CALMICA ® 70 0866 consists of mica paper based on a uncalcined muscovite, impregnated with B-stage epoxy resin and a PET-film as carrier. CALMICA ® 70 0866 is a flexible mica paper compound which shows excellent process ability and high dielectric strength due to the PET-film. In order to prevent blocking, the flexibility of CALMICA ® 70 0867 is lower.
CALMICA ® 70 0866 is supplied polyethylene The insulation with with CALMICA ® 70 0866 is supplied without polyethylene release film.

Applications

CALMICA ® 70 0866 and CALMICA ® 70 0867 is used e.g. for the insulation of bars and coils of high voltage motors and generators where high resin flow (higher than e.g. CALMICA ® 70 900) is needed.  CALMICA ® 70 0866 and CALMICA ® 70 0867 are applied in full width (roll) or as tape.  Forming and curing is done in a hot press.

FormatRolls

‍maximum width 1000 mm

‍Tapes

‍from 10 mm width upwardStorability

Minimum 6 months at 20 °C
Minimum 12 months at 5 °C

Processing AdviceTemperature

‍130 – 180 °C

‍Pressure

‍2 – N/mm²

‍Time

‍8.0 – 0.5 hours

‍Example

‍1 hour at 160°C and 2 N/mm²

Fully cured status is achieved after 4 hours at 160°C

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