GB1260449A - Improvements in or relating to the production of carbonfibres - Google Patents
Improvements in or relating to the production of carbonfibresInfo
- Publication number
- GB1260449A GB1260449A GB1229370A GB1229370A GB1260449A GB 1260449 A GB1260449 A GB 1260449A GB 1229370 A GB1229370 A GB 1229370A GB 1229370 A GB1229370 A GB 1229370A GB 1260449 A GB1260449 A GB 1260449A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fibres
- temperature
- treated
- hour
- polyacrylonitrile
- 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
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 abstract 4
- 229920002239 polyacrylonitrile Polymers 0.000 abstract 3
- 239000002841 Lewis acid Substances 0.000 abstract 2
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 238000004132 cross linking Methods 0.000 abstract 2
- 150000007517 lewis acids Chemical class 0.000 abstract 2
- 230000003647 oxidation Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 abstract 2
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 abstract 2
- 238000003763 carbonization Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 238000007363 ring formation reaction Methods 0.000 abstract 1
- 229920002994 synthetic fiber Polymers 0.000 abstract 1
- 229920001059 synthetic polymer Polymers 0.000 abstract 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
- D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
- D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
- D01F9/20—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products
- D01F9/21—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F9/22—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyacrylonitriles
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Inorganic Fibers (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
1,260,449. Treatment of polyacrylonitrile fibres. SIGRI ELEKTROGRAPHIT G.m.b.H. 13 March, 1970 [12 June, 1969], No. 12293/70. Heading B5B. [Also in Division C1] Synthetic polymer fibres are rendered more suitable for carbonization by contacting the fibres with one or more Lewis acids at a temperature between 150‹ and 250‹ C., to effect cross-linking between and/or cyclization within polymer molecules, and then oxidizing the treated fibres, in the presence of a dehydrogenating agent, at a temperature in the range 175- 350‹ C. whilst maintaining them under tension. Preferably the synthetic fibres are of polyacrylonitrile and the Lewis acid is tin tetrachloride (in a complex with diphenyl ether) or sulphur trioxide. During the oxidation step the temperature may be controlled such that it rises at a rate of between 40‹ and 200‹ C. per hour, preferably at a rate of 100‹ C. per hour when the rise is from 200‹ to 300‹ C. The preferred dehydrogenating agent is air. Fibres so treated may be carbonized and graphitized in a single, or in separate, working steps. In an example polyacrylonitrile fibres, with a total count of 2400 den., are treated at 220‹ C. with a complex of tin tetrachloride and diphenyl ether, complete cross-linking occurring throughout the thickness of the fibres in one hour. They are then (1) subjected to oxidation by drawing them continuously through an oven which is flushed with 100 litres of air/hour and in which there is a linear temperature rise of 100‹ C. per hour in the range 200-300‹ C.; (2) carbonized and (3) graphitized (for details see Division C1).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691929849 DE1929849C3 (en) | 1969-06-12 | 1969-06-12 | Process for the production of carbon or graphite fibers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1260449A true GB1260449A (en) | 1972-01-19 |
Family
ID=5736788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1229370A Expired GB1260449A (en) | 1969-06-12 | 1970-03-13 | Improvements in or relating to the production of carbonfibres |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT299875B (en) |
| BE (1) | BE751899A (en) |
| CH (1) | CH527770A (en) |
| DE (1) | DE1929849C3 (en) |
| FR (1) | FR2045498A5 (en) |
| GB (1) | GB1260449A (en) |
| NL (1) | NL7002609A (en) |
| SE (1) | SE367995B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2221403A1 (en) * | 1973-03-16 | 1974-10-11 | Agency Ind Science Techn | |
| GB2139607A (en) * | 1983-05-09 | 1984-11-14 | Hitco | Production of pure carbonized polyacrylonitrile material |
| GB2321215A (en) * | 1997-01-17 | 1998-07-22 | Courtaulds Fibres | Cross-linked acrylonitrile precursors for carbon fibres |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3242000A (en) * | 1963-08-30 | 1966-03-22 | Deering Milliken Res Corp | Impregnated carbonized acrylic textile product and method for producing same |
-
1969
- 1969-06-12 DE DE19691929849 patent/DE1929849C3/en not_active Expired
-
1970
- 1970-02-20 CH CH244970A patent/CH527770A/en not_active IP Right Cessation
- 1970-02-24 NL NL7002609A patent/NL7002609A/xx unknown
- 1970-03-13 GB GB1229370A patent/GB1260449A/en not_active Expired
- 1970-04-02 AT AT301670A patent/AT299875B/en active
- 1970-04-20 FR FR7014244A patent/FR2045498A5/fr not_active Expired
- 1970-06-10 SE SE803970A patent/SE367995B/xx unknown
- 1970-06-12 BE BE751899D patent/BE751899A/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2221403A1 (en) * | 1973-03-16 | 1974-10-11 | Agency Ind Science Techn | |
| GB2139607A (en) * | 1983-05-09 | 1984-11-14 | Hitco | Production of pure carbonized polyacrylonitrile material |
| GB2321215A (en) * | 1997-01-17 | 1998-07-22 | Courtaulds Fibres | Cross-linked acrylonitrile precursors for carbon fibres |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1929849A1 (en) | 1970-12-17 |
| AT299875B (en) | 1972-07-10 |
| BE751899A (en) | 1970-12-14 |
| FR2045498A5 (en) | 1971-02-26 |
| NL7002609A (en) | 1970-12-15 |
| CH527770A (en) | 1972-09-15 |
| SE367995B (en) | 1974-06-17 |
| DE1929849C3 (en) | 1973-10-18 |
| DE1929849B2 (en) | 1973-03-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |