CN110258172A - High-performance carbon fibre/meta-aramid fibre fibrid paper-based composite material and preparation method thereof - Google Patents
High-performance carbon fibre/meta-aramid fibre fibrid paper-based composite material and preparation method thereof Download PDFInfo
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- CN110258172A CN110258172A CN201910603007.5A CN201910603007A CN110258172A CN 110258172 A CN110258172 A CN 110258172A CN 201910603007 A CN201910603007 A CN 201910603007A CN 110258172 A CN110258172 A CN 110258172A
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- 229920003235 aromatic polyamide Polymers 0.000 title claims abstract description 134
- 239000004760 aramid Substances 0.000 title claims abstract description 127
- 239000002131 composite material Substances 0.000 title claims abstract description 91
- 239000000835 fiber Substances 0.000 title claims abstract description 45
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 40
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 180
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 177
- 239000004917 carbon fiber Substances 0.000 claims abstract description 177
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims abstract description 68
- 238000001035 drying Methods 0.000 claims abstract description 38
- 238000007731 hot pressing Methods 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 24
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 9
- 239000000725 suspension Substances 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000006185 dispersion Substances 0.000 claims description 18
- 238000004090 dissolution Methods 0.000 claims description 15
- 238000001704 evaporation Methods 0.000 claims description 12
- 230000008020 evaporation Effects 0.000 claims description 12
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 10
- 239000007822 coupling agent Substances 0.000 claims description 10
- 229910017604 nitric acid Inorganic materials 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 8
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 8
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 8
- 230000008929 regeneration Effects 0.000 claims description 8
- 238000011069 regeneration method Methods 0.000 claims description 8
- 230000004048 modification Effects 0.000 claims description 7
- 238000012986 modification Methods 0.000 claims description 7
- 238000004381 surface treatment Methods 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 230000007062 hydrolysis Effects 0.000 claims description 6
- 238000006460 hydrolysis reaction Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 229920002994 synthetic fiber Polymers 0.000 claims description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 claims description 3
- 238000013019 agitation Methods 0.000 claims description 2
- 238000001291 vacuum drying Methods 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims 1
- 239000003643 water by type Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000002585 base Substances 0.000 description 38
- 229920006231 aramid fiber Polymers 0.000 description 30
- 238000005516 engineering process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000001376 precipitating effect Effects 0.000 description 7
- UUEWCQRISZBELL-UHFFFAOYSA-N 3-trimethoxysilylpropane-1-thiol Chemical compound CO[Si](OC)(OC)CCCS UUEWCQRISZBELL-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 description 3
- 239000003733 fiber-reinforced composite Substances 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000003828 vacuum filtration Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 229960003638 dopamine Drugs 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000010148 water-pollination Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 206010054949 Metaplasia Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- -1 dopamine modified carbon fiber Chemical class 0.000 description 1
- 230000020764 fibrinolysis Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011208 reinforced composite material Substances 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
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- 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
- D06M11/07—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 halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
- D06M11/11—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 halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
- D06M11/13—Ammonium halides or halides of elements of Groups 1 or 11 of the Periodic Table
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- 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
- D06M11/58—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 nitrogen or compounds thereof, e.g. with nitrides
- D06M11/64—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 nitrogen or compounds thereof, e.g. with nitrides with nitrogen oxides; with oxyacids of nitrogen or their salts
- D06M11/65—Salts of oxyacids of nitrogen
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- 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
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/144—Alcohols; Metal alcoholates
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- 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
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
- D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
- D06M13/513—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/26—Polyamides; Polyimides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/46—Non-siliceous fibres, e.g. from metal oxides
- D21H13/50—Carbon fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
- D21J3/12—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds of sheets; of diaphragms
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- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/34—Polyamides
- D06M2101/36—Aromatic polyamides
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- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/40—Fibres of carbon
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
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- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
Abstract
The invention discloses high-performance carbon fibre/meta-aramid fibre fibrid paper-based composite materials and preparation method thereof.This method is first surface-treated carbon fiber, and is modified with silane coupling agent to carbon fiber, to enhance carbon fiber surface activity；Carbon fiber is mixed into copy paper by different proportion with meta-aramid fibre fibrid, obtains carbon fiber/meta-aramid fibre fibrid composite base paper；Anhydrous LiCl is added in DMAc, is stirred at room temperature, DMAc/LiCl solution is made；DMAc/LiCl solution is added dropwise on carbon fiber/meta-aramid fibre fibrid composite base paper, dissolves meta-aramid fibre fibrid, hot-pressing drying is up to high-performance carbon fibre/meta-aramid fibre fibrid paper-based composite material.Carbon fiber/meta-aramid fibre fibrid paper-based composite material of this method preparation has good chemical stability and thermal stability, excellent conduction and heating conduction, higher mechanical strength.
Description
Technical field
The present invention relates to a kind of production method of paper-based composite material more particularly to a kind of high-performance carbon fibre/meta position virtues
The preparation method of synthetic fibre fibrid paper-based composite material.
