CN118854494B - Preparation method of viscose-based carbon fiber material - Google Patents
Preparation method of viscose-based carbon fiber material Download PDFInfo
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- CN118854494B CN118854494B CN202411348881.6A CN202411348881A CN118854494B CN 118854494 B CN118854494 B CN 118854494B CN 202411348881 A CN202411348881 A CN 202411348881A CN 118854494 B CN118854494 B CN 118854494B
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- viscose
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- carbon fiber
- phenolic resin
- fiber material
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- 229920000297 Rayon Polymers 0.000 title claims abstract description 49
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 33
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 33
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 239000000463 material Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 39
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 54
- 239000000243 solution Substances 0.000 claims description 53
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 22
- 238000005470 impregnation Methods 0.000 claims description 17
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 12
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 claims description 12
- 150000002169 ethanolamines Chemical class 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 11
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 10
- 230000003647 oxidation Effects 0.000 claims description 10
- 238000007254 oxidation reaction Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 6
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 5
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 claims description 5
- 235000012538 ammonium bicarbonate Nutrition 0.000 claims description 5
- 239000001099 ammonium carbonate Substances 0.000 claims description 5
- 235000019270 ammonium chloride Nutrition 0.000 claims description 5
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 5
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 5
- GHGKUGQRRXYXEJ-UHFFFAOYSA-N n'-ethyl-n'-phenylpropane-1,3-diamine Chemical compound NCCCN(CC)C1=CC=CC=C1 GHGKUGQRRXYXEJ-UHFFFAOYSA-N 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- HVRCLXXJIQTXHC-UHFFFAOYSA-N 1-methylindole-3-carboxylic acid Chemical compound C1=CC=C2N(C)C=C(C(O)=O)C2=C1 HVRCLXXJIQTXHC-UHFFFAOYSA-N 0.000 claims description 3
- 238000003763 carbonization Methods 0.000 claims description 3
- 238000005087 graphitization Methods 0.000 claims description 3
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims 3
- -1 stirred evenly Chemical compound 0.000 claims 1
- 238000001035 drying Methods 0.000 abstract description 4
- 238000004321 preservation Methods 0.000 abstract description 4
- 238000010000 carbonizing Methods 0.000 abstract description 3
- 230000001590 oxidative effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000007598 dipping method Methods 0.000 description 15
- 235000019441 ethanol Nutrition 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 7
- 229920001568 phenolic resin Polymers 0.000 description 7
- 239000005011 phenolic resin Substances 0.000 description 7
- 239000000835 fiber Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- WQZGKKKJIJFFOK-ZZWDRFIYSA-N L-glucose Chemical compound OC[C@@H]1OC(O)[C@@H](O)[C@H](O)[C@H]1O WQZGKKKJIJFFOK-ZZWDRFIYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical class [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical group CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 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
- D01F9/16—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from products of vegetable origin or derivatives thereof, e.g. from cellulose acetate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to the field of carbon fiber materials, in particular to a preparation method of a viscose carbon fiber material, which comprises the following steps of impregnating a viscose white felt in an organic impregnating solution and an inorganic impregnating solution, drying and pre-oxidizing to obtain a viscose pre-oxidized felt; and (3) immersing the viscose-based pre-oxidized felt in a modified phenolic resin solution, curing, carbonizing and graphitizing to obtain the viscose-based carbon fiber material. Compared with the prior art, the viscose carbon fiber material has the beneficial effects that the viscose carbon fiber material prepared by the invention has higher strength, lower heat conductivity coefficient, excellent mechanical property and heat preservation performance.
Description
Technical Field
The invention relates to the field of carbon fiber materials, in particular to a preparation method of a viscose-based carbon fiber material.
Background
The organic precursor for producing the carbon fiber mainly comprises viscose fiber, polyacrylonitrile fiber, asphalt fiber and the like, and the carbon fiber prepared by different precursors has different characteristics, wherein the viscose fiber is the earliest raw material applied to preparing the carbon fiber with the advantages of low price and abundant resources.
The viscose carbon fiber is a fibrous carbon material, is an excellent carbon reinforcing material for military and civil use, is prepared by braiding viscose precursor wires and graphitizing, has the advantages of low density, corrosion resistance, high temperature resistance, fatigue resistance, low thermal expansion coefficient, better flexibility, capability of realizing heat preservation and heat insulation in a wrapping mode, and has larger market potential in the aspects of metallurgy, photovoltaic equipment and the like, but the viscose carbon fiber heat insulation material has the defects of lower strength, higher heat conductivity and the like.
