CN106811847A - A kind of fiber reinforced thermolplastic composite material mixed fiber yarn and preparation method thereof - Google Patents
A kind of fiber reinforced thermolplastic composite material mixed fiber yarn and preparation method thereof Download PDFInfo
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- CN106811847A CN106811847A CN201510872843.5A CN201510872843A CN106811847A CN 106811847 A CN106811847 A CN 106811847A CN 201510872843 A CN201510872843 A CN 201510872843A CN 106811847 A CN106811847 A CN 106811847A
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/02—Preparation of spinning solutions
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
- D01D5/0084—Coating by electro-spinning, i.e. the electro-spun fibres are not removed from the collecting device but remain integral with it, e.g. coating of prostheses
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/06—Wet spinning methods
-
- 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
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2101/00—Inorganic fibres
- D10B2101/10—Inorganic fibres based on non-oxides other than metals
- D10B2101/12—Carbon; Pitch
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/10—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
Abstract
The present invention provides a kind of fiber reinforced thermolplastic composite material mixed fiber yarn and preparation method thereof, the mixed fiber yarn is made up of parallel-oriented reinforcing fiber with the shuffling yarn of randomly-oriented thermoplastic nanofibers' fiber, a diameter of 1~30 μm of the reinforcing fiber, the mass ratio of a diameter of 10~1000nm of thermoplastic nanofibers' fiber, the reinforcing fiber and thermoplastic nanofibers' fiber is 1:9~9:1；The preparation method of the mixed fiber yarn is comprised the following steps：(1) the reinforcing fiber bundles parallel arrangement of creel conveying is made with feed carrier；(2) with the mixed yarn feeding device by thermoplastic nanofibers' fiber and reinforcing fiber bundles shuffling into mixed fiber yarn；(3) mixed fiber yarn is collected using fiber wrap-up.When mixed fiber yarn of the invention is used for the preparation of fiber reinforced thermolplastic composite material, nanoscale thermoplastic fibre has more preferable dipping effect to reinforcing fiber in forming process, and preparation method of the present invention is simply controllable, applied widely.
Description
Technical field
The present invention relates to a kind of Commingled Yarn for Composites, and in particular to a kind of fiber reinforced thermolplastic composite material
With mixed fiber yarn and preparation method thereof.
Background technology
Continuous fiber reinforced thermoplastic composite material have compared with same with thermosetting compound material toughness of material it is good, can two
Secondary processing, facilitates the advantages such as recovery is reprocessed and matrix plastic is wide in variety, choice is big.But, its presence
Plastics melting material viscosity is big, the problems such as be unfavorable for processing and forming.
The problems such as in order to solve big viscosity during thermoplastic plastics shaping and reinforcing fiber wellability difference, people
Continuous fiber and thermoplastic fibre carried out into mixed yarn be made mixed fiber yarn, to be applied to follow-up composite system
It is standby.Such as Chinese invention patent CN103601973A discloses a kind of reinforcing fiber and thermoplastic fiber is mixed
The method of the standby composite of establishment.But, these methods are all by thermoplastic fiber in forming process
Melting realizes its dipping between reinforcing fiber, and the diameter of thermoplastic fiber in micro-scaled range, its
Plastic molten melt yardstick is also micron-sized, therefore, it is also generally the dipping effect of micron-sized reinforcing fiber with diameter
Fruit is not very good.
Research shows that the melt temperature of the thermoplastic of nano-scale will be less than the otherwise identical plastic of micron-scale
Melt temperature.Therefore, by thermoplastic fibre diameter nanosizing, then the melting in its forming process will be more prone to,
Dipping effect at identical temperature to reinforcing fiber will be more preferable.
The content of the invention
It is an object of the invention to provide a kind of fiber reinforced thermolplastic composite material mixed fiber yarn and preparation method thereof.
