Preparation method of anti-icing super-hydrophobic coating for wind power blade

Abstract

The invention discloses a preparation method of an anti-icing super-hydrophobic coating for a wind power blade, and relates to the technical field of manufacturing of wind power blades, the anti-icing super-hydrophobic coating is applied to a wind power blade finish paint coating, and the anti-icing super-hydrophobic coating is composed of FEVE fluorocarbon resin, cross-linked polydivinylbenzene nanotubes PDVB NTs and super-hydrophobic SiO2-F. The preparation method of the anti-icing super-hydrophobic coating for the wind power blade has the advantages that the wind power generation operation efficiency is improved, generator operation stagnation caused by weather and too low temperature of a wind power product is reduced, the operation smoothness and stability are improved, and the influence on economic output is reduced. Meanwhile, the super-hydrophobic surface paint coating further has self-cleaning performance, the surface of the blade can be effectively cleaned, and the appearance cleanliness of the surface of the blade is improved. Finally, the surface of the blade can be coated with ice up to hundreds of kilograms, no matter the attached ice blocks fall off or the blade is broken, great potential safety hazards exist, and the super-hydrophobic surface paint coating can eliminate the potential safety hazards caused by the ice coating of the blade.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine blade manufacturing, and in particular to a method for preparing a super-hydrophobic coating for preventing icing on wind turbine blades. Background Art

[0002] The present invention provides a super hydrophobic coating with a simple preparation process, low application cost and excellent aging resistance, which solves the safety hazards caused by low generator operation efficiency, blade surface pollution and high-altitude falling caused by ice on the surface of wind power generation blades in low temperature and humid environment. This method can reduce operation and maintenance costs, improve power generation efficiency in low temperature environment and ensure stable operation of wind turbines. Summary of the invention

[0003] 1. Technical issues to be resolved

[0004] In view of the shortcomings of the prior art, the present invention provides a method for preparing a super-hydrophobic coating for wind turbine blades to prevent icing. By providing a super-hydrophobic coating with a simple preparation process, low application cost and excellent aging resistance, the invention solves the safety hazards caused by low generator operation efficiency, dirty blade surface and high-altitude falling caused by icing on the surface of wind turbine blades in low temperature and humid environment. This method can reduce operation and maintenance costs, improve power generation efficiency in low temperature environments, and ensure stable operation of wind turbines.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the present invention is implemented by the following technical solutions: a method for preparing a super-hydrophobic coating for wind turbine blades to prevent icing, the super-hydrophobic coating for wind turbine blades to prevent icing is applied to the topcoat coating of wind turbine blades, and is composed of three substances: FEVE fluorocarbon resin, cross-linked polydivinylbenzene nanotubes PDVB NTs and super-hydrophobic SiO2-F;

[0007] The specific steps of the method for preparing the super hydrophobic coating for wind turbine blade anti-icing are as follows:

[0008] S1. Preparation of cross-linked polydivinylbenzene nanotubes (PDVB NTs) by cationic polymerization;

[0009] S2, using heptadecafluorodecyltrimethoxysilane to modify gas phase SiO2 to obtain super hydrophobic SiO2-F;

[0010] S3, respectively adding cross-linked polydivinylbenzene nanotubes PDVB NTs, super hydrophobic SiO2-F and FEVE fluorocarbon resin in appropriate proportions into a mixing device, fully mixing to obtain a mixed coating, and spraying the mixed coating on the prepared primer by a spraying method.

[0011] Preferably, the preparation method of the cross-linked polydivinylbenzene nanotubes PDVB NTs specifically comprises the following steps:

[0012] A1. Disperse 18 g of DVB divinylbenzene monomer in 1 L of cyclohexane and stir evenly at 25 °C. During the stirring process, introduce argon gas to remove the air in the flask.

[0013] A2, after stirring evenly, add 1.5g initiator dropwise into the above mixture;

[0014] A3. After sufficient stirring, the reaction product is filtered, and ethanol is used to remove the residual initiator and monomer to obtain the product cross-linked polydivinylbenzene nanotubes PDVB NTs.

[0015] Preferably, in step A2, the initiator is boron trifluoride ethyl ether BFEE.

[0016] Preferably, the preparation method of the super-hydrophobic SiO2-F specifically comprises the following steps:

[0017] B1, disperse 10g of SiO2 particles in 1L of ethanol, and then add H2O, NH3·H2O and heptadecafluorodecyltrimethoxysilane PFS in sequence;

[0018] B2. After stirring at room temperature for 12 h, the reaction product was washed and collected, and then dried to obtain superhydrophobic SiO2-F particles.

[0019] Preferably, 0.5-1.5 mL H2O, 0.2-0.4 mL NH3·H2O and 6-8 mL heptadecafluorodecyltrimethoxysilane PFS are added in step B1.

[0020] Preferably, the method for preparing the mixed coating in step S3 specifically comprises the following steps:

[0021] C1. Disperse 12g of FEVE fluorocarbon resin and 1.2g of curing agent in 70ml of butyl acetate under ultrasonication;

[0022] C2, then 0.52 g of cross-linked polydivinylbenzene nanotubes PDVB NTs and 1.2 g of superhydrophobic SiO2-F were placed in the solution of step C1, followed by magnetic stirring for 30 minutes to obtain a complete suspension;

[0023] C3. Next, use a spray gun to spray the solution onto the pretreated steel plate at the required pressure;

[0024] C4. Finally, the mixed coating was obtained after curing at room temperature for 1 h.

[0025] Preferably, the working pressure of the spray gun in step C3 is 4-6 bar.

[0026] Preferably, in step C1, the dispersion mixing time of dispersing the FEVE fluorocarbon resin and the curing agent in butyl acetate is 9-11 minutes.

[0027] (III) Beneficial effects

[0028] The present invention provides a method for preparing a super-hydrophobic coating for preventing ice coating on wind turbine blades. Compared with the prior art, the following beneficial effects are possessed: the method for preparing a super-hydrophobic coating for preventing ice coating on wind turbine blades, the super-hydrophobic coating for preventing ice coating on wind turbine blades is applied to wind turbine blade topcoat coating, which is composed of FEVE fluorocarbon resin, cross-linked polydivinylbenzene nanotubes PDVB NTs and super-hydrophobic SiO2-F three kinds of substances, with improving wind power generation operation efficiency, reducing the stagnation of generator operation caused by wind power products due to weather reasons and low temperature, improving smooth operation stability, reducing the impact on economic output. Meanwhile, the super-hydrophobic topcoat coating also has self-cleaning performance, can effectively clean the blade surface, improve the appearance neatness of the blade surface. Finally, the blade surface can be covered with ice up to hundreds of kilograms, whether it is the attached ice cubes falling, or the blades breaking, there is a great potential safety hazard, and the super-hydrophobic topcoat coating can eliminate the potential safety hazard caused by these blades covering ice. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a flow chart of the preparation method of the present invention;

[0030] Figure 2 This is a schematic diagram of comparative data of examples of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 2 The present invention provides four technical solutions: a method for preparing a super-hydrophobic coating for preventing ice from forming on wind turbine blades, specifically including the following embodiments:

[0033] Embodiment 1: A method for preparing a super-hydrophobic coating for preventing ice from forming on wind turbine blades. The super-hydrophobic coating for preventing ice from forming on wind turbine blades is applied to a topcoat coating on wind turbine blades, and is composed of three substances: FEVE fluorocarbon resin, cross-linked polydivinylbenzene nanotubes PDVB NTs, and super-hydrophobic SiO2-F;

[0034] The specific steps of the method for preparing the super hydrophobic coating for wind turbine blade anti-icing are as follows:

[0035] S1. Preparation of cross-linked polydivinylbenzene nanotubes (PDVB NTs) by cationic polymerization;

[0036] S2, using heptadecafluorodecyltrimethoxysilane to modify gas phase SiO2 to obtain super hydrophobic SiO2-F;

[0037] S3, respectively adding cross-linked polydivinylbenzene nanotubes PDVB NTs, super hydrophobic SiO2-F and FEVE fluorocarbon resin in appropriate proportions into a mixing device, fully mixing to obtain a mixed coating, and spraying the mixed coating on the prepared primer by a spraying method.

[0038] In an embodiment of the present invention, the preparation method of cross-linked polydivinylbenzene nanotubes PDVB NTs specifically comprises the following steps:

[0039] A1. Disperse 18 g of DVB divinylbenzene monomer in 1 L of cyclohexane and stir evenly at 25 °C. During the stirring process, introduce argon gas to remove the air in the flask.

[0040] A2, after stirring evenly, add 1.5g of initiator dropwise to the above mixed solution, the initiator is boron trifluoride ether BFEE;

[0041] A3. After sufficient stirring, the reaction product is filtered, and ethanol is used to remove the residual initiator and monomer to obtain the product cross-linked polydivinylbenzene nanotubes PDVB NTs.

[0042] In an embodiment of the present invention, the preparation method of super-hydrophobic SiO2-F specifically comprises the following steps:

[0043] B1, disperse 10g of SiO2 particles in 1L of ethanol, then add 1mL of H2O, 0.3mL of NH3·H2O and 7mL of heptadecafluorodecyltrimethoxysilane PFS in sequence;

[0044] B2. After stirring at room temperature for 12 h, the reaction product was washed and collected, and then dried to obtain superhydrophobic SiO2-F particles.

[0045] In the embodiment of the present invention, the method for preparing the mixed coating in step S3 specifically comprises the following steps:

[0046] C1. Disperse 12 g of FEVE fluorocarbon resin and 1.2 g of curing agent in 70 ml of butyl acetate under ultrasonication for 10 minutes.

[0047] C2, then 0.52 g of cross-linked polydivinylbenzene nanotubes PDVB NTs and 1.2 g of superhydrophobic SiO2-F were placed in the solution of step C1, followed by magnetic stirring for 30 minutes to obtain a complete suspension;

[0048] C3. Then, use a spray gun to spray the solution onto the pretreated steel plate at the required pressure. The working pressure of the spray gun is 5 bar.

[0049] C4. Finally, the mixed coating was obtained after curing at room temperature for 1 h.

[0050] Embodiment 2: A method for preparing a super-hydrophobic coating for preventing ice from forming on wind turbine blades. The super-hydrophobic coating for preventing ice from forming on wind turbine blades is applied to a topcoat coating on wind turbine blades, and is composed of three substances: FEVE fluorocarbon resin, cross-linked polydivinylbenzene nanotubes PDVB NTs, and super-hydrophobic SiO2-F.

[0051] The specific steps of the method for preparing the super hydrophobic coating for wind turbine blade anti-icing are as follows:

[0052] S1. Preparation of cross-linked polydivinylbenzene nanotubes (PDVB NTs) by cationic polymerization;

[0053] S2, using heptadecafluorodecyltrimethoxysilane to modify gas phase SiO2 to obtain super hydrophobic SiO2-F;

[0054] S3, respectively adding cross-linked polydivinylbenzene nanotubes PDVB NTs, super hydrophobic SiO2-F and FEVE fluorocarbon resin in appropriate proportions into a mixing device, fully mixing to obtain a mixed coating, and spraying the mixed coating on the prepared primer by a spraying method.

[0055] In an embodiment of the present invention, the preparation method of cross-linked polydivinylbenzene nanotubes PDVB NTs specifically comprises the following steps:

[0056] A1. Disperse 18 g of DVB divinylbenzene monomer in 1 L of cyclohexane and stir evenly at 25 °C. During the stirring process, introduce argon gas to remove the air in the flask.

[0057] A2, after stirring evenly, add 1.5g of initiator dropwise to the above mixed solution, the initiator is boron trifluoride ether BFEE;

[0058] A3. After sufficient stirring, the reaction product is filtered, and ethanol is used to remove the residual initiator and monomer to obtain the product cross-linked polydivinylbenzene nanotubes PDVB NTs.

