Structured resin systems with high thermal conductivity fillers
View Patent ↗In one embodiment the present invention provides for a high thermal conductivity highly structured resin that comprises a host highly structured resin matrix, and a high thermal conductivity filler 30 . The high thermal conductivity fillers are from 1-1000 nm in length, and high thermal conductivity fillers have an aspect ratio of between 3-100. Particular highly structured highly structured resins include at least one of liquid crystal 40 polymers, interpenetrating networks, dendrimer type matrices, expanding polymers, ladder polymers, star polymers and structured organic-inorganic hybrids 60.
1. A continuous organic-inorganic highly structured resin comprising:
a host highly structured resin network comprising a plurality of mesogenic groups; and
inorganic high thermal conductivity fillers being evenly dispersed in said host highly structured resin network, wherein said inorganic high thermal conductivity fillers comprise surface functional groups that covalently bond said high thermal conductivity fillers directly to said host highly structured resin network;
wherein said high thermal conductivity fillers have a length of between 1-1000 nm and an aspect ratio of 10-50;
wherein said plurality of mesogenic groups and said thermal conductivity fillers are in substantial alignment with one another in a uniform direction; and
wherein the continuous organic-inorganic highly structured resin comprises minimal to no interfacial gaps or microvoids formed therein and is effective to reduce an amount of phonon scattering and to increase an amount of phonon transport in the resin.
2. The continuous organic-inorganic highly structured resin of claim 1 , wherein said functional groups comprise at least one of hydroxyl, carboxylic, amine, epoxide, silane or vinyl groups.
3. The continuous organic-inorganic highly structured resin of claim 1 , wherein said host highly structured resin network comprises at least one of epoxy, polyimide epoxy, liquid crystal epoxy or cyanate-ester.
4. The continuous organic-inorganic highly structured resin of claim 1 , wherein host highly structured resin network comprises liquid crystal polymers.
5. The continuous organic-inorganic highly structured resin of claim 1 , wherein the plurality of mesogenic groups are from 0.5-100 nm in length.
6. The continuous organic-inorganic highly structured resin of claim 1 , wherein said high thermal conductivity fillers are selected from at least one of oxides, nitrides, or carbides.
7. The continuous organic-inorganic highly structured resin of claim 6 , wherein said at least one of said oxides, nitrides, and carbides comprise at least one of Al2O3, AlN, MgO, ZnO, BeO, BN, Si3N4, SiC or SiO2 with mixed stoichiometric and non-stoichiometric combinations.
8. The continuous organic-inorganic highly structured resin of claim 1 , wherein said continuous organic-inorganic structured resin comprises a maximum of 60% by volume of said high thermal conductivity fillers.
9. The continuous organic-inorganic highly structured resin of claim 8 , wherein said continuous organic-inorganic highly structured resin comprises a maximum of 35% by volume of said high thermal conductivity fillers.
10. The continuous organic-inorganic highly structured resin of claim 8 , wherein said high thermal conductivity fillers have a dimension of from 1 to 50 nm that is of the order or less than a polymer or segmental length of said host highly structured resin network.