Processing device and processing method of fiber containing resin

Patent metadata

Field	Value
Publication number	US-10167378-B2
Application number	US-201514677468-A
Country	US
Kind code	B2
Filing date	Apr 2, 2015
Priority date	Apr 8, 2014
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

A processing method according to the present embodiment is a processing method of a fiber containing resin in which fibers are contained in a matrix resin. The processing method includes: a step of thermal decomposition of the matrix resin in the fiber containing resin; and a step of stirring a resulting fibers bundle in solvent after the thermal decomposition. At the time of the thermal decomposition, the matrix resin may be carbonized in a dry distillation-carbonization furnace, for example.

First claim

What is claimed is:

1. A processing method of a fiber containing resin, comprising:
placing a fiber containing resin in a dry distillation-carbonization chamber, wherein the fiber containing resin contains fibers and a matrix resin;
sealing the dry distillation-carbonization chamber to shut air off;
heating the fiber containing resin in the absence of oxygen to thermally decompose and carbonize the matrix resin in the fiber containing resin to obtain a bundle of fibers;
immersing the resulting bundle of fibers in a solvent held in a container; and
stirring the resulting bundle of fibers to disentangle the fibers.

2. The processing method of the fiber containing resin, according to claim 1 , further comprising:
after stirring, transferring the fibers and solvent to a vessel; and
filtering the fibers and the solvent to separate the fibers from the solvent.

3. The processing method of the fiber containing resin according to claim 1 , wherein
the fiber containing resin is a carbon fiber reinforced plastic in which carbon fibers are contained in a matrix resin, the matrix resin being a main component of the carbon fiber reinforced plastic.

4. The processing method of the fiber containing resin, according to claim 1 , wherein the heating is performed in a range of approximate 400° C. to approximately 650° C.

5. The processing method of the fiber containing resin, according to claim 1 , wherein the bundle of fibers is stirred using a stirring plate.

6. The processing method of the fiber containing resin, according to claim 1 , wherein carbides generated by the decomposition of the matrix resin are attached to the fibers in the bundle of fibers.

7. The processing method of the fiber containing resin, according to claim 1 , wherein the fibers are carbon fibers.

8. The processing method of the fiber containing resin, according to claim 6 , wherein the carbides are removed from the surfaces of the fibers during stirring.

Assignees

• Toyota Motor Co Ltd

Inventors

• Urayama Hiroshi
• Takeuchi Takahiro
• Oshima Keiichiro
• Noda Ippei

Classifications

• C10B53/07

  {of solid raw materials consisting} of synthetic polymeric materials, e.g. tyres (recovery or working-up of waste materials of organic macromolecular compounds or compositions based thereon by dry-heat treatment for obtaining partially depolymerised materials C08J11/10; production of liquid hydrocarbon mixtures from rubber or rubber waste C10G1/10) · CPC title

• C08K7/06 Primary

  Elements · CPC title

• B29B2017/0293

  Dissolving the materials in gases or liquids · CPC title

• Y02W30/622

  Cross-Sectional Technologies · mapped topic

• C10B1/02

  Stationary retorts · CPC title