CN114773947A - Impact-resistant and extension-resistant water-based primer for wind turbine blade, and preparation method and application method thereof - Google Patents
Impact-resistant and extension-resistant water-based primer for wind turbine blade, and preparation method and application method thereof Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000945 filler Substances 0.000 claims abstract description 40
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 29
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 24
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002270 dispersing agent Substances 0.000 claims abstract description 15
- -1 phenolic aldehyde amine Chemical class 0.000 claims abstract description 14
- 239000006229 carbon black Substances 0.000 claims abstract description 13
- 239000011787 zinc oxide Substances 0.000 claims abstract description 12
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 11
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 11
- 239000004593 Epoxy Substances 0.000 claims abstract description 10
- 239000008367 deionised water Substances 0.000 claims abstract description 10
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 9
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 17
- 239000003822 epoxy resin Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 229920000647 polyepoxide Polymers 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 6
- 230000001680 brushing effect Effects 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Polymers C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000003755 preservative agent Substances 0.000 claims description 2
- 230000002335 preservative effect Effects 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 7
- 239000003960 organic solvent Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 239000012745 toughening agent Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
- C08G59/5033—Amines aromatic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/002—Priming paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3009—Sulfides
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- Chemical & Material Sciences (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses an impact-resistant and extension-resistant water-based primer for a wind power blade and a preparation method thereof, wherein the primer consists of a component A and a component B in a weight ratio of 2: 1: the component A comprises the following components in parts by weight: 30-55 parts of EP120 resin with the epoxy equivalent of 220-240, 0.3-0.6 part of dispersant, 25-40 parts of filler and 0.5 part of carbon black; the component B comprises the following components in parts by weight: 50-70 parts of water-based phenolic aldehyde amine curing agent, 20-30 parts of deionized water, 0.5-1.5 parts of defoaming agent and 0.1-0.5 part of flatting agent; the filler is a mixed filler, and the mixed filler is a mixed system of titanium dioxide, silicon micropowder, talcum powder, molybdenum disulfide micropowder and tetrapod-like zinc oxide whiskers. The impact-resistant and extension-resistant water-based primer for the wind power blade, and the preparation method and the use method thereof have the characteristics of impact resistance, extension resistance and strong adhesive force.
Description
Technical Field
The invention relates to the technical field of wind power blade primer, in particular to impact-resistant and extension-resistant water-based primer for a wind power blade, and a preparation method and a use method thereof.
Background
The wind power blade is one of the most core parts of a wind power unit and needs to work in severe environments such as strong ultraviolet irradiation, sand erosion, high and low temperature change, ice, snow, rain erosion and the like for a long time. In addition, the installation of large blades is extremely troublesome and expensive, and generally requires a work maintenance period of more than 10 years, so that the protection of the wind power blades is particularly important, and a protection system mainly comprises a primer and a finish paint.
Taking the primer as an example, the primer is realized by mainly comprising resin and an auxiliary agent. The main function of the auxiliary agent is to avoid the generation of adverse cases of paint films. The resin is mainly epoxy resin and polyurethane resin. Polyurethane resins are abundant in terms of cost, but their properties are limited.
Meanwhile, the Chinese patent application CN102190942A discloses an epoxy primer for moisture-resistant megawatt wind turbine blades and a preparation method thereof, wherein the primer is formed by mixing a coating part A and a curing agent part B; wherein the coating part A comprises the following components in parts by weight: 18-25 parts of epoxy resin, 50-60 parts of pigment and filler, 2-4 parts of anti-settling agent, 1-1.5 parts of dispersing agent, 1-2 parts of defoaming agent, 0.5-1 part of flatting agent, 0.5-1 part of coupling agent and 15-25 parts of organic solvent; the curing agent part B consists of modified amine and the organic solvent. The primer disclosed by the invention has excellent adhesive force, good flexibility, outstanding moisture resistance and good construction performance, and is particularly suitable for coating megawatt wind turbine blades in a humid environment.
However, this technical solution focuses more on the surface properties such as adhesion and moisture resistance, and has a drawback on how to improve the impact resistance and elongation resistance from the aspect of mechanical properties through the interaction of different components in the primer. Wind-powered electricity generation blade receives impact such as wind direction change and blade vibration easily at the operation in-process, makes blade surface produce tiny crackle easily, along with periodic impact force effect, makes the blade take place crack propagation problem, directly influences the life of fan.
Disclosure of Invention
The invention aims to provide an impact-resistant and extension-resistant water-based primer for a wind power blade, and a preparation method and a use method thereof.
The invention can be realized by the following technical scheme:
the invention discloses an impact-resistant and extension-resistant water-based primer for a wind turbine blade, which consists of a component A and a component B in a weight ratio of 2: 1:
the component A comprises the following components in parts by weight: 30-55 parts of EP120 resin with the epoxy equivalent of 220-240, 0.3-0.6 part of dispersant, 25-40 parts of filler and 0.5 part of carbon black; the component B comprises the following components in parts by weight: 50-70 parts of water-based phenolic aldehyde amine curing agent, 20-30 parts of deionized water, 0.5-1.5 parts of defoaming agent and 0.1-0.5 part of flatting agent; the filler is a mixed filler, and the mixed filler is a mixed system of titanium dioxide, silicon micropowder, talcum powder, molybdenum disulfide micropowder and tetrapod-like zinc oxide whiskers.
Further, EP-120 is prepared from hydrophilic polyetheramine-modified epoxy resins.
Furthermore, the component A is obtained by mixing, dispersing and grinding EP-120, a dispersing agent, a filler and carbon black, and the solid content is 96-100%.
Furthermore, EP-120 contained in the whole solid has self-emulsifying property in water, and the curing agent is water-based phenolic aldehyde amine.
The preparation method of the water-based primer for protecting the impact-resistant and extension-resistant wind power blade specifically comprises the following steps:
s1, preparation of component A: adding epoxy resin EP-120 into a stirring cylinder, starting stirring at the stirring speed of 800r/min of 400-;
s2, preparation of component B: adding the water-based phenolic aldehyde amine curing agent, the flatting agent, the defoaming agent, the preservative, the deionized water and the like into a stirring cylinder, and dispersing for more than 15min at the stirring speed of 400-800r/min to obtain a component B;
s3, subpackaging for later use: and (3) taking the component A and the component B with the mass ratio of (A: B) to (2: 1), and respectively and independently packaging for later use.
The invention also provides a use method of the water-based primer for protecting the impact-resistant and extension-resistant wind power blade, which specifically comprises the following steps: uniformly mixing the component A and the component B in a mass ratio of 2:1 to obtain a coating mixture, and then coating the coating mixture on the surface of the wind power blade in a rolling coating or brushing coating or spraying manner.
The impact-resistant and extension-resistant water-based primer for the wind power blade, and the preparation method and the use method thereof have the following beneficial effects:
firstly, impact resistance is realized, a bi-component system adopts EP120 epoxy emulsion as main resin, mixed filler is fully dispersed in a primer system, and molybdenum disulfide in the mixed filler has two-dimensional mechanical properties; the tetrapod-like zinc oxide whiskers grow in a single crystal form, are similar to short fibers in shape, and are highly ordered in atomic structure arrangement when crystallized, and the existence of defects such as particle interfaces, cavities, dislocations and structural incompletion enables the strength of the whiskers to be close to the theoretical value of complete crystals to serve as a toughening agent of the filler; titanium dioxide, silicon micropowder and talcum powder are uniformly dispersed among particle interfaces, cavities, dislocations and two-dimensional molybdenum disulfide of the tetrapod-like zinc oxide whiskers, so that the two-dimensional mechanical property of the molybdenum disulfide and the fiber mechanical property of the tetrapod-like zinc oxide whiskers are organically combined to form a three-dimensional network, and the impact resistance of the primer is effectively improved;
secondly, the four-needle zinc oxide whisker is resistant to extension, because a mixed filler system is adopted, the four-needle zinc oxide whisker has a fibrous structure and can bear extension of an irregular layer, the molybdenum disulfide effectively slows down the possibility of cracks caused by two-dimensional extension, and the titanium dioxide, the silicon powder and the talcum powder are mechanically lubricated on the left and right of points, so that the ductility resistance of the primer is effectively improved;
and thirdly, the adhesive force is high, the requirement of the adhesive force drawing strength of the wind blade reaches more than 7Mpa, so a two-component design is needed, the component A adopts EP120, the purpose that the common epoxy emulsion has part of organic solvent and has some influence on the environment and construction personnel, and the EP120 does not contain organic solvent at all, has very good stability, can be diluted by adding water at will during construction by matching with a water-based phenolic aldehyde amine curing agent, does not discharge VOC, and achieves real environmental protection.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the following detailed description will be made on the products of the present invention with reference to the examples.
Example 1
The invention discloses an impact-resistant and extension-resistant water-based primer for a wind power blade, which consists of a component A and a component B in a weight ratio of 2: 1: the component A comprises the following components in parts by weight: 55 parts of EP120 resin with the epoxy equivalent of 220-240, 0.45 part of dispersant, 25 parts of filler and 0.5 part of carbon black; the component B comprises the following components in parts by weight: 70 parts of water-based phenolic aldehyde amine curing agent, 25 parts of deionized water, 0.5 part of defoaming agent and 0.5 part of flatting agent; the filler is a mixed filler, and the mixed filler is a mixed system of titanium dioxide, silicon micropowder, talcum powder, molybdenum disulfide micropowder and tetrapod-like zinc oxide whiskers.
In this example, EP-120 was prepared from a hydrophilic polyetheramine-modified epoxy resin; the component A is obtained by mixing EP-120, a dispersant, a filler and carbon black and then dispersing and grinding, and the solid content is 96-100%.
Example 2
The invention discloses an impact-resistant and extension-resistant water-based primer for a wind power blade, which consists of a component A and a component B in a weight ratio of 2: 1: the component A comprises the following components in parts by weight: 42 parts of EP120 resin with the epoxy equivalent of 220-240, 0.3 part of dispersant, 40 parts of filler and 0.5 part of carbon black; the component B comprises the following components in parts by weight: 60 parts of water-based phenolic aldehyde amine curing agent, 20 parts of deionized water, 1.5 parts of defoaming agent and 0.3 part of flatting agent; the filler is a mixed filler, and the mixed filler is a mixed system of titanium dioxide, silicon micropowder, talcum powder, molybdenum disulfide micropowder and tetrapod-like zinc oxide whiskers.
In this example, EP-120 was prepared from a hydrophilic polyetheramine-modified epoxy resin; the component A is obtained by mixing, dispersing and grinding EP-120, a dispersing agent, a filler and carbon black, and the solid content is 96-100%; the totally solid EP-120 has self-emulsifying property in water, and the curing agent is water-based phenolic aldehyde amine.
Example 3
The invention discloses an impact-resistant and extension-resistant water-based primer for a wind turbine blade, which consists of a component A and a component B in a weight ratio of 2: 1: the component A comprises the following components in parts by weight: 30 parts of EP120 resin with the epoxy equivalent of 220-240, 0.6 part of dispersant, 32 parts of filler and 0.5 part of carbon black; the component B comprises the following components in parts by weight: 50 parts of water-based phenolic aldehyde amine curing agent, 30 parts of deionized water, 0.755 part of defoaming agent and 0.1 part of flatting agent; the filler is a mixed filler, and the mixed filler is a mixed system of titanium dioxide, silicon micropowder, talcum powder, molybdenum disulfide micropowder and tetrapod-like zinc oxide whiskers.
In this example, EP-120 was prepared from a hydrophilic polyetheramine-modified epoxy resin; the component A is obtained by mixing EP-120, a dispersant, a filler and carbon black and then dispersing and grinding, and the solid content is 96-100%.
Example 4
The invention discloses an impact-resistant and extension-resistant water-based primer for a wind power blade, which consists of a component A and a component B in a weight ratio of 2: 1: the component A comprises the following components in parts by weight: 40 parts of EP120 resin with the epoxy equivalent of 220-240, 0.4 part of dispersant, 30 parts of filler and 0.5 part of carbon black; the component B comprises the following components in parts by weight: 55 parts of water-based phenolic aldehyde amine curing agent, 22 parts of deionized water, 0.9 part of defoaming agent and 0.2 part of flatting agent; the filler is a mixed filler, and the mixed filler is a mixed system of titanium dioxide, silicon micropowder, talcum powder, molybdenum disulfide micropowder and tetrapod-like zinc oxide whiskers.
In this example, EP-120 was prepared from a hydrophilic polyetheramine-modified epoxy resin; the component A is obtained by mixing, dispersing and grinding EP-120, a dispersing agent, a filler and carbon black, and the solid content is 96-100%; the totally solid EP-120 has self-emulsifying property in water, and the curing agent is water-based phenolic aldehyde amine.
Example 5
The invention also provides a preparation method of the impact-resistant and extension-resistant water-based primer for the wind turbine blade, which specifically comprises the following steps:
s1, preparation of component A: adding epoxy resin EP-120 into a stirring cylinder, starting stirring at the stirring speed of 800r/min of 400-;
s2, preparation of component B: adding the water-based phenolic aldehyde amine curing agent, the flatting agent, the defoaming agent, the deionized water and the like into a stirring cylinder, and dispersing for more than 15min at the stirring speed of 400-800r/min to obtain a component B;
s3, subpackaging for later use: and (3) taking the component A and the component B in the mass ratio of (A: B) to (2: 1), and respectively and independently packaging for later use.
