Hydrophilic thermally conductive grease

Details Hydrophilic thermally conductive grease Hydrophilic thermally conductive grease

1991-04-22

1992-12-01

Willis, Jr., Prince

Compositions

Heat-exchange, low-freezing or pour point, or high boiling...

Organic components

252 28, 252572, 252 73, 361386, C09K 500, H02B 100

Patent

active

051678519

ABSTRACT:
A water washable thermally conductive grease useful for thermal coupling of electronic chips and heat sinks in electronic modules comprises a hydrophilic liquid polymer carrier, an antioxidant, and up to 90 weight percent of a microparticulate thermally conductive filler. In a preferred embodiment, the thixotropic dielectric composition further comprises an ionic surfactant to promote wetting/dispersion of the microparticulate filler. The thermally conductive grease is non-corrosive, resistant to shear induced phase destabilization and capable of being washed from module surfaces with aqueous solutions. Substitution of the present hydrophilic based greases for art-recognized solvent washable greases eliminates use of non-aqueous solvents in electronic module processing/reprocessing operations.

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"Materials/Processing Approaches to Phase Stabilization of Thermally Conductive Pastes", Anderson, Jr. and Booth, IEEE Transactions on Components, Hybrids, and Manufacturing Technology, vol. 13, No. 4, Dec. 1990.
Product advertisement/information sheet from Thermalloy, Inc., for Thermalcote II.

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