[0059] In an embodiment of the present invention, the preparation method of super-hydrophobic SiO2-F specifically comprises the following steps:

[0060] B1, disperse 10g of SiO2 particles in 1L of ethanol, then add 0.5mL of H2O, 0.2mL of NH3·H2O and 6mL of heptadecafluorodecyltrimethoxysilane PFS in sequence;

[0061] B2. After stirring at room temperature for 12 h, the reaction product was washed and collected, and then dried to obtain superhydrophobic SiO2-F particles.

[0062] In the embodiment of the present invention, the method for preparing the mixed coating in step S3 specifically comprises the following steps:

[0063] C1. Disperse 12 g of FEVE fluorocarbon resin and 1.2 g of curing agent in 70 ml of butyl acetate under ultrasonication for 9 minutes.

[0064] C2, then 0.52 g of cross-linked polydivinylbenzene nanotubes PDVB NTs and 1.2 g of superhydrophobic SiO2-F were placed in the solution of step C1, followed by magnetic stirring for 30 minutes to obtain a complete suspension;

[0065] C3. Then, use a spray gun to spray the solution onto the pretreated steel plate at the required pressure. The working pressure of the spray gun is 4 bar.

[0066] C4. Finally, the mixed coating was obtained after curing at room temperature for 1 h.

[0067] Embodiment 3: A method for preparing a super-hydrophobic coating for preventing ice from forming on wind turbine blades. The super-hydrophobic coating for preventing ice from forming on wind turbine blades is applied to a topcoat coating on wind turbine blades, and is composed of three substances: FEVE fluorocarbon resin, cross-linked polydivinylbenzene nanotubes PDVB NTs, and super-hydrophobic SiO2-F.

[0068] The specific steps of the method for preparing the super hydrophobic coating for wind turbine blade anti-icing are as follows:

[0069] S1. Preparation of cross-linked polydivinylbenzene nanotubes (PDVB NTs) by cationic polymerization;

[0070] S2, using heptadecafluorodecyltrimethoxysilane to modify gas phase SiO2 to obtain super hydrophobic SiO2-F;

[0071] S3, respectively adding cross-linked polydivinylbenzene nanotubes PDVB NTs, super hydrophobic SiO2-F and FEVE fluorocarbon resin in appropriate proportions into a mixing device, fully mixing to obtain a mixed coating, and spraying the mixed coating on the prepared primer by a spraying method.

[0072] In an embodiment of the present invention, the preparation method of cross-linked polydivinylbenzene nanotubes PDVB NTs specifically comprises the following steps:

[0073] A1. Disperse 18 g of DVB divinylbenzene monomer in 1 L of cyclohexane and stir evenly at 25 °C. During the stirring process, introduce argon gas to remove the air in the flask.

[0074] A2, after stirring evenly, add 1.5g of initiator dropwise to the above mixed solution, the initiator is boron trifluoride ether BFEE;

[0075] A3. After sufficient stirring, the reaction product is filtered, and ethanol is used to remove the residual initiator and monomer to obtain the product cross-linked polydivinylbenzene nanotubes PDVB NTs.

[0076] In an embodiment of the present invention, the preparation method of super-hydrophobic SiO2-F specifically comprises the following steps:

[0077] B1, disperse 10g of SiO2 particles in 1L of ethanol, then add 1.5mL of H2O, 0.4mL of NH3·H2O and 8mL of heptadecafluorodecyltrimethoxysilane PFS in sequence;

[0078] B2. After stirring at room temperature for 12 h, the reaction product was washed and collected, and then dried to obtain superhydrophobic SiO2-F particles.

[0079] In the embodiment of the present invention, the method for preparing the mixed coating in step S3 specifically comprises the following steps:

[0080] C1. Disperse 12 g of FEVE fluorocarbon resin and 1.2 g of curing agent in 70 ml of butyl acetate under ultrasonication for 11 minutes.

[0081] C2, then 0.52 g of cross-linked polydivinylbenzene nanotubes PDVB NTs and 1.2 g of superhydrophobic SiO2-F were placed in the solution of step C1, followed by magnetic stirring for 30 minutes to obtain a complete suspension;

[0082] C3. Then, use a spray gun to spray the solution onto the pretreated steel plate at the required pressure. The working pressure of the spray gun is 6 bar.

[0083] C4. Finally, the mixed coating was obtained after curing at room temperature for 1 h.

[0084] Embodiment 4: A method for preparing a super-hydrophobic coating for preventing ice from forming on wind turbine blades, wherein the super-hydrophobic coating for preventing ice from forming on wind turbine blades is applied to a topcoat coating on wind turbine blades, and is composed of three substances: FEVE fluorocarbon resin, cross-linked polydivinylbenzene nanotubes PDVB NTs, and super-hydrophobic SiO2-F;

[0085] The specific steps of the method for preparing the super hydrophobic coating for wind turbine blade anti-icing are as follows:

[0086] S1. Preparation of cross-linked polydivinylbenzene nanotubes (PDVB NTs) by cationic polymerization;

[0087] S2, using heptadecafluorodecyltrimethoxysilane to modify gas phase SiO2 to obtain super hydrophobic SiO2-F;

[0088] S3, respectively adding cross-linked polydivinylbenzene nanotubes PDVB NTs, super hydrophobic SiO2-F and FEVE fluorocarbon resin in appropriate proportions into a mixing device, fully mixing to obtain a mixed coating, and spraying the mixed coating on the prepared primer by a spraying method.

[0089] In an embodiment of the present invention, the preparation method of cross-linked polydivinylbenzene nanotubes PDVB NTs specifically comprises the following steps:

[0090] A1. Disperse 18 g of DVB divinylbenzene monomer in 1 L of cyclohexane and stir evenly at 25 °C. During the stirring process, introduce argon gas to remove the air in the flask.

[0091] A2, after stirring evenly, add 1.5g of initiator dropwise to the above mixed solution, the initiator is boron trifluoride ether BFEE;

[0092] A3. After sufficient stirring, the reaction product is filtered, and ethanol is used to remove the residual initiator and monomer to obtain the product cross-linked polydivinylbenzene nanotubes PDVB NTs.

[0093] In an embodiment of the present invention, the preparation method of super-hydrophobic SiO2-F specifically comprises the following steps:

[0094] B1, disperse 10g of SiO2 particles in 1L of ethanol, then add 0.6mL of H2O, 0.3mL of NH3·H2O and 6.5mL of heptadecafluorodecyltrimethoxysilane PFS in sequence;

[0095] B2. After stirring at room temperature for 12 h, the reaction product was washed and collected, and then dried to obtain superhydrophobic SiO2-F particles.

[0096] In the embodiment of the present invention, the method for preparing the mixed coating in step S3 specifically comprises the following steps:

[0097] C1. Disperse 12 g of FEVE fluorocarbon resin and 1.2 g of curing agent in 70 ml of butyl acetate under ultrasonication for 10 minutes.

[0098] C2, then 0.52 g of cross-linked polydivinylbenzene nanotubes PDVB NTs and 1.2 g of superhydrophobic SiO2-F were placed in the solution of step C1, followed by magnetic stirring for 30 minutes to obtain a complete suspension;

[0099] C3. Then, use a spray gun to spray the solution onto the pretreated steel plate at the required pressure. The working pressure of the spray gun is 4 bar.

[0100] C4. Finally, the mixed coating was obtained after curing at room temperature for 1 h.

[0101] In summary, the present invention has the advantages of improving the efficiency of wind power generation operation, reducing the stagnation of generator operation caused by weather reasons and low temperature of wind power products, improving the smooth stability of operation, and reducing the impact on economic output. Meanwhile, the super-hydrophobic topcoat coating also has self-cleaning performance, can effectively clean the blade surface, and improve the neatness of the blade surface appearance. Finally, the blade surface can be covered with ice up to hundreds of kilograms, whether it is the attached ice cubes falling, or the blades breaking, there is a great potential safety hazard, and the super-hydrophobic topcoat coating can eliminate the potential safety hazard caused by these blades covered with ice.

