Thermally conductive plastic compositions, extrusion apparatus and methods for making thermally conductive plastics
AssigneeMomentive Performance Materials Inc.
InventorsChandrashekar Raman, Bei Xiang, Anand Murugaiah
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Abstract
A thermally conductive filler composition and a resin composition comprising such filler compositions. The filler composition comprises a blend of a boron nitride, a graphite, or a combination thereof, a talc, and optionally a silane. The filler composition can further comprise other filler components including, for example, wollastonite, calcium carbonate, or a combination thereof. The filler compositions can be added to a resin composition to provide a thermally conductive resin such as, for example, a thermally conductive plastic.
Claims40
A filler composition comprising a blend of:
- (a) a boron nitride, a graphite, or a combination thereof;
- (b) a talc having an aspect ratio of at least 40, and
- (c) a silane, wherein the silane is chosen from a thiocarboxylate silane, a blocked mercapto silane, or a combination thereof.
A thermally conductive composition comprising:
- a resin material;
- and
- a thermally conductive filler composition dispersed in the polymer material, wherein the thermally conductive filler composition comprises a blend of (a) a boron nitride, a graphite, or a combination thereof;
- (b) a talc having an aspect ratio of at least 40, and (c) a silane, wherein the silane is chosen from a thiocarboxylate silane, a blocked mercapto silane, or a combination thereof, and the thermally conductive composition has an in-plane thermal conductivity of about 2 W/mK or greater, a through-plane thermal conductivity of about 0.9 W/mK or greater, or both.
A filler composition comprising a blend of:
- (a) from about 5 weight percent to about 95 weight percent of a boron nitride, a graphite, or a combination thereof;
- (b) from about 5 weight percent to about 95 weight percent of a talc having an aspect ratio of at least 40;
- (c) from about 0.1 weight percent to about 6 weight percent of a silane, wherein the silane is chosen from a thiocarboxylate silane, a blocked mercapto silane, or a combination thereof;
- and
- (d) from about 0.1 weight percent to about 60 weight percent of wollastonite, calcium carbonate, or a combination thereof.
Dependencies are inferred from the claim text.