Small-fraction nanoparticle resin for electric machine insulation systems
AssigneeThe Timken Company
InventorJan de Swardt
Life of this patent
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Abstract
An insulation system of a current-carrying conductor of an electric machine. The insulation system comprises a thermally curable resin including a polymer resin matrix and a nanoparticulate filler. A mica paper or mica tape is impregnated with the thermally curable resin. The thermally curable resin comprises nanoparticulate filler, the total quantity of nanoparticulate filler being at least 0.1 wt % and not more than 0.5 wt %.
Claims6
An insulation system of a current-carrying conductor of an electric machine, the insulation system comprising:
- a thermally curable resin including a polymer resin matrix, one or both of a hardener and a curing initiator, and a nanoparticulate filler, wherein the polymer resin matrix comprises epoxy resin and the nanoparticulate filler consists of metal oxide or semi-metal oxide particles having an average size of 20 nm or less;
- and
- a mica paper or mica tape impregnated with the thermally curable resin,
- wherein the total quantity of nanoparticulate filler in the thermally curable resin is 0.1 wt %.
A method for producing an insulation system on a current-carrying conductor within an electric machine, the method comprising:
- providing a mica paper or mica tape;
- wrapping the current-carrying conductor with the mica paper or mica tape;
- providing a resin comprising a polymer resin matrix, one or both of a hardener and a curing initiator, and a nanoparticulate filler thoroughly mixed therein, wherein the polymer resin matrix comprises epoxy resin and the nanoparticulate filler consists of metal oxide or semi-metal oxide particles having an average particle size of 20 nm or less, the total quantity of nanoparticulate filler in the resin being 0.1 wt %;
- fully impregnating the mica paper or mica tape with the resin;
- and
- thermally curing the resin that impregnates the mica paper or mica tape.
Dependencies are inferred from the claim text.