CN115838491A - Double-layer composite film type antifouling and anti-drag material and preparation method thereof - Google Patents
Double-layer composite film type antifouling and anti-drag material and preparation method thereof Download PDFInfo
- Publication number
- CN115838491A CN115838491A CN202211579369.3A CN202211579369A CN115838491A CN 115838491 A CN115838491 A CN 115838491A CN 202211579369 A CN202211579369 A CN 202211579369A CN 115838491 A CN115838491 A CN 115838491A
- Authority
- CN
- China
- Prior art keywords
- layer
- double
- composite film
- drag
- film type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Landscapes
- Laminated Bodies (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to the technical field of marine antifouling and drag reduction materials, and particularly relates to a double-layer composite film type antifouling and drag reduction material and a preparation method thereof, wherein the surface of the material is provided with an array-arranged imprinting structure: the square pit is prepared by stamping low-surface-energy hydrophobic and gas-philic photocuring resin, the preparation process comprises bottom layer conveying, surface layer coating, surface layer stamping and surface layer photocuring, and by utilizing the hydrophobic and gas-philic and semi-closed space effects of the square pit structure, the retained gas forms a stable liquid-gas interface, and the liquid-gas interface friction of most areas on the surface is converted into the liquid-gas interface friction, so that the friction resistance between water flow and the surface of a moving solid is reduced, the resistance reduction performance is improved, and meanwhile, fouling organisms cannot directly contact the surface of the solid, so that fixation points are lost, and the organism adhesion is reduced; the material structure is simple, the preparation method is simple and convenient, meanwhile, large-area preparation can be carried out, and the anti-fouling and anti-drag material can be used for the outer surface of shells of ocean ships, underwater vehicles and the like, and has the anti-fouling and anti-drag effects.
Description
The technical field is as follows:
the invention belongs to the technical field of marine antifouling and drag reducing materials, and particularly relates to a double-layer composite film type antifouling and drag reducing material and a preparation method thereof.
Background art:
the ship inevitably faces the problems of marine biofouling and underwater frictional resistance when sailing in the marine environment, and the antifouling and drag reduction technology on the surface of the ship body is an important measure for reducing the harm of biofouling, reducing the underwater frictional resistance and saving the fuel consumption. The development of materials with hydrophobic and hydrophilic surfaces and microstructures is one of the important technical ways for preventing and reducing pollution of ship bodies.
The Chinese patent 202111224860.X discloses a preparation method of a super-hydrophobic antifouling resistance-reducing material, which comprises the following process steps: firstly, preparing a bionic claw-shaped structural matrix by taking a high molecular substance as a raw material, then processing the bionic claw-shaped structural matrix by a method combining chemical plating and electrodeposition to metalize the surface of the bionic claw-shaped structural matrix and prepare a multi-level and multi-scale millimeter-micron-nanometer multi-level structure on the bionic claw-shaped structural matrix, and finally modifying the bionic claw-shaped structural matrix by a long-chain alkanoic acid soaking method to have a hydrophobic characteristic to obtain a super-hydrophobic antifouling anti-drag material; wherein, the multi-level multi-scale millimeter-micron-nanometer multi-level structure and the hydrophobic property of the long-chain alkanoic acid jointly act to realize the super-hydrophobic property of the super-hydrophobic anti-fouling and anti-drag material and achieve the purposes of anti-fouling and drag-drag reduction; the super-hydrophobic material is a super-hydrophobic material imitating a duckweed leaf surface structure, and is prepared by carrying out hydrophobic modification on a millimeter-micron-nanometer multi-level multi-scale structure constructed by surface coating treatment. Chinese patent 202011275199.0 discloses a bionic array structure surface antifouling and resistance-reducing material, the main body structure comprises an antifouling and resistance-reducing unit consisting of a head ring and a support, the head ring is arranged above the support; it utilizes an arrayed structure for antifouling and drag reduction. Chinese patent 201710733098.5 discloses a self-repairing super-hydrophobic drag-reducing elastomer film, which comprises an elastomer, solid particles dispersed in the elastomer and a polyacrylamide-polyfluoroalkyl acrylate block copolymer grafted on the solid particles; the surface of the elastomer is provided with a shark skin surface groove structure; the polyacrylamide-polyfluoroalkyl acrylate segmented copolymer forms a lotus leaf-like surface micro-nano structure on the surface of the elastomer; the elastomer with a sharkskin surface groove structure is prepared by utilizing a polydimethylsiloxane elastomer or a polyurethane elastomer, and a lotus leaf-like surface micro-nano structure is formed on the surface of the elastomer by utilizing a polyacrylamide-polyfluoroalkyl acrylate block copolymer.
