Methods of using N-containing compounds with carbon black to replace pan and form carbon fibers

Patent metadata

Field	Value
Publication number	US-10442934-B2
Application number	US-201515537241-A
Country	US
Kind code	B2
Filing date	Dec 18, 2015
Priority date	Dec 19, 2014
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

A method and precursor for making carbon fibers and the like comprising carbon black modified with at least one cyclic compound promoter. A source of the carbon black may be recycled materials such as recycled tires or recycled plastics. The carbon black is modified by attaching at least one cyclic compound promoter to the outer periphery of the carbon black.

First claim

What is claimed is:

1. A method of making carbon fibers by providing a precursor used to make the carbon fiber, said precursor comprising carbon black modified with at least one cyclic compound promoter and PAN, said at least one cyclic compound promoter is a nitrogen (N)-containing compound wherein said precursor contains around 7 parts PAN and around 1 part carbon black.

2. The method of claim 1 wherein said N-containing compound contains cyano-groups that simulate the cyano group cyclization process.

3. The method of claim 1 wherein the precursor further comprises methyl acrylate, itaconic acid and fumaronitrile.

4. The method of claim 3 wherein the ratio of methyl acrylate to itaconic acid and fumaronitrile is ˜0.6:˜0.1˜1.

5. A method of making carbon fibers by providing a precursor used to make the carbon fiber, said precursor comprising carbon black modified with at least one nitrogen (N)-containing compound, PAN, methyl acrylate, itaconic acid and fumaronitrile.

6. The method of claim 5 wherein said N-containing compound is from the group including organics containing di-cyano groups, cyanamide, carbodiimides, pyridine, 2,2-bipyridine, ammonia, hydrazine, 2-aminopyridine, 2-cyanopyridine, and related compounds.

7. The method of claim 6 wherein said N-containing compound contains cyano-groups that simulate the cyano group cyclization process.

Assignees

• Stc Unm

Inventors

• Kemp Richard Alan
• Taha Mahmoud Reda

Classifications

• D01F9/21

  from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• C09C1/48

  Carbon black · CPC title

• C09C1/482 Primary

  Preparation from used rubber products, e.g. tyres (recovery of plastics or other constituents of waste material containing plastics B29B17/00) · CPC title

• D01F9/1275

  Acetylene · CPC title

• D01F9/225

  from stabilised polyacrylonitriles · CPC title