Varnish GF-95
October 2, 2018
Varnish КО-815
October 2, 2018
Varnish КО-916К
Composition
Lacquer KO 916k is a solution of polymethylphenylsiloxane resin modified with polyester in xylene. Appearance – a homogeneous transparent solution without mechanical impurities. Opalescence is allowed. It has a good impregnating ability, which is due to the minimum viscosity, low surface tension. Forms a smooth, dense, glossy, solid, durable film. It has fast drying time, well fastens individual coils and layers of winding and insulation. It has a high degree of thermal conductivity, heat resistance and moisture resistance. Shelf life – 12 months from the date of manufacture.
Purpose (KO-916K)
It has dielectric properties and is most often used for processing and impregnating the windings of electrical machines, structures and apparatus, operating for a long time at temperatures of about 180 ° C; it can be used for impregnation of windings of enhanced moisture resistant, tropical and chemically resistant performance.
Application
KO 916k lacquer should be mixed until uniform throughout the entire volume of the container and applied onto the surface previously cleaned of dirt and dust with a brush or a spray gun in 1-2 layers. Work in personal protective equipment (respirator, gloves), it is strictly forbidden to work near an open source of fire. Drying time 1 hour at a temperature of (150 ± 2) ° C.
Specifications (KO-916K)
| No | Name of the indicator | Value |
| one | The appearance of the film | Homogeneous transparent solution without mechanical impurities. Opalescence is allowed. |
| 2 | Conditional viscosity according to the viscometer of the type VZ-246 with a nozzle diameter of 4 mm, at a temperature of (20.0 ± 0.5) ° C not less, (s) | 45-65 |
| 3 | Mass fraction of nonvolatile substances (%) | 64-68 |
| four | Drying time to degree 3 at a temperature (195-205) ° С, no more than, (min) | 15 |
| five | Optical density of lacquer not more than | 1.0 |
| 6 | Cementing ability of the lacquer coating at (15-20) ° С, not less, (kgf) | thirty |
| 7 | Thermoelasticity of a varnish coating at a temperature of (195-200) ° С, not less than, (h) | 50 |
| eight | Specific volume electrical resistance of varnish film, (Ohm · m) | R, M (15 ° C-35 ° C) 45-75% – not less than 1.0×1013; R, M (200 ° C) M (15 ° C-35 ° C) 45-75% – not less than 1, 5×1012; |
| 9 | Electric strength of varnish film, (MV / m) | R, M (15 ° C-35 ° C) (45-75)% – not less than 70; R, M (200 ° C) <20% – not less than 45; M (15 ° C-35 ° C) ( 45-75)% – not less than 40; |