Background technique
It is also bigger to the impact force of track as the track train speed of service is getting faster.Therefore urgently wish to realize
Train lightweight is so as to reducing damage and energy consumption during train driving to rail.Traditional steel knot is replaced using carbon fiber
Structure can mitigate the weight of train 30%~40%, and carbon fiber has a lightweight, high specific strength, and high temperature resistant is corrosion-resistant etc. excellent
Gesture, therefore carbon fiber has great development potentiality in terms of the development of bullet train.But since the raw material of production carbon fiber is poly-
Acrylonitrile silk price is higher, and leading to its cost aspect is a bottleneck of its development.Have again is exactly that carbon fibre composite is quick
The upgrading needs of forming technique further increase.
Assorted fibre reinforced composite material can improve certain property of Single Fiber material in conjunction with the advantages of different fibers
Energy.Carbon fiber has light weight, high-intensitive, high-modulus, corrosion-resistant to wait excellent properties, but carbon fiber elongation at break is low, is easy
Catastrophic brittle break occurs, seriously reduces the structural strength of composite material.Meta-aramid fibre fibrid, which is not only broken, to be stretched
Long rate is high, and intensity is big, and modulus is high, and has excellent thermal stability, anti-flammability and insulating properties.Carbon fibre reinforced composite
Intensity be heavily dependent on the cohesive force between carbon fiber and matrices of composite material, but carbon fiber and meta-aramid precipitating
Fiber surface activity is poor, and chemical inertness is strong, is not easy to disperse in water, causes its paper base evenness poor, paper structure is loose, it is difficult to send out
Wave the excellent properties of carbon fiber and meta-aramid fibre fibrid.Therefore when preparing composite material, surface need to be carried out to carbon fiber
It is modified to improve its surface-active, drops low-surface-energy.Meta-aramid fibre fibrid is dissolved to fill the hole in paper structure,
To there is the combination using carbon fiber and meta-aramid fibre fibrid.
Carbon fiber/meta-aramid fibre fibrid paper-based composite material can make full use of carbon fiber and meta-aramid precipitating fine
The advantage of dimension prepares high-strength, corrosion-resistant, high temperature resistant, and conductive, waterproof is transparent, the composite material of lightweight.By to carbon fiber,
Meta-aramid fibre fibrid surface treatment, improves its surface-active and hydrophily.By being added dropwise DMAc/LiCl solution in carbon
On fiber/meta-aramid fibre fibrid composite base paper, dissolves meta-aramid fibre fibrid gradually and be dispersed in paper structure
In, it is filled with the gap in paper structure.By to dissolved carbon fiber/meta-aramid fibre fibrid composite base paper hot pressing,
So that interfibrous combination is closer, so that the mechanical performance of paper-based composite material greatly promotes.
It is fine that Chinese invention patent application 201810392200.4 discloses a kind of modified carbon fiber/nanometer meta-aramid precipitating
The composite material and preparation method of dimension.This method is modified carbon fiber using dopamine, enhances the viscous of carbon fiber surface
Resultant force and hydrophily；The aramid fiber that is chopped will be aligned to be added in DMSO solution, stir, alkali solid powder is added, stir, filtering
Gained precipitating is nanometer aramid fiber；Nanometer aramid fiber is blended with carbon fiber, vacuum filtration obtains carbon fiber/nanometer virtue
Synthetic fibre fibrous composite.This kind of method uses dopamine modified carbon fiber, and modifying process is milder, nontoxic and pollution-free；Using receiving
Rice aramid fiber replaces para-aramid fiber, is conducive to aramid fiber in the deposition of carbon fiber surface, is conducive to give full play to carbon
The synergistic effect of fiber and para-aramid fiber.But it is more long that para-aramid fiber is prepared into nanometer aramid fiber time-consuming, improves
Cost of material and time cost；The invention simultaneously prepares carbon fiber/nanometer aramid fiber composite wood using vacuum filtration technology
Material, vacuum filtration technology is also the more long work of time-consuming.The inventive method preparation efficiency is lower, not can solve the prior art
Requirement to the upgrading of carbon fibre composite rapid shaping technique.Meanwhile carbon fiber/nanometer aramid fiber of this method preparation
Composite material average tensile strength optimal value is 26.305N, stress value 18.746MPa, and mechanical property is also difficult to meet boat
Empty space flight, the fields special requirement such as railway transportation.
Summary of the invention
It is of the existing technology the purpose of the present invention is overcoming the problems, such as, a kind of high-performance carbon fibre meta-aramid precipitating is provided
The preparation method of fiber paper base composite material, for this method while significantly improving production efficiency, prepared composite material is flat
Equal tensile strength reaches 33.91~56.14Mpa, and stress value reaches 40.47~62.38Mpa, and contact angle is 108 °~120 °, resistance to
360~400 DEG C of high temperature, and there is good electrical and thermal conductivity performance, compared with prior art with the promotion of matter, it can satisfy boat
Empty space flight and the enhancing of railway transportation special dimension need.
