Composition for gas seal member and gas seal member
US-2018362734-A1 · Dec 20, 2018 · US
Gas seal member for high-pressure hydrogen device, and high-pressure hydrogen device
US11649387B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11649387-B2 |
| Application number | US-201816482806-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 13, 2018 |
| Priority date | Feb 14, 2017 |
| Publication date | May 16, 2023 |
| Grant date | May 16, 2023 |
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- Title
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Abstract
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Disclosed is a gas seal member for high-pressure hydrogen device with sufficiently reduced occurrence of both swelling destruction and blister destruction. The gas seal member is formed of a cross-linked product of an elastomer composition which comprises an elastomer and fibrous carbon nanostructures, wherein a hydrogen diffusion coefficient D1 of a cross-linked product of an elastomer component including the elastomer and a hydrogen diffusion coefficient D2 of the cross-linked product of the elastomer composition satisfy the relationship 0.7<D2/D1<1.0.
First claim
Opening claim text (preview).
The invention claimed is: 1. A gas seal member for high-pressure hydrogen device which is formed of a cross-linked product of an elastomer composition, wherein the elastomer composition comprises an elastomer and fibrous carbon nanostructures, a hydrogen diffusion coefficient D1 of a cross-linked product of an elastomer component including the elastomer and a hydrogen diffusion coefficient D2 of the cross-linked product of the elastomer composition satisfy the relationship 0.7<D2/D1<1.0, and the fibrous carbon nanostructures comprise single-walled carbon nanotubes. 2. The gas seal member for high-pressure hydrogen device according to claim 1 , wherein the elastomer is nitrile rubber, hydrogenated nitrile rubber, or fluororubber. 3. The gas seal member for high-pressure hydrogen device according to claim 1 , wherein the fibrous carbon nanostructures have an average diameter of 1 nm or more and 60 nm or less. 4. The gas seal member for high-pressure hydrogen device according to claim 1 , wherein the elastomer composition comprises 3 parts by mass or more and 15 parts by mass or less of the fibrous carbon nanostructures comprising single-walled carbon nanotubes, per 100 parts by mass of the elastomer. 5. The gas seal member for high-pressure hydrogen device according to claim 1 , wherein the gas seal member is configured to be used in a state of being in contact with high-pressure hydrogen of 35 MPa or more and 105 MPa or less. 6. The gas seal member for high-pressure hydrogen device according to claim 1 , wherein the elastomer composition comprises silica, and the amount of silica in the elastomer composition is 50 parts by mass or less. 7. A high-pressure hydrogen device comprising: a container filled with high-pressure hydrogen of 35 MPa or more and 105 MPa or less; and the gas seal member for high-pressure hydrogen device according to claim 5 which is in contact with the high-pressure hydrogen in the container.
Assignees
Inventors
Classifications
- C09K3/1028Primary
Fibres · CPC title
Elastomeric materials · CPC title
Fluorinated polymers, e.g. PTFE · CPC title
Carbon nanotubes · CPC title
- C09K3/10Primary
{Materials in mouldable or extrudable form} for sealing or packing joints or covers (filling pastes C09D5/34) · CPC title
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- What does patent US11649387B2 cover?
- Disclosed is a gas seal member for high-pressure hydrogen device with sufficiently reduced occurrence of both swelling destruction and blister destruction. The gas seal member is formed of a cross-linked product of an elastomer composition which comprises an elastomer and fibrous carbon nanostructures, wherein a hydrogen diffusion coefficient D1 of a cross-linked product of an elastomer compone…
- Who is the assignee on this patent?
- Univ Kyushu Nat Univ Corp, Zeon Corp
- What technology area does this patent fall under?
- Primary CPC classification C09K3/1028. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 16 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).