Enamel EP-773 (25 Photos): Technical Characteristics In Accordance With GOST 23143-83, Consumption And Use Of One-component Paint, Colors

2024 Author: Beatrice Philips | [email protected]. Last modified: 2023-12-16 05:33

The successful operation of any metal surface depends on the degree of their protection and resistance to external influences. The EP-773 anticorrosive enamel will help ensure their strength and long service life. Having studied the technical characteristics of the material and following certain rules of application, you can create not only a reliable, but also a beautiful coating.

Appointment

The composition of chemical resistant enamel "EP-773" and the technology of its manufacture are determined by the standards GOST 23143 83. According to the official documentation, the product is created on the basis of epoxy resin "E-41" with the inclusion of fillers and various pigments. Paints and varnishes are two-component - the dye suspension is mixed with an amine-type hardener immediately before dyeing.

The use of the solution is due to its protective properties.

It prevents exposure to metal:

• high humidity;
• oil solutions;
• mineral salts;
• combustible mixtures such as gasoline and its analogues.

The anti-corrosive composition is relevant for long-term use of ferrous and non-ferrous metals, as well as for concrete surfaces after priming. At home, it can be used to process plumbing equipment, external and internal pipes, various designs and equipment. In addition, it is the most economical option for a protective coating.

Properties

The paint effectively protects metal substrates from the thermal effect of alkali vapors of any concentration, atmospheric phenomena, temperature changes, and rapid wear due to mechanical stress.

Enamel has the following important parameters:

• creates a matte and semi-matte finish;
• has a working viscosity of 25-60, which allows it to be applied both manually and by spraying;
• optimal density is achieved with only two layers with a thickness of no more than 25 microns;

• the material has maximum adhesion to metal and is mainly applied to a primer, but can be applied without it;
• finishing drying takes place in a day, but at a high artificially created temperature, the final drying takes only 2 hours;
• the resulting layer has high elasticity, with a bend of 5 mm;
• for one applied layer, the consumption per square meter of area is quite economical and does not exceed 75 grams of the coloring composition.

The paintwork is available in two basic colors - green and cream, but you can choose any shade of dye to order. True, it should be borne in mind that when exposed to the same potassium alkali, cream tones are less stable and constitute a time period that is four times less than that of enamels of green tones.

After staining, the color, as a rule, does not have deviations from the selected shade, and a smooth film without foreign inclusions forms on the surface.

Preparation of the solution

If the work is carried out indoors, the container with the paint is kept at room temperature for about a day.

To prepare the dye mixture, the sequence of preparation, the observance of proportions and thorough mixing are important:

• first, you should make sure that the one-component suspension is homogeneous in structure and volume, it should be thoroughly mixed in order to completely eliminate the precipitation of sedimentary particles;
• then the hardener No. 1 "DETA" is introduced into the solution, taking into account the proportions indicated in the instructions;

• it is necessary to stir the mixture for 10 minutes until complete homogeneity, then stand for another 40 minutes and stir again to increase spreadability and improve the appearance of the coating;
• after measuring the viscosity for the spray gun (with a nozzle size of 4 mm, it should be no more than 16 s), if necessary, you can dilute the composition with solvent "R-4", 646 or toluene;
• mixing is performed using a paintwork auger, a drill or a construction mixer.

If the solution is not sufficiently homogeneous, and this sometimes happens due to stirring in the packing drum, the painted coating may not dry out well in some places. Fixing this problem is much more difficult than preventing it. In addition, this results in an uneven distribution of the hardener, which leads to a strong, premature thickening. This is why a special open tray is required for stirring.

It should be remembered that staining should not be carried out on wet surfaces. The base must be primed, especially when used in an aggressive environment, and must be dried beforehand.

Metal coating cleaning

This step is necessary as it helps to ensure optimal adhesion of the material to the enamel.

The following works are envisaged:

• cleaning from scale, rust, dirt and foreign small particles of debris - for these purposes, a rust converter, abrasive cloth, special brushes with wire bristles for metal, sandblasting chambers are used;
• grinding and removal of metal dust;
• degreasing oil and greasy stains with a solvent.

For further priming, you will need EP-0020 or EP-0010 putty compounds specially designed for epoxy paint. Two coats are enough for subsequent enamel painting. Concrete surfaces are treated with a special compound "Sibton EP-Primer".

Staining rules

In everyday life, painting with a brush and a roller is more often used, but for large volumes of work, it is wiser to use pneumatic devices. Painting is carried out at temperatures from +15 to +35 degrees and moderate humidity up to 80%. In some cases, staining in frost down to -10 degrees is allowed, but mixing is carried out at room temperature. But this is undesirable, as it increases the drying time up to a week.

Usually EP-773 enamel is applied in two layers, although coloring is also provided to create a multilayer coating.

Each subsequent application should take place at intervals of a day, since it is during this time that the coating dries completely. By the way, metal can be dried both naturally and hot using infrared heaters and other devices. Heating should be about +120 degrees.

You should not be upset when, after the final drying, a sticky film is found on the treated metal - this is not a defect at all, but it appears due to the presence of plasticizers. It is enough to wash off the greasy layer with soapy water, and this side effect will be eliminated.

When working with paints and varnishes, one must not forget about personal safety measures . It is necessary to carry out the working process in protective clothing, gloves, a gas mask or respirator and having the tools necessary for firefighting nearby.

For those who decide to use this composition, we can recommend buying only high-quality products from a trusted manufacturer, for example, from the PFC Spektr enterprise, which guarantees excellent product characteristics that can ensure the long-term use of various types of metal structures.