Highly heat-resistant composite material with excellent formability and production method thereof
US-2016326399-A1 · Nov 10, 2016 · US
Composite material, and prepreg using same
US2020002492A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020002492-A1 |
| Application number | US-201816485480-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 8, 2018 |
| Priority date | Feb 13, 2017 |
| Publication date | Jan 2, 2020 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
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A composite material includes: a carbon fiber bundle in which a plurality of continuous carbon fibers is arranged; carbon nanotubes which adhere to respective surfaces of the carbon fibers; and a sizing agent which covers at least a part of each of the surfaces to which the carbon nanotubes adhere. When the composite material disposed such that a longitudinal direction is vertically oriented is pierced with an inspection needle having a diameter of 0.55 mm across the longitudinal direction, and the composite material and the inspection needle are relatively moved in the longitudinal direction by 40 mm at a speed of 300 mm/min, a maximum value of a load acting between the composite material and the inspection needle is smaller than 0.5 N.
First claim
Opening claim text (preview).
1 . A composite material comprising: a carbon fiber bundle in which a plurality of continuous carbon fibers are arranged; carbon nanotubes which adhere to respective surfaces of the carbon fibers; and a sizing agent which covers at least a part of each of the surfaces to which the carbon nanotubes adhere, wherein when the composite material disposed such that a longitudinal direction is vertically oriented is pierced with an inspection needle having a diameter of 0.55 mm across the longitudinal direction, and the composite material and the inspection needle are relatively moved in the longitudinal direction by 40 mm at a speed of 300 mm/min, a maximum value of a load acting between the composite material and the inspection needle is smaller than 0.5 N. 2 . The composite material according to claim 1 , wherein the composite material has a shape of a strip in which 3 to 30 fibers of the carbon fibers are piled in a thickness direction. 3 . The composite material according to claim 1 , wherein an average value of the load acting between the composite material and the inspection needle is smaller than 0.4 N. 4 . A prepreg comprising the composite material according to claim 1 , and a matrix resin impregnated in the composite material.
Assignees
Inventors
Classifications
Polyamides derived from polyamines and polycarboxylic acids (C08J2377/10 takes precedence) · CPC title
with polyhydric phenols · CPC title
Characterised by the use of epoxy resins; Derivatives of epoxy resins · CPC title
Fibres of carbon · CPC title
- D06M11/74Primary
with carbon or graphite; with carbides; with graphitic acids or their salts · CPC title
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Frequently asked questions
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- What does patent US2020002492A1 cover?
- A composite material includes: a carbon fiber bundle in which a plurality of continuous carbon fibers is arranged; carbon nanotubes which adhere to respective surfaces of the carbon fibers; and a sizing agent which covers at least a part of each of the surfaces to which the carbon nanotubes adhere. When the composite material disposed such that a longitudinal direction is vertically oriented is…
- Who is the assignee on this patent?
- Nitta Corp
- What technology area does this patent fall under?
- Primary CPC classification D06M11/74. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Thu Jan 02 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).