Carbon fiber is mixed copy paper with meta-aramid fibre fibrid by the present invention, by DMAc/LiCl solution be added dropwise carbon fiber/
On meta-aramid fibre fibrid composite base paper, dissolve meta-aramid fibre fibrid, then hot-pressing drying is up to high-performance carbon fiber
Dimension/meta-aramid fibre fibrid paper-based composite material.The present invention prepares paper-based composite material with quick sheet forming technology, operation
Simply, work efficiency is high, and DMAc/LiCl solution is added dropwise and answers in carbon fiber/meta position meta-aramid fibre fibrid by the present invention
It closes on body paper, it is only necessary to which 1h can dissolve meta-aramid fibre fibrid.Carbon fiber/meta-aramid fibre fibrid prepared by the present invention
The average tensile strength of paper-based composite material is 56.14Mpa, and stress value 62.38Mpa, resistance to 400 DEG C of high temperature, water absorption rate is low
Water repelling property is good, and has good electrical and thermal conductivity performance.
Carbon fiber/aramid fiber reinforced composite method is prepared at present mainly by carbon fiber and nanometer aramid fiber vacuum
It filters and is made.Carbon fiber/aramid fiber reinforced composite good mechanical performance of this method preparation, hydrophobicity are good.But this side
Method preparation process is cumbersome, and working efficiency is low, limits the industrialization of carbon fiber/aramid fiber reinforced composite.The present invention uses property
Carbon fiber is mixed with meta-aramid fibre fibrid and is copied as raw material by carbon fiber and meta-aramid fibre fibrid that can be excellent
Then DMAc/LiCl solution is added dropwise on carbon fiber/meta-aramid fibre fibrid composite base paper, makes meta-aramid precipitating by paper
Fibrinolysis, hot-pressing drying prepare high-performance carbon fibre/aramid fiber paper-based composite material.Between the carbon fiber of this method preparation
Position aramid fiber fibrid paper-based composite material has good chemical stability and thermal stability, excellent conduction and thermal conductivity
Can, higher mechanical strength.
The purpose of the present invention is achieved through the following technical solutions:
High-performance carbon fibre/meta-aramid fibre fibrid paper-based composite material preparation method, includes the following steps and work
Skill condition:
(1) surface treatment of carbon fiber: dehydrated alcohol Treatment of Carbon is used；It is molten using concentrated nitric acid under the conditions of 20~70 DEG C
Liquid carries out oxide etch processing to carbon fiber surface；
(2) modification of carbon fiber: based on parts by weight, 1~5 part of silane coupling agent is placed on 500~1000 parts of deionizations
In water, the coupling agent after hydrolysis is mixed 30~60min with the carbon fiber of step (1) by heating；
(3) drying of carbon fiber: the modifying agent of carbon fiber surface is cleaned up with deionized water, dry；
(4) dispersion of carbon fiber: based on parts by weight, carbon fiber obtained by 1~5 part of step (3) is put into 1000~5000
In part water, carbon fiber suspension is prepared；Hydroxyethyl cellulose is added in carbon fiber suspension as dispersing agent, is dredged with fluffer
Solution；
(5) dispersion of meta-aramid fibre fibrid: 1~10 part of meta-aramid fibre fibrid will be added based on parts by weight
Enter in 1000~10000 parts of water, be prepared into suspension, discongests dispersion with fluffer；
(6) carbon fiber/meta-aramid fibre fibrid composite base paper preparation: by the carbon fiber suspension of step (4) and step
Suddenly the meta-aramid fibre fibrid suspension of (5) is blended, copy paper；
(7) based on parts by weight, 1~5 part of anhydrous LiCl is added in 50~100 parts of DMAc solution, is stirred at room temperature
It mixes, DMAc/LiCl solution is made；
(8) dissolution of carbon fiber/meta-aramid fibre fibrid composite base paper regenerates: fine in carbon fiber/meta-aramid precipitating
It ties up and DMAc/LiCl solution is added dropwise on composite base paper surface, place it in air, the meta-aramid fibre fibrid in paper base is molten
Solution；Heating evaporation DMAc solution, dissolved meta-aramid fibre fibrid regeneration；
(9) carbon fiber/meta-aramid fibre fibrid paper-based composite material preparation: will dissolution regeneration after carbon fiber/
Position aramid fiber fibrid paper base is put into hot-pressing drying in hot press.
To further realize the object of the invention, it is preferable that described to be with the processing time of dehydrated alcohol Treatment of Carbon
0.5~4h, the concentrated nitric acid mass concentration are 50%~70%, and the concentrated nitric acid processing time is 0.5~4h.
Preferably, the silane coupling agent is N- β-(aminoethyl)-γ-aminopropyltriethoxy dimethoxysilane
(KH602), mercaptopropyl trimethoxy silane (KH590) and three 13 fluoro- N- octyl silane of ethoxy -1H, 1H, 2H, 2H-
(F8261) one or more, coupling agent dosage is the 20%~50% of over dry carbon fiber quality；Heating described in step (2)
Temperature is 20~100 DEG C, and the time of heating is 1~60min.
Preferably, in step (3), the drying is to be put into drying in vacuum drying box, and drying temperature is 60 DEG C~150
DEG C, drying time is 1~60min；In step (8), the heating evaporation DMAc solution is to be transferred to dissolved paper
It is carried out in air dry oven, the temperature of heating evaporation is 80~150 DEG C, and the time of heating evaporation is 1~30min；Step (8)
In, the dissolution time is 0.5~1h.
Preferably, in step (4), the hydroxyethyl cellulose additional amount be over dry carbon fiber content 0.01~
0.03%；The revolution that the fluffer is discongested is 10000~30000r, revolving speed 6000rpm.
Preferably, the mass ratio of the over dry carbon fiber and over dry meta-aramid fibre fibrid is 1:1~1:9.
Preferably, in step (7), the stirring is magnetic agitation.
Preferably, in step (9), the hot pressing temperature is 150~250 DEG C, and hot pressing pressure is 1~10MPa, when hot pressing
Between be 1~20min.
A kind of high-performance carbon fibre/meta-aramid fibre fibrid paper-based composite material, is made by above-mentioned preparation method.
Preferably, the paper-based composite material average tensile strength is 33.91~56.14Mpa, stress value 40.47
~62.38Mpa, contact angle are 108 °~120 °, resistance to 360~400 DEG C of high temperature, and have good electrical and thermal conductivity performance.
The carbon fiber and meta-aramid fibre fibrid that the present invention uses function admirable are as raw material, by carbon fiber and meta position
Aramid fiber fibrid mixes copy paper, and then DMAc/LiCl solution is added dropwise in carbon fiber/meta-aramid fibre fibrid composite base paper
On, dissolve meta-aramid fibre fibrid, hot-pressing drying is up to high-performance carbon fibre/meta-aramid fibre fibrid paper base composite wood
Material.
Compared with prior art, the present invention has the advantage that
1. the present invention is mixed carbon fiber with meta-aramid fibre fibrid using quick sheet forming technology, it is only necessary to 1~
2min can be formed, and patent of invention 201810392200.4 needs 8~12h just plastic using vacuum filter technology.With
The prior art is compared, and present invention substantially reduces the times of composite molding to improve work efficiency.Meet the prior art
Demand to the upgrading of carbon fibre composite rapid shaping technique.
2. the DMAc/LiCl solution that the present invention uses is a kind of extraordinary solvent, it is only necessary to which 1h can be by meta-aramid
Fibrid dissolves and is filled in it in hole of paper structure.And the prior art 201810392200.4 is fine by p-aramid fiber
Dimension mixes after being prepared into nanometer aramid fiber with carbon fiber, and para-aramid fiber is prepared into a nanometer aramid fiber and is generally required
4~7 days time, this is a very time-consuming and cumbersome process, leverages working efficiency, affects its industry metaplasia
It produces.
3. the present invention by hot pressing carbon fiber/meta-aramid fibre fibrid composite base paper, can not only be dried but also
Hot-pressing technique greatly strengthens carbon fiber/meta-aramid fibre fibrid composite base paper mechanical strength, compared with prior art, this
The mechanical strength of invention is doubled, and is more advantageous to carbon fibre composite in aerospace, the enhancing of the fields such as railway transportation
The application of aspect.
Specific embodiment
In order to more deeply understand the present invention, below with reference to embodiment, the present invention is further illustrated, needs to illustrate
, the scope of protection of present invention is not limited to the scope of the embodiments.
The average tensile strength test method of paper-based composite material is GB/T 36264-2018 in embodiment, and stress value is surveyed
Method for testing is GB/T 35465.2-2017, and contact angle test method is GB/T 30447-2013.
Embodiment 1
(1) surface treatment of carbon fiber: dehydrated alcohol Treatment of Carbon 2h is used, to remove its surface impurity；In 40 DEG C of items
The concentrated nitric acid solution for the use of mass concentration being 65% under part carries out oxide etch to carbon fiber surface and handles 1.5h, to improve carbon fiber
Tie up surface-active；
(2) modification of carbon fiber: taking 0.4g over dry carbon fiber, and 0.1g mercaptopropyl trimethoxy silane (KH590) is even
Connection agent is put into 50g water, and heating is fully hydrolyzed silane coupling agent, and the temperature of heating is 50 DEG C, and the time of heating is 30min,
By coupling agent and the carbon fiber mixing 30min of step (1) after hydrolysis；
(3) drying of carbon fiber: the modifying agent of carbon fiber surface is cleaned up with deionized water, is put into drying box and is done
Dry, wherein drying temperature is 80 DEG C, drying time 30min；
(4) dispersion of carbon fiber: 0.1g over dry carbon fiber is added in 100g water, carbon fiber suspension is prepared；In carbon fiber
It ties up and 0.02g over dry hydroxyethyl cellulose is added in suspension as dispersing agent, discongested with fluffer, discongesting revolution is 10000r,
Revolving speed is 6000rpm；
(5) dispersion of meta-aramid fibre fibrid: 0.9g over dry meta-aramid fibre fibrid is added in 900g water, preparation
At suspension, dispersion is discongested with fluffer, discongesting revolution is 1,0000r, revolving speed 6000rpm；
(6) carbon fiber/meta-aramid fibre fibrid composite base paper preparation: by the carbon fiber suspension of step (4) and step
Suddenly the meta-aramid fibre fibrid suspension of (5) is blended, copy paper, wherein over dry carbon fiber and over dry meta-aramid fibre fibrid
Mass ratio is 1:9；
(7) the anhydrous LiCl of 5g is added in 95g DMAc, is stirred at room temperature with magnetic stirrer, DMAc/ is made
LiCl solution；
(8) dissolution of carbon fiber/meta-aramid fibre fibrid composite base paper regenerate: step (6) resulting carbon fiber/
The resulting DMAc/LiCl solution of a dropping step (7) on the aramid fiber fibrid composite base paper surface of position, wherein DMAc/LiCl solution
Dosage is dropwise addition 0.5g every square centimeter.0.5h in air is placed it in, the meta-aramid fibre fibrid in paper base is dissolved；It will
Dissolved paper is transferred to heating evaporation DMAc solution in air dry oven, so that dissolved meta-aramid fibre fibrid is again
It is raw；
(9) carbon fiber/meta-aramid fibre fibrid paper-based composite material preparation: by the carbon fiber meta position after dissolution regeneration
Aramid fiber fibrid paper base is put into hot-pressing drying in hot press, and wherein hot pressing temperature is 150 DEG C, hot pressing pressure 4MPa, hot pressing
Time is 10min.
