US 11,121,599 B2 · Slot sealing compound, slot seal, and method for producing a slot seal

Abstract

The invention relates to a slot sealing compound (7) for an electrical machine that comprises at least one slot (2) with a slot opening (5) for receiving an electrical conductor arrangement (3). Said slot sealing compound (7) contains a magnetic filler material, particularly a soft-magnetic filler material, and a reactive resin mixture that comprises at least one resin component. In the interests of improving storage stability for said slot sealing compound (7), the components thereof are selected to be suitable for cationic polymerisation. A catalyst, provided to accelerate the cationic polymerisation of said reactive resin mixture, is also added to said slot sealing compound (7).

Claims16

Dependent claims

A slot sealing compound for filling into a slot opening of an electric machine that accommodates an electric conductor arrangement for the electric machine, comprising:

a reactive resin mixture containing at least one resin component;
a catalyst configured to accelerate a cationic polymerization of the reactive resin mixture;
a magnetic filler material;
and an additive configured to bind or inhibit the catalyst at a temperature of up to 45° C. so as to prevent the catalyst from accelerating the cationic polymerization of the reactive resin mixture and thereby render the slot sealing compound storage stable up to a temperature of 45° C., said additive is selected from the group consisting of aluminum trihydrate, magnesium hydroxide and their salts.

1 more element

Dependencies are inferred from the claim text.

Slot sealing compound, slot seal, and method for producing a slot seal

Life of this patent

Slot sealing compound, slot seal, and method for producing a slot seal

Life of this patent

Abstract

Claims16