Graphite composite and electronic component
A graphite composite includes a graphite sheet having a void inside and a resin member. The void is partially filled by at least a part of the resin member in its entirety. The proportion of the resin member to the sum of the graphite sheet and the resin member is equal to or greater than 5% by mass. The graphite composite has a porosity equal to or greater than 50% by volume and equal to or less than 95% by volume.
1. A graphite composite comprising:
a graphite sheet having a void inside; and
a resin member, wherein:
the void is only partially filled by the resin member,
proportion of the resin member to a sum of the graphite sheet and the resin member is equal to or greater than 5% by mass and equal to or less than 75% by mass, and
the graphite composite has a porosity equal to or greater than 50% by volume and equal to or less than 95% by volume.
2. The graphite composite of claim 1 , wherein
the graphite sheet has a porosity equal to or greater than 80% by volume.
3. The graphite composite of claim 1 , wherein
the graphite composite has a compression ratio equal to or greater than 70% when a pressure of 600 kPa is applied to the graphite composite in a thickness direction.
4. The graphite composite of claim 1 , wherein
the resin member contains a gelatinous polymer.
5. The graphite composite of claim 1 , wherein
the graphite composite is a thermal interface material.
6. An electronic component comprising:
a heat generator;
a heat dissipator; and
the graphite composite of claim 1 interposed between the heat generator and the heat dissipator.
7. The electronic component of claim 6 , wherein
the graphite composite is directly in contact with each of the heat generator and the heat dissipator.
8. The electronic component of claim 6 , wherein
the graphite composite is subjected to pressure applied from the heat generator and the heat dissipator.
9. The electronic component of claim 6 , wherein
the heat generator is a semiconductor component and the heat dissipator is a heat sink.
10. A graphite composite comprising:
a graphite sheet having a void inside; and
a resin member, wherein:
the void is only partially filled by the resin member,
proportion of the resin member to a sum of the graphite sheet and the resin member is equal to or greater than 5% by mass,
the graphite composite has a porosity equal to or greater than 50% by volume and equal to or less than 95% by volume, and
the graphite composite has a compression ratio equal to or greater than 70% when a pressure of 600 kPa is applied to the graphite composite in a thickness direction.
11. The graphite composite of claim 1 , wherein
the void is filled with 1 vol % to 45 vol % by the resin member.
12. The graphite composite of claim 10 , wherein
the void is filled with 1 vol % to 45 vol % by the resin member.
13. The graphite composite of claim 10 , wherein
the resin member contains a gelatinous polymer.
14. The graphite composite of claim 10 , wherein
the graphite composite is a thermal interface material.
15. An electronic component comprising:
a heat generator;
a heat dissipator; and
the graphite composite of claim 10 interposed between the heat generator and the heat dissipator.
16. The electronic component of claim 15 , wherein
the graphite composite is directly in contact with each of the heat generator and the heat dissipator.
17. The electronic component of claim 15 , wherein
the graphite composite is subjected to pressure applied from the heat generator and the heat dissipator.
18. The electronic component of claim 15 , wherein
the heat generator is a semiconductor component and the heat dissipator is a heat sink.