After tested, carbon fiber/meta-aramid fibre fibrid paper-based composite material average tensile strength is 47.68Mpa (GB/
T36264-2018), stress value is 56.46Mpa (GB/T 35465.2-2017), and contact angle is 118 ° of (GB/T 30447-
2013), (using the thermal property of thermogravimetric analyzer COMPOSITE MATERIALS, test temperature range is 20~700 to resistance to 400 DEG C of high temperature
DEG C, the rate of heat addition is 10 DEG C/min, and it is 20ml/min that air, which purges flow velocity).
Carbon fiber is mixed copy paper with meta-aramid fibre fibrid by the present invention, by DMAc/LiCl solution be added dropwise carbon fiber/
On meta-aramid fibre fibrid composite base paper, dissolve meta-aramid fibre fibrid, then hot-pressing drying is up to high-performance carbon fiber
Dimension/meta-aramid fibre fibrid paper-based composite material.Chinese invention patent application 201810392200.4 is will to align the virtue that is chopped
Synthetic fibre fiber is prepared into a nanometer aramid fiber, and then nanometer aramid fiber is blended with carbon fiber, prepares carbon by suction filtration technology
Fiber/nanometer meta-aramid fibre fibrid composite material.The present invention and 201810392200.4 phase of Chinese invention patent application
Than meta-aramid fibre fibrid is directly mixed copy paper with carbon fiber, without preparing nanometer aramid fiber, is reduced by a relatively large margin
Process costs, it is easy to operate, it is high-efficient；The present invention is only to need 1~2min just by carbon fiber using quick sheet forming technology simultaneously
Dimension is mixed with meta-aramid fibre fibrid, relative to film technique (the general film forming that filters needs 8~12h) is filtered, is greatly reduced
Preparation time, significantly improves working efficiency；The present invention selects carbon fiber and meta-aramid fibre fibrid as raw material, phase
For para-aramid fiber, price reduction half reduces cost of material.
Carbon fiber prepared by the present invention/meta-aramid fibre fibrid paper-based composite material average tensile strength is
56.14Mpa, stress value 62.38Mpa are higher than mechanical performance possessed by the prior art.Carbon fibre composite is in light rail car
Application on body is conducive to mitigate light rail car body weight, reduces energy consumption when train operation.Use carbon fibre composite
The rail traffic vehicles roof of manufacture can make the significant loss of weight of rail vehicle under the premise of meeting the requirement of vehicle running environment, with
Same type stainless steel material shell is compared, and quality can reduce about 65%, and compared with same type aluminum alloy materials shell, quality can subtract
Light about 30%.The present invention selects meta-aramid fibre fibrid to replace para-aramid fiber, reduces cost of material；Using quick paper
Page forming technique mixes carbon fiber with meta-aramid fibre fibrid, improves carbon fibre composite molding time, improves
Working efficiency；Meta-aramid fibre fibrid is dissolved using DMAc/LiCl solution, is conducive to meta-aramid fibre fibrid filling carbon
The gap of fiber gives full play to the synergistic effect of carbon fiber and para-aramid fiber, and DMAc/LiCl solution dissolution meta position virtue
The synthetic fibre fibrid time is fast, high-efficient.In conclusion carbon fiber prepared by the present invention/meta-aramid fibre fibrid paper base is multiple
Condensation material solves the improvement that the prior art upgrades carbon fibre composite rapid shaping technique and to reduce carbon fiber multiple
The cost problem of condensation material production.
