Jyoti 1520F/Hardener 17055/ Accelerator 1803M is a three component heat curing epoxy system. Jyoti 1520 F is a solventless liquid resin of medium viscosity based on bisphenol A.
Hardener 17055 is yellow coloured low viscosity, modified carbolic anhydride type hardener.
Accelerator 1803 M is amine based low viscosity, dark brown liquid. For most application addition of 2 or 3 more components such as flexibilizer EP09, silica filler & Jyoti (brown) are employed. The curing of epoxy system takes place at elevated temperature by poly addition reaction. The resultant cured mass is hard with excellent electrical insulation, mechanical and thermal properties.
AREAS OF APPLICATION - HARDENER 17055 HARDNER
- Casting &potting of high voltage coils, transformers and switchgear.
- Impregnation of instrument transformers.
- Binder for glass fibre fabric and filament wound tubes & laminates.
PROPERTIES OF CURED MATERIAL
Jyoti 1520F system cures into hard & tough mass after curing at elevated temperature. The cured mass has good adhesion to metals and most plastics. The addition of fillers like silica. Alumina etc. improve heat conduction, mechanical properties and dimensional stability. The cured mass has excellent dielectric properties and track resistance. The resin system, in combination with other heat insulation material, is suitable for class F (155ºC) components & machines.
APPLICATION METHOD
Jyoti 1520F system is best processed at warm temperatures of 50-600C It is best to make a premix of Jyoti 1520F + Flexibilizer EP09 + silica or other filler + Jyoti (brown) or other colour paste at 60ºC. To this premix Hardener 17055 and accelerator 1803M should be added last. The mixture is best processed at 60ºC for sufficiently long pot life and low processing viscosity. Mixing ratio as specified must be followed for best results.
Mould used for casting must first be treats with a mould releasing agent. For this purpose, a baking finish of compound stored for 4-6 hours at 150ºC and polishing with silicone paste, thereafter, are best suited.
