SU438171A1 - The method of obtaining carbon fiber material - Google Patents
The method of obtaining carbon fiber materialInfo
- Publication number
- SU438171A1 SU438171A1 SU1629620A SU1629620A SU438171A1 SU 438171 A1 SU438171 A1 SU 438171A1 SU 1629620 A SU1629620 A SU 1629620A SU 1629620 A SU1629620 A SU 1629620A SU 438171 A1 SU438171 A1 SU 438171A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- carbon fiber
- fiber material
- water
- obtaining carbon
- fibers
- Prior art date
Links
- 239000000463 material Substances 0.000 title description 5
- 229920000049 Carbon (fiber) Polymers 0.000 title description 4
- 239000004917 carbon fiber Substances 0.000 title description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 239000000835 fiber Substances 0.000 description 9
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 238000003763 carbonization Methods 0.000 description 5
- OAKJQQAXSVQMHS-UHFFFAOYSA-N hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 4
- 229920002239 polyacrylonitrile Polymers 0.000 description 3
- 238000005530 etching Methods 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Description
Изобретение относитс к области получени углеродных волокнистых материалов.This invention relates to the field of carbon fiber materials.
Известен способ получени углеродного волокнистого материала из полиакрилонитрильпого волокна путем окислени воздухом и карбонизации в среде водорода.A method of producing carbon fiber material from polyacrylonitrile fiber is known by air oxidation and carbonization in a hydrogen environment.
Однако таким способом не получают значительно тонких волокон.However, in this way do not get significantly thin fibers.
Цель предлагаемого изобретени - получение волокна с уменьшенным сечением. Дл этого карбонизацию провод т в среде водорода , содержащей от 0,5 до 20 об. % вод ного пара, причем перед карбонизацией волокно пропитывают водой или водным 15-64%-ным раствором гидразина при температуре от О до 50°С и атмосферном давлении.The purpose of the present invention is to obtain fibers with a reduced cross section. For this, carbonization is carried out in a hydrogen medium containing from 0.5 to 20 vol. % of water vapor, and prior to carbonization, the fiber is impregnated with water or an aqueous 15-64% solution of hydrazine at a temperature from 0 to 50 ° C and atmospheric pressure.
Согласно изобретению, углеродный волокнистый материал получают непрерывным способом в две стадии: вначале волокнистый материал , например ленту, состо щую из 3000- 8000 отдельных нескрученных полиакрилонитрильных волокон тониной 1,5-2,4 д/текс, окисл ют воздухом при напр жении на раст жение в течение нескольких часов при 150- 400°С, затем карбонизуют в течение 3-50 час до 400-1100°С с одновременным травлением волокон вод ным паром, содержащимс в среде водорода в количестве от 0,5 до 20 об.%.According to the invention, carbon fiber material is produced in a continuous process in two stages: first, a fibrous material, such as a tape consisting of 3000-8000 individual non-twisted polyacrylonitrile fibers with a fineness of 1.5-2.4 d / tex, is oxidized by air under tension Life is carried out for several hours at 150-400 ° C, then carbonized for 3-50 hours to 400-1100 ° C with simultaneous etching of the fibers with water vapor contained in the hydrogen medium in an amount from 0.5 to 20% by volume.
при этом вод ной пар ввод т путем непрерывной пропитки ленты неред карбонизацией водой или жидкостью, содержащей воду, при температуре от О до 50°С и атмосферном давлен ИИ с последующим испарением воды при карбонизации, а водород ввод т путем непрерывного вдувани .in this case, water vapor is introduced by continuous impregnation of the tape by non-carbonation with water or liquid containing water at a temperature from 0 to 50 ° C and atmospheric pressure of the AI, followed by evaporation of water during carbonization, and hydrogen is introduced by continuous injection.
В качестве лшдкости, содержащей воду, используют водные растворы веществ, состо щих только из элементов И, С, N, О, отдающие воду в виде вод ного пара в процессе карбонизации волокнистого материала. Предпочтительно иснользуют водный 15-64%-ный раствор гидразина.As a liquid containing water, aqueous solutions of substances consisting only of the elements I, C, N, O are used, which give up water in the form of water vapor in the process of carbonization of the fibrous material. Preferably, an aqueous 15-64% solution of hydrazine is used.
Полученный таким образом материал имеет равномерно протравленные волокна с площадью сечени в несколько раз меньшей по сравнению с волокнами, полученными без травлени вод ным паром.The material thus obtained has uniformly pickled fibers with a cross-sectional area several times smaller compared to fibers obtained without etching with water vapor.
