MULTI-PHASE ELASTOMERIC THERMALLY CONDUCTIVE MATERIALS

摘要

Thermally conductive materials comprising a non-polar elastomer, a polar elastomer, and a thermally conductive filler. The polar elastomer and non-polar elastomer are sufficiently immiscible to form a polar elastomer phase and a non-polar elastomer phase. The thermally conductive filler is concentrated in an amount of at least 60 volume percent of the total filler amount in either the non-polar elastomer phase or the polar elastomer phase. The thermally conductive material has a tensile modulus less than 200 MPa. Such thermally conductive materials can be employed in a variety of articles of manufacture as thermal interface materials.

主权项

1. A thermally conductive material, comprising:
(a) a non-polar elastomer; (b) a polar elastomer; and (c) a thermally conductive filler, wherein said non-polar elastomer and said polar elastomer are sufficiently immiscible to be present as a multi-phase system having a non-polar elastomer phase and a polar elastomer phase, wherein at least 60 volume percent (“vol %”) of said thermally conductive filler is located in one of said non-polar elastomer phase or said polar elastomer phase, wherein said thermally conductive material has a tensile modulus of less than 200 megapascals (“MPa”).