Systems and methods for fiber zone-drawing and/or zone-annealing
US-2024200234-A1 · Jun 20, 2024 · US
Carbon fiber bundle and method of producing carbon fiber bundle
US2015114262A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2015114262-A1 |
| Application number | US-201314395250-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 18, 2013 |
| Priority date | Apr 18, 2012 |
| Publication date | Apr 30, 2015 |
| Grant date | — |
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Abstract
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Provided are carbon fiber bundles which have high knot strength even if the single fiber fineness is large, and which have excellent handling properties and processability. The carbon fiber bundles have a single fiber fineness of 0.8-2.5 dtex, knot strength of 298 N/mm 2 or greater. This method of producing carbon fibers having knot strength of 298 N/mm 2 or greater involves a heat treatment step for heat treating, for 50-150 minutes, specific polyacrylonitrile-based precursor fiber bundles described in the description in an oxidizing atmosphere rising in temperature in the temperature range of 220-300° C.
First claim
Opening claim text (preview).
1 . A carbon fiber bundle having a single fiber fineness of at least 0.8 dtex to no more than 2.5 dtex, and a knot strength of at least 298 N/mm 2 . 2 . The carbon fiber bundle according to claim 1 , wherein the knot strength of the carbon fiber bundle is at least 345 N/mm 2 . 3 . The carbon fiber bundle according to claim 1 , wherein the single fiber fineness of the carbon fiber bundle is at least 1.2 dtex to no more than 1.6 dtex, and the knot stre…
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Classifications
Chemistry & Metallurgy · mapped topic
- D01F9/22Primary
Textiles & Paper · mapped topic
Cross-Sectional Technologies · mapped topic
Textiles & Paper · mapped topic
Textiles & Paper · mapped topic
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- What does patent US2015114262A1 cover?
- Provided are carbon fiber bundles which have high knot strength even if the single fiber fineness is large, and which have excellent handling properties and processability. The carbon fiber bundles have a single fiber fineness of 0.8-2.5 dtex, knot strength of 298 N/mm 2 or greater. This method of producing carbon fibers having knot strength of 298 N/mm 2 or greater involves a heat treatment …
- Who is the assignee on this patent?
- Mitsubishi Rayon Co
- What technology area does this patent fall under?
- Primary CPC classification D01F9/22. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Thu Apr 30 2015 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).