Disclosure of Invention
In order to solve the above-mentioned problems in the background art, the present invention provides a method for preparing a viscose-based carbon fiber material.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a preparation method of a viscose carbon fiber material comprises the following steps:
Dipping the viscose base white felt in organic dipping liquid and inorganic dipping liquid, drying and pre-oxidizing to obtain viscose base pre-oxidized felt;
dipping the viscose-based pre-oxidized felt in a modified phenolic resin solution, curing, carbonizing and graphitizing to obtain a viscose-based carbon fiber material;
the preparation method of the organic impregnating solution comprises the following steps:
dispersing 1-methylindole-3-formic acid in thionyl chloride, heating for reaction, removing redundant thionyl chloride, adding ethanolamine and toluene, and heating for reaction to obtain ethanolamine derivatives;
Dispersing ethanolamine derivative and glycol in ethanol to obtain organic impregnating solution;
the preparation method of the inorganic impregnating solution comprises the following steps:
Dispersing ammonium sulfate, ammonium chloride and ammonium bicarbonate in water to obtain inorganic impregnating solution.
Preferably, the preparation method of the modified phenolic resin solution comprises the following steps:
dispersing phenol and N- (3-aminopropyl) -N-ethylaniline in ethanol, uniformly stirring, adding a sodium hydroxide aqueous solution and polymerizing a formaldehyde aqueous solution to obtain modified phenolic resin;
and dispersing the modified phenolic resin in ethanol to obtain a modified phenolic resin solution.
Preferably, the organic impregnating solution consists of 1-5 parts by mass of ethanolamine derivative, 5-15 parts by mass of ethylene glycol and 100 parts by mass of ethanol.
Preferably, the inorganic impregnating solution consists of 2-4 parts by mass of ammonium sulfate, 2-4 parts by mass of ammonium chloride, 4-6 parts by mass of ammonium bicarbonate and 100 parts by mass of water.
Preferably, in the modified phenolic resin polymerization reaction, the mass ratio of the phenol, the N- (3-aminopropyl) -N-ethylaniline, the sodium hydroxide and the formaldehyde is 100 (4-8): 0.5-1.5): 40-60.
Preferably, the modified phenolic resin solution consists of 40-60 parts by mass of modified phenolic resin and 100 parts by mass of ethanol.
Preferably, the dipping time in the organic dipping liquid is 25-35min, and the dipping time in the inorganic dipping liquid is 45-55min.
Preferably, the pre-oxidation conditions are that the pre-oxidation is performed at 140-150 ℃ for 5-15min,160-170 ℃ for 10-20min,200-220 ℃ for 10-20min,230-250 ℃ for 10-20min and 260-280 ℃ for 20-40min in sequence.
Preferably, the dipping time in the modified phenolic resin solution is 15-25min, and the curing condition is that the modified phenolic resin solution is cured for 25-35min at 150-160 ℃.
Preferably, the carbonization graphitization conditions are that the treatment is carried out at 295-305 ℃ for 10-20min,495-505 ℃ for 5-15min,1200-1400 ℃ for 35-45min,1600-1800 ℃ for 0.5-1.5h and 2000-2200 ℃ for 1-2h in sequence.
Compared with the prior art, the invention has the beneficial effects that:
1. the viscose carbon fiber material prepared by the invention has higher strength, lower heat conductivity coefficient, excellent mechanical property and heat preservation property.
2. The viscose-based white felt is prepared by double impregnation and pre-oxidation of an organic impregnating solution and an inorganic impregnating solution, wherein the organic impregnating solution consists of ethanolamine derivatives, glycol components and ethanol, and the organic impregnating solution and the inorganic impregnating solution promote reactions such as intermolecular crosslinking and oxidation of macromolecular chains of viscose fibers, prevent the generation of L-glucose and improve the performance of the pre-oxidized felt.
3. The viscose-based pre-oxidized felt is impregnated in a modified phenolic resin solution, solidified, carbonized and graphitized to obtain a viscose-based carbon fiber material, and the N- (3-aminopropyl) -N-ethyl modified phenolic resin is impregnated and solidified, so that the pre-oxidized felt and the resin are better combined, and graphite carbon formed during the carbonization and graphitization can be well filled in gaps inside the material, and the mechanical property and the heat preservation property of the carbon fiber material are improved.
