GB1278676A - Thermally stabilizing acrylonitrile polymer filamentary materials and carbonizing the products obtained - Google Patents
Thermally stabilizing acrylonitrile polymer filamentary materials and carbonizing the products obtainedInfo
- Publication number
- GB1278676A GB1278676A GB3910769A GB3910769A GB1278676A GB 1278676 A GB1278676 A GB 1278676A GB 3910769 A GB3910769 A GB 3910769A GB 3910769 A GB3910769 A GB 3910769A GB 1278676 A GB1278676 A GB 1278676A
- Authority
- GB
- United Kingdom
- Prior art keywords
- temperature
- heated
- filamentary
- minutes
- oxygen
- 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
-
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/34—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxygen, ozone or ozonides
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Fibers (AREA)
Abstract
1278676 Polyacrylonitrile fibres CELANESE CORP 5 Aug 1969 [5 Aug 1968] 39107/69 Heading B5B [Also in Division C1] Filamentary material consisting of an acrylic polymer containing at least 95 mole per cent of recurring acrylonitrile units, drawn at a sufficiently high draw ratio to endow it with a tenacity of at least 5 g.p.d., and retaining its filamentary configuration for at least three minutes on heating at 300‹ C. is thermally stabilized by continuously passing it through an oxygen-containing atmosphere in a zone maintained at a temperature of at least 260‹ C. at a rate such that the issuing material has a chemically combined oxygen content of at least 7% still retains its filamentary configuration, does not burn in a match flame and is capable of undergoing carbonization. The filamentary starting material may have been drawn to such an extent as to impart to its single filament tenacity of 7À5 to 8 g.p.d., and it may consist of an acrylonitrile homopolymer or a copolymer of at least 99 mole per cent of acrylonitrile units and up to 1 mole per cent of one or more monoethylenically unsaturated comonomer units such as styrene, ethyl acrylate, ethyl methacrylate, vinyl acetate, vinyl chloride, vinylidene chloride and vinyl pyridene. The oxygen-containing atmosphere used may be air. The filamentary material may be a multifilament yarn. The material may be heated to from 260‹ to 290‹ C. for a period of from 8 to 70 minutes. The material may be heated to from 260‹ to 290‹ C. for a total residence time of at least 3 minutes, preferably at least 5 minutes, and may subsequently be passed through a zone provided with an oxygencontaining atmosphere in which the temperature progressively increases in the direction of travel of the material to between 330‹ and 400‹ C. The thermally stabilized material may be heated at a temperature of from 900‹ to 3000‹ C. in an inert atmosphere until a carbonized product is formed. Alternatively the material may be heated at a temperature of from 1500‹ to 3000‹ C. in an inert atmosphere until substantial graphitization of the material has occurred. The thermal stabilization zone may be maintained at a temperature of from 260‹ C. up to about 10‹ C. below the temperature at which the starting material shows signs of losing its filmentary configuration. If desired, the material may be heated initially in an oxygen-containing atmosphere at a temperature somewhat below 260‹ C., e.g. 240‹ C., for a brief period provided that the temperature is increased to at least 260‹ C. for a substantial part of the stabilization period.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US74995768A | 1968-08-05 | 1968-08-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1278676A true GB1278676A (en) | 1972-06-21 |
Family
ID=25015930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3910769A Expired GB1278676A (en) | 1968-08-05 | 1969-08-05 | Thermally stabilizing acrylonitrile polymer filamentary materials and carbonizing the products obtained |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA958174A (en) |
| DE (1) | DE1939389A1 (en) |
| FR (1) | FR2016871A1 (en) |
| GB (1) | GB1278676A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5915531A (en) * | 1982-07-17 | 1984-01-26 | 東邦レーヨン株式会社 | Activated carbon fiber spun yarn |
-
1969
- 1969-07-15 CA CA057,090A patent/CA958174A/en not_active Expired
- 1969-08-02 DE DE19691939389 patent/DE1939389A1/en active Pending
- 1969-08-05 GB GB3910769A patent/GB1278676A/en not_active Expired
- 1969-08-05 FR FR6926945A patent/FR2016871A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CA958174A (en) | 1974-11-26 |
| FR2016871A1 (en) | 1970-05-15 |
| DE1939389A1 (en) | 1970-02-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |