Composite insulation tape with loaded HTC materials
AssigneeSiemens Power Generation, Inc.
InventorsJames Smith, Gary Stevens, John Wood
Life of this patent
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Abstract
In one embodiment of the present invention as used for impregnating a composite tape (56) with HTC particles provides for permeating a fabric layer (51) of the composite tape with HTC particles and impregnating an impregnating resin into the composite tape through the fabric layer (51). At least 5% of the HTC particles permeated into the fabric layer are carried out of the fabric layer and into a mica layer (52) bound to the fabric layer by the impregnating resin. In some embodiments the impregnating resin itself contains HTC particles.
Claims20
A method for impregnating a composite tape with HTC particles comprising:
- permeating a fabric layer of said composite tape with HTC particles;
- impregnating an impregnating resin into said composite tape through said fabric layer;
- wherein at least 1% of said HTC particles permeated into said fabric layer are carried out of said fabric layer and into a mica layer bound to said fabric layer by said impregnating resin.
A method for impregnating a composite tape with HTC particles comprising:
- dry packing a fabric layer of said composite tape with HTC particles, wherein said HTC particles comprise a mixture of smaller and larger particles;
- sealing exposed surfaces of said fabric layer with a resin layer;
- and
- impregnating said composite tape with an impregnating resin;
- wherein said resin layer is soluble in said impregnating resin;
- wherein said impregnating resin flows from said fabric layer into a mica layer bound to said fabric layer;
- wherein at least 5% of said HTC particles in said fabric layer is carried by said impregnating resin into said mica layer, and where said smaller particles tend to be carried further than said larger particles, and wherein approximately 10% by volume of said HTC particles remain at the fabric layer/mica layer interface whereby creating a region with a higher concentration of HTC particles.
A method for impregnating a mica layer within a composite tape, comprising:
- joining a mica layer to at least one fabric layer;
- packing said fabric layer with HTC particles;
- sealing exposed surfaces of said fabric layer with a resin layer;
- and
- impregnating said composite tape with an impregnating resin;
- wherein at least 5% of said HTC particles in said fabric layer is carried by said impregnating resin into said mica layer.
Dependencies are inferred from the claim text.