Detailed Description
Unless otherwise indicated, the starting materials and reagents used in the present invention are commercially available or may be prepared by known methods.
Preparation example 1
17.5G of 1-methylindole-3-formic acid is dispersed in 200g of thionyl chloride, reacted for 3 hours at 80 ℃, distilled to remove thionyl chloride, then 6.2g of ethanolamine and 100g of toluene are added for reaction for 2 hours at 100 ℃, toluene is distilled to remove, saturated sodium bicarbonate solution is added for stirring for 1 hour, extraction is carried out by ethyl acetate, concentration and drying are carried out, and ethanolamine derivatives are obtained.
Preparation example 2
100 Parts of phenol and 6 parts of N- (3-aminopropyl) -N-ethylaniline are dispersed in 150 parts of absolute ethyl alcohol, the mixture is stirred uniformly, 3mol/L sodium hydroxide solution (containing 1 part of sodium hydroxide) is added, formaldehyde aqueous solution (containing 50 parts of formaldehyde) with the mass concentration of 20% is added, and the mixture is reacted for 5 hours at 75 ℃ to obtain the modified phenolic resin.
Preparation example 3
100 Parts of phenol is dispersed in 150 parts of absolute ethyl alcohol, uniformly stirred, 3mol/L sodium hydroxide solution (containing 1 part of sodium hydroxide) is added, and formaldehyde aqueous solution (containing 50 parts of formaldehyde) with the mass concentration of 20% is added for reaction for 5 hours at 75 ℃ to obtain the phenolic resin.
Example 1
A preparation method of a viscose carbon fiber material comprises the following steps:
Dipping a viscose base Bai Zhan (gram weight is 500g/m 2) in an organic dipping liquid for 30min, dipping in an inorganic dipping liquid for 50min, drying, and sequentially pre-oxidizing at 145 ℃ for 10min,165 ℃ for 15min,210 ℃ for 15min,240 ℃ for 15min and 270 ℃ for 30min to obtain a viscose base pre-oxidized felt;
Immersing the viscose-based pre-oxidized felt in a modified phenolic resin solution for 20min, curing for 30min at 155 ℃, and carbonizing and graphitizing under the conditions of 300 ℃ for 15min,500 ℃ for 10min,1300 ℃ for 40min,1700 ℃ for 1h and 2100 ℃ for 1.5h in sequence to obtain the viscose-based carbon fiber material.
Wherein, the organic impregnating solution consists of 3 parts of ethanolamine derivative (obtained in preparation example 1), 10 parts of ethylene glycol and 100 parts of ethanol according to parts by weight;
The inorganic impregnating solution consists of 3 parts of ammonium sulfate, 3 parts of ammonium chloride, 5 parts of ammonium bicarbonate and 100 parts of water according to parts by mass;
The modified phenolic resin solution consists of 50 parts of modified phenolic resin (obtained in preparation example 2) and 100 parts of ethanol in parts by weight.
Example 2
This embodiment differs from embodiment 1 in that:
The organic impregnating solution consists of 1 part of ethanolamine derivative (obtained in preparation example 1), 10 parts of ethylene glycol and 100 parts of ethanol according to parts by weight;
the remainder was identical to example 1.
Example 3
This embodiment differs from embodiment 1 in that:
the organic impregnating solution consists of 5 parts of ethanolamine derivative (obtained in preparation example 1), 10 parts of ethylene glycol and 100 parts of ethanol according to parts by weight;
the remainder was identical to example 1.
Example 4
This embodiment differs from embodiment 1 in that:
The modified phenolic resin solution consists of 40 parts of modified phenolic resin (obtained in preparation example 2) and 100 parts of ethanol in parts by weight;
the remainder was identical to example 1.
Example 5
This embodiment differs from embodiment 1 in that:
the modified phenolic resin solution consists of 60 parts of modified phenolic resin (obtained in preparation example 2) and 100 parts of ethanol in parts by weight;
the remainder was identical to example 1.
Comparative example 1
This comparative example differs from example 1 in that:
the viscose Bai Zhan (gram weight 500g/m 2) was immersed in an inorganic impregnation solution for 50min,
That is, the impregnation is performed without using an organic impregnating solution;
the remainder was identical to example 1.