[0102] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0103] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0104] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for preparing a super-hydrophobic coating for anti-icing of wind turbine blades, characterized in that: The super hydrophobic coating for wind turbine blade anti-icing is applied to the topcoat coating of wind turbine blades, and is composed of three substances: FEVE fluorocarbon resin, cross-linked polydivinylbenzene nanotubes PDVB NTs and super hydrophobic SiO2-F; The specific steps of the method for preparing the super hydrophobic coating for wind turbine blade anti-icing are as follows: S1. Preparation of cross-linked polydivinylbenzene nanotubes (PDVB NTs) by cationic polymerization; S2, using heptadecafluorodecyltrimethoxysilane to modify gas phase SiO2 to obtain super hydrophobic SiO2-F; S3, respectively adding cross-linked polydivinylbenzene nanotubes PDVB NTs, super hydrophobic SiO2-F and FEVE fluorocarbon resin in appropriate proportions into a mixing device, fully mixing to obtain a mixed coating, and spraying the mixed coating on the prepared primer by a spraying method.

2. The method for preparing a super-hydrophobic coating for anti-icing of wind turbine blades according to claim 1, characterized in that: The preparation method of the cross-linked polydivinylbenzene nanotubes PDVB NTs specifically comprises the following steps: A1. Disperse 18 g of DVB divinylbenzene monomer in 1 L of cyclohexane and stir evenly at 25 °C. During the stirring process, introduce argon gas to remove the air in the flask. A2, after stirring evenly, add 1.5g initiator dropwise into the above mixture; A3. After sufficient stirring, the reaction product is filtered, and ethanol is used to remove the residual initiator and monomer to obtain the product cross-linked polydivinylbenzene nanotubes PDVB NTs.

3. The method for preparing a super-hydrophobic coating for anti-icing of wind turbine blades according to claim 2, characterized in that: In the step A2, the initiator is boron trifluoride ether BFEE.

4. The method for preparing a super-hydrophobic coating for anti-icing of wind turbine blades according to claim 1, characterized in that: The preparation method of the super-hydrophobic SiO2-F specifically comprises the following steps: B1, disperse 10g of SiO2 particles in 1L of ethanol, and then add H2O, NH3·H2O and heptadecafluorodecyltrimethoxysilane PFS in sequence; B2. After stirring at room temperature for 12 h, the reaction product was washed and collected, and then dried to obtain superhydrophobic SiO2-F particles.

5. The method for preparing a super-hydrophobic coating for preventing ice formation on wind turbine blades according to claim 4, characterized in that: In the step B1, 0.5-1.5 mL H2O, 0.2-0.4 mL NH3·H2O and 6-8 mL heptadecafluorodecyltrimethoxysilane PFS were added.

6. The method for preparing a super-hydrophobic coating for anti-icing of wind turbine blades according to claim 1, characterized in that: The preparation method of the mixed coating in step S3 specifically comprises the following steps: C1. Disperse 12g of FEVE fluorocarbon resin and 1.2g of curing agent in 70ml of butyl acetate under ultrasonication; C2, then 0.52 g of cross-linked polydivinylbenzene nanotubes PDVB NTs and 1.2 g of superhydrophobic SiO2-F were placed in the solution of step C1, followed by magnetic stirring for 30 minutes to obtain a complete suspension; C3. Next, use a spray gun to spray the solution onto the pretreated steel plate at the required pressure; C4. Finally, the mixed coating was obtained after curing at room temperature for 1 h.

7. The method for preparing a super-hydrophobic coating for anti-icing of wind turbine blades according to claim 6, characterized in that: The working pressure of the spray gun in step C3 is 4-6 bar.

8. The method for preparing a super-hydrophobic coating for anti-icing of wind turbine blades according to claim 6, characterized in that: In step C1, the dispersion mixing time of dispersing the FEVE fluorocarbon resin and the curing agent in butyl acetate is 9-11 minutes.

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