Embodiment 2
(1) surface treatment of carbon fiber: dehydrated alcohol Treatment of Carbon 2.5h is used, to remove its surface impurity；At 50 DEG C
Under the conditions of using mass concentration be 60% concentrated nitric acid solution to carbon fiber surface carry out oxide etch handle 2h, to improve carbon fiber
Tie up surface-active；
(2) modification of carbon fiber: taking 0.4g over dry carbon fiber, by 0.2gN- β-(aminoethyl)-γ-aminopropyltriethoxy diformazan
Oxysilane (KH602) coupling agent is put into 100g water, and heating is fully hydrolyzed silane coupling agent, and the temperature of heating is 55 DEG C,
The time of heating is 35min, by coupling agent and the carbon fiber mixing 45min of step (1) after hydrolysis；
(3) drying of carbon fiber: the modifying agent of carbon fiber surface is cleaned up with deionized water, is put into drying box and is done
Dry, wherein drying temperature is 85 DEG C, drying time 25min；
(4) dispersion of carbon fiber: 0.2g over dry carbon fiber is added in 200g water, carbon fiber suspension is prepared；In carbon fiber
It ties up and 0.03g over dry hydroxyethyl cellulose is added in suspension as dispersing agent, discongested with fluffer, discongesting revolution is 20000r,
Revolving speed is 6000rpm；
(5) dispersion of meta-aramid fibre fibrid: 0.8g over dry meta-aramid fibre fibrid is added in 800g water, preparation
At suspension, dispersion is discongested with fluffer, discongesting revolution is 15000r, revolving speed 6000rpm；
(6) carbon fiber/meta-aramid fibre fibrid composite base paper preparation: by the carbon fiber suspension of step (4) and step
Suddenly the meta-aramid fibre fibrid suspension of (5) is blended, copy paper, wherein over dry carbon fiber and over dry meta-aramid fibre fibrid
Mass ratio is 2:8；
(7) the anhydrous LiCl of 8g is added in 92g DMAc, is stirred at room temperature with magnetic stirrer, DMAc/ is made
LiCl solution；
(8) dissolution of carbon fiber/meta-aramid fibre fibrid composite base paper regenerate: step (6) resulting carbon fiber/
The resulting DMAc/LiCl solution of a dropping step (7) on the aramid fiber fibrid composite base paper surface of position, wherein DMAc/LiCl solution
Dosage is dropwise addition 0.6g every square centimeter, places it in 0.5h in air, and the meta-aramid fibre fibrid in paper base is dissolved；It will
Dissolved paper is transferred to heating evaporation DMAc solution in air dry oven, so that dissolved meta-aramid fibre fibrid is again
It is raw；
(9) carbon fiber/meta-aramid fibre fibrid paper-based composite material preparation: by the carbon fiber meta position after dissolution regeneration
Aramid fiber fibrid paper base is put into hot-pressing drying in hot press, and wherein hot pressing temperature is 180 DEG C, hot pressing pressure 6MPa, hot pressing
Time is 15min.
After tested, carbon fiber/meta-aramid fibre fibrid paper-based composite material average tensile strength is 56.14Mpa, stress
Value is 62.38Mpa, and contact angle is 120 °, resistance to 380 DEG C of high temperature.
Embodiment 3
(1) surface treatment of carbon fiber: dehydrated alcohol Treatment of Carbon 2.5h is used, to remove its surface impurity；At 55 DEG C
Under the conditions of using mass concentration be 70% concentrated nitric acid solution to carbon fiber surface carry out oxide etch handle 2h, to improve carbon fiber
Tie up surface-active；
(2) modification of carbon fiber: taking 0.5g over dry carbon fiber, and 0.2g mercaptopropyl trimethoxy silane (KH590) is even
Connection agent is put into 200g water, and heating is fully hydrolyzed silane coupling agent, and the temperature of heating is 60 DEG C, and the time of heating is 35min,
By coupling agent and the carbon fiber mixing 50min of step (1) after hydrolysis；
(3) drying of carbon fiber: the modifying agent of carbon fiber surface is cleaned up with deionized water, is put into drying box and is done
Dry, wherein drying temperature is 90 DEG C, drying time 20min；
(4) dispersion of carbon fiber: 0.3g over dry carbon fiber is added in 300g water, carbon fiber suspension is prepared；In carbon fiber
It ties up and 0.04g over dry hydroxyethyl cellulose is added in suspension as dispersing agent, discongested with fluffer, discongesting revolution is 15000r,
Revolving speed is 6000rpm；
(5) dispersion of meta-aramid fibre fibrid: 0.7g over dry meta-aramid fibre fibrid is added in 700g water, preparation
At suspension, dispersion is discongested with fluffer, discongesting revolution is 20000r, revolving speed 6000rpm；
(6) carbon fiber/meta-aramid fibre fibrid composite base paper preparation: by the carbon fiber suspension of step (4) and step
Suddenly the meta-aramid fibre fibrid suspension of (5) is blended, copy paper, wherein over dry carbon fiber and over dry meta-aramid fibre fibrid
Mass ratio is 3:7；
(7) the anhydrous LiCl of 10g is added in 90g DMAc, is stirred at room temperature with magnetic stirrer, DMAc/ is made
LiCl solution；
(8) dissolution of carbon fiber/meta-aramid fibre fibrid composite base paper regenerate: step (6) resulting carbon fiber/
The resulting DMAc/LiCl solution of a dropping step (7) on the aramid fiber fibrid composite base paper surface of position, wherein DMAc/LiCl solution
Dosage is dropwise addition 0.8g every square centimeter, places it in 0.6h in air, and the meta-aramid fibre fibrid in paper base is dissolved；It will
Dissolved paper is transferred to heating evaporation DMAc solution in air dry oven, so that dissolved meta-aramid fibre fibrid is again
It is raw；
(9) carbon fiber/meta-aramid fibre fibrid paper-based composite material preparation: by the carbon fiber meta position after dissolution regeneration
Aramid fiber fibrid paper base is put into hot-pressing drying in hot press, and wherein hot pressing temperature is 200 DEG C, hot pressing pressure 8MPa, hot pressing
Time is 10min.
