceed 6 %.
Silica-organic composition 12-01 of the OS before applying the stirred mixer vertical type for at least 10 minutes in the packaging of the manufacturer until the complete disappearance of the precipitate, and homogenous, and then allowed to stand for about 10 minutes until the disappearance of bubbles.
Silica-organic composition is supplied ready to apply with indicators of the relative viscosity of 20 seconds, but for operational reasons its dilution should be used only the following solvents: toluene at the temperature of application of the composition from -30°C to +10°C; xylene at a temperature of from 10°to 35 ° C followed by stirring the manufacturer's container. The amount of solvent should not exceed 15% of the total. Introduction 1 % of solvent by weight of composition provides a viscosity reduction of approximately 2 seconds. To dilute the composition immediately before use.
Composition 12-01 of the OS can be applied by spray gun (pneumatic or airless), roller, brush or dipping. When the spray nozzle diameter should be 1,8 — 2,5 mm. the distance from the nozzle of the spray gun to the painted surface should be 200-300 mm, depending on air pressure and nozzle diameter, air pressure when spraying should be 1.5-2.5 kg/cm2.
To obtain high-quality coating temperature of the composition when applied should be close to the surface temperature of the coated product.
The metal surface cross painted in 2-3 layers with intermediate drying between the layers “to touch” of 0.5-1.0 hours depending on the ambient temperature.
Concrete, asbestos cement, plastered, tsementnopeschany surfaces painted no less than three layers.
The second and subsequent layers is performed at a positive ambient temperature of not earlier than 1 hour when spraying enamel, 2 hours when applied by brush or roller. At negative ambient temperatures, the dwell time between coats of enamel increases by 2-3 times.
The number of layers of coating is determined by the thickness of the single layer coating obtained experimentally in each individual case depending on the application method, the total thickness of the coating and polymerization conditions.
The coating dries to a 3-th degree depending on humidity and air temperature for 2 hours, in the future, there is the polymerization and curing of the coating.
At breaks in work arrangement should be kept in a tightly closed container, before the resumption of work the song must stir again and stand for at least 10 minutes.
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