Varnish АС-528
October 2, 2018
Varnish VL-725, VL-725Г
October 2, 2018
Varnish BT-577
Composition
Lacquer BT 577 consists of a mixture of a solution of bitumen and an organic solvent containing white spirit and solvent in a 1: 2 ratio, as well as synthetic additives and a desiccant. LKM creates a reliable protective coating on the metal. Another purpose of the bituminous varnish BT-577 is its use in the manufacture of enamel BT-177.
Purpose (BT-577)
This paintwork material has found its wide application in various branches of engineering and construction. After drying, the lacquer forms a film that protects the coating from moisture and a number of chemical elements. It is used to cover and protect metal structures and products during transportation and short storage, as well as in the manufacture of aluminum paint.
Application
The surface must be dry and free from dirt and dust. Drawing by a paint sprayer, in bulk, a brush, dipping. Provide fresh air to the workplace. Do not carry out work near an open source of fire.
Specifications (BT-577)
| Name of the indicator | Value |
| Appearance: | Glossy, uniform, smooth surface, free of pock marks and wrinkles, black |
| Relative viscosity at (20.0 + 0.5) ° С, s | 18-35 |
| Mass fraction of nonvolatile substances,% | 39 + 2 |
| Drying time of the film to degree 3 at T (20.0 + 0.5) ° C, h, no more than T (100-110) ° C, min., No more | 2420 |
| Hardness on the device M-3, sm. units, not less | 0.20 |
| Film resistance to static exposure to water at a temperature of (20 + 2) ° С, h, at least | 48 |
| Resistance of the film to the static effect of 3% NaCl solution at (20 + 2) ° С, hours, not less | 3 |
| Nitro-enamel resistance | there should be no peeling, wrinkling, cracking of the nitro-enamel film applied on the primer |
| Film resistance to effects: 3% sodium chloride solution, hours, not less than mineral oil, hours, not less | 2448 |
