Curable silicone gum thermal interface material
AssigneeTyco Electronics Corporation
InventorsMark W. Ellsworth, Miguel A. Morales, Richard B. Lloyd
Life of this patent
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Abstract
A high viscosity, cured silicone-based thermal interface material is disclosed. The thermal interface material adapts readily to conform to heat transfer surfaces. For example, the thermal interface material is placed between a heat source, such as a central processing unit (CPU) of a computer, and a heat sink attached to the CPU. In use, the thermal interface material absorbs the heat from the CPU and transfers the heat to the heat sink, thereby cooling the CPU. The material has high rates of heat transfer, as measured by low thermal resistance and high thermal conductivity.
Claims29
A high viscosity, cured thermal interface material comprising:
- from about thirty-three to about sixty-six parts by weight of a vinyl-terminated polydimethylsiloxane having a functionality of two or less;
- from about one to about sixty-six parts by weight of a hydride terminated polydimethylsiloxane having a functionality of two or less;
- from about zero to about twenty parts by weight of a coupling agent;
- and
- from about zero to about two parts by weight of a catalyst.
A high viscosity, cured silicone-based thermal interface material, comprising:
- from about thirty-three to about sixty-six parts by weight of a vinyl-terminated polydimethylsiloxane having a functionality of two or less;
- from about one to about sixty-six parts by weight of a hydride-terminated polydimethylsiloxane having a functionality of two or less;
- from about zero to about twenty parts by weight of a coupling agent;
- and
- from about zero to about two parts by weight of platinum-divinyltetramethyldisiloxane complex catalyst.
A method of making a silicone-based thermal interface material, the method comprising:
- providing from about thirty-three to about sixty-six parts by weight of a vinyl-terminated polydimethylsiloxane having a functionality of two or less;
- providing from about one to about sixty-six parts by weight of a hydride terminated polydimethylsiloxane having a functionality of two or less;
- providing from about zero to about twenty parts by weight of a coupling agent;
- providing from about zero parts to about five parts by weights of a curing decelerator;
- providing from about zero to about two parts by weight of a catalyst;
- combining said vinyl-terminated polydimethylsiloxane, said hydride terminated polydimethylsiloxane, said coupling agent, said curing decelerator, and said catalyst to form a mixture;
- forming a film from the mixture;
- and
- curing the film.
Dependencies are inferred from the claim text.