Jyoti Enterprises

Description: 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 :

• 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 (155 degreeC) 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 60 degreeC. To this premix Hardener 17055 and accelerator 1803M should be added last. The mixture is best processed at 60 degreeC 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 150 degreeC and polishing with silicone paste, thereafter, are best suited.

 

 

Description: Jyoti 1520 F is a solventless unfilled epoxy resin which in combination with Jyoti Hardener 1408 cures in to a hard mass. Jyoti Hardener 1408 is a low viscosity polyamide liquid hardener. The curing of the resin compounds is a polyaddition reaction which occurs at room temperature.

Areas of Application: Applications of Jyoti 1520 F in combination with Jyoti Hardener 1408 are casting, potting, sealing & binding of small & medium sized electrical and electronic components.

Properties of cured material: Jyoti 1520F + Jyoti Hardener 1408 system is characterized by low viscosity & fast curing at ambient temperature. The hard cured mass has good mechanical, electrical, & chemical properties. The resin system can be used with filler loading. The resin/hardener combination is used in electrical components of thermal class 120 (class E)

Application Method : Jyoti 1520 F & Jyoti Hardener 1408 should be mixed well at room temperature (20 to 40 degreeC) and used within pot life of mixture. The resin & hardener mixture is then use for intended application. Contaminated tools & containers can be cleaned with Thinner 221 before the resin system starts hardening.

Addition of fillers: Dried fillers such as silica, talc, dolomite, mica can be incorporated depending upon the performance requirement. Fillers shall be dried in oven at 150-200 degreeC for 4-6 hours to remove moisture. Wherever vacuum mixing facilities are available, fillers may be added to Jyoti 1520 F under vacuum preferably at 50-60 degree C. Mould used for casting must first be treat with a mould releasing agent. For this purpose, a baking finish of compound stored for 4-6 hours at 150°C & polishing with silicone paste, thereafter is best suited.

Jyoti 1520 is a solvent less unfilled epoxy resin which in combination with Jyoti 1758 cures in to a hard mass. Jyoti 1758 is a low viscosity, pale yellow, clear, polyamine based liquid. The curing of the resin compounds is a polyaddition reaction which occurs at room temperature.

Area of application

• Jyoti 1520 F + Jyoti 1758 system is suggested for: Binder resin for FRP lining & FRB component manufacture with excellent chemical resistant properties.
• Corrosion resistant finishing coat on mild steel & concrete structures.

Properties of material: Jyoti 1520F + Jyoti 1758 systems are characterized by low viscosity & fast curing at ambient temperature. The hard cured mass has good mechanical, electrical, & chemical properties. The resin system can be used with higher filler loading. The resin/hardener combination is used in electrical components of thermal class 120 (class E)

Application Method: Jyoti 1520 F & Jyoti 1758 should be mixed well at room temperature (20 to 40°C) and used within 30 to 40 minutes, depending upon the temperature and quantity of mixture. The resin & hardener mixture is then use for intended application. Contaminated tools & containers can be cleaned with Thinner 1221, before the resin system starts hardening.

Addition of Filler: Dried fillers such as silica, talc, dolomite, mica can be incorporated depending upon the performance requirement. Fillers shall be dried in oven at 150-200°C for 4-6 hours to remove moisture. Wherever vacuum mixing facilities are available, fillers may be added to JYOTI 1504 under vacuum preferably at 50-60°C. 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 150°C and polishing with silicone paste, thereafter, is best suited.

Description: 

• Jyoti 1762 designates a solvent-free, low viscous, epoxy based trickle resin. Furthermore, this combination is noted for its very good penetration, especially for windings with thin wires.

• Jyoti Hardener 1762 is a polyamine with a slightly yellow and transparent appearance and a low physiological effectiveness. Curing of the resin compound is a polyaddition reaction, which occurs under the effect of heat until a duroplastic cured material is produced. Polymerisation is initiated by mixing the two components and under the effect of heat proceeds as a rapid chain-reaction until a three-dimensionally cross-linked, duroplastic cured material is produced. The material does not contain by recipe substances listed in Restriction of Hazardous Substances (RoHS) Directive (2002/95/EC).

Areas of Application: Preferred applications for Jyoti 1605 trickle resin combined with Jyoti Hardener 1762:

• Repair shops
• Windings of machines with high chemical requirements
• Armatures of hand tools, household machines, universal motors, etc.

