GB921236A - Improvements in or relating to the production of low permeability carbon - Google Patents
Improvements in or relating to the production of low permeability carbonInfo
- Publication number
- GB921236A GB921236A GB2944659A GB2944659A GB921236A GB 921236 A GB921236 A GB 921236A GB 2944659 A GB2944659 A GB 2944659A GB 2944659 A GB2944659 A GB 2944659A GB 921236 A GB921236 A GB 921236A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbon
- volatile matter
- low permeability
- produced
- polymer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
- C04B35/524—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from polymer precursors, e.g. glass-like carbon material
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
Low permeability carbon, i.e. carbon of permeability such that the volume of helium which can pass through one centimetre cube of the carbon in one second under a pressure difference of one atmosphere is not greater than 10-6ml., is produced by heating a polymer which has been formed from a polymerizable monomeric cyclic carbon-containing compound at a sufficiently high temperature and for a sufficient length of time to cause the polymer to decompose completely into carbon and volatile matter and to drive off the volatile matter. Suitable polymers are those produced from furfuryl alcohol, furfural, furane, coumarone, indene, cyclopentadiene and mixtures thereof. Shaped carbon bodies of low permeability may be produced by polymerizing or partly polymerizing a polymerizable monomeric cyclic carbon-containing compound or mixture of such compounds under heat and pressure, arresting the polymerization process when the material is sufficiently plastic to mould, moulding the material to the desired shape, completing the polymerization process if necessary, and heating the polymerized material at a sufficiently high temperature and for a sufficient length of time to cause it to decompose completely into carbon and volatile matter and to drive off the volatile matter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2944659A GB921236A (en) | 1959-08-28 | 1959-08-28 | Improvements in or relating to the production of low permeability carbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2944659A GB921236A (en) | 1959-08-28 | 1959-08-28 | Improvements in or relating to the production of low permeability carbon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB921236A true GB921236A (en) | 1963-03-20 |
Family
ID=10291692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2944659A Expired GB921236A (en) | 1959-08-28 | 1959-08-28 | Improvements in or relating to the production of low permeability carbon |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB921236A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3355527A (en) * | 1964-07-07 | 1967-11-28 | Hitachi Ltd | Process for manufacturing carbon products |
| DE1264312B (en) * | 1963-11-05 | 1968-03-21 | Japan Atomic Energy Res Inst | Process for the production of nuclear fuel elements |
| US4417872A (en) | 1982-02-01 | 1983-11-29 | Energy Research Corporation | Heat treating |
| EP0188637A1 (en) * | 1985-01-18 | 1986-07-30 | SIGRI GmbH | Process for producing vitreous carton bodies |
| EP0197176A1 (en) * | 1985-04-10 | 1986-10-15 | SIGRI GmbH | Process for making vitreous carbon bodies |
-
1959
- 1959-08-28 GB GB2944659A patent/GB921236A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1264312B (en) * | 1963-11-05 | 1968-03-21 | Japan Atomic Energy Res Inst | Process for the production of nuclear fuel elements |
| US3355527A (en) * | 1964-07-07 | 1967-11-28 | Hitachi Ltd | Process for manufacturing carbon products |
| US4417872A (en) | 1982-02-01 | 1983-11-29 | Energy Research Corporation | Heat treating |
| EP0188637A1 (en) * | 1985-01-18 | 1986-07-30 | SIGRI GmbH | Process for producing vitreous carton bodies |
| US4698189A (en) * | 1985-01-18 | 1987-10-06 | Sigri Gmbh | Method for the manufacture of vitreous carbon bodies |
| EP0197176A1 (en) * | 1985-04-10 | 1986-10-15 | SIGRI GmbH | Process for making vitreous carbon bodies |
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