CN114656869B - Wind power tower finish paint containing indium chloride coated carbon nanofibers and preparation method and use method thereof - Google Patents

Abstract

The invention discloses a wind power tower topcoat containing indium chloride-coated nano-carbon fibers, a preparation method and a use method thereof, and belongs to the technical field of anti-erosion anti-corrosion agents for offshore wind power. On the basis of the traditional topcoat coating, high-toughness nano-carbon fibers are added based on the fiber toughening mechanism, which not only improves the strength and toughness of the topcoat, but also significantly improves the erosion resistance of the paint layer, which is more suitable than traditional protective paint layers Anti-erosion protection for offshore wind turbines. Furthermore, the carbon nanofibers are coated with non-conductive indium chloride on the surface by physical vapor deposition, which avoids the decline of the corrosion resistance of the paint layer due to the addition of conductive carbon fibers. The preparation method of the present invention is simple and easy to obtain raw materials, and the prepared surface paint film has the characteristics of high toughness, high adhesion, erosion resistance, and corrosion resistance, and can significantly prolong the durability of the paint layer in the environment where waves impact such as wind power tower splash zones. safe service life.

Description

A wind power tower topcoat containing indium chloride coated nano-carbon fiber and its preparation method and use method

technical field

The invention belongs to the technical field of offshore wind power anti-erosion protection, and in particular relates to a wind power tower topcoat containing indium chloride-coated nano-carbon fibers and a preparation method and application method thereof.

Background technique

Sea breeze has the advantages of abundance, stability, and high power generation efficiency. However, due to the high salt content and high humidity in the ocean atmosphere, extremely high requirements are placed on the erosion resistance of offshore wind turbines. The service environment of offshore wind turbines is mainly divided into five types: atmospheric area, splash area, tidal range area, full immersion area, and sea mud area. The splash zone generally refers to the area 0-2 meters above the sea level, which is an area that can be splashed by waves but will not be submerged by sea water when the sea tide is high. In addition to being affected by the corrosive environment of the marine atmosphere, the splash zone is also soaked and impacted by the splash waves, and the alternating wet and dry is frequent, which is the area most likely to cause the coating to peel off and fail due to erosion.

At present, offshore wind turbines mainly rely on polymer coatings such as resins, and partially assist sacrificial anodes to achieve anti-erosion protection, thereby achieving the purpose of prolonging the service life of offshore wind turbines. Although the traditional resin-based polymer coating has good flexibility and corrosion resistance, its own characteristics make its erosion resistance low. In particular, resin-based polymer coatings are prone to problems such as cracking and peeling in marine environments such as splash zones due to the impact of waves and other harsh environments, which greatly reduces the protective effect and service life of the coating, and increases the It is still the cost of anti-erosion protection for wind turbines.

Contents of the invention

In order to solve the above problems, the present invention discloses a wind power tower topcoat containing indium chloride coated nano-carbon fiber and its preparation method and application method. The prepared topcoat paint film has high toughness, high adhesion, and erosion resistance , Corrosion resistance, can significantly prolong the safe service life of the paint layer in the wave impact environment such as wind power tower splash zone.

The present invention is achieved through the following technical solutions:

The invention discloses a wind power tower topcoat containing indium chloride coated nano-carbon fiber, which comprises the following raw materials in parts by mass:

50-60 parts of resin, 3-5 parts of dispersant, 5-7 parts of fumed silica, 2-3 parts of leveling agent, 2-3 parts of drier, 2-4 parts of light stabilizer, indium chloride package Covering 5-15 parts of nano-carbon fiber, 0.5-2 parts of wetting agent and 0.1-1 part of o-benzoylsulfonimide.

Preferably, the resin is polyurethane resin, the dispersant is acrylate, the leveling agent is fluorine-modified acrylate, the drier is organotin drier T-12, and the light stabilizer is aniline oxalic acid light absorber and hindered Compound of amine light stabilizer, wetting agent is dibutyl phthalate or sodium dodecyl diphenyl ether disulfonate.

Further preferably, in the light stabilizer, the mass ratio of the aniline oxalic acid light absorber to the hindered amine light stabilizer is 1:1.

Preferably, the indium chloride-coated carbon nanofibers have a diameter of 100-700 nm and a length of 10-30 μm.

Preferably, the carbon nanofiber coated with indium chloride is prepared by coating the carbon nanofiber with indium chloride by physical vapor deposition.

The invention discloses a preparation method of a wind power tower topcoat containing indium chloride coated nano-carbon fiber, which comprises the following steps:

Fully stir 50-60 parts of resin, 5-15 parts of indium chloride-coated carbon nanofibers, 0.5-2 parts of wetting agent, 3-5 parts of dispersant and 5-7 parts of fumed silica;

Step 2: On the basis of the mixed system obtained in step 1, add 2-3 parts of leveling agent, 2-3 parts of drier, 0.1-1 part of o-benzoylsulfonimide and 2-4 parts of The light stabilizer is fully stirred until it is completely uniformly dispersed, and after standing for defoaming, a wind power tower topcoat containing indium chloride-coated carbon nanofibers is obtained;

The above-mentioned dosage parts are all parts by mass.

Preferably, in step 1, the stirring speed is 550-600rpm, and the stirring time is 20-35min.

Preferably, in step 2, the stirring speed is 550-600 rpm, and after all the components are added, the stirring is continued for 10-25 minutes.

The invention discloses a method for using the wind power tower topcoat containing indium chloride coated nano-carbon fibers prepared by the above preparation method. When the prepared wind power tower top paint containing indium chloride coated nano-carbon fibers is used, add 30-40 parts of polyether polyol is used as curing agent, after mixing evenly, add diluent to adjust to the required viscosity, and evenly coat the surface of the workpiece by spraying, roller coating or brushing.

Preferably, the dry film thickness of the topcoat after painting is 100-150 μm.

Compared with the prior art, the present invention has the following beneficial technical effects:

The wind power tower topcoat containing indium chloride coated nano-carbon fiber disclosed by the present invention, on the basis of traditional topcoat coating, adds high-toughness nano-carbon fiber based on the fiber toughening mechanism, which can not only improve the strength and toughness of the topcoat, It can also significantly improve the erosion resistance of the paint layer, which is more suitable for the erosion protection of offshore wind turbines compared with traditional protective paint layers. Furthermore, the present invention coats a layer of non-conductive indium chloride on the surface of carbon fibers by means of physical vapor deposition, which avoids the decline in the corrosion resistance of the paint layer due to the addition of conductive carbon fibers. At the same time, the present invention improves the binding force between the carbon nanofiber and the matrix by adding a wetting agent, ensuring the realization of the excellent performance of the toughening agent. Finally, the stress-relief agent o-benzoylsulfonimide is added to the topcoat to solve the problem that the stress of the paint film may be increased due to the addition of carbon nanofibers. Therefore, under the joint action of non-conductive indium chloride-coated nano-carbon fiber toughener, wetting agent and stress-relief agent, the prepared topcoat has excellent toughness, high adhesion, erosion resistance and wear resistance. It can exert excellent anti-erosion protection effect in harsh marine environments such as splash zones.

The preparation method and application method of the above-mentioned wind power tower topcoat containing indium chloride coated nano-carbon fiber disclosed by the present invention are easy to operate and convenient for on-site use.

Detailed ways

The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations. Unless otherwise specified, all references to parts in the embodiments are in parts by mass.

Example 1

Components of the paint film in this example: 50 parts of polyurethane; 5 parts of carbon nanofiber coated with indium chloride; 3 parts of acrylate; 5 parts of fumed silica; 2 parts of fluorine-modified acrylate; T-12 organotin drier 2 parts; 2 parts of the complex of aniline oxalic acid light absorber and hindered amine light stabilizer (1:1 by mass ratio); 0.5 parts of dibutyl phthalate; 0.1 part of o-benzoylsulfonimide ; 30 parts of polyether polyols.

Step 1: Add 50 parts of polyurethane to a clean container, and add 5 parts of indium chloride-coated carbon nanofibers, 0.5 parts of dibutyl phthalate, 3 parts of acrylate, and 5 parts of gas phase while stirring at a stirring speed of 600 rpm Silicon dioxide, after all the reagents are added, continue to stir for 20 minutes at a stirring speed of 600rpm;

Step 2: Add 2 parts of fluorine-modified acrylate, 2 parts of organotin drier T-12, 0.1 part of o-benzoylsulfonimide, 2 parts of A compound of aniline oxalic acid light absorber and hindered amine light stabilizer. After adding all the reagents, continue to stir at a stirring speed of 550rpm for 20min, and let stand until the bubbles completely disappear;

Step 3: Add 30 parts of polyether polyol to the slurry prepared in step 2, mix well, and then adjust the slurry to a suitable viscosity.