The materials involved in the above patents all belong to structural antifouling and drag reduction materials, and the structural characteristics are that basic structural units are protruded on the surface of the material to form villus or jungle-shaped or groove-shaped protrusions, when the materials are placed in water flow, the water flow passes through the protrusion structures, and the structures are utilized to play roles of antifouling and drag reduction on the flow regulation of boundary layer fluid. When the projection structure is made of hydrophobic material, an air layer can be formed under water, but because the projection structure does not have the blocking effect of a semi-closed or closed space, air is easy to run off, and the problem of short residence time of the air layer is caused. If a semi-closed or closed space is added on the basis of the array structure to form a stable air layer, and a certain proportion of the surface is converted from a liquid-solid interface to a liquid-gas interface, the water flow friction resistance is greatly reduced, and the drag reduction and antifouling effects are further enhanced. Therefore, a surface array structure material capable of stably retaining gas is developed and designed to prevent fouling and reduce drag, and has positive social and economic benefits.
The invention content is as follows:
the invention aims to overcome the defects in the prior art, and develops a double-layer composite film type antifouling and resistance-reducing material and a preparation method thereof, so that fouling organisms cannot directly contact the solid surface and cannot be attached to produce fouling while the resistance-reducing performance is improved.
In order to achieve the purpose, the main body structure of the double-layer composite film type antifouling and drag reduction material comprises a bottom layer and a surface layer arranged on the bottom layer; the surface layer is provided with a plurality of inwards sunken square pits which are arranged in an array manner.
The thickness of the bottom layer related by the invention is 30-300 microns, and the material comprises polyethylene terephthalate (PET), polyethylene (PE), polyurethane (PU), polypropylene (PP), polyacrylic Acid (PA) and Epoxy Resin (ER); the thickness of the surface layer is 20-300 microns, and the material is low surface energy hydrophobic and hydrophilic light-cured resin comprising organic silicon, fluorine polymer and fluorine-silicon copolymer; the side length a of the square pits is 50-300 microns, the depth h is 10-200 microns, and the distance b between the square pits 3 is 20-200 microns.
The specific technological process of the preparation method of the double-layer composite film type antifouling and drag reduction material comprises four steps of bottom layer conveying, surface layer coating, surface layer imprinting and surface layer photocuring:
(1) Bottom layer transfer
Conveying the bottom layer at a speed of 0.5-50 m/min;
(2) Surface coating
Mixing the UV adhesive A and the UV adhesive B according to a set proportion to obtain UV light-cured resin, stirring for 10 minutes, and coating the UV light-cured resin on the bottom layer by the coating amount of 10-300 g/square meter to form a surface layer;
(3) Surface embossing
Stamping square pits on the surface layer through rollers with the diameters of 20-500mm and a plurality of square columns arranged on the surface in an array manner;
the convex square columns on the roller are processed by methods such as precision machining or laser processing, the side length a of each square column is 50-300 microns, the height h of each square column is 10-200 microns, and the distance b between the square columns is 20-100 microns;
(4) Surface photocuring
Carrying out photocuring on the surface layer and the square pits by adopting an ultraviolet curing high-pressure mercury lamp with the wavelength of 365 nm;
wherein, the transmission speed of the bottom layer is lower than the coating and photocuring speeds of the surface layer so as to ensure complete structure and complete curing.
