Method of producing an insulating sleeve of mica tape impregnated with thermosetting epoxide impregnating resin mixture and product thereof

Abstract

Abstract FLEXIBLE MICA TAPE FOR PRODUCING AN ELECTRICALLY INSULATING SLEEVE (JACKET) IMPREGENATED WITH A THERMOSETING MIXTURE OF EPOXIDE AND HARDNER COMPONENTS INCLUDES TWO SUPERIMPOSED SHEETS OF PLIABLE BASE MATERIAL WITH A LAYER OF MICA FLAKES DISPOSED THEREBETWEEN, A LIQUID BINDER APPLIED TO THE MICA FLAKES TO BIND THEM TOGETHER AND TO THE PLIABLE SHEET BASE MATERIAL, THE BINDER CONSISTING OF A SUBSTANCE SELECTED FROM COMPOUNDS CONTAINING EPOXIDE GROUPS OR GLYCIDYL GROUPS AND HAVING A MOLECULAR WEIGHT BETWEEN 300 AND 2000 AND OF AN ACCELERATOR SELECTED FROM THE GROUP CONSISTING OF DI- AND POLYTERTIARY ALIPHATIC-AROMATIC AMINES IN WHICH THE AMINE-NITROGEN IS DIRECTLY BOUND TO AN AROMATIC SYSTEM, FROM ORGANOZINC SALTS SOLUBLE IN ORGANIC SOLVENTS OR FORM ETHYLAMINEBORON FLUORIDE, PIPERIDINEBORON FLUROIDE AND DIMETHYLANILINEBORON FLUORIDE APPLIED TO THE MICA TAPES OF ACCELERATING ADDITION POLYMERIZATION OF THE THERMOSETTING EPOXIDE IMPREGNATING RESIN MIXTURES ON THE BASIS OF BI- AND HIGHER-FUNCTIONAL GLYCIDYL EHTERS OR EPOXIDES WITH ACID ANHYDRIDES AS HARDENER.

Inventors

• 👤 Willi Mertens

Bibliographic Details