US 5,296,310 A · High conductivity hydrid material for thermal management

Abstract

A hybrid structural material combines high thermal conductivity and pre-determined mechanical properties compatible with adjacent or attached materials. It has three elements: (1) a non-structural, high thermal conductivity core material which defines the thermal conductivity of the hybrid structural material; (2) a pair of face sheets, which form opposing surfaces of the hybrid structural material and help to define its mechanical properties, disposed on opposite sides of the core material to create a face sheet-core material-face sheet sandwich construction; and (3) a frame substantially surrounding the core material and bonded to the face sheets for helping to define (along with the face sheets) the mechanical properties of the hybrid structural material. The interfaces between the face sheets and the core material allow physical contact, but prevent structural interaction, between the face sheets and the core material. Consequently, the hybrid structural material achieves a high fraction of the thermal conductivity of the core material while maintaining the thermal expansion (and other mechanical properties) of the face sheets and frame.

Claims21

Dependent claims

A hybrid structural material for thermal management including heat gathering and heat removal and allowing independent tailoring of mechanical properties, thermal expansion characteristics, and thermal conductivities, said hybrid structural material comprising:

a non-structural, high thermal conductivity core material defining the thermal conductivity of said hybrid structural material;
a pair of face sheets forming opposing surfaces of said hybrid structural material and helping to define the mechanical properties of said hybrid structural material, the first of said face sheets disposed on one side of said core material and the second of said face sheets disposed on the opposite side of said core material to create a face sheet-core material-face sheet sandwich construction;
a first interface between said first face sheet and said core material allowing physical contact between said first face sheet and said core material and allowing said first face sheet to slide over said core material on heating and cooling;
a second interface between said second face sheet and said core material allowing physical contact between said second face sheet and said core material and allowing said second face sheet to slide over said core material on heating and cooling;
and
a frame substantially surrounding said core material and attached, by one of bonding to and integrally forming with, said face sheets for helping to define the mechanical properties of said hybrid structural material.

3 more elements

A hybrid structural material for mounting electronic components and transferring heat generated by the electronic components and combining high thermal conductivity and mechanical properties independently selected to be compatible with adjacent electronic components, said hybrid structural material comprising:

a non-structural, high thermal conductivity core material chosen from the group consisting of highly ordered pyrolytic graphite, compression annealed pyrolytic graphite, and synthetic diamond, having an in-plane isotropic thermal conductivity greater than 750 W/m-K, and defining the thermal conductivity of said hybrid structural material;
a pair of face sheets forming opposing surfaces of said hybrid structural material and helping to define the mechanical properties of said hybrid structural material, the first of said face sheets disposed on one side of said core material and the second of said face sheets disposed on the opposite side of said core material to create a face sheet-core material-face sheet sandwich construction;
a first interface between said first face sheet and said core material allowing physical contact between said first face sheet and said core material and sallowing said first face sheet to slide over said core material on heating and cooling;
a second interface between said second face sheet and said core material allowing physical contact between said second face sheet and said core material and allowing said second face sheet to slide over said core material on heating and cooling;
and
a frame substantially surrounding said core material and bonded to said face sheets for helping to define the mechanical properties of said hybrid structural material.

3 more elements

Dependencies are inferred from the claim text.

High conductivity hydrid material for thermal management

Life of this patent

High conductivity hydrid material for thermal management

Life of this patent

Abstract

Claims21