Compared with the prior art, the surface of the water-based anti-fouling solid-gas interface has the square pit structures arranged in an array manner, and by utilizing the hydrophobic and gas-hydrophilic action and the semi-closed space action of the square pit structures, gas is retained to form a stable liquid-gas interface, and the liquid-solid interface friction of most areas on the surface is converted into the liquid-gas interface friction, so that the frictional resistance between water flow and the advancing solid surface is reduced, the anti-drag performance is improved, fouling organisms cannot directly contact the solid surface, the fixation points are lost, and the organism adhesion is reduced; the double-layer composite film material with the hydrophobic structure on the surface, which is prepared in a large area by the imprinting of the low-surface-energy resin photocuring roller shaft, has the functions of preventing fouling and reducing drag, can reduce biofouling and frictional resistance on the surface of a ship hull, and has potential application prospect.
Description of the drawings:
FIG. 1 is a schematic diagram of the main structure of a double-layer composite film type anti-fouling and drag-reducing material according to the present invention.
FIG. 2 is a schematic diagram of the process principle of the preparation method of the double-layer composite film type antifouling and drag reducing material related to the present invention.
Fig. 3 is a real figure of the double-layer composite film type anti-fouling and anti-drag material prepared in example 2 of the invention.
FIG. 4 is a comparison chart of the antifouling performance test results of the double-layer composite film type antifouling and drag reducing material according to the invention.
FIG. 5 is a comparison chart of the drag reduction performance test results of the double-layer composite film type anti-fouling and drag-reducing material according to the invention.
The specific implementation mode is as follows:
the invention is further described below by way of an embodiment example in conjunction with the accompanying drawings.
Example 1:
the main structure of the double-layer composite film type antifouling and drag reducing material related to the embodiment is shown in fig. 1, and comprises a bottom layer 1, a surface layer 2 and square pits 3, wherein the bottom layer 1 is provided with the surface layer 2, and the surface layer 2 is provided with a plurality of square pits 3 arranged in an array manner; the thickness of the bottom layer 1 is 70 microns, and the material is polyethylene terephthalate (PET); the thickness of the surface layer 2 is 50 microns, and the material is organic light-cured resin; the side length a of the square pits 3 is 240 micrometers, the depth h is 40 micrometers, and the interval b between the square pits 3 is 80 micrometers.
Example 2:
the specific process of the preparation method of the double-layer composite film type anti-fouling and drag-reducing material related to the embodiment is shown in fig. 2:
conveying the bottom layer 1 made of PET resin at the speed of 2 m/min;
mixing the agent A UV glue and the agent B UV glue according to the ratio of 4:1, stirring for 10 minutes, and coating the mixture on the bottom layer 1 by a coating weight of 50 g/square meter to form a surface layer 2;
stamping square pits 3 on the surface layer 2 through rollers with the diameters of 100mm and a plurality of square columns arranged on the surface in an array manner, wherein the convex square columns on the rollers are processed by a precision machining method, the side length a of the square columns is 240 micrometers, the height h of the square columns is 40 micrometers, and the distance b between the square columns is 80 micrometers;
and (3) carrying out photocuring on the surface layer 2 and the square pit 3 by adopting an ultraviolet curing high-pressure mercury lamp with the wavelength of 365nm to obtain the double-layer composite film type antifouling and drag-reducing material shown in the figure 3.
Example 3:
the antifouling performance test process of the double-layer composite film type antifouling and drag reducing material related to the embodiment is as follows:
the anti-fouling paint is fixed on the surface of a steel plate coated with anti-fouling paint, and according to an anti-fouling paint sample plate shallow sea immersion test method specified in GB/T5370-2007, a solid sea hanging plate is carried out in the Qingdao sea area, and after a biological vigorous season, the result is shown in figure 4, a large number of fouling organisms such as barnacles and the like are attached to the surface of a blank control group, only a small number of barnacles are attached to the surface of an imprinting structure of a double-layer composite film type anti-fouling drag reduction material test group, and the anti-fouling effect is remarkable.
