Phenolic Cotton Cloth Laminated Sheets 

Electrotechnical sheet textolite or Phenolic Cotton Cloth Laminated Sheets is a laminated material made by hot pressing of cotton cloths impregnated with a thermosetting phenol-formaldehyde-based binder.

Due to the use of cotton cloths, the phenolic cotton cloth mixture has high compression strength and increased resilience, favorably lends itself to machining by drilling, cutting and forging. That is why the phenolic epoxy resin cotton cloth laminated sheets are widely used to make parts loaded with reversed electrical and mechanical stresses or working under friction (bushings, cams, etc.).

The textolite or phenolic cotton cloth sheets are used as insulating material for work in transformer oil and in the air at a normal relative humidity of the environment and at 50 Hz of frequency.

Long-term allowable working temperature: -65°C to +105°С.

Phenolic cotton cloth sheets benefits:

• very good mechanic and thermal properties,
• lasting operating temperature to 120°C,
• approved for oil and air,
• low friction coefficient,
• high creep resistance,
• vibration absorption properties,
• easy mechanical processing,
• electro-insulation properties

Types of phenolic epoxy cotton cloth / textolite sheets

• Phenolic cotton cloth sheets type A: has improved electrical properties and is mostly used as insulating material.
• Phenolic cotton cloth sheets type B: same as type A, but it has improved mechanical properties and is mostly used as a construction material.

×

 

NEMA, IEC, Mil Spec Material Comparative Table

1 – Comparable grades can vary slightly in specification based on test methods and specifications by the thickness

* Indicates IEC tube standard.