CN109957969A - A kind of carbon fiber sizing agent, preparation method, enhancing carbon fiber and carbon fibre composite - Google Patents
A kind of carbon fiber sizing agent, preparation method, enhancing carbon fiber and carbon fibre composite Download PDFInfo
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/14—Polycondensates modified by chemical after-treatment
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- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/14—Polycondensates modified by chemical after-treatment
- C08G59/1433—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds
- C08G59/1438—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds containing oxygen
- C08G59/1455—Monocarboxylic acids, anhydrides, halides, or low-molecular-weight esters thereof
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- C08G59/1466—Acrylic or methacrylic acids
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
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- 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
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2300/00—Characterised by the use of unspecified polymers
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K9/00—Use of pretreated ingredients
- C08K9/08—Ingredients agglomerated by treatment with a binding agent
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- 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
- 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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- 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
- D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
- D06M2200/40—Reduced friction resistance, lubricant properties; Sizing compositions
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Abstract
It include: modified epoxy, organic solvent, surfactant and water the invention discloses a kind of carbon fiber sizing agent, preparation method, enhancing carbon fiber and carbon fibre composite, the carbon fiber sizing agent；The modified epoxy is to be obtained by polyurethane and acrylic monomer to epoxy resin modification；The polyurethane is to react to obtain with hydroxy polymer by isocyanates.Starching is carried out to carbon fiber using carbon fiber sizing agent prepared by the present invention and obtains enhancing carbon fiber, again will enhancing carbon fiber with resin matrix is compound that carbon fibre composite is made, sizing agent transition zone between the carbon fiber and resin matrix of the carbon fibre composite is able to bear higher impact force and destructive power, therefore the binding force between the carbon fiber and resin matrix in carbon fibre composite increases.
Description
Technical field
The invention belongs to Carbon Fiber Technology fields, and in particular to a kind of carbon fiber sizing agent, preparation method, enhancing carbon fiber
Dimension and carbon fibre composite.
Background technique
The unsaturated-resin basis material important as polymer matrix composites, it have high-intensitive, good cohesiveness,
The advantages that heat resistance, resistance to corrosive chemicals, easy processing, but the solidfied material of unsaturated-resin and the cohesiveness of carbon fiber it is poor,
It is easy to crack, it is difficult to meet increasingly developed engineering technology requirement.On the other hand, the surface of carbon fiber is entirely by graphited carbon
Layer composition, therefore active very low, infiltration when being mixed with composite material with general resin, between resin of carbon fiber surface
Associativity is very poor, causes the shear strength of the composite material interlayer of carbon fibre resin very low, it is light cannot to play carbon fiber itself
The high-strength feature of matter.In carbon fiber resin composite material, the mechanics of the boundary layer of carbon fiber and resin matrix to composite material
Performance plays an important role, and good interface cohesion increases the integrality of composite structure, and load is made effectively to pass through tree
Aliphatic radical body is transmitted on carbon fiber, so that carbon fiber be made really to play the role of carrying, in order to improve carbon fiber and resin matrix it
Between binding ability, need to select suitable sizing agent to carbon fiber starching, sizing agent serves as between carbon fiber and resin matrix
Transition adhesive layer, the associativity between carbon fiber and resin can be improved.
Summary of the invention
The present invention is intended to provide a kind of can increase the carbon fiber sizing agent of binding force between carbon fiber and resin matrix, its system
Preparation Method, enhancing carbon fiber and carbon fibre composite.
One aspect of the present invention provides a kind of carbon fiber sizing agent, comprising: modified epoxy, organic solvent, surface-active
Agent and water；The modified epoxy is to be obtained by polyurethane and acrylic monomer to epoxy resin modification；The polyurethane
It is to react to obtain with hydroxy polymer by isocyanates；The hydroxy polymer is polytetrahydrofuran, polypropylene oxide, gathers in oneself
At least one of ester, polylactic acid and polycarbonate.
Another aspect of the present invention provides a kind of preparation method of carbon fiber sizing agent, comprising:
S1: by epoxy resin, isocyanates, hydroxy polymer, acrylic monomers and the solvent in above-mentioned carbon fiber sizing agent
Stirred tank is added, obtained precast body is mixed evenly；
S2: surfactant and water are added in the precast body of step S1 preparation, stirs evenly obtained sizing agent.
Another aspect of the invention provides a kind of enhancing carbon fiber, and the enhancing carbon fiber is using above-mentioned carbon fiber sizing agent
Starching is carried out to carbon fiber to form.
Further aspect of the present invention provides a kind of carbon fibre composite, the carbon fibre composite include resin matrix and
Above-mentioned enhancing carbon fiber.
The present invention prepares carbon fiber sizing agent using modified epoxy, organic solvent, surfactant and water, wherein changing
Property epoxy resin refer to that isocyanates reacts to obtain with hydroxy polymer polyurethane, polyurethane and acrylic monomer are jointly to ring
Oxygen resin modified obtains the modified epoxy.The polyurethane has good elasticity, therefore uses the polyurethane pair
Epoxy resin modification can increase the toughness of the sizing agent coated in carbon fiber surface, make it that interfacial rupture to be less likely to occur；Institute
Double bond can be introduced to epoxy resin modification in epoxy molecule by stating acrylic monomer, to increase epoxy resin and carbon
The compatibility and binding force of fibre composite resin matrix.Carbon fiber is carried out using carbon fiber sizing agent prepared by the present invention
Starching obtains enhancing carbon fiber, then will enhancing carbon fiber with resin matrix is compound that carbon fibre composite, the carbon is prepared
Sizing agent transition zone between the carbon fiber and resin matrix of fibrous composite is able to bear higher impact force and destructive power, therefore
Binding force between carbon fiber and resin matrix in carbon fibre composite increases.
Specific embodiment
It elaborates below to embodiments of the present invention, it should be highlighted that, the following instruction is only illustrative, without
It is to limit the scope of the invention and its apply.
The present invention provides a kind of carbon fiber sizing agent, comprising: modified epoxy, organic solvent, surfactant and water；
The modified epoxy is to be obtained by polyurethane and acrylic monomer to epoxy resin modification；The polyurethane is by isocyanide
Acid esters reacts to obtain with hydroxy polymer；The hydroxy polymer is polytetrahydrofuran, polypropylene oxide, polycaprolactone, poly- cream
At least one of acid and polycarbonate.The present invention is using isocyanates, hydroxy polymer and acrylic monomer to asphalt mixtures modified by epoxy resin
Rouge is modified, and (isocyanates reacted to obtain polyurethane with hydroxy polymer before this, then was that polyurethane and acrylic monomer are jointly right
Epoxy resin modification), the compatible of epoxy resin in carbon fiber sizing agent and Resin Basal of CFRP can be increased
Property, while also can increase the toughness of the sizing agent of carbon fiber surface coating, make it that interfacial rupture to be less likely to occur.
In the present invention, the hydroxy polymer is preferably polytetrahydrofuran.Isocyanates, polytetrahydrofuran are used as a result,
It is modified that (isocyanates reacts to obtain polytetramethylene oxide with polytetrahydrofuran before this to epoxy resin with acrylic monomer
Polyurethane, then be polytetrahydrofuran type polyurethane and acrylic monomer jointly to epoxy resin modification), low temperature item can be improved
Under part the phenomenon that starching oxidant layer easy embrittlement, to guarantee the using effect of prepared carbon fiber sizing agent under cryogenic.
In the present invention, the acrylic monomer is acrylic acid, methacrylic acid, phenyl-alpha-acrylic and senecioate-
At least one of hydroxyl ethyl ester.Modifying agent of the acrylic monomer as epoxy resin, so that modified epoxy molecule
On contain double bond, the different type resin (matrix in epoxy resin and carbon fibre composite i.e. in sizing agent can be improved
Resin) between binding ability.
In the present invention, the isocyanates is toluene di-isocyanate(TDI), methyl diphenylene diisocyanate, hexa-methylene two
At least one of isocyanates, benzene dimethylene diisocyanate and naphthalene 1,5- diisocyanate.
In the present invention, the reaction of the isocyanates and hydroxy polymer carries out under the catalysis of the catalyst；Institute
It states isocyanates and hydroxy polymer reacts to obtain polyurethane, the polyurethane is also to urge in catalyst to the modification of epoxy resin
The lower progress of change effect；The catalyst is at least one of dibutyl tin dilaurate and dibutyltin diacetate.
In the present invention, the epoxy resin is bisphenol A type epoxy resin, the epoxide equivalent of the bisphenol A type epoxy resin
For 180-250, the bisphenol A type epoxy resin (i.e. the quantity of active group is more in epoxy resin) for selecting epoxide equivalent low can increase
Add the probability of chemistry key connection between epoxy resin and carbon fibre resin matrix, to improve binding force between the two.
In the present invention, the organic solvent is at least one of dimethylbenzene, ethyl acetate and butyl acetate.
In the present invention, the surfactant is at least one of polysorbate60, Tween 80 and Saipan 20, and the surface is living
Property agent facilitate sizing agent and formed emulsion state and to keep stable.
In the present invention, by weight, the carbon fiber sizing agent include: 20-50 parts of modified epoxies, 10-30 parts have
Solvent, 3-10 part surfactant and 30-50 parts of water.
In the present invention, the solid content of the carbon fiber sizing agent is 20-50%, and solid content can make starching within this range
Dosage form at emulsions stable state, solid content is excessively high, sizing agent formed lotion it is unstable, it may appear that precipitating.
The present invention provides a kind of preparation method of carbon fiber sizing agent, comprising:
S1: by epoxy resin, isocyanates, hydroxy polymer, acrylic monomers and the solvent in above-mentioned carbon fiber sizing agent
Stirred tank is added, obtained precast body is mixed evenly；
S2: surfactant and water are added in the precast body of step S1 preparation, stirs evenly obtained sizing agent.
In the present invention, the step S1 is preferably by epoxy resin, isocyanates, hydroxy polymer, acrylic monomers, urges
Stirred tank is added in agent and solvent, and obtained precast body is mixed evenly.
In the present invention, by weight, the step S1 is by 10-30 parts of epoxy resin, 2-5 parts of isocyanates, 2-5 parts of hydroxyls
Polymer, 5-10 part acrylic monomers, 1-3 parts of catalyst, 10-30 parts of solvents, 3-10 parts of surfactants and 30-50 parts of water add
Enter stirred tank, obtained precast body is mixed evenly.
In the present invention, the step S2 be added in precast body prepared by the step S1 3-10 parts of surfactants and
30-50 parts of water, stir evenly obtained sizing agent.
The present invention provides a kind of enhancing carbon fiber, and the enhancing carbon fiber is using above-mentioned carbon fiber sizing agent to carbon fiber
Dimension carries out starching and forms.Preferably, corona treatment can be carried out to carbon fiber before starching, to increase carbon fiber surface
Active group, improve the wellability and binding force between carbon fiber and sizing agent.
The present invention provides a kind of carbon fibre composite, and the carbon fibre composite includes resin matrix and above-mentioned enhancing
Carbon fiber.The resin matrix is vinylite or unsaturated-resin.
The present invention prepares carbon fiber sizing agent using modified epoxy, organic solvent, surfactant and water, wherein changing
Property epoxy resin refer to that isocyanates reacts to obtain with hydroxy polymer polyurethane, polyurethane and acrylic monomer are jointly to ring
Oxygen resin modified obtains the modified epoxy.The polyurethane has good elasticity, therefore uses the polyurethane pair
Epoxy resin modification can increase the toughness of the sizing agent coated in carbon fiber surface, make it that interfacial rupture to be less likely to occur；Institute
Double bond can be introduced to epoxy resin modification in epoxy molecule by stating acrylic monomer, to increase epoxy resin and carbon
The compatibility and binding force of fibre composite resin matrix.Carbon fiber is carried out using carbon fiber sizing agent prepared by the present invention
Starching obtains enhancing carbon fiber, then will enhancing carbon fiber with resin matrix is compound that carbon fibre composite, the carbon is prepared
Sizing agent transition zone between the carbon fiber and resin matrix of fibrous composite is able to bear higher impact force and destructive power, therefore
Binding force between carbon fiber and resin matrix in carbon fibre composite increases.
Below by embodiment, the present invention is further illustrated.It should be appreciated that specific embodiment described herein
Only to explain the present invention, it is not intended to limit the present invention.Raw material employed in embodiment and comparative example is commercially available,
The present invention is not particularly limited.
Embodiment 1
By weight, by 10 parts of bisphenol A epoxide resins, 5 parts of methacrylic acids, 2.5 parts of toluene di-isocyanate(TDI)s, 2.5 parts of polycyclics
Ethylene Oxide, 2 parts of dibutyl tin dilaurates and 20 parts of dimethylbenzene are added in stirred tank, and at 60 DEG C, constant temperature stirs 5 for temperature control
Precast body is made in h；3 parts of polysorbate60s and 30 parts of distilled water are added in precast body obtained above, stir 2 h under room temperature,
It is made sizing agent (solid content 33%)；
Starching is carried out to carbon fiber using sizing agent, starching speed is 1 m/min, and drying temperature is 120 DEG C, drying time 1
Enhancing carbon fiber is made in min；
Carbon fibre composite S1 is made with filament winding process in enhancing carbon fiber and resin matrix.
Embodiment 2
By weight, by 20 parts of bisphenol A epoxide resins, 8 parts of methacrylic acids, 3.5 parts of methyl diphenylene diisocyanates, 3.5
Part polycarbonate, 3 parts of dibutyl tin dilaurates and 20 parts of ethyl acetate are added in stirred tank, and temperature is controlled at 60 DEG C, permanent
Temperature 5 h of stirring, are made precast body；5 parts of polysorbate60s and 40 parts of distilled water are added in precast body obtained above, under room temperature
2 h are stirred, are made sizing agent (solid content 41%)；
Starching is carried out to carbon fiber using sizing agent, starching speed is 1 m/min, and drying temperature is 120 DEG C, drying time 1
Enhancing carbon fiber is made in min；
Carbon fibre composite S2 is made with filament winding process in enhancing carbon fiber and resin matrix.
Embodiment 3
By weight, by 30 parts of bisphenol A epoxide resins, 8 parts of acrylic acid, 4 parts of hexamethylene diisocyanates, 4 parts of poly- tetrahydro furans
Mutter, 3 parts of dibutyl tin dilaurates and 30 parts of dimethylbenzene are added in stirred tank, at 60 DEG C, constant temperature stirs 5 h for temperature control,
Precast body is made；5 parts of Tween 80s and 40 parts of distilled water are added in precast body obtained above, stir 2 h under room temperature, make
It obtains sizing agent (solid content 43%)；
Starching is carried out to carbon fiber using sizing agent, starching speed is 1 m/min, and drying temperature is 120 DEG C, drying time 1
Enhancing carbon fiber is made in min；
Carbon fibre composite S3 is made with filament winding process in enhancing carbon fiber and resin matrix.
Embodiment 4
By weight, by 30 parts of bisphenol A epoxide resins, 10 parts of senecioate-hydroxyl ethyl esters, 4.5 parts of phenylenedimethylidyne diisocyanates
Ester, 4.5 parts of polytetrahydrofurans, 3 parts of dibutyltin diacetates and 30 parts of dimethylbenzene are added in stirred tank, and temperature is controlled 60
DEG C, constant temperature stirs 5 h, and precast body is made；8 parts of Tween 80s and 50 parts of distilled water, room temperature are added in precast body obtained above
Under the conditions of stir 2 h, be made sizing agent (solid content 42%)；
Starching is carried out to carbon fiber using sizing agent, starching speed is 1 m/min, and drying temperature is 120 DEG C, drying time 1
Enhancing carbon fiber is made in min；
Carbon fibre composite S4 is made with filament winding process in enhancing carbon fiber and resin matrix.
Embodiment 5
By weight, by 30 parts of bisphenol A epoxide resins, 8 parts of phenyl-alpha-acrylics, 5 parts of naphthalenes 1,5- diisocyanate, 5 parts of poly- creams
Acid, 3 parts of dibutyltin diacetates and 30 parts of butyl acetates are added in stirred tank, and at 60 DEG C, constant temperature stirs 5 h for temperature control,
Precast body is made；10 parts of Saipan 20 and 50 part distilled water are added in precast body obtained above, stir 2 h under room temperature,
It is made sizing agent (solid content 43%)；
Starching is carried out to carbon fiber using sizing agent, starching speed is 1 m/min, and drying temperature is 120 DEG C, drying time 1
Enhancing carbon fiber is made in min；
Carbon fibre composite S5 is made with filament winding process in enhancing carbon fiber and resin matrix.
Embodiment 6
By weight, by 30 parts of bisphenol A epoxide resins, 8 parts of acrylic acid, 4 parts of toluene di-isocyanate(TDI)s, 4 parts of polycaprolactones, 3 parts
Dibutyl tin dilaurate and 30 parts of dimethylbenzene are added in stirred tank, and at 60 DEG C, constant temperature stirs 5 h for temperature control, are made pre-
Body processed；5 parts of Tween 80s and 40 parts of distilled water are added in precast body obtained above, stir 2 h under room temperature, starching is made
Agent (solid content 43%)；
Starching is carried out to carbon fiber using sizing agent, starching speed is 1 m/min, and drying temperature is 120 DEG C, drying time 1
Enhancing carbon fiber is made in min；
Carbon fibre composite S6 is made with filament winding process in enhancing carbon fiber and resin matrix.
Comparative example 1
By weight, 20 parts of bisphenol A epoxide resins and 20 parts of dimethylbenzene are added in stirred tank, temperature is controlled at 60 DEG C, permanent
Temperature 5 h of stirring, are made precast body；3 parts of polysorbate60s and 30 parts of distilled water are added in precast body obtained above, under room temperature
2 h are stirred, are made sizing agent (solid content 31%)；
Starching is carried out to carbon fiber using sizing agent, starching speed is 1 m/min, and drying temperature is 120 DEG C, drying time 1
Enhancing carbon fiber is made in min；
Carbon fibre composite D1 is made with filament winding process in enhancing carbon fiber and resin matrix.
Comparative example 2
By weight, by 20 parts of bisphenol A epoxide resins, 3.5 parts of methyl diphenylene diisocyanates, 3.5 parts of polytetrahydrofurans, 3
Part dibutyltin diacetate and 20 parts of dimethylbenzene are added in stirred tank, and at 60 DEG C, constant temperature stirs 5 h for temperature control, are made pre-
Body processed；5 parts of polysorbate60s and 40 parts of distilled water are added in precast body obtained above, stir 2 h under room temperature, starching is made
Agent (solid content 36%)；
Starching is carried out to carbon fiber using sizing agent, starching speed is 1 m/min, and drying temperature is 120 DEG C, drying time 1
Enhancing carbon fiber is made in min；
Carbon fibre composite D2 is made with filament winding process in enhancing carbon fiber and resin matrix.
Comparative example 3
By weight, 20 parts of bisphenol A epoxide resins, 8 parts of acrylic acid, 3 parts of dibutyltin diacetates and 20 parts of dimethylbenzene are added
Into stirred tank, at 60 DEG C, constant temperature stirs 5 h for temperature control, and precast body is made；5 parts are added in precast body obtained above
Tween 80 and 40 parts of distilled water, stir 2 h under room temperature, are made sizing agent (solid content 37%)；
Starching is carried out to carbon fiber using sizing agent, starching speed is 1 m/min, and drying temperature is 120 DEG C, drying time 1
Enhancing carbon fiber is made in min；
Carbon fibre composite D3 is made with filament winding process in enhancing carbon fiber and resin matrix.
Performance test
1. fiber appearance is tested: using visual method, whether there is or not lousiness, fracture of wires for observation carbon fiber surface；
2. interlayer shear is tested: using GB/T 1450.1-2005, test the binding ability between fiber and resin.
Test result is as shown in table 1.
Table 1
| Sample | Appearance | Interlaminar shear strength |
| S1 | Well, the scared phenomenon of no fracture of wire | 65 MPa |
| S2 | Well, the scared phenomenon of no fracture of wire | 63 MPa |
| S3 | Well, the scared phenomenon of no fracture of wire | 68 MPa |
| S4 | Well, the scared phenomenon of no fracture of wire | 67 MPa |
| S5 | Well, the scared phenomenon of no fracture of wire | 63 MPa |
| S6 | Well, the scared phenomenon of no fracture of wire | 64 MPa |
| D1 | Well, the scared phenomenon of no fracture of wire | 42 MPa |
| D2 | Well, the scared phenomenon of no fracture of wire | 55 MPa |
| D3 | Well, the scared phenomenon of no fracture of wire | 48 MPa |
From the test result of table 1: preparing enhancing carbon fiber to carbon fiber starching using carbon fiber sizing agent of the invention, increase
Strong carbon fiber with resin matrix is Wrapping formed that carbon fibre composite S1-S6, obtained carbon fibre composite sample is prepared
The appearance of product S1-S6 is good, and without the phenomenon that fracture of wire is scared, and the interlaminar strength of carbon fibre composite S1-S6 is big
In 60 MPa.Using carbon fiber sizing agent of the invention, (comparative example 1 is not to epoxy resin modification, comparison for comparative example 1,2 and 3
Example 2 is using polyurethane to epoxy resin modification, and comparative example 3 is using acrylic monomer to epoxy resin modification), from test result
As can be seen that not to the interlaminar strength minimum 42 of the carbon fibre composite D1 of the sizing agent preparation of epoxy resin modification
MPa, only with polyurethane to epoxy resin modification or only with acrylic monomer to the sizing agent system of epoxy resin modification
The interlaminar strength of standby carbon fibre composite D2 and D3 are relatively low, specially 55 MPa and 48 MPa.That is, adopting
The knot between the carbon fiber and resin matrix in carbon fibre composite can be obviously increased with carbon fiber sizing agent of the invention
With joint efforts.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of carbon fiber sizing agent characterized by comprising modified epoxy, organic solvent, surfactant and water；
The modified epoxy is to be obtained by polyurethane and acrylic monomer to epoxy resin modification；The polyurethane is by isocyanide
Acid esters reacts to obtain with hydroxy polymer；The hydroxy polymer is polytetrahydrofuran, polypropylene oxide, polycaprolactone, poly- cream
At least one of acid and polycarbonate.