After tested, carbon fiber/meta-aramid fibre fibrid paper-based composite material average tensile strength is 36.14Mpa, stress
Value is 42.38Mpa, and contact angle is 110 °, resistance to 370 DEG C of high temperature.
Embodiment 4
(1) surface treatment of carbon fiber: dehydrated alcohol Treatment of Carbon 3h is used, to remove its surface impurity；In 70 DEG C of items
The concentrated nitric acid solution for the use of mass concentration being 60% under part carries out oxide etch to carbon fiber surface and handles 2h, to improve carbon fiber
Surface-active；
(2) modification of carbon fiber: taking 0.5g over dry carbon fiber, and tri- 13 fluoro- N- of ethoxy -1H, 1H, 2H, 2H- of 0.2g are pungent
Base silane (F8261) coupling agent is put into 200g water, and heating is fully hydrolyzed silane coupling agent, and the temperature of heating is 60 DEG C, is added
The time of heat is 35min, by coupling agent and the carbon fiber mixing 60min of step (1) after hydrolysis；
(3) drying of carbon fiber: the modifying agent of carbon fiber surface is cleaned up with deionized water, is put into drying box and is done
Dry, wherein drying temperature is 100 DEG C, drying time 20min；
(4) dispersion of carbon fiber: 0.4g over dry carbon fiber is added in 400g water, carbon fiber suspension is prepared；In carbon fiber
It ties up and 0.02g over dry hydroxyethyl cellulose is added in suspension as dispersing agent, discongested with fluffer, discongesting revolution is 20000r,
Revolving speed is 6000rpm；
(5) dispersion of meta-aramid fibre fibrid: 0.6g over dry meta-aramid fibre fibrid is added in 600g water, preparation
At suspension, dispersion is discongested with fluffer, discongesting revolution is 20000r, revolving speed 6000rpm；
(6) carbon fiber/meta-aramid fibre fibrid composite base paper preparation: by the carbon fiber suspension of step (4) and step
Suddenly the meta-aramid fibre fibrid suspension of (5) is blended, copy paper, wherein over dry carbon fiber and over dry meta-aramid fibre fibrid
Mass ratio is 4:6；
(7) the anhydrous LiCl of 12g is added in 88g DMAc, is stirred at room temperature with magnetic stirrer, DMAc/ is made
LiCl solution；
(8) dissolution of carbon fiber/meta-aramid fibre fibrid composite base paper regenerate: step (6) resulting carbon fiber/
The resulting DMAc/LiCl solution of a dropping step (7) on the aramid fiber fibrid composite base paper surface of position, wherein DMAc/LiCl solution
Dosage is dropwise addition 1g every square centimeter, places it in 0.6h in air, and the meta-aramid fibre fibrid in paper base is dissolved；It will be molten
Paper after solution is transferred to heating evaporation DMAc solution in air dry oven, so that dissolved meta-aramid fibre fibrid is again
It is raw；
(9) carbon fiber/meta-aramid fibre fibrid paper-based composite material preparation: by the carbon fiber meta position after dissolution regeneration
Aramid fiber fibrid paper base is put into hot-pressing drying in hot press, and wherein hot pressing temperature is 220 DEG C, hot pressing pressure 10MPa, hot pressing
Time is 20min.
After tested, carbon fiber/meta-aramid fibre fibrid paper-based composite material average tensile strength is 33.91Mpa, stress
Value is 40.47Mpa, and contact angle is 108 °, resistance to 360 DEG C of high temperature.
The present invention is not constrained by above-described embodiment, and others are any to be made without departing from the spirit and principles of the present invention
Changes, modifications, substitutions, combinations, simplifications, should be equivalent alternative, be included within the scope of the present invention.