Example 6
Another aspect of the invention is a use method for protecting the impact-resistant and extension-resistant water-based primer for the wind turbine blade, which specifically comprises the following steps: uniformly mixing the component A and the component B in a mass ratio of 2:1 to obtain a coating mixture, and coating the coating mixture on the surface of the wind power blade in a rolling coating or brushing coating or spraying manner.
Application examples
In order to verify the performance of the product of the invention, examples 1 to 4 were prepared by the preparation method of example 5, and then sprayed by the method of example 6, and then correlation performance tests were performed, and the specific test effects are shown in the following table:
table 1 results of performance testing
Wherein the elongation at break is performed by a test method of GB/T16777 or ISO 527-3, the standard requirement is more than 30% at room temperature and more than 10% at-40 ℃, and therefore, the product of the application embodiment of the invention meets the test requirement; the impact resistance is tested by a GB/T1732 method, the standard requirement is more than or equal to 50cm, and the product meets the standard requirement; the drawing adhesion is carried out by adopting a test method of GB/T5210 or ISO 4624ASTM D4541, the test requirement is that the average value is more than or equal to 7MPa, the minimum single value is more than or equal to 5MPa, and the product meets the test requirement; the flexibility test is carried out by GB/T6742 or ISO1519 or ASTM D522, and the indexes are as follows: <1mm, -40 ℃: <5mma, the product of the invention meets the test requirements.
The above embodiments are only specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications as would be obvious to one having the ordinary skill in this art may be made without departing from the spirit and scope of the invention, and such obvious alternatives are intended to be included within the scope of the invention.
Claims (6)
1. An impact-resistant and extension-resistant water-based primer for a wind power blade is characterized by consisting of a component A and a component B in a weight ratio of 2: 1:
the component A comprises the following components in parts by weight: 30-55 parts of EP120 resin with the epoxy equivalent of 220-240, 0.3-0.6 part of dispersant, 25-40 parts of filler and 0.5 part of carbon black;
the component B comprises the following components in parts by weight: 50-70 parts of water-based phenolic aldehyde amine curing agent, 20-30 parts of deionized water, 0.5-1.5 parts of defoaming agent and 0.1-0.5 part of flatting agent;
the filler is a mixed filler, and the mixed filler is a mixed system of titanium dioxide, silicon micropowder, talcum powder, molybdenum disulfide micropowder and tetrapod-like zinc oxide whiskers.
2. The impact resistant, elongation resistant waterborne primer for wind blades of claim 1, wherein: the EP-120 is prepared from hydrophilic polyetheramine-modified epoxy resins.
3. The impact resistant, elongation resistant waterborne primer for wind blades of claim 2, wherein: the component A is obtained by mixing, dispersing and grinding EP-120, a dispersing agent, a filler and carbon black, and the solid content is 96-100%.
4. The impact resistant, elongation resistant waterborne primer for wind blades of claim 3, wherein: the fully solid EP-120 epoxy resin has self-emulsifying property in water, and the curing agent is water-borne phenol-aldehyde amine.
5. A method of preparing the impact-resistant, elongation-resistant waterborne primer for wind blades of any of claims 1 to 4, characterized by comprising the steps of:
s1, preparation of component A: adding epoxy resin EP-120 into a stirring cylinder, starting stirring at the stirring speed of 400-800r/min, then sequentially adding a dispersing agent and a filler into the stirring cylinder, and stirring for more than 30min until the fineness of the mixture is 40um to obtain a component A;
s2, preparation of component B: adding the water-based phenolic aldehyde amine curing agent, the flatting agent, the defoaming agent, the preservative, the deionized water and the like into a stirring cylinder, and dispersing for more than 15min at the stirring speed of 400-800r/min to obtain a component B;
s3, subpackaging for later use: and (3) taking the component A and the component B with the mass ratio of (A: B) to (2: 1), and respectively and independently packaging for later use.
6. Use of the water based primer for impact resistant, elongation resistant wind blades according to any of claims 1 to 4, characterized in that it comprises the following steps: uniformly mixing the component A and the component B in a mass ratio of 2:1 to obtain a coating mixture, and coating the coating mixture on the surface of the wind power blade in a rolling coating or brushing coating or spraying manner.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210204287.4A CN114773947A (en) | 2022-03-03 | 2022-03-03 | Impact-resistant and extension-resistant water-based primer for wind turbine blade, and preparation method and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210204287.4A CN114773947A (en) | 2022-03-03 | 2022-03-03 | Impact-resistant and extension-resistant water-based primer for wind turbine blade, and preparation method and application method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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