Method for manufacturing composite fabric, composite fabric, and carbon fiber reinforced molding
US-2019048519-A1 · Feb 14, 2019 · US
Fiber constituted from carbon nanotube and method for manufacturing same
US11686019B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11686019-B2 |
| Application number | US-201816644656-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 11, 2018 |
| Priority date | Oct 13, 2017 |
| Publication date | Jun 27, 2023 |
| Grant date | Jun 27, 2023 |
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Abstract
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The purpose of the present disclosure is to provide a CNT fiber that is constituted of aligned carbon nanotubes (CNTs), is thin, has little irregularity in thickness, has excellent winding properties when undergoing coiling processing, and has superior conductivity. Provided is a CNT fiber constituted of carbon nanotubes (CNTs) having a thickness of 0.01 μm-3 mm, having a coefficient of variation for irregularity in thickness of 0.2 or less, having a distribution rate a for deviation from roundness of 40% or greater, and a distribution rate b of 70% or greater. Also provided is a method for manufacturing the CNT fiber.
First claim
Opening claim text (preview).
The invention claimed is: 1. A carbon nanotube (CNT) fiber consisting of CNTs and bile salts, having a thickness of 0.01 μm to 3 mm, a coefficient of variation for thickness irregularity of 0.2 or less, and a distribution rate a of 40% or more and a distribution rate b of 70% or more as indicators of roundness, wherein in a spectrum obtained by resonance Raman spectroscopic measurement, when the maximum peak intensity in the range of 1550 cm −1 to 1650 cm −1 is defined as G and the maximum peak intensity in the range from 1300 cm −1 to 1400 cm −1 is defined as D, the ratio G/D is 30 or more, and the CNT fiber has a fiber density of 0.8 g/cm 3 to 2.0 g/cm 3 . 2. The CNT fiber according to claim 1 , wherein 50 or more CNTs having a diameter of 5 nm or less are present in arbitrary 100 CNTs when observed with a transmission electron microscope. 3. The CNT fiber according to claim 1 , having a conductivity of 3000 S/cm to 60000 S/cm. 4. The CNT fiber according to claim 1 , wherein the bile salts are sodium cholate, sodium taurocholate, sodium deoxycholate and/or sodium taurodeoxycholate. 5. An electrical wire comprising the CNT fiber according to claim 1 . 6. A coil comprising the CNT fiber according to claim 1 .
Assignees
Inventors
Classifications
obtained by TEM, STEM, STM or AFM · CPC title
After-treatment · CPC title
Manufacture or treatment of nanostructures · CPC title
Nanocarbons · CPC title
Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title
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- What does patent US11686019B2 cover?
- The purpose of the present disclosure is to provide a CNT fiber that is constituted of aligned carbon nanotubes (CNTs), is thin, has little irregularity in thickness, has excellent winding properties when undergoing coiling processing, and has superior conductivity. Provided is a CNT fiber constituted of carbon nanotubes (CNTs) having a thickness of 0.01 μm-3 mm, having a coefficient of variati…
- Who is the assignee on this patent?
- Aist, Asahi Chemical Ind
- What technology area does this patent fall under?
- Primary CPC classification D01F9/08. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Jun 27 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).