Methods for combining thermoplastic polymer with carbon nanomaterial

Patent metadata

Field	Value
Publication number	US-10676595-B2
Application number	US-201916274652-A
Country	US
Kind code	B2
Filing date	Feb 13, 2019
Priority date	Sep 2, 2013
Publication date	Jun 9, 2020
Grant date	Jun 9, 2020

Abstract

Disclosed are methods for combining a thermoplastic polymer with a carbon nanomaterial. More particularly, A method of preparing a thermoplastic polymer combined with a carbon nanomaterial includes combining the carbon nanomaterial with a pyrene derivative by stirring 1 to 40 wt % of a carbon nanomaterial, 1 to 40 wt % of a polycyclic aromatic hydrocarbon derivative, and 20 to 98 wt % of a solvent with a mechanical mixer. According to the present invention, the resulting materials exhibit excellent tensile strength, tensile modulus, electromagnetic shielding effects and anti-static effects, and the like.

First claim

We claim:

1. A method of preparing a thermoplastic polymer combined with a carbon nanomaterial, the method comprising:
stirring 1 to 40 wt % of a carbon nanomaterial, 1 to 40 wt % of a polycyclic aromatic hydrocarbon derivative, and 20 to 98 wt % of a solvent with a mechanical mixer; and
coating a pellet of the thermoplastic polymer with the carbon nanomaterial combined with the polycyclic aromatic hydrocarbon derivative.

2. A method of preparing a thermoplastic polymer combined with a carbon nanomaterial, the method comprising preparing a pellet of the thermoplastic polymer coated with a combined body of a polycyclic aromatic hydrocarbon derivative and a carbon nanomaterial by stirring 0.1 to 15 wt % of the carbon nanomaterial, 0.025 to 30 wt % of the polycyclic aromatic hydrocarbon derivative, 10 to 99.775 wt % of the polymer pellet, and 0.1 to 45 wt % of a solvent.

3. The method according to claim 1 , further comprising melting and extruding the coated polymer pellet.

4. The method according to claim 1 , wherein the carbon nanomaterial is at least one selected from the group consisting of carbon nanotubes, graphene, and carbon nano fibers.

5. The method according to claim 1 , wherein the polycyclic aromatic hydrocarbon derivative comprises 2 to 5 fused benzene rings.

6. The method according to claim 1 , wherein the polycyclic aromatic hydrocarbon derivative comprises a functional group reacting with the polymer.

7. The method according to claim 6 , wherein the functional group is at least one selected from the group consisting of trialkyl azanium groups, carboxylic acid groups, acylchloride groups, hydroxyl groups, amide groups, and ester groups.

8. The method according to claim 1 , wherein the thermoplastic polymer is at least one selected from the group consisting of amide-based polymers, ester-based polymers, acrylate-based polymers, polyketone-based polymers, vinyl-based polymers, styrene-based polymers, polyolefins, and polyphenylene ethers.

9. The method according to claim 1 , wherein the solvent is at least one selected from the group consisting of water, ethanol, methanol, and THF.

10. The method according to claim 1 , wherein the solvent is at least one selected from the group consisting of chloroform, toluene, and benzene.

Assignees

• Lg Chemical Ltd

Inventors

• Choi Yeon Sik
• Lee Su Min
• Yun Chang Hun
• Choi Gi Dae

Classifications

• C08J2377/00

  Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers · CPC title

• B29B2009/163

  Coating, i.e. applying a layer of liquid or solid material on the granule · CPC title

• C08K5/09

  Carboxylic acids; Metal salts thereof; Anhydrides thereof · CPC title

• C08L77/06

  Polyamides derived from polyamines and polycarboxylic acids (C08L77/10 takes precedence) · CPC title

• C08K3/041

  Carbon nanotubes · CPC title