Пример 1. Иепрерывную ленту, состо щую из 6000 отдельных полиакрилонитрильных волокон тониной 1,8-1,9 дтекс каждое, окисл ют воздухом при 230°С, расход воздуха при этом составл ет 50 нл воздуха/час, затемExample 1. A continuous tape consisting of 6000 individual polyacrylonitrile fibers of 1.8-1.9 dtex each is oxidized with air at 230 ° C, the air flow rate being 50 nl air / hour, then
ленту пропитывают водой комнатной температуры и карбонизуют до 1050°С в среде, состо щей из водорода и вод ного пара, при этом расход водорода составл ет 100 нл Н2/час, аthe tape is impregnated with water at room temperature and carbonized to 1050 ° C in an environment consisting of hydrogen and water vapor, the consumption of hydrogen being 100 nl H2 / hour, and
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702012284 DE2012284A1 (en) | 1970-03-14 | 1970-03-14 | Process for the manufacture of fiber products with thin carbon fibers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SU438171A1 true SU438171A1 (en) | 1974-07-30 |
| SU438171A3 SU438171A3 (en) | 1974-07-30 |
Family
ID=5765160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1629620A SU438171A3 (en) | 1970-03-14 | 1971-03-12 | The method of obtaining carbon fiber material |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3769390A (en) |
| BE (1) | BE764118A (en) |
| CA (1) | CA960011A (en) |
| CH (1) | CH515185A (en) |
| DE (1) | DE2012284A1 (en) |
| FR (1) | FR2084597A5 (en) |
| GB (1) | GB1311817A (en) |
| NL (1) | NL7103350A (en) |
| SU (1) | SU438171A3 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA972908A (en) * | 1971-08-19 | 1975-08-19 | Etsuo Shinkawa | Black lead and production thereof |
| US4118341A (en) * | 1974-05-27 | 1978-10-03 | Agency Of Industrial Science & Technology | Activated carbon |
| US3976746A (en) * | 1974-06-06 | 1976-08-24 | Hitco | Graphitic fibers having superior composite properties and methods of making same |
| US4714642A (en) * | 1983-08-30 | 1987-12-22 | Basf Aktiengesellschaft | Carbon fiber multifilamentary tow which is particularly suited for weaving and/or resin impregnation |
| US4534919A (en) * | 1983-08-30 | 1985-08-13 | Celanese Corporation | Production of a carbon fiber multifilamentary tow which is particularly suited for resin impregnation |
| US4559010A (en) * | 1984-05-01 | 1985-12-17 | Toray Industries, Inc. | Apparatus for producing oxidized filaments |
| US4776995A (en) * | 1985-03-22 | 1988-10-11 | Fiber Materials, Inc. | Method of making a structure |
| US4781223A (en) * | 1985-06-27 | 1988-11-01 | Basf Aktiengesellschaft | Weaving process utilizing multifilamentary carbonaceous yarn bundles |
| DE3621257A1 (en) * | 1986-06-25 | 1988-01-07 | Akzo Gmbh | METHOD FOR PRODUCING POROUS CARBON MEMBRANES |
| DE102006007208B3 (en) * | 2006-02-15 | 2007-07-05 | RUHR-UNIVERSITäT BOCHUM | Carbon fiber e.g. multi-walled nano fiber, upper surface etching method for e.g. biosensor, involves functionalizing upper surface of carbon nanofibers by oxidative treatment, where fibers are made of polyacrynitrile |
| EP1845179B1 (en) * | 2006-04-15 | 2010-07-28 | Toho Tenax Co., Ltd. | Continuous process for the production of carbon fibres |
| US20110104489A1 (en) * | 2007-10-11 | 2011-05-05 | Toho Tenax Co., Ltd. | Hollow carbon fibres and process for their production |
-
1970
- 1970-03-14 DE DE19702012284 patent/DE2012284A1/en active Pending
-
1971
- 1971-02-23 CA CA106,037A patent/CA960011A/en not_active Expired
- 1971-03-10 CH CH351671A patent/CH515185A/en not_active IP Right Cessation
- 1971-03-11 US US00123368A patent/US3769390A/en not_active Expired - Lifetime
- 1971-03-11 BE BE764118A patent/BE764118A/en unknown
- 1971-03-12 SU SU1629620A patent/SU438171A3/en active
- 1971-03-12 NL NL7103350A patent/NL7103350A/xx unknown
- 1971-03-12 FR FR7108824A patent/FR2084597A5/fr not_active Expired
- 1971-04-19 GB GB2381271*A patent/GB1311817A/en not_active Expired
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