Claims (10)
1. high-performance carbon fibre/meta-aramid fibre fibrid paper-based composite material preparation method, it is characterised in that including as follows
Step and process conditions:
(1) surface treatment of carbon fiber: dehydrated alcohol Treatment of Carbon is used；Concentrated nitric acid solution pair is used under the conditions of 20~70 DEG C
Carbon fiber surface carries out oxide etch processing；
(2) modification of carbon fiber: based on parts by weight, 1~5 part of silane coupling agent being placed in 500~1000 parts of deionized waters,
Heating, mixes 30~60min with the carbon fiber of step (1) for the coupling agent after hydrolysis；
(3) drying of carbon fiber: the modifying agent of carbon fiber surface is cleaned up with deionized water, dry；
(4) dispersion of carbon fiber: based on parts by weight, carbon fiber obtained by 1~5 part of step (3) is put into 1000~5000 parts of water
In, prepare carbon fiber suspension；Hydroxyethyl cellulose is added in carbon fiber suspension as dispersing agent, is discongested with fluffer；
(5) dispersion of meta-aramid fibre fibrid: 1~10 part of meta-aramid fibre fibrid will be added based on parts by weight
In 1000~10000 parts of water, it is prepared into suspension, discongests dispersion with fluffer；
(6) carbon fiber/meta-aramid fibre fibrid composite base paper preparation: by the carbon fiber suspension of step (4) and step (5)
Meta-aramid fibre fibrid suspension be blended, copy paper；
(7) based on parts by weight, 1~5 part of anhydrous LiCl is added in 50~100 parts of DMAc solution, is stirred at room temperature, made
Obtain DMAc/LiCl solution；
(8) dissolution of carbon fiber/meta-aramid fibre fibrid composite base paper regenerates: multiple in carbon fiber/meta-aramid fibre fibrid
It closes and DMAc/LiCl solution is added dropwise on body paper surface, place it in air, the meta-aramid fibre fibrid in paper base is dissolved；
Heating evaporation DMAc solution, dissolved meta-aramid fibre fibrid regeneration；
(9) carbon fiber/meta-aramid fibre fibrid paper-based composite material preparation: by the carbon fiber after dissolution regeneration/meta position virtue
Synthetic fibre fibrid paper base is put into hot-pressing drying in hot press.
2. high-performance carbon fibre according to claim 1/meta-aramid fibre fibrid paper-based composite material preparation method,
It is characterized in that, the processing time with dehydrated alcohol Treatment of Carbon is 0.5~4h, the concentrated nitric acid mass concentration
It is 50%~70%, the concentrated nitric acid processing time is 0.5~4h.
3. high-performance carbon fibre according to claim 1/meta-aramid fibre fibrid paper-based composite material preparation method,
It is characterized in that, the silane coupling agent is N- β-(aminoethyl)-γ-aminopropyltriethoxy dimethoxysilane (KH602), sulphur
Base propyl trimethoxy silicane (KH590) and the fluoro- N- octyl silane (F8261) of three ethoxy -1H, 1H, 2H, 2H- 13 it is a kind of or
A variety of, coupling agent dosage is the 20%~50% of over dry carbon fiber quality；The temperature of heating described in step (2) is 20~100
DEG C, the time of heating is 1~60min.
4. high-performance carbon fibre according to claim 1/meta-aramid fibre fibrid paper-based composite material preparation method,
It is characterized in that, the drying is to be put into drying in vacuum drying box, and drying temperature is 60 DEG C~150 DEG C in step (3),
Drying time is 1~60min；In step (8), the heating evaporation DMAc solution is that dissolved paper is transferred to air blast
It is carried out in drying box, the temperature of heating evaporation is 80~150 DEG C, and the time of heating evaporation is 1~30min；In step (8), institute
The dissolution time stated is 0.5~1h.
5. high-performance carbon fibre according to claim 1/meta-aramid fibre fibrid paper-based composite material preparation method,
It is characterized in that, the hydroxyethyl cellulose additional amount is the 0.01~0.03% of over dry carbon fiber content in step (4)；
The revolution that the fluffer is discongested is 10000~30000r, revolving speed 6000rpm.
6. high-performance carbon fibre according to claim 1/meta-aramid fibre fibrid paper-based composite material preparation method,
It is characterized in that, the mass ratio of the over dry carbon fiber and over dry meta-aramid fibre fibrid is 1:1~1:9.
7. high-performance carbon fibre according to claim 1/meta-aramid fibre fibrid paper-based composite material preparation method,
It is characterized in that, the stirring is magnetic agitation in step (7).
8. high-performance carbon fibre according to claim 1/meta-aramid fibre fibrid paper-based composite material preparation method,
It is characterized in that, the hot pressing temperature is 150~250 DEG C, and hot pressing pressure is 1~10MPa, and hot pressing time is in step (9)
1~20min.
9. a kind of high-performance carbon fibre/meta-aramid fibre fibrid paper-based composite material, which is characterized in that it is by claim 1-
Any one of 8 preparation methods are made.
10. high-performance carbon fibre according to claim 9/meta-aramid fibre fibrid paper-based composite material, feature exist
In the paper-based composite material average tensile strength is 33.91~56.14Mpa, and stress value is 40.47~62.38Mpa, is connect
Feeler is 108 °~120 °, resistance to 360~400 DEG C of high temperature, and has good electrical and thermal conductivity performance.
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| CN113584940A (en) * | 2021-06-24 | 2021-11-02 | 浙江超探碳纤维科技有限公司 | Preparation method of carbon fiber paper |
| CN114561831A (en) * | 2022-02-24 | 2022-05-31 | 陕西科技大学 | Carbon fiber paper with electromagnetic loss capability enhanced by silicon carbide and preparation method thereof |
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