Separation membrane structure
US-2017296980-A1 · Oct 19, 2017 · US
Fluid separation membrane, fluid separation membrane module, and porous carbon fiber
US10835874B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10835874-B2 |
| Application number | US-201716070695-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 17, 2017 |
| Priority date | Jan 22, 2016 |
| Publication date | Nov 17, 2020 |
| Grant date | Nov 17, 2020 |
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Abstract
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A fluid separation membrane has high compression strength in the fiber cross-section direction (direction orthogonal to the fiber axis). The fluid separation membrane is obtained by an organic polymer layer being formed on the surface of porous carbon fibers having a co-continuous porous structure. A fluid separation membrane module and porous carbon fibers having a fully co-continuous porous structure are also disclosed.
First claim
Opening claim text (preview).
The invention claimed is: 1. A fluid separation membrane wherein an organic polymer layer is formed on a surface of a porous carbon fiber having a co-continuous porous structure, wherein the co-continuous porous structure is provided all over the porous carbon fiber, and wherein a half-value width of an intensity peak of X-ray scattering of the porous carbon fiber is 5° or less, wherein an average pore diameter of the porous carbon fiber as a whole measured by a mercury intrusion method is 30 nm to 5,000 nm. 2. The fluid separation membrane according to claim 1 , wherein an average pore diameter in the surface of the porous carbon fiber measured by surface observation with a scanning electron microscope is 2 nm to 500 nm. 3. The fluid separation membrane according to claim 1 , wherein the co-continuous porous structure has a structural period of 10 nm to 10,000 nm. 4. The fluid separation membrane according to claim 1 , wherein the organic polymer layer is a layer comprising one or two or more kinds of organic polymers selected from the group consisting of aromatic polyimide, cellulose acetate, polysulfone, aromatic polyamide, polyether imide, polyether sulfone, polyacrylonitrile, polyphenylene sulfide, polyether ether ketone, polytetrafluoroethylene, polyvinylidene fluoride, and derivatives thereof. 5. The fluid separation membrane according to claim 1 , wherein the organic polymer layer is a layer comprising one or two or more kinds of organic polymers selected from the group consisting of aromatic polyimide, aromatic polyamide, and derivatives thereof. 6. A fluid separation membrane module in which a plurality of the fluid separation membranes according to claim 1 are housed in a casing. 7. The fluid separation membrane according to claim 1 , wherein the area ratio of the cross-sectional area A of the hollow portion to the cross-sectional area B of the porous carbon fiber (hollow area ratio A/B) is 0.001 to 0.7.
Assignees
Inventors
Classifications
- B01D69/10Primary
Supported membranes; Membrane supports · CPC title
Chemically bonded layers, e.g. cross-linking · CPC title
Aromatic polyethers · CPC title
Polyacrylonitrile · CPC title
Different components in separate layers · CPC title
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- What does patent US10835874B2 cover?
- A fluid separation membrane has high compression strength in the fiber cross-section direction (direction orthogonal to the fiber axis). The fluid separation membrane is obtained by an organic polymer layer being formed on the surface of porous carbon fibers having a co-continuous porous structure. A fluid separation membrane module and porous carbon fibers having a fully co-continuous porous s…
- Who is the assignee on this patent?
- Toray Industries
- What technology area does this patent fall under?
- Primary CPC classification B01D69/10. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Nov 17 2020 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).