Thermoplastic nanofibers' fiber and reinforcing fiber are carried out into shuffling by way of electrostatic spinning, the mixed fiber yarn is used for fibre
During the preparation of dimension enhancing thermoplastic composite, nanoscale thermoplastic fibre has to reinforcing fiber in forming process
More preferable dipping effect.
To achieve these goals, the present invention uses following technical scheme：
A kind of fiber reinforced thermolplastic composite material mixed fiber yarn, the mixed fiber yarn is by parallel-oriented reinforcing fiber
Shuffling yarn with randomly-oriented thermoplastic nanofibers' fiber is constituted, a diameter of 1~30 μm of the reinforcing fiber,
The matter of a diameter of 10~1000nm of thermoplastic nanofibers' fiber, the reinforcing fiber and thermoplastic nanofibers' fiber
Amount is than being 1:9~9:1.
First optimal technical scheme of described mixed fiber yarn, the reinforcing fiber be from glass fibre, carbon fiber,
The conjugate fiber of one or more fibers selected in aramid fiber, polyimide fiber and boron fibre.
Second optimal technical scheme of described mixed fiber yarn, thermoplastic nanofibers' fiber is to be received from PEI
Rice fiber, polyphenylene sulfide nanofiber, polyethylene nanofiber, polypropylene nano fiber, polyamide nano are fine
The combination of one or more selected in dimension, polyester nano fiber and polyacrylonitrile nanofiber.
3rd optimal technical scheme of described mixed fiber yarn, the reinforcing fiber is that the carbon being prepared as follows is fine
Dimension：
1) polyacrylonitrile spinning solution is prepared：With mass parts 95：3：The 2 AN acrylonitrile than counting: MA
Methyl acrylate: IA itaconic acids polymerisation at 60 DEG C prepares polyacrylonitrile copolymer, at 40 DEG C
Negative pressure removes monomer；
2) spinning of polyacrylonitrile fibre：Step 1) gained spinning solution through filter spinneret stoste thread at 0 DEG C
Under coagulating bath in cooling shaping gel strand again with 55 DEG C washing；
3) precursor drawing-off：Step 2) gained washing after precursor carried out at 85 DEG C, 90 DEG C and 95 DEG C in succession
Hot water drawing-off, oil, compacting by drying, steam drafting, steam shaping and compacting by drying, obtain PAN former
Silk；
4) PAN carbon fibers are prepared：Step 3) gained PAN precursor pre-oxidations after, then at 500~800 DEG C
Starching after carbonization 0.5-2min, obtains finished product PAN carbon at lower 4-6min and 1000~1500 DEG C of carbonization after drying
Fiber；
5) it is surface-treated：With ammonium bicarbonate soln as electrolyte, electrochemical oxidation is carried out to PAN carbon fibers
Surface treatment, curling obtains PAN carbon fiber finished products.
4th optimal technical scheme of described mixed fiber yarn, thermoplastic nanofibers' fiber is to be prepared as follows
Polyacrylonitrile nanofiber：
1) polyacrylonitrile electrostatic spinning liquid is prepared：With dimethyl sulfoxide by acrylonitrile：Azodiisobutyronitrile：1,4-
Two (2- carbazole -9- dithiocarbonic acids) isobutyl acid phenenyl esters press 2400~4800:0.5:2.5 molar ratio is mixed in
The polyacrylonitrile that obtained average molecular weight is 80000~90000g/mol that is polymerized at 60~80 DEG C is made 14~16%
Electrostatic spinning polyacrylonitrile solution；
2) polyacrylonitrile nanofiber is prepared：Electrostatic spinning voltage be 9~11KV, syringe needle to receiving screen away from
From being 11~13cm, injection speed is 0.19~0.21mm/h.
The quality of the 5th optimal technical scheme of described mixed fiber yarn, the reinforcing fiber and thermoplastic nanofibers' fiber
Than being 1:4~9:1.
