CN113583323A - Carbon fiber material for wind power blade and preparation method thereof - Google Patents
Carbon fiber material for wind power blade and preparation method thereof Download PDFInfo
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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
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/042—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with carbon fibres
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- C08K3/24—Acids; Salts thereof
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- C08K2003/265—Calcium, strontium or barium carbonate
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Abstract
The invention discloses a carbon fiber material for a wind power blade and a preparation method thereof, wherein the carbon fiber material comprises the following raw materials in parts by weight: carbon fiber precursor: 40-62 parts of polyethylene resin: 20-37 parts of calcium carbonate: 0.7-2.2 parts of synergist: 3-5 parts of antioxidant: 0.4 to 0.6 portion. Adding calcium carbonate, a dispersing agent and an antioxidant into a polyethylene resin mixing tank for fully stirring, then pouring into a resin impregnation tank, placing carbon fiber precursors at a fixed position through fiber supply and fiber guide, then drawing the precursors and a forming die, drying and post-processing the formed plates, winding the plates into a disc, and cutting and packaging the plates. The carbon fiber material for the wind power blade is simple in process, light in weight and high in tensile strength and rigidity.
Description
Technical Field
The invention relates to the technical field of wind power blade materials, in particular to a carbon fiber material for a wind power blade and a preparation method thereof.
Background
With the increasingly prominent world energy problem, wind power generation is a power generation mode with great commercialization prospect due to the huge reserves, renewable resources and wide market. As one of the core components of wind turbine generators, the development of large-scale and high-power wind turbine blades has made higher demands on the molding process and mechanical properties of composite materials. The epoxy resin-based fiber reinforced composite material is a main material of a wind power generation blade and a blade root, but the problems of high material brittleness, short service life, poor permeability, high curing temperature and the like generally exist, so that the forming process difficulty is increased, the energy waste and the manufacturing cost are increased, and the development of the wind power industry in China is severely restricted. The traditional wind power blade is mostly prepared by adopting a glass fiber perfusion process. However, as the length of the blade increases, new requirements are made on the performance such as strength and rigidity of the reinforcing material, and the glass fiber gradually shows a deficiency in performance in the manufacture of large composite blades. To ensure that the tip does not hit the tower under extreme wind loads, the blade must be sufficiently rigid. The weight of the blade is reduced, the strength and the rigidity are required to be met, and the most effective method is that the main beam is made of carbon fiber plates.
Chinese patent CN112795143A discloses a high-performance pultrusion epoxy resin composite material for wind power and a preparation method thereof, and mainly has the defects that glass fiber is adopted, the material density is high, and the problems of heavy weight and strength and rigidity in the prior art cannot meet the use requirements of long blades. Therefore, it is necessary to develop a composite material having good formability, light weight, and high tensile strength and rigidity.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the carbon fiber material for the wind power blade, which is simple in process, light in weight and high in tensile strength and rigidity.
In order to achieve the purpose, the invention adopts the technical scheme that the carbon fiber material for the wind power blade is designed, and comprises the following raw materials in parts by weight: carbon fiber precursor: 40-62 parts of polyethylene resin: 20-37 parts of calcium carbonate: 0.7-2.2 parts of synergist: 3-5 parts of antioxidant: 0.4 to 0.6 portion.
The addition of calcium carbonate can change the rheological property of the invention, enhance the dispersibility of polyethylene resin, increase the infiltration degree of protofilaments and further enhance the mechanical property of the material.
The synergist is used for changing the molecular repulsive force among the components of the material and reducing the energy barrier, so that the synergistic cooperation of a system is increased, and the promotion effect on the improvement of the mechanical property of the material is further achieved. Meanwhile, the material has the advantage of low density, and the density of the whole material can be reduced, so that the weight of the material is reduced.
Preferably, the synergist is one or more of alkyl glucosides. The alkyl glucoside is a novel nonionic surfactant, and can enhance the compatibility among the components of the material and increase the stability of the material, thereby having a synergistic effect on the tensile strength and the rigidity of the material.
