Fire resistant textile material
US-12152320-B2 · Nov 26, 2024 · US
Porous carbon sheet and precursor fiber sheet thereof
US10957916B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10957916-B2 |
| Application number | US-201615544455-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 19, 2016 |
| Priority date | Jan 28, 2015 |
| Publication date | Mar 23, 2021 |
| Grant date | Mar 23, 2021 |
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Abstract
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A precursor fiber sheet includes short carbon fibers having an average length of 3 to 10 mm, natural pulp having an ash content of 0.15 mass % or less, and a heat-carbonizable resin, and a porous carbon sheet is obtained by carbonizing the precursor fiber sheet. This enhances gas diffusibility and water removal properties of the porous carbon sheet and has high mechanical strength and few appearance defects even when the bulk density of the porous carbon sheet is lowered.
First claim
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The invention claimed is: 1. A precursor fiber sheet comprising: short carbon fibers having an average length of 3 to 10 mm, natural pulp having an ash content of 0.03 mass % to 0.10 mass %, and a heat-carbonizable resin, wherein the natural pulp is sulfite pulp, wherein the short carbon fibers and the natural pulp are randomly dispersed in a two-dimensional plane. 2. The precursor fiber sheet according to claim 1 , comprising 5 to 100 parts by mass of the natural pulp based on 100 parts by mass of the short carbon fibers. 3. The precursor fiber sheet according to claim 2 , wherein the natural pulp is wood pulp. 4. The precursor fiber sheet according to claim 1 , wherein the natural pulp is wood pulp. 5. A method of producing a porous carbon sheet comprising: heating the precursor fiber sheet according to claim 1 at a temperature having a maximum temperature of 1300 to 3000 ° C. to convert the natural pulp and the heat-carbonizable resin into a bonding carbide.
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Classifications
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Porous electrodes · CPC title
Fuel cells with polymeric electrolytes · CPC title
by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives (in combination with needling D04H1/488) · CPC title
Wood pulp · CPC title
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- What does patent US10957916B2 cover?
- A precursor fiber sheet includes short carbon fibers having an average length of 3 to 10 mm, natural pulp having an ash content of 0.15 mass % or less, and a heat-carbonizable resin, and a porous carbon sheet is obtained by carbonizing the precursor fiber sheet. This enhances gas diffusibility and water removal properties of the porous carbon sheet and has high mechanical strength and few appea…
- Who is the assignee on this patent?
- Toray Industries
- What technology area does this patent fall under?
- Primary CPC classification D03D15/275. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Mar 23 2021 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).