Step 4: Spray the slurry in step 3 on the low carbon steel plate.

Step 5: Let the test piece of step 4 stand at room temperature and dry, and the results of various technical indicators are shown in Table 1.

Example 2

Components of the paint film in this example: 53 parts of polyurethane; 10 parts of carbon nanofiber coated with indium chloride; 4 parts of acrylate; 6 parts of fumed silica; 2.5 parts of fluorine-modified acrylate; T-12 organotin drier 3 parts; 3 parts of compound of aniline oxalic acid light absorber and hindered amine light stabilizer (1:1 by mass ratio); 1 part of dibutyl phthalate; 0.6 part of o-benzoylsulfonimide ; 35 parts of polyether polyols.

Step 1: Add 53 parts of polyurethane to a clean container, and add 10 parts of indium chloride-coated carbon nanofibers, 1 part of dibutyl phthalate, 4 parts of acrylate, and 6 parts of gas phase while stirring at a stirring speed of 600 rpm Silicon dioxide, after all the reagents are added, continue to stir for 20 minutes at a stirring speed of 600rpm;

Step 2: Add 2.5 parts of fluorine-modified acrylate, 3 parts of organotin drier T-12, 0.6 parts of o-benzoylsulfonimide, 3 parts of A compound of aniline oxalic acid light absorber and hindered amine light stabilizer. Stir for 20 minutes after adding all the reagents, and let it stand until the bubbles completely disappear;

Step 3: Add 35 parts of polyether polyol to the slurry prepared in step 2, mix well, and then adjust the slurry to a suitable viscosity.

Step 4: Spray the slurry in step 3 on the low carbon steel plate.

Step 5: Let the test piece of step 4 stand at room temperature and dry, and the results of various technical indicators are shown in Table 2.

Example 3

Components of the paint film in this example: 55 parts of polyurethane; 12 parts of carbon nanofiber coated with indium chloride; 4 parts of acrylate; 6 parts of fumed silica; 2.5 parts of fluorine-modified acrylate; T-12 organotin drier 3 parts; 3 parts of compound of aniline oxalic acid light absorber and hindered amine light stabilizer (1:1 by mass ratio); 1 part of dibutyl phthalate; 0.6 part of o-benzoylsulfonimide ; 35 parts of polyether polyols.

Step 1: Add 55 parts of polyurethane to a clean container, and add 12 parts of indium chloride-coated carbon nanofibers, 1 part of dibutyl phthalate, 4 parts of acrylate, and 6 parts of gas phase while stirring at a stirring speed of 600 rpm Silicon dioxide, after all the reagents are added, continue to stir for 20 minutes at a stirring speed of 600rpm;

Step 2: Add 2.5 parts of fluorine-modified acrylate, 3 parts of organotin drier T-12, 0.6 parts of o-benzoylsulfonimide, 3 parts of A compound of aniline oxalic acid light absorber and hindered amine light stabilizer. After adding all the reagents, stir at a stirring speed of 550rpm for 20min, and let it stand until the bubbles completely disappear;

Step 3: Add 35 parts of polyether polyol to the slurry prepared in step 2, mix well, and then adjust the slurry to a suitable viscosity.

Step 4: Spray the slurry in step 3 on the low carbon steel plate.

Step 5: Let the test piece of step 4 stand at room temperature and dry, and the results of various technical indicators are shown in Table 3.

Example 4

Components of the paint film in this example: 55 parts of polyurethane; 12 parts of carbon nanofiber coated with indium chloride; 4 parts of acrylate; 6 parts of fumed silica; 2.5 parts of fluorine-modified acrylate; T-12 organotin drier 3 parts; 3 parts of compound of aniline oxalic acid light absorber and hindered amine light stabilizer (1:1 by mass ratio); 1 part of dibutyl phthalate; 0.6 part of o-benzoylsulfonimide ; 35 parts of polyether polyols.