A kind of preparation method of the mixed fiber yarn, the preparation method is comprised the following steps：
(1) the reinforcing fiber bundles parallel arrangement of creel conveying is made with feed carrier；
(2) with the mixed yarn feeding device by thermoplastic nanofibers' fiber and reinforcing fiber bundles shuffling into mixed fiber yarn；
(3) mixed fiber yarn is collected using fiber wrap-up.
First optimal technical scheme of its preparation method of the mixed fiber yarn, the mixed yarn feeding device is filled for electrostatic spinning
Put, the shuffling uses electrostatic spinning mode.
Second optimal technical scheme of its preparation method of the mixed fiber yarn, thermoplastic nanofibers are fine in the mixed fiber yarn
Dimension is controlled with the mass ratio of reinforcing fiber by the technological parameter such as spinning time and spinning head quantity.
Described mixed fiber yarn is used to prepare the application of continuous fiber reinforced thermoplastic composite.
Compared with immediate prior art, the present invention has following excellent effect：
1) thermoplastic nanofibers' fiber and reinforcing fiber are mixed yarn, thermoplasticity by the present invention by the way of electrostatic spinning
The mixed volume of nanofiber can be controlled by controlling the spinning techniques such as spinning time, spinning head quantity, because
This, the quality of reinforcing fiber and thermoplastic nanofibers' fiber is stronger than controllability in mixed fiber yarn；
2) melt temperature of nanoscale thermoplastic fiber of the invention is less than conventional micron grade thermoplastic modeling
Material fiber, is more easy to melting in composite material shaping process；Meanwhile, thermoplastic fiber's melt is very easy to
Reinforcing fiber gap is penetrated into, it is preferable to reinforcing fiber dipping effect；
3) in mixed fiber yarn of the present invention the randomly-oriented shuffling of thermoplastic nanofibers' fiber in reinforcing fiber, composite wood
Can be melted to all directions in material forming process, the dipping to reinforcing fiber is more complete；
4) preparation method of the present invention is mixed after can be used for various thermoplastic fiber's electrostatic spinnings with reinforcing fiber
Compile, it is applied widely.
Brief description of the drawings
Fig. 1：The mixed fiber yarn electron microscope of thermoplastic polypropylene nitrile nanofibre and T700 carbon fibers；
Fig. 2：The mixed fiber yarn electron microscope of thermoplastic polyetherimide's nanofiber and T700 carbon fibers；
Fig. 3：The mixed fiber yarn electron microscope of thermoplastic poly polyphenylene sulfide nanofiber and T700 carbon fibers.
Specific embodiment：
With reference to embodiment and accompanying drawing, the present invention is described in detail, but the scope of the present invention is not
It is confined to this.
Embodiment 1
Preparing for thermoplastic polypropylene nitrile nanofibre and carbon fiber mixed fiber yarn is as follows：
1st, the preparation method of the carbon fiber is as follows：
1) polyacrylonitrile spinning solution is prepared：It is 95 with mass ratio：3：2 AN acrylonitrile: MA third
E pioic acid methyl ester: IA itaconic acids carry out polymerisation for raw material under 60 DEG C of normal pressures, prepare polyacrylonitrile copolymerization
Thing, then monomer is removed under 40 DEG C of negative pressure, obtain polyacrylonitrile spinning solution；
2) spinning of polyacrylonitrile fibre：Step 1), through filtering spinneret, spinning head is out for gained spinning solution
Stoste thread in 0 DEG C or so of coagulating bath cooling shaping, the pure water of 55 DEG C of gelatine silk strip adoption after shaping
Washing；
3) precursor drawing-off：Step 2) precursor after gained washing carries out 85 DEG C, 90 DEG C and 95 DEG C of heat successively
Water drawing-off, oil, compacting by drying, steam drafting, steam shaping and compacting by drying, obtain PAN precursor；
4) PAN carbon fibers are prepared：Step 3) gained PAN precursor pre-oxidations, then it is low through 650 DEG C respectively
Starching is carried out after 5min and 1200 DEG C of high temperature cabonization 1min of middle temperature carbonization, finished product PAN carbon is obtained after drying fine
Dimension；
5) it is surface-treated：With ammonium bicarbonate soln as electrolyte, electrochemical oxidation is carried out to PAN carbon fibers
Surface treatment, curling obtains PAN carbon fiber finished products.
2nd, thermoplastic polypropylene nitrile nanofibre and carbon fiber mixed fiber yarn：
1) the PAN carbon fiber bundles on creel by electrostatic spinning apparatus by feed carrier parallel arrangement；
2) thermoplastic polypropylene nitrile nanofibre shuffling prepared by electrostatic spinning forms mixed in reinforcing fiber bundles
Fine yarn；
3) mixed fiber yarn is collected by fiber wrap-up.
The electrostatic spinning liquid for wherein preparing polyacrylonitrile nanofiber is formulated as follows：With dimethyl sulfoxide by acrylonitrile：
Azodiisobutyronitrile：1,4- bis- (2- carbazole -9- dithiocarbonic acids) isobutyl acid phenenyl ester presses 3500:0.5:2.5 mol ratio
Example is mixed at 65 DEG C the polyacrylonitrile that obtained average molecular weight is 80000~90000g/mol that is polymerized and is made 15%
Electrostatic spinning polyacrylonitrile solution；
Electrostatic spinning process parameter：Voltage is 10KV, and the distance of syringe needle to receiving screen is 12cm, injection speed
It is 0.2mm/h to spend.
The diameter of carbon fiber is in 1~30 microns in mixed fiber yarn, polyacrylonitrile nanofiber a diameter of 200~
300nm nanometers, the mass ratio of carbon fiber and polyacrylonitrile nanofiber is 3:2.
Embodiment 2
Preparing for thermoplastic polypropylene nitrile nanofibre and carbon fiber mixed fiber yarn is as follows：
(1) the T700 carbon fiber bundles on creel by electrostatic spinning apparatus by feed carrier parallel arrangement；
(2) thermoplastic polypropylene nitrile nanofibre shuffling prepared by electrostatic spinning is formed in reinforcing fiber bundles
Mixed fiber yarn；
(3) mixed fiber yarn is collected by fiber wrap-up.
The diameter of T700 carbon fibers is in 1~30 microns in mixed fiber yarn, polyacrylonitrile nanofiber it is a diameter of
10~1000 nanometers, the mass ratio of T700 carbon fibers and polyacrylonitrile nanofiber is 9:1.
Fig. 1 is the electron microscope of thermoplastic polypropylene nitrile nanofibre and T700 carbon fiber mixed fiber yarns, can be seen by figure
Go out：Parallel-oriented is T700 carbon fibers, and the randomly-oriented shuffling of polyacrylonitrile nanofiber is fine in T700 carbon
In dimension.
Embodiment 3
Preparing for thermoplastic polyetherimide's nanofiber and carbon fiber mixed fiber yarn is as follows：
(1) T700 carbon fiber bundles on creel by feed carrier parallel arrangement by electrostatic spinning apparatus；
(2) electrostatic spinning apparatus prepare thermoplastic polyetherimide's nanofiber shuffling in reinforcing fiber bundles,
Form mixed fiber yarn；
(3) mixed fiber yarn is collected by fiber wrap-up.
The diameter of T700 carbon fibers is in 1~30 microns, the diameter of PEI nanofiber in mixed fiber yarn
It it is 10~1000 nanometers, the mass ratio of T700 carbon fibers and PEI nanofiber is 3:2.
Fig. 2 is the electron microscope of thermoplastic polyetherimide's nanofiber and T700 carbon fiber mixed fiber yarns, such as figure institute
Show：Parallel-oriented is T700 carbon fibers, and the randomly-oriented shuffling of PEI nanofiber is in T700 carbon
In fiber.
Embodiment 4
Preparing for thermoplastic polyphenylene sulfide's nanofiber and carbon fiber mixed fiber yarn is as follows：
(1) the T700 carbon fiber bundles on creel pass through electrostatic spinning apparatus by feed carrier parallel arrangement；
(2) electrostatic spinning apparatus will prepare thermoplastic polyphenylene sulfide's nanofiber shuffling in reinforcing fiber bundles,
Form mixed fiber yarn；
(3) mixed fiber yarn is collected by fiber wrap-up.
The diameter of T700 carbon fibers is in 1~30 microns in mixed fiber yarn, polyphenylene sulfide nanofiber it is a diameter of
10~1000 nanometers, the mass ratio of T700 carbon fibers and polyphenylene sulfide nanofiber is 1:4.
Fig. 3 is the electron microscope of thermoplastic polyphenylene sulfide's nanofiber and T700 carbon fiber mixed fiber yarns, as shown in the figure：
Parallel-oriented is T700 carbon fibers, and the randomly-oriented shuffling of polyphenylene sulfide nanofiber is in T700 carbon fibers.
Embodiment 1-4 gained hybrid yams are respectively heated using hot press makes described thermoplastic nanofibers' fiber
Melting, thermoplastic nanofibers' fibers melt body is mutually infiltrated with carbon fiber, and thermoplastic reinforcement fibers are formed after cooling
Composite plate, composite plate is inserted in mould, is injected and thermoplastic nanofibers' fiber identical polymer, through adding
Polymer and thermoplastic reinforcement fibers' composite plate fusion that heat is injected after making are integral, after cooling product, institute
The performance for obtaining product is as shown in table 1：
Table 1
The above embodiments are merely illustrative of the technical solutions of the present invention rather than its limitations, the common skill of art
Art personnel should be appreciated that can modify or wait with reference to above-described embodiment to specific embodiment of the invention
With replacing, these are applying for pending without departing from any modification of spirit and scope of the invention or equivalent
Within claims.
Claims (10)
1. a kind of fiber reinforced thermolplastic composite material mixed fiber yarn, it is characterised in that the mixed fiber yarn is by putting down
The reinforcing fiber of row orientation is constituted with the shuffling yarn of randomly-oriented thermoplastic nanofibers' fiber, the reinforcing fiber
A diameter of 1~30 μm, a diameter of 10~1000nm of thermoplastic nanofibers' fiber, the reinforcing fiber and heat
The mass ratio of plasticity nanofiber is 1:9~9:1.
2. mixed fiber yarn according to claim 1, it is characterised in that the reinforcing fiber is from glass fibers
The combination of one or more fibers selected in dimension, carbon fiber, aramid fiber, polyimide fiber and boron fibre
Fiber.
3. mixed fiber yarn according to claim 1, it is characterised in that thermoplastic nanofibers' fiber is from poly-
It is etherimide nanofiber, polyphenylene sulfide nanofiber, polyethylene nanofiber, polypropylene nano fiber, poly-
The combination of one or more selected in acid amides nanofiber, polyester nano fiber and polyacrylonitrile nanofiber.
4. mixed fiber yarn according to claim 2, it is characterised in that the reinforcing fiber is by with lower section
Carbon fiber prepared by method：
1) polyacrylonitrile spinning solution is prepared：With mass parts 95：3：The 2 AN acrylonitrile than counting: MA
Methyl acrylate: IA itaconic acids polymerisation at 60 DEG C prepares polyacrylonitrile copolymer, at 40 DEG C
Negative pressure removes monomer；
2) spinning of polyacrylonitrile fibre：Step 1) gained spinning solution through filter spinneret stoste thread at 0 DEG C
Under coagulating bath in cooling shaping gel strand again with 55 DEG C washing；
3) precursor drawing-off：Step 2) gained washing after precursor carried out at 85 DEG C, 90 DEG C and 95 DEG C in succession
Hot water drawing-off, oil, compacting by drying, steam drafting, steam shaping and compacting by drying, obtain PAN former
Silk；
4) PAN carbon fibers are prepared：Step 3) gained PAN precursor pre-oxidations after, then at 500~800 DEG C
Starching after carbonization 0.5-2min, obtains finished product PAN carbon at lower 4-6min and 1000~1500 DEG C of carbonization after drying
Fiber；
5) it is surface-treated：With ammonium bicarbonate soln as electrolyte, electrochemical oxidation is carried out to PAN carbon fibers
Surface treatment, curling obtains PAN carbon fiber finished products.
