Carbon fiber-reinforced plastic material with nanofiller mixed therein, and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-10017630-B2
Application number	US-201414332530-A
Country	US
Kind code	B2
Filing date	Jul 16, 2014
Priority date	Jan 17, 2012
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

Provided is a carbon fiber reinforced plastic material having excellent rigidity, flexibility and improved heat resistance and a method of manufacturing the same. The present invention provides a carbon fiber reinforced plastic material containing 2 parts by mass or more and 30 parts by mass or less of a nanofiller with respect to a total of 100 parts by mass of 30 parts by mass or more and 90 parts by mass or less of a polymer material and 70 parts by mass or more and 10 parts by mass or less of carbon fibers, an average aspect ratio (length/width) of the nanofiller being 20 or more. The average aspect ratio (length/width) of the nanofiller may also be 50 or more.

First claim

The invention claimed is:

1. A carbon fiber reinforced plastic material comprising:
2 parts by mass or more and 30 parts by mass or less of a layered silicate with respect to a total of 100 parts by mass of 30 parts by mass or more and 90 parts by mass or less of polyamide and 70 parts by mass or less and 10 parts by mass or more of carbon fibers, a width of the layered silicate being about 2 nm or less,
wherein the layered silicate and the carbon fibers are dispersed in a non-oriented state in the polyamide in a transmission electron microscope (TEM) observation of an ultrathin section of the carbon fiber reinforced plastic material, and
the layered silicate is in the shape of hair.

2. The carbon fiber reinforced plastic material according to claim 1 , wherein a modulus of elongation of carbon fiber reinforced plastic material in accordance to the method defined in ASTM D638 is 6000 MPa or more.

3. The carbon fiber reinforced plastic material according to claim 1 , wherein the layered silicate dispersed in the carbon fiber reinforced plastic material has an average value less than 6 layers when 20 layered silicates are randomly extracted from a TEM photograph and the number of layers is counted.

4. An automobile part comprising the carbon fiber reinforced plastic material according to claim 1 .

5. A sports part comprising the carbon fiber reinforced plastic material according to claim 1 .

6. An information terminal device part comprising the carbon fiber reinforced plastic material according to claim 1 .

7. A carbon fiber reinforced plastic material comprising:
2 parts by mass or more and 30 parts by mass or less of a layered silicate with respect to a total of 100 parts by mass of 30 parts by mass or more and 90 parts by mass or less of polyamide and 70 parts by mass or less and 10 parts by mass or more of carbon fibers,
wherein
the layered silicate and the carbon fibers are dispersed in a non-oriented state in the polyamide in a transmission electron microscope (TEM) observation of an ultrathin section of the carbon fiber reinforced plastic material,
the layered silicate is in the shape of hair,
the layered silicate is a mica, and
the mica has a thickness of 0.43 nm or more and 0.86 nm or less.

8. The carbon fiber reinforced plastic material according to claim 7 , wherein a modulus of elongation of carbon fiber reinforced plastic material in accordance to the method defined in ASTM D638 is 6000 MPa or more.

9. The carbon fiber reinforced plastic material according to claim 7 , wherein the polymer material is selected from a thermoplastic resin, a thermosetting resin and elastomer or rubber.

Assignees

• Aist

Inventors

• Shimizu Hiroshi

Classifications

• B29C48/2886

  of fillers or of fibrous materials, e.g. short-fibre reinforcements · CPC title

• B29C48/305

  having a wide opening, e.g. for forming sheets · CPC title

• B29C2948/92209

  Temperature · CPC title

• B29K2105/162

  Nanoparticles · CPC title

• C08K3/04

  Carbon · CPC title