2. carbon fiber sizing agent according to claim 1, which is characterized in that the acrylic monomer is acrylic acid, first
At least one of base acrylic acid, phenyl-alpha-acrylic and senecioate-hydroxyl ethyl ester.
3. carbon fiber sizing agent according to claim 1, which is characterized in that the isocyanates is toluene diisocynate
Ester, methyl diphenylene diisocyanate, bis- isocyanide of hexamethylene diisocyanate, benzene dimethylene diisocyanate and naphthalene 1,5-
At least one of acid esters.
4. carbon fiber sizing agent according to claim 1, which is characterized in that the epoxy resin is bisphenol type epoxy tree
Rouge；The epoxide equivalent of the bisphenol A type epoxy resin is 180-250；The organic solvent is dimethylbenzene, ethyl acetate and acetic acid
At least one of butyl ester；The surfactant is at least one of polysorbate60, Tween 80 and Saipan 20.
5. carbon fiber sizing agent described in any one of -4 according to claim 1, which is characterized in that by weight, the carbon fiber
Tieing up sizing agent includes: 20-50 parts of modified epoxies, 10-30 parts of organic solvents, 3-10 parts of surfactants and 30-50 parts of water.
6. carbon fiber sizing agent according to claim 5, which is characterized in that the solid content of the carbon fiber sizing agent is
20-50%。
7. a kind of preparation method of carbon fiber sizing agent characterized by comprising
S1: by epoxy resin, isocyanates, the hydroxyl polymeric in carbon fiber sizing agent of any of claims 1-6
Stirred tank is added in object, acrylic monomers and solvent, and obtained precast body is mixed evenly；
S2: surfactant and water are added in the precast body of step S1 preparation, stirs evenly obtained sizing agent.
8. a kind of enhancing carbon fiber, which is characterized in that the enhancing carbon fiber is using of any of claims 1-6 described
Carbon fiber sizing agent carries out starching to carbon fiber and forms.
9. a kind of carbon fibre composite, which is characterized in that the carbon fibre composite includes resin matrix and claim 8
The enhancing carbon fiber.
10. carbon fibre composite according to claim 9, which is characterized in that the resin matrix is vinylite
Or unsaturated-resin.
Priority Applications (1)
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| CN112724464A (en) * | 2021-01-17 | 2021-04-30 | 上海交通大学 | Method for preparing carbon fiber/polylactic acid composite material |
| CN113172971A (en) * | 2020-06-22 | 2021-07-27 | 中国石化集团胜利石油管理局有限公司电力分公司 | Carbon fiber composite material wire core and production method thereof |
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| CN113774665A (en) * | 2020-06-09 | 2021-12-10 | 中国石油化工股份有限公司 | Polyether-polylactic acid-acrylate sizing agent and preparation method and application thereof |
| CN113172971A (en) * | 2020-06-22 | 2021-07-27 | 中国石化集团胜利石油管理局有限公司电力分公司 | Carbon fiber composite material wire core and production method thereof |
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| CN113355916A (en) * | 2021-06-22 | 2021-09-07 | 江苏恒神股份有限公司 | Carbon fiber bundling agent, carbon fiber bundle for winding forming, and preparation method and application thereof |
| CN113355916B (en) * | 2021-06-22 | 2022-09-06 | 江苏恒神股份有限公司 | Carbon fiber bundling agent, carbon fiber bundle for winding forming, and preparation method and application thereof |
| CN113957718A (en) * | 2021-09-30 | 2022-01-21 | 青岛汇智领先新材料科技有限公司 | Preparation method of environment-friendly modified polyurethane vinyl carbon fiber sizing agent |
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| CN117265879A (en) * | 2023-09-07 | 2023-12-22 | 吉林乾仁新材料有限公司 | Preparation method, product and application of high-performance multifunctional carbon fiber sizing agent |
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