Thermally-conductive electrically-insulating polymer-base material
First Claim
1. A polymer-based material comprising:
- a polymer matrix material; and
metal particles dispersed in the matrix material; and
a dielectric coating individually encapsulating each of the metal particles so as to electrically insulate the metal particles from each other, the dielectric coating being insoluble in the matrix material and having a softening temperature below the melting temperature of the metal particles.
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Accused Products
Abstract
An electrically-insulating polymer-based material with improved thermal conductvity so as to be suitable for use as an adhesive for mounting and conducting heat from electronic devices. The polymer-based material comprises metal particles dispersed in a matrix material. The metal particles are encapsulated by a dielectric coating so that they are electrically insulated from each other. The polymer-based material may also comprise dielectric particles dispersed in the matrix material and/or the dielectric coating for the purpose of further increasing the thermal conductivity of the polymer-based material. The material is also suitable for use as a potting compound or an encapsulation material for various electronic applications.
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Citations
20 Claims
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1. A polymer-based material comprising:
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a polymer matrix material; and
metal particles dispersed in the matrix material; and
a dielectric coating individually encapsulating each of the metal particles so as to electrically insulate the metal particles from each other, the dielectric coating being insoluble in the matrix material and having a softening temperature below the melting temperature of the metal particles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An adhesive material contacting a heat-generating electronic device, the adhesive material comprising:
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about 50 to about 80 weight percent of metal particles having a melting temperature above a maximum operating temperature of the heat-generating electronic device;
a dielectric polymer coating individually encapsulating each of the metal particles so as to electrically insulate the metal particles from each other, the polymer coating having a softening temperature of at least the maximum operating temperature of the heat-generating electronic device but below the melting temperature of the metal particles;
about 0.5 to about 10 weight percent of dielectric particles; and
the balance essentially a polymeric gel in which the metal particles and the dielectric particles are dispersed, the dielectric particles having a higher coefficient of thermal conductivity than the gel. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification