JYOTI CPV is a alkyd phenolic based core plate varnish. The product consists of a polymeric binder,After evaporation of the solvent by means of a conversation baking oven, the resin reacts under application of heat to form a uniform cured film. The material does not contain by recipe substances listed in Restriction of Hazardous Substances (RoHS) Directive (2002/95/EC).
AREAS OF APPLICATION : JYOTI 14000 (CORE PLATE BAKING VARNISH)
JYOTI CPV is suitable for insulation of hot or cold rolled core sheets. Punched laminations are suitable for electrical machines such as motors, fans, hydro and turbo generators etc.
PROPERTIES OF CURED MATERIAL
The cured film has remarkably good adhesion and punching quality. A temperature index of 155 enables the varnish JYOTI CPV to be used for machines in thermal class F (1550C).
APPLICATION METHOD
JYOTI CPV is applied with the help of rubber rollers in a conveyorised oven. The thickness of the varnish film is adjusted with the help of roller pressure and thinning the varnish with JYOTI Thinner CPV. The curing of varnish film takes place progressively in a heated oven, where temperature is maintained in the range of 350-4500C.
For varnish film of 5 to 10 μm, curing period of 2 to 3 minutes depending on the length of heating oven is necessary for achieving required electrical and mechanical properties. Good exhaust of volatile solvent vapors from curing oven is necessary.