Step 1: Add 55 parts of polyurethane to a clean container, and add 12 parts of indium chloride-coated carbon nanofibers, 1 part of dibutyl phthalate, 4 parts of acrylate, and 6 parts of gas phase while stirring at a stirring speed of 550 rpm Silica, continue to stir for 30 minutes after all the reagents are added;

Step 2: Add 2.5 parts of fluorine-modified acrylate, 3 parts of organotin drier T-12, 0.6 parts of o-benzoylsulfonimide, 3 parts of A compound of aniline oxalic acid light absorber and hindered amine light stabilizer. Stir for 25 minutes after adding all the reagents, and let it stand until the bubbles completely disappear;

Step 3: Add 35 parts of polyether polyol to the slurry prepared in step 2, mix well, and then adjust the slurry to a suitable viscosity.

Step 4: Spray the slurry in step 3 on the low carbon steel plate.

Step 5: Let the test piece of step 4 stand at room temperature and dry, and the results of various technical indicators are shown in Table 4.

Example 5

Components of the paint film in this example: 60 parts of polyurethane; 10 parts of carbon nanofiber coated with indium chloride; 4 parts of acrylate; 6 parts of fumed silica; 2.5 parts of fluorine-modified acrylate; T-12 organotin drier 3 parts; 3 parts of compound of aniline oxalic acid light absorber and hindered amine light stabilizer (1:1 by mass ratio); 1 part of dibutyl phthalate; 0.6 part of o-benzoylsulfonimide ; 35 parts of polyether polyols.

Step 1: Add 60 parts of polyurethane to a clean container, and add 10 parts of indium chloride-coated carbon nanofibers, 1 part of dibutyl phthalate, 4 parts of acrylate, and 6 parts of gas phase while stirring at a stirring speed of 600 rpm Silicon dioxide, after all the reagents are added, continue to stir for 20 minutes at a stirring speed of 600rpm;

Step 2: Add 2.5 parts of fluorine-modified acrylate, 3 parts of organotin drier T-12, 0.6 parts of o-benzoylsulfonimide, 3 parts of A compound of aniline oxalic acid light absorber and hindered amine light stabilizer. After adding all the reagents, stir at a stirring speed of 550rpm for 20min, and let it stand until the bubbles completely disappear;

Step 3: Add 35 parts of polyether polyol to the slurry prepared in step 2, mix well, and then adjust the slurry to a suitable viscosity.

Step 4: Spray the slurry in step 3 on the low carbon steel plate.

Step 5: Let the test piece of step 4 stand at room temperature and dry, and the results of various technical indicators are shown in Table 5.

Table 1

serial number project technical indicators result standard 1 Exterior normal appearance normal appearance GB/T1766-2008 2 Impact resistance 50cm 80cm GB/T1732-2020 3 Adhesion ≥5MPa 9.7MPa GB/T 31817-2015 4 flexibility 2mm 2mm GB/T6742-2007

Table 2

serial number project technical indicators result standard 1 Exterior normal appearance normal appearance GB/T1766-2008 2 Impact resistance 50cm 90cm GB/T1732-2020 3 Adhesion ≥5MPa 9.4MPa GB/T 31817-2015 4 flexibility 2mm 2mm GB/T6742-2007

table 3

serial number project technical indicators result standard 1 Exterior normal appearance normal appearance GB/T1766-2008 2 Impact resistance 50cm 100cm GB/T1732-2020 3 Adhesion ≥5MPa 9.9MPa GB/T 31817-2015 4 flexibility 2mm 2mm GB/T6742-2007

Table 4

serial number project technical indicators result standard 1 Exterior normal appearance normal appearance GB/T1766-2008 2 Impact resistance 50cm 95cm GB/T1732-2020 3 Adhesion ≥5MPa 9.5MPa GB/T 31817-2015 4 flexibility 2mm 2mm GB/T6742-2007

table 5

serial number project technical indicators result standard 1 Exterior normal appearance normal appearance GB/T1766-2008 2 Impact resistance 50cm 90cm GB/T1732-2020 3 Adhesion ≥5MPa 9.0MPa GB/T 31817-2015 4 flexibility 2mm 2mm GB/T6742-2007

The above results show that the anti-corrosion and impact-resistant top paint prepared according to the composition ratio of the present invention has properties such as high toughness, high impact resistance, and high bonding strength, and can meet the requirements of harsh environments such as splash zones for high life and long life of the paint film surface. maintenance cycle requirements.

