Lacquer KO-921
Features
Lacquer KO-921 is a clear homogenous solution of polymethylphenylsilxane resin in organic solvents. Polymethylphenylsiloxane resin is obtained by hydrolytic co-condensation of phenyltrichlorosilane and dimethyldichlorosilane with further polymerization.
- Applications
- Health and safety information
- Guaranteed shelf life
- Lacquer KO-921 is distinguished by its low drying temperature, good dielectric properties, moisture and heat resistance.
- The product serves for impregnation of glass winding of wires and cables. It is also used as impregnating and coating lacquer, operating at 250ºC.
- The product is widely used for protection of electric machines and apparatus from mold and fungi.
- In food industry, the lacquer is used as release agent for metal forms for baking meat as well as protective coat for metal forms for baking bread and biscuits.
- The polymerized lacquer coat is nontoxic, fire-safe.
- Shelf life - 12 Months
Physical and chemical properties
| Weight of non-volatiles, % | 50 ± 2 | ||
| Viscosity, 20 ºC, by viscometer VZ-246 with orifice Ø 4 mm, s | 17-27 | ||
| Dryout time, 3rd degree, (200±5)ºC, mins, max. | 15 | ||
| Weight, of Si-bound hydrogen, %, max. | 0,001 | ||
| Thermo elasticity, 200 ºC, hrs, min. | 75 | ||
| Optical density, max. | 0,5 | ||
| Dielectric properties | Test conditions | ||
| R,М(15-35С) 45-75% | R,M(200С) <20% | 24hrs(23С)93% M(15-35C) 45-75% | |
| Volume resistivity, Ω·m, min. | 1,0×1012 | 1,0×1010 | 1,0×1011 |
| Dielectric strength, MW/m, min. | 75 | 35 | 35 |