5. mixed fiber yarn according to claim 3, it is characterised in that thermoplastic nanofibers' fiber be by
Polyacrylonitrile nanofiber prepared by following methods：
1) polyacrylonitrile electrostatic spinning liquid is prepared：With dimethyl sulfoxide by acrylonitrile：Azodiisobutyronitrile：1,4-
Two (2- carbazole -9- dithiocarbonic acids) isobutyl acid phenenyl esters press 2400~4800:0.5:2.5 molar ratio is mixed in
The polyacrylonitrile that obtained average molecular weight is 80000~90000g/mol that is polymerized at 60~80 DEG C is made 14~16%
Electrostatic spinning polyacrylonitrile solution；
2) polyacrylonitrile nanofiber is prepared：Electrostatic spinning voltage be 9~11KV, syringe needle to receiving screen away from
From being 11~13cm, injection speed is 0.19~0.21mm/h.
6. mixed fiber yarn according to claim 1, it is characterised in that the reinforcing fiber and thermoplasticity are received
The mass ratio of rice fiber is 1:4~9:1.
7. a kind of preparation method of mixed fiber yarn described in claim 1, it is characterised in that the preparation method bag
Include following steps：
(1) the reinforcing fiber bundles parallel arrangement of creel conveying is made with feed carrier；
(2) with the mixed yarn feeding device by thermoplastic nanofibers' fiber and reinforcing fiber bundles shuffling into mixed fiber yarn；
(3) mixed fiber yarn is collected using fiber wrap-up.
8. the preparation method of mixed fiber yarn according to claim 7, it is characterised in that the mixed yarn feeding device is
Electrostatic spinning apparatus, the shuffling uses electrostatic spinning mode.
9. the preparation method of mixed fiber yarn according to claim 8, it is characterised in that heat in the mixed fiber yarn
Plasticity nanofiber is controlled with the mass ratio of reinforcing fiber by spinning time and spinning head quantity.
10. the mixed fiber yarn according to claim any one of 1-9 is used to prepare continuous fiber reinforced thermoplastic
The application of composite.
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| CN107469465A (en) * | 2017-09-26 | 2017-12-15 | 广州纤维产品检测研究院 | A kind of pre-oxidized polyacrylonitrile fiber high temperature resistant bag-type dusting filtrate and preparation method thereof |
| CN108914302A (en) * | 2018-09-20 | 2018-11-30 | 黄旭东 | A kind of preparation method of air deformation yarn |
| CN109866441A (en) * | 2017-12-05 | 2019-06-11 | 广州金发碳纤维新材料发展有限公司 | A kind of manufacturing method recycling fibre reinforced Thermoplastic Laminates |
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| CN109866441A (en) * | 2017-12-05 | 2019-06-11 | 广州金发碳纤维新材料发展有限公司 | A kind of manufacturing method recycling fibre reinforced Thermoplastic Laminates |
| CN108914302A (en) * | 2018-09-20 | 2018-11-30 | 黄旭东 | A kind of preparation method of air deformation yarn |
| CN110106584A (en) * | 2019-04-26 | 2019-08-09 | 全球能源互联网研究院有限公司 | A kind of preoxidized fiber and preparation method thereof |
| CN110106584B (en) * | 2019-04-26 | 2021-11-30 | 全球能源互联网研究院有限公司 | Pre-oxidized fiber and preparation method thereof |
| CN110528264A (en) * | 2019-09-11 | 2019-12-03 | 北京化工大学 | A kind of high modulus carbon fiber and preparation method thereof as thermoplastic resin based composite material reinforcement |
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Application publication date: 20170609 |