As a further preferable technical solution of the carbon fiber material for wind power blades of the present invention, the alkyl glucoside is coco glucoside, lauryl glucoside, cetearyl glucoside.
An antioxidant, also called an anti-aging agent, is a chemical substance which can play a role in delaying the aging phenomenon caused by the oxidation of a high polymer material. When present in only small amounts in the polymer system, the progress of the oxidation process of the polymer can be retarded or inhibited, thereby preventing the aging of the polymer and extending its useful life.
The antioxidant is preferably one or a mixture of several of antioxidant 1010, antioxidant 168 and antioxidant 1076.
The invention also aims to provide a preparation method of the carbon fiber material for the wind power blade.
FIG. 1 is a process flow diagram, which includes the following steps:
the method comprises the following steps: adding calcium carbonate, a synergist and an antioxidant into a polyethylene resin mixing tank, and fully stirring at the stirring speed of 300-400r/min for 1-2 h;
step two: pouring the material obtained in the first step into a resin impregnation tank, placing carbon fiber precursors at a fixed position through fiber supply and fiber guide, performing pre-forming treatment and mold heating forming on the surface material after resin impregnation, and drawing a plate;
step three: drying the formed plate in a vacuum oven at 50-55 deg.c and vacuum degree of-0.2 MPa to-0.1 MPa;
step four: and (4) rolling the plate into a disc, and cutting and packaging.
The invention has the advantages and beneficial effects that: the addition of calcium carbonate changes the rheological property of the invention, enhances the dispersibility of polyethylene resin, increases the infiltration degree of protofilaments and increases the mechanical property of the material. The synergist can enhance the compatibility among the components of the material and increase the stability of the material, thereby playing a role in synergistically promoting the tensile strength and the rigidity of the material. The calcium carbonate and the synergist both have beneficial effects on the mechanical properties of the composite material, and meanwhile, the synergist can effectively improve the density of the material. The density of the material of the invention is lower than 1.75g/cm3The tensile strength is more than 1650MPa, and the rigidity is more than 300 GPa. The preparation process is simple, the comprehensive performance is good, and the application prospect is strong.
From the preparation method, the stirring speed in the first step is 300-400r/min, so that the material mixing effect can be enhanced, and the intermolecular binding stress can be improved. The drying mode of the step three is vacuum oven drying, so that the thermal stability of the invention can be improved, and the product quality can be better controlled.
Drawings
FIG. 1 is a process flow diagram of a carbon fiber material for wind blades according to the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
A preparation method of a carbon fiber material for a wind power blade comprises the following steps:
the method comprises the following steps: adding 0.7 part of calcium carbonate, 3 parts of coco glucoside and 0.4 part of antioxidant 1010 into a 20 parts of polyethylene resin mixing tank, and fully stirring at the rotating speed of 300r for 2 hours;
step two: pouring the material obtained in the first step into a resin impregnation tank, placing 40 parts of carbon fiber precursors at a fixed position through fiber supply and fiber guide, performing pre-forming treatment and mold heating forming on the surface material after resin impregnation, and drawing the plate;
step three: drying the formed plate, and drying in a vacuum oven at 50 ℃ and a vacuum degree of-0.2 MPa;
step four: and (4) rolling the plate into a disc, and cutting and packaging.
Example 2
A preparation method of a carbon fiber material for a wind power blade comprises the following steps:
the method comprises the following steps: 2.2 parts of calcium carbonate, 5 parts of lauryl glucoside and 0.6 part of antioxidant 168 are added into a 37 parts of polyethylene resin mixing tank to be fully stirred, the rotating speed is 400r, and the stirring time is 1 h;
step two: pouring the material obtained in the first step into a resin tank, placing 62 parts of carbon fiber precursors at a fixed position through fiber supply and fiber guide, performing pre-forming treatment and mold heating forming on the surface material after resin impregnation, and drawing a plate;
step three: drying the formed plate, and drying in a vacuum oven at 55 ℃ and a vacuum degree of-0.1 MPa;
step four: and (4) rolling the plate into a disc, and cutting and packaging.
Example 3
A preparation method of a carbon fiber material for a wind power blade comprises the following steps:
the method comprises the following steps: adding 0.7 part of calcium carbonate, 5 parts of cetearyl glucoside and 0.4 part of antioxidant 1076 into a 20 parts polyethylene resin mixing tank, and fully stirring at the rotating speed of 350r for 1 h;
step two: pouring the material obtained in the first step into a resin tank, placing 62 parts of carbon fiber precursors at a fixed position through fiber supply and fiber guide, performing pre-forming treatment and mold heating forming on the surface material after resin impregnation, and drawing a plate;
step three: drying the formed plate, and drying in a vacuum oven at 50 ℃ and a vacuum degree of-0.2 MPa;
step four: and (4) rolling the plate into a disc, and cutting and packaging.
Example 4
A preparation method of a carbon fiber material for a wind power blade comprises the following steps:
the method comprises the following steps: adding 2.2 parts of calcium carbonate, 4 parts of a mixture of cetearyl glucoside and lauryl glucoside, 0.4 part of a mixture of an antioxidant 1076 and an antioxidant 168 into a 37 part polyethylene resin mixing tank, and fully stirring at the rotating speed of 400r for 1.5 h;
step two: pouring the material obtained in the first step into a resin tank, placing 62 parts of carbon fiber precursors at a fixed position through fiber supply and fiber guide, performing pre-forming treatment and mold heating forming on the surface material after resin impregnation, and drawing a plate;
step three: drying the formed plate, and drying in a vacuum oven at 52 ℃ and a vacuum degree of-0.2 MPa;
step four: and (4) rolling the plate into a disc, and cutting and packaging.
Example 5
A preparation method of a carbon fiber material for a wind power blade comprises the following steps:
the method comprises the following steps: adding 1.5 parts of calcium carbonate, 5 parts of lauryl glucoside and 0.5 part of antioxidant 168 into a 30 parts of polyethylene resin mixing tank, and fully stirring at the rotating speed of 300r for 1 h;
step two: pouring the material obtained in the first step into a resin tank, placing 50 parts of carbon fiber precursors at a fixed position through fiber supply and fiber guide, performing pre-forming treatment after resin impregnation on the surface material of the carbon fiber precursors, heating and forming a mould, and drawing a plate;
step three: drying the formed plate, and drying in a vacuum oven at 55 ℃ and a vacuum degree of-0.1 MPa;
step four: and (4) rolling the plate into a disc, and cutting and packaging.
Example 6
A preparation method of a carbon fiber material for a wind power blade comprises the following steps:
the method comprises the following steps: adding 1 part of calcium carbonate, 5 parts of lauryl glucoside and 0.5 part of antioxidant 168 into a 30 parts of polyethylene resin mixing tank, and fully stirring at the rotating speed of 320r for 2 hours;
step two: pouring the material obtained in the first step into a resin tank, placing 50 parts of carbon fiber precursors at a fixed position through fiber supply and fiber guide, performing pre-forming treatment after resin impregnation on the surface material of the carbon fiber precursors, heating and forming a mould, and drawing a plate;
step three: drying the formed plate, and drying in a vacuum oven at 55 ℃ and a vacuum degree of-0.15 MPa;
step four: and (4) rolling the plate into a disc, and cutting and packaging.
Comparative example
The comparative example is based on example 1 with the difference that calcium carbonate is not included in comparative example 1 and no synergist is included in comparative example 2.
Examples 1-5 Experimental results for inventive and comparative examples
| Item | Density (g/cm)3) | Tensile Strength (MPa) | Rigidity (MPa) |
| Example 1 | 1.61 | 1670 | 305 |
| Example 2 | 1.71 | 1680 | 310 |
| Example 3 | 1.62 | 1655 | 302 |
| Example 4 | 1.67 | 1690 | 308 |
| Example 5 | 1.65 | 1675 | 311 |
| Example 6 | 1.63 | 1685 | 306 |
| Comparative example 1 | 1.60 | 1500 | 280 |
| Comparative example 2 | 1.82 | 1450 | 250 |
Examples 1-6 the invention had a low density, all at 1.75g/cm3The invention meets the requirements of GB/T30019-2013, and simultaneously the tensile strength and rigidity of the invention also reach the industrial standard. Comparative example 1, in which calcium carbonate was not added, had a decrease in density, but the material properties were significantly reduced. The comparative example 2 has no synergist, the tensile strength performance of the material is reduced by 14 percent, the rigidity is reduced by about 20 percent, the calcium carbonate and the synergist have beneficial effects on the mechanical performance of the invention, and the synergist can effectively improve the density of the material. In conclusion, the density of the invention is lower than 1.75g/cm3The tensile strength is more than 1650MPa, the rigidity is more than 300GPa, the performance is excellent, and the application prospect is stronger.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The carbon fiber material for the wind power blade is characterized by comprising the following raw materials in parts by weight: carbon fiber precursor: 40-62 parts of polyethylene resin: 20-37 parts of calcium carbonate: 0.7-2.2 parts of synergist: 3-5 parts of antioxidant: 0.4 to 0.6 portion.
2. The carbon fiber material for the wind power blade as claimed in claim 1, wherein: the synergist is one or more of alkyl glucosides.
3. The carbon fiber material for the wind power blade as claimed in claim 2, wherein: the alkyl glucoside is one or more of coco glucoside, lauryl glucoside, and cetearyl glucoside.
4. The carbon fiber material for the wind power blade as claimed in claim 1, wherein: the method is characterized in that: the antioxidant is one or more of antioxidant 1010, antioxidant 168, and antioxidant 1076.
5. The preparation method of the carbon fiber material for the wind power blade as claimed in any one of claims 1 to 4, comprising the following steps:
the method comprises the following steps: adding calcium carbonate, a synergist and an antioxidant into a polyethylene resin mixing tank, and fully stirring at the stirring speed of 300-400r/min for 1-2 h;
step two: pouring the material obtained in the first step into a resin impregnation tank, placing carbon fiber precursors at a fixed position through fiber supply and fiber guide, performing pre-forming treatment and mold heating forming on the surface material after resin impregnation, and drawing a plate;
step three: drying the formed plate in a vacuum oven at 50-55 deg.c and vacuum degree of-0.2 MPa to-0.1 MPa;
step four: and (4) rolling the plate into a disc, and cutting and packaging.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906251A (en) * | 2009-06-04 | 2010-12-08 | 上海杰事杰新材料股份有限公司 | Composite material for wind power generator blade and preparation method thereof |
| CN102850816A (en) * | 2011-06-27 | 2013-01-02 | 上海杰事杰新材料(集团)股份有限公司 | Thermoplastic resin composite material and preparation method and application thereof |
| CN106863852A (en) * | 2016-12-28 | 2017-06-20 | 广东延春高新材料科技股份有限公司 | A kind of thermoplastic pultrusion method |
| CN112522815A (en) * | 2020-12-08 | 2021-03-19 | 远景能源有限公司 | Oversized-tow carbon fiber, preparation method thereof, continuous fiber reinforced resin matrix composite material and wind power blade |
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- 2021-07-07 CN CN202110769303.XA patent/CN113583323A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906251A (en) * | 2009-06-04 | 2010-12-08 | 上海杰事杰新材料股份有限公司 | Composite material for wind power generator blade and preparation method thereof |
| CN102850816A (en) * | 2011-06-27 | 2013-01-02 | 上海杰事杰新材料(集团)股份有限公司 | Thermoplastic resin composite material and preparation method and application thereof |
| CN106863852A (en) * | 2016-12-28 | 2017-06-20 | 广东延春高新材料科技股份有限公司 | A kind of thermoplastic pultrusion method |
| CN112522815A (en) * | 2020-12-08 | 2021-03-19 | 远景能源有限公司 | Oversized-tow carbon fiber, preparation method thereof, continuous fiber reinforced resin matrix composite material and wind power blade |
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Application publication date: 20211102 |