It should be noted that the above description is only a part of the embodiments of the present invention, and equivalent changes made according to the system described in the present invention are all included in the protection scope of the present invention. Those skilled in the art to which the present invention belongs can replace the described specific examples in a similar manner, as long as they do not deviate from the structure of the present invention or exceed the scope defined in the claims, they all belong to the protection scope of the present invention.

Claims (8)

1. A wind power tower topcoat containing indium chloride coated nano-carbon fibers, characterized in that, in parts by mass, comprising the following raw materials: 50-60 parts of resin, 3-5 parts of dispersant, 5-7 parts of fumed silica, 2-3 parts of leveling agent, 2-3 parts of drier, 2-4 parts of light stabilizer, indium chloride package Covering 5-15 parts of nano-carbon fiber, 0.5-2 parts of wetting agent and 0.1-1 part of o-benzoylsulfonimide; The preparation method comprises the following steps: Step 1: fully stir 50-60 parts of resin, 5-15 parts of indium chloride-coated carbon nanofibers, 0.5-2 parts of wetting agent, 3-5 parts of dispersant and 5-7 parts of fumed silica; Step 2: On the basis of the mixed system obtained in step 1, add 2-3 parts of leveling agent, 2-3 parts of drier, 0.1-1 part of o-benzoylsulfonimide and 2-4 parts of The light stabilizer is fully stirred until it is completely uniformly dispersed, and after standing for defoaming, a wind power tower topcoat containing indium chloride-coated carbon nanofibers is obtained; The resin is polyurethane resin, the dispersant is acrylate, the leveling agent is fluorine-modified acrylate, the drier is organic tin drier T-12, and the light stabilizer is aniline oxalic acid light absorber and hindered amine light stabilizer The wetting agent is dibutyl phthalate or sodium dodecyl diphenyl ether disulfonate; the nanometer carbon fiber coated with indium chloride has a diameter of 100-700nm and a length of 10-30μm. 2. the wind power tower topcoat containing indium chloride coating nano-carbon fiber as claimed in claim 1, is characterized in that, in light stabilizer, the mass ratio of aniline oxalic acid light absorber and hindered amine light stabilizer is 1:1. 3. the wind power tower topcoat containing indium chloride coating nano-carbon fiber as claimed in claim 1, is characterized in that, indium chloride coating nano-carbon fiber is that indium chloride is coated on nano-carbon fiber by physical vapor deposition And made. 4. A preparation method for a wind power tower topcoat containing indium chloride-coated carbon nanofibers as claimed in any one of claims 1 to 3, characterized in that it comprises the following steps: Step 1: fully stir 50-60 parts of resin, 5-15 parts of indium chloride-coated carbon nanofibers, 0.5-2 parts of wetting agent, 3-5 parts of dispersant and 5-7 parts of fumed silica; Step 2: On the basis of the mixed system obtained in step 1, add 2-3 parts of leveling agent, 2-3 parts of drier, 0.1-1 part of o-benzoylsulfonimide and 2-4 parts of The light stabilizer is fully stirred until it is completely uniformly dispersed, and after standing for defoaming, a wind power tower topcoat containing indium chloride-coated carbon nanofibers is obtained; The above-mentioned dosage parts are all parts by mass. 5. The preparation method of the wind power tower topcoat containing indium chloride coated nano-carbon fiber as claimed in claim 4, characterized in that, in step 1, the stirring speed is 550-600rpm, and the time is 20-35min. 6. The preparation method of the wind power tower topcoat containing indium chloride coated nano-carbon fiber as claimed in claim 4, is characterized in that, in step 2, the speed of stirring is 550-600rpm, after all components are added, Stirring was continued for 10-25 minutes. 7. The method for using the wind power tower topcoat containing indium chloride coated nano-carbon fibers obtained by the preparation method according to any one of claims 4 to 6, characterized in that the obtained indium chloride coated When using the nano-carbon fiber wind power tower topcoat, add 30-40 parts of polyether polyol as a curing agent, mix well, add diluent to adjust to the required viscosity, and evenly coat the workpiece by spraying, roller coating or brushing surface. 8 . The method for using the wind power tower topcoat containing indium chloride coated nano-carbon fibers according to claim 7 , wherein the dry film thickness of the topcoat after coating is 100-150 μm.