Colloidal insulating and cooling fluid

Details Colloidal insulating and cooling fluid Colloidal insulating and cooling fluid

1997-07-14

1999-01-26

Bonner, Melissa

Compositions

Magnetic

Flaw detection or magnetic clutch

252 6254, 252 6251R, 252308, 252309, 252311, 2523131, 62 31, 361699, 361698, H01F 144, H05K 500, F25B 2100, B01J 1300

Patent

active

058634550

ABSTRACT:
Colloidal fluids having improved insulating and/or cooling properties. Embodiments of the invention involve colloidal fluids which comprise a carrier liquid and a dispersed phase of non-metallic particles, wherein the colloidal fluid has a saturation magnetization of less than about 50 Gauss. The compositions may be employed to insulate and/or cool electromagnetic devices, including high power devices, such as power transformers.

REFERENCES:
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patent: 5462685 (1995-10-01), Raj et al.
Publication entitled, "Transformation" (for employees of the ABB Power Transformer Division): Issue 3, Jan. 29, 1990; Issue 7, Mar. 26, 1990, Issue 11, May 21, 1990; Issue 12, Jun. 4, 1990, Issue 13, Jun. 13, 1990; Issue 14, Jul. 2, 1990, Issue 15, Jul. 16, 1990; Issue 24, Nov. 19, 1990, Issue 25, Dec. 3, 1990; Issue 32, Mar. 11, 1991, Issue 34, Apr. 8, 1991.
B. Berkovsky and V. Bashtovoy, Eds., Magnetic Fluids and Applications Handbook, Begall Publishing House, New York, New York (1996), no month.

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