Properties of cured material: 

• After curing there is a hard cured material, which is noted for its exceptional adhesion to various materials. The cured material also displays very good resistance to tropical influences, solvents, weak lyesalkalies as well as oil and allows impregnated objects to be used even under extreme conditions.
• The high bonding strength of this combination imparts good mechanical stability to the impregnated windings. The combination JYOTI 1605 plus JYOTI HARDENER 1762 can be used for machines in thermal class B (130??C). Owing to low volume shrinkage this combination also cures without cracks in thick layers and can thus also be used to protect the windings, e.g. from carbon brush abrasion or abrasive dusts.
• Jyoti 1605 + Jyoti HARDENER 1762 due to its high bond strength offers increased resistance to centrifugal forces for large size armatures, thus preventing wire shifting & improving itslife. Application Method JYOTI 1605 in combination with JYOTI HARDENER 1762 can be processed in all conventional trickling plants. For a better penetration it is of advantage to reduce the viscosity of the resin by slightly raising the heating temperature. In accordance with the trickle impregnation principle, a thin stream of the activated resin is applied to the rotating and heated winding. The resin immediately adopts the temperature of the windings, becomes considerably more thin-fluid and distributes itself uniformly throughout the winding as a result of rotation and capillary forces. The pre- heating temperature of the objects should range between 800C and 1200C. Gelling and curing usually occurs in a circulating air oven or by current heating under rotation.
• The typical trickle process parameters are as follows :Pre-heating to 100-110°C for 2-15 min.,rotation 20-30 rpm, inclination angle 8-10° trickling and gelling at 90- 100°C curing at 120-130°C for 5-30.
• Batch no: 0212/19
• Tare weight: 92 gm 

Description: Jyoti 14401/ Jyoti Hardener 1200 is a two component, room temperature curing, polyurethane based casting resin system. Jyoti 14401 is a filled solventless, reddish brown coloured resin. Jyoti Hardener 1200 is an aromatic isocynate. Resin & hardener components on mixing cures by a polyaddition reaction at room temperature & gives flexible cured mass.

Areas of Application: Casting, potting and encapsulation of electrical & electronic components. Sealing of cable Joint on low & high voltage cables. Jyoti 14401 particularly has improved adhesion for cross linked polyethylene (XL PE) cables.

Properties of cured material:

• Jyoti 14401 + H 1200 cures with low volume shrinkage and low exotherm to give a stress-free cured mass. The elasticity of the cured casting resin produces extremely favourable temperature cycling behavior.
• The cured casting resin is further distinguished by good resistance to tracking. The resin system is suitable for use in electrical components working up to 120°C(Class E)

Application Method: The resin component Jyoti 14401 should be first stirred, since the filler on long storage has settling tendency. Jyoti 14401 & Jyoti Hardener 1200 should then be mixed in recommended proportion at room temperature (20 - 40°C) and used for casting or potting, within the potlife (usable life of mixture) Jyoti 14401 + Jyoti Hardener 1200 is a fast reactive system hence has limited pot life

Other Details

• Batch no: 0212/19
• Tare weight: 92 gm

Description: Jyoti 1760 is an off white colored filled, solvent less epoxy compound. Jyoti FIL 160 is a specially formulated and processed to obtain void free casting, potting encapsulated components.
It contains specially selected and processed fillers incorporated under vacuum mixing & has lower abrasive nature. It is ready to use filled system having low viscosity at processing temperature. Jyoti FIL 160 can be used with Jyoti Hardener 1760 as a heat curing system.

Jyoti FIL 160 in combination with Jyoti  Hardener 1760 has the following characteristics:

• Good adhesion to most organic and inorganic materials
• Good mechanical and electrical properties combined with good chemical and water resistance
• Fast curing
• Low coefficient of linear expansion
• Increased thermal conductivity.

Areas of Application: Jyoti FIL 160 in combination with Jyoti  Hardener 1760 is suitable for:

• Casting, potting and sealing of small & medium sized electrical electronic components.
• Casting of switch gear components and insulators
• Potting of instrument transformers
• Application where moderate curing temperatures are of advantage
• Topping of capacitors as sealant.

Properties of cured material: The cured mass of Jyoti FIL 160+ Jyoti  Hardener 1760 shows good mechanical, electrical & chemical properties. Because of special type of fillers in Jyoti FIL 160, the cured mass shows good thermal shock resistance, reduced shrinkage, low coefficient of thermal expansion & increased thermal conductivity. The combination of Jyoti FIL 160, Jyoti Hardener 1760 is used in thermal class 155 (class F) electrical components.

Application Method: Jyoti FIL 160 contains filler, which have tendency to settle on long storage. Jyoti FIL 160, should therefore, be stirred to a homogenous mixture, each time it is drawn from the container. Jyoti  Hardener 1760 should be melted separately. The molten Jyoti Hardener 1760 shall be added in Jyoti FIL 160, which is maintained at about 60-70°C. Both the components shall be mixed thoroughly. For longer pot life, cool the mixture to room temperature immediately

Addition of fillers: Dried, moisture free fillers such as silica, talc, dolomite, and mica can be incorporated depending upon the performance requirement. Fillers shall be dried in oven at 150-200°C for 4-6 hours to remove moisture. Wherever vacuum mixing facilities are available, fillers may be added to Jyoti FIL 160 under vacuum preferable at 50-60°C.