EPOXYLITE E234

Harmonization Code : 3910.00.00.90 | Silicones in Primary Forms; Others

EPOXYLITE E234

Main features

  • Low-Temperature Trickle Impregnation
  • 15-25 Minute Gel Window
  • Class 155 Electrical Insulation

Product Description

EPOXYLITE E234 Two-Component Epoxy Impregnating Resin is a 100% solids, two-component epoxy system for low-temperature trickle impregnation of motor and transformer windings. The E234 resin and C234 hardener mix at 100:20 by weight or 100:22.3 by volume, producing a typical mixed viscosity of 800 to 1,800 cP and a 15 to 25 minute gel time. The cured system is associated with Class 155 electrical insulation and typical dielectric strength of 1,200 volts/mil. Supported uses include high-speed armatures, appliance motors, transformers, and other high-speed rotating equipment.

Key features

  • Low-temperature trickle impregnation: The mixed system is formulated for motor and transformer winding impregnation with a 15 to 25 minute gel time.
  • Controlled component mixing: The documented mix ratio is 100:20 by weight or 100:22.3 by volume.
  • Class 155 electrical insulation: Typical cured data include Shore D 87 and dielectric strength of 1,200 volts/mil.

Applications

  • Trickle impregnation of motor windings
  • Trickle impregnation of transformer windings
  • High-speed armatures
  • Appliance motors and high-speed rotating equipment
Product Family

EPOXYLITE E234

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TDS, SDS & Technical Documents

Technical Specifications

Physical Properties
Viscosity
Viscosity is a measurement of a fluid’s resistance to flow. Viscosity is commonly measured in centiPoise (cP). One cP is defined as the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP. A product like honey would have a much higher viscosity -around 10,000 cPs- compared to water. As a result, honey would flow much slower out of a tipped glass than water would. The viscosity of a material can be decreased with an increase in temperature in order to better suit an application
800-1800 mPa.s
Viscosity (Part A)
1000-2000 mPa.s
Thermal Properties
Flash Point
The flashpoint of a solvent is the lowest possible temperature at which it can vaporize to form an ignitable vapor. Flashpoint is often confused with “autoignition temperature”, which is the temperature at which a solvent ignites without an ignition source.
94 °C
Chemical Properties
Water Absorption
0.2 %
Electrical Properties
Dielectric Strength
Dielectric strength is measured in kV per mm and is calculated by the Breakdown voltage divided by the thickness of the tested material. Those two properties go hand in hand and while Breakdown voltage is always thickness dependent, dielectric strength is a general material property. As an example, the dielectric strength of Polyimide is 236 kV/mm. If we place 1mm of Polyimide between two electrodes, it will act as an insulator until the voltage between the electrodes reaches 236 kV. At this point it will start acting as a good conductor, causing sparks, potential punctures and current flow.
47.2 kV/mm
Volume Resistivity
Volume resistivity, also called volume resistance, bulk resistance or bulk resistivity is a thickness dependent measurement of the resistivity of a material perpendicular to the plane of the surface.
8.0 x 10^14 Ohms⋅cm

Additional Information

Technical properties

As-supplied / before-processing properties

Typical component and mixed-system values for the E234 resin and C234 hardener before cure.

Property Value Unit Method / condition
Resin viscosity 1,000 to 2,000 cP E234 resin as supplied
Hardener viscosity 100 to 500 cP C234 hardener as supplied
Mix ratio by weight 100:20 - E234 resin:C234 hardener
Mix ratio by volume 100:22.3 - E234 resin:C234 hardener
Mixed viscosity 800 to 1,800 cP Mixed system
Gel time 15 to 25 min Mixed system
Technical properties

After-processing / final-state properties

Typical final-state values for the cured impregnating-resin system.

Property Value Unit Method / condition
Thermal class 155 deg C Electrical insulation classification stated for the system
Post-cure 15 min At 100 deg C
Shore D hardness 87 - Typical cured value
Dielectric strength 1,200 volts/mil Typical cured value
Volume resistivity 8.0 x 10^14 ohm cm Typical cured value

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