Resins

Electrical Varnish and Silicone Resin

Dow Corning's range of electrical impregnating varnishes and silicone resin provides high thermal stability combined with excellent electrical resistance for use in motor stator coils, transformer windings, wire wound resistors, solenoids, generator coils, mica bonding, mica glass tape, and glass cloth.

Products such as DOW CORNING® 994 VARNISH, when used to impregnate glass cloth, provide long-term flexibility and electrical insulation, even when exposed to temperatures of 250°C for 1 year.

The use of silicone electrical impregnating varnish and silicone resin facilitates heat transfer, minimizes vibration and provides moisture resistance. These features lead to increased part life, reliability, and lower total cost.

Fiberglass Laminates:
Dow Corning® 2104 Resin - Silicone laminating resin with tolueneFor glasscloth, mica and similar laminates. Manufacture of flat laminates, tubes and molded parts. These laminates can be used in radomes, aircraft ductwork, coil forms, motor slot liners, arc barriers and many other items.

• Heat stable, low pressure thermosetting silicone resin
• Meets the requirements of AIEE Class 220 C insulating material
• Low dielectric losses
• Very stable electrical properties over a wide range of frequencies and temperatures, even when wet

Dow Corning® 2106 Resin - Silicone laminating resin with tolueneUsed in combination with an inorganic reinforcing material such as glass roving or asbestos, and quartz fibres for the manufacture of parts by low andhigh pressure forming techniques. Included in such methods are filament winding, vacuum bag molding, matched metal moulds or mandrel wrappingcombined with cellophane lagging techniques. Used to make parts such as laminated radomes, filament wound nose cones and pressure bottles, aircraft ductwork, thermal and arc barriers, covers and cases for high frequency equipment. Suggested thinners - Alcohols, chlorinated solvents, ketones, toluene, xylene and other aromatic hydrocarbons.

• Good physical and electrical stability over a wide range of temperatures, frequencies and humidities
• UV light, radiation and corona resistance
• Outstanding thermal stability

Mica Board Resin:
Dow Corning® 4-3136 Binder Resin - Silicone binder resin in a flake solid for mica boardsFor use in dry mixing operations and in soluble form used to bond composites for electrical and electronic applications such as mica sheet, mica board, glass cloth and mica/glass coating. Products in these categories are serviceable over wide temperature ranges.