To protect the surface of the materials usedspecial means. One of them is varnish BT-577 (or "Kuzbasslak"). This product is used to protect metal, wood and concrete surfaces both outdoors and indoors.
Description
"Kuzbasslak" began to produce even before the startThe First World War. Over time, its composition has changed slightly. Previously, P-4 was used as the solvent. Because of this, the layer of varnish dries very long (from 24 to 32 hours). Currently, the composition includes synthetic additives that accelerate the drying process and give the treated surface additional gloss.
Lacquer BT-577 - homogeneous in composition and viscousconsistency liquid black without foreign impurities. It is a coal tar pitch dissolved in organic solvents (benzene, ligroin). Drying oils are not included in the composition. The use of the product together with a chemically resistant perchlorovinyl varnish in a ratio of 1: 1 is allowed.
To improve the quality and increase the life of the surfaces, iron surrey (up to 30-34%) or powder from aluminum (up to 15-20%) is added to it.
"Кузбасслак", цена которого в среднем составляет 50 rubles per 1 liter, is a solution of polymer resins, bitumen in organic solvents. Also, special additives are added to the formulation, which improve physical and chemical properties, performance characteristics.
Technical characteristics of the product
"Kuzbasslak" (its application we will discuss below) has the following protective and waterproofing properties:
- Lacquer has good adhesion to surfaces of various types;
- the layer of the product is obtained glossy, durable, the pores are practically absent;
- It is resistant to mechanical influences and significant loads. After removing the load, the coating is restored to its own values;
- withstands temperature changes and severe frosts, does not crack from the cold;
- Even under adverse weather conditions, the varnish layer retains its structure and the quality of the coating;
- does not allow microorganisms to appear.
The surface of materials treated with varnish is notafraid of frost, moisture (even sea water), exposure to the sun (ultraviolet), corrosion. After completely drying it can be cleaned using detergents.
It is allowed to increase the viscosity of Kuzbasslak instorage time. Before using it, dilute it with a solvent in an amount of up to 10%. This will not entail a deterioration in the indicators and characteristics of the facility.
Advantages and disadvantages
The main advantages of BT-577 varnish include the following:
- High quality protection.
- Availability.
- Versatility.
- High degree of protection against corrosion.
- Ease of use.
Economic efficiency is another significant plus inthe benefit of the means "Kuzbasslak" Its application in several layers does not entail large expenditures, since for one square meter only 100-200 ml of the funds will be spent.
Of the shortcomings can be identified only one - black color, which is difficult to cover with other means if necessary.
Lacquer BT-577 is not applied to the material in production. It is used at the end of the installation work.
Kuzbasslak: application
The tool is mainly used for protectionmetal, concrete (reinforced concrete), brick surfaces from the influence of atmospheric factors. As a waterproofing can also be used means "Kuzbasslak." The use of wood - another direction of use of this composition. This is done to prevent decay of wood.
For the protection of cars (for the most part the bottom)From the appearance of corrosion, Kuzbasslak is also used. The use of the means is justified also in cases with other techniques: for the protection of trailers, carts, towbars and so on.
Used BT-577 for gluing roll or sheet materials when laying the roof. To do this, do not use open fire, which reduces the likelihood of fire.
When using Kuzbasslak before the paint is applied (other paints), it will replace the primer layer.
Application of funds
It is applied in various ways: by brush, rag, roller, spraying with a pulverus. Individual parts of small dimensions can simply be dipped in a lacquer solution.
The surface to be treated must be clean, free of dirt, dust and rust.
Kuzbasslak is applied in several layers (usuallytwo or three layers are sufficient). The drying time depends on the temperature and can vary from a few hours to a day. As a drying accelerator, a desiccant can be used which is added to the solution.
Use the product is allowed in the temperature range plus 10-20 degrees. To store the temperature should be in the range from minus forty to plus forty degrees.
Varnish BT-577 is a poisonous substance. Therefore, all work must be carried out using personal protective equipment and other safety requirements.