Comparative example 2
This comparative example differs from example 1 in that:
dipping the viscose-based pre-oxidized felt in a phenolic resin solution for 20min;
The phenolic resin solution consists of 50 parts of phenolic resin (obtained in preparation example 3) and 100 parts of ethanol in parts by weight;
the remainder was identical to example 1.
Comparative example 3
This comparative example differs from example 1 in that:
The viscose base Bai Zhan (gram weight 500g/m 2) was immersed in the inorganic impregnating solution for 50min, that is, without using the organic impregnating solution;
dipping the viscose-based pre-oxidized felt in a phenolic resin solution for 20min;
The phenolic resin solution consists of 50 parts of phenolic resin (obtained in preparation example 3) and 100 parts of ethanol in parts by weight;
the remainder was identical to example 1.
Results and detection
Compression strength, namely, carrying out compression test by using an INSTRON-5567A universal material tester, wherein the length of a sample is 50mm, the width of the sample is 50mm, the thickness of the sample is 10mm, the compression speed is 2mm/min, and the test is stopped when the compression amount is 5%.
And the thermal conductivity is tested by adopting a DRS-III high-temperature thermal conductivity tester, wherein the thermal conductivity of the sample is tested by sintering the sample to 1100 ℃ under the high-temperature environment, and the length, width and thickness of the sample are 25mm, 25mm and 10mm.
The results are shown in Table 1.
TABLE 1
From Table 1, examples 1-5 show that the viscose-based carbon fiber material prepared by the invention has higher strength, lower heat conductivity coefficient, excellent mechanical property and heat insulation property.
As is clear from the comparison of examples 1 and comparative examples 1 to 3, the impregnation of the organic impregnating solution and the impregnation of the modified phenolic resin solution have very important roles in the performance of the viscose-based carbon fiber material, and the performance of the viscose-based carbon fiber material is obviously reduced no matter the impregnation of the organic impregnating solution is absent or the impregnation of the modified phenolic resin solution is absent, but when the organic impregnating solution and the modified phenolic resin solution are used at the same time, the performance of the viscose-based carbon fiber material is obviously improved, and the synergistic enhancement effect is achieved.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
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| CN202411348881.6A CN118854494B (en) | 2024-09-26 | 2024-09-26 | Preparation method of viscose-based carbon fiber material |
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| CN118854494B true CN118854494B (en) | 2024-12-06 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86107562A (en) * | 1985-10-09 | 1987-07-15 | 伊索福圣戈班公司 | Mineral fibre impregnation composition and impregnation mineral fibre |
| CN113774604A (en) * | 2021-09-17 | 2021-12-10 | 安徽弘昌新材料有限公司 | Preparation process of viscose-based carbon fiber composite graphite felt and prepared graphite felt |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB452435A (en) * | 1935-02-21 | 1936-08-21 | Calico Printers Ass Ltd | Improvements relating to the ornamentation of textile fabrics |
| GB1106151A (en) * | 1964-08-26 | 1968-03-13 | Ruberoid Co Ltd | Resin-impregnated felt |
| JP2007070738A (en) * | 2005-09-05 | 2007-03-22 | Gun Ei Chem Ind Co Ltd | Ultra fine phenolic resin fibers, aggregates thereof, and production methods thereof |
| US7741406B2 (en) * | 2006-09-13 | 2010-06-22 | Georgia-Pacific Chemicals Llc | Phenol-formaldehyde resin having low concentration of tetradimer |
| JP6569466B2 (en) * | 2015-10-27 | 2019-09-04 | 信越化学工業株式会社 | Chemically amplified positive resist composition and pattern forming method |
| CN114836900B (en) * | 2022-04-26 | 2023-06-30 | 东华大学 | Superfine viscose-based carbon fiber heat insulation hard felt and preparation method thereof |
-
2024
- 2024-09-26 CN CN202411348881.6A patent/CN118854494B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86107562A (en) * | 1985-10-09 | 1987-07-15 | 伊索福圣戈班公司 | Mineral fibre impregnation composition and impregnation mineral fibre |
| CN113774604A (en) * | 2021-09-17 | 2021-12-10 | 安徽弘昌新材料有限公司 | Preparation process of viscose-based carbon fiber composite graphite felt and prepared graphite felt |
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