Composite materials systems

Patent metadata

Field	Value
Publication number	US-11352481-B2
Application number	US-202016784146-A
Country	US
Kind code	B2
Filing date	Feb 6, 2020
Priority date	Feb 28, 2018
Publication date	Jun 7, 2022
Grant date	Jun 7, 2022

Abstract

Methods include producing tunable carbon structures and combining carbon structures with a polymer to form a composite material. Carbon structures include crinkled graphene. Methods also include functionalizing the carbon structures, either in-situ, within the plasma reactor, or in a liquid collection facility. The plasma reactor has a first control for tuning the specific surface area (SSA) of the resulting tuned carbon structures as well as a second, independent control for tuning the SSA of the tuned carbon structures. The composite materials that result from mixing the tuned carbon structures with a polymer results in composite materials that exhibit exceptional favorable mechanical and/or other properties. Mechanisms that operate between the carbon structures and the polymer yield composite materials that exhibit these exceptional mechanical properties are also examined.

First claim

What is claimed is:

1. A composite material comprising:
a polymer; and
a graphene-containing material having a specific surface area (SSA) of at least approximately 60 m 2 /g, at least 10% of the SSA combined into the polymer, wherein the composite material has a glass transition temperature that is at least 20% greater than a glass transition temperature of the polymer in absence of the graphene-containing material.

2. The composite material of claim 1 , wherein the composite material has a storage modulus of at least approximately 2.5 GPa at approximately 50 degrees Celsius.

3. The composite material of claim 1 , wherein the composite material has a maximum tan delta of about 1.5.

4. The composite material of claim 1 , wherein the composite material has a maximum tan delta of greater than 0.25.

5. The composite material of claim 1 , wherein the composite material has a 30% higher storage modulus than the polymer in absence of the graphene-containing material.

6. The composite material of claim 1 , wherein the composite material has a glass transition temperature higher than approximately 30 degrees Celsius.

7. The composite material of claim 1 , wherein the composite material has a glass transition temperature that is at least the glass transition temperature of the polymer independent of the graphene-containing material.

8. The composite material of claim 1 , wherein the graphene-containing material has a fractal dimension greater than approximately 1.0.

9. The composite material of claim 1 , wherein the graphene-containing material has an individual platelet layer count includes between approximately 2 layers and approximately 25 layers.

10. The composite material of claim 1 , wherein the graphene-containing material has D/G ratio of Raman band intensities of 0.3-1.

11. The composite material of claim 1 , wherein the graphene-containing material has oxygen-containing species of less than approximately 5% and greater than approximately 0.2%.

12. The composite material of claim 1 , wherein the graphene-containing material has oxygen-containing species of less than approximately 10%.

13. The composite material of claim 1 , wherein the graphene-containing material has particle sizes that includes between smaller than approximately 0.1 and approximately 1.0 micron.

14. The composite material of claim 1 , wherein the graphene-containing material has particle sizes including between approximately 200 nanometers and approximately 5 microns.

Assignees

• Lyten Inc

Inventors

• Stowell Michael W
• Anzelmo Bryce H
• Lanning Bruce
• Cook Daniel
• Rogojina Elena
• Vanheusden Karel
• Hines Margaret
• Baldwin John
• Kc Chandra B

Classifications

• H01J37/32229 Primary

  Waveguides · CPC title

• C08K3/04

  Carbon · CPC title

• C01B2204/30

  Purity · CPC title

• C01B32/194

  After-treatment · CPC title

• C01P2004/24

  Nanoplates, i.e. plate-like particles with a thickness from 1-100 nanometer · CPC title