Example 3:
the drag reduction performance test process of the double-layer composite film type antifouling and drag reduction material related to the embodiment is as follows:
the anti-fouling paint is fixed on the surface of a steel plate coated with anti-fouling paint, and according to an anti-fouling paint sample plate shallow sea immersion test method specified in GB/T5370-2007, a solid sea hanging plate is carried out in the Qingdao sea area, and after a biological vigorous season, the result is shown in figure 4, a large number of fouling organisms such as barnacles and the like are attached to the surface of a blank control group, only a small number of barnacles are attached to the surface of an imprinting structure of a double-layer composite film type anti-fouling drag reduction material test group, and the anti-fouling effect is remarkable.
The test piece is installed on a drag reduction test device, and the rotating torque is tested by referring to the antifouling paint drag reduction performance test method specified in GB/T7791-2014, so that the surface drag reduction rate of the imprinting structure of the double-layer composite film type antifouling drag reduction material test group is 21.09% relative to the blank control group under the condition that the rotating speed is 450rpm (relative flow rate is 9 m/s), and the drag reduction effect is obvious, as shown in FIG. 5.
Claims (10)
1. A double-layer composite film type antifouling and drag reduction material comprises a main body structure, a base layer and a surface layer arranged on the base layer; the surface layer is provided with a plurality of inwards sunken square pits which are arranged in an array manner.
2. The double-layer composite film type antifouling and drag reducing material as claimed in claim 1, wherein the thickness of the bottom layer is 30-300 μm, and the material comprises polyethylene terephthalate, polyethylene, polyurethane, polypropylene, polyacrylic acid, and epoxy resin.
3. The double-layer composite film type antifouling and drag reducing material as claimed in claim 1 or 2, wherein the surface layer has a thickness of 20-300 μm and is made of low surface energy hydrophobic and hydrophilic photocurable resin comprising organosilicon, fluoropolymer and fluorosilicone copolymer.
4. The double-layer composite film type anti-fouling and drag-reducing material as claimed in claim 3, wherein the side length of the square pits is 50-300 microns, the depth is 10-200 microns, and the spacing between the square pits is 20-200 microns.
5. The double-layer composite film type antifouling and drag reducing material as claimed in claim 3, wherein the preparation method comprises four steps of bottom layer conveying, surface layer coating, surface layer embossing and surface layer photocuring, and is characterized in that,
(1) Bottom layer conveying: conveying the bottom layer at a speed of 0.5-50 m/min;
(2) Coating the surface layer: mixing the UV adhesive A and the UV adhesive B to obtain UV light-cured resin, stirring for 10 minutes, and coating the UV light-cured resin on the bottom layer to form a surface layer;
(3) Surface layer imprinting: impressing square pits on the surface layer through a roller;
(4) And (3) surface layer photocuring: and (4) carrying out light curing on the surface layer and the square pits.
6. The double-layer composite film type antifouling and drag reducing material as claimed in claim 5, wherein the ratio of the agent A UV glue to the agent B UV glue is 4:1; the coating weight of the UV light-cured resin is 10-300 g/m.
7. The double-layer composite film type anti-fouling and drag-reducing material as claimed in claim 5, wherein the diameter of the roller is 20-500mm, and a plurality of raised square columns are arranged on the surface in an array manner.
8. The double-layer composite film type antifouling and drag reducing material as claimed in claim 5, wherein UV-curing high-pressure mercury with 365nm wavelength is used for photocuring.
9. The double-layer composite film type antifouling and drag reducing material as claimed in claim 5, wherein the transfer speed of the bottom layer is lower than the coating and photocuring speed of the surface layer.
10. The double-layer composite film type anti-fouling and drag-reducing material as claimed in claim 7, wherein the square columns are manufactured by a precision machining or laser processing method, the side length of the square columns is 50-300 microns, the height of the square columns is 10-200 microns, and the space between the square columns is 20-100 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211579369.3A CN115838491A (en) | 2022-12-08 | 2022-12-08 | Double-layer composite film type antifouling and anti-drag material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211579369.3A CN115838491A (en) | 2022-12-08 | 2022-12-08 | Double-layer composite film type antifouling and anti-drag material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115838491A true CN115838491A (en) | 2023-03-24 |
Family
ID=85578360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211579369.3A Pending CN115838491A (en) | 2022-12-08 | 2022-12-08 | Double-layer composite film type antifouling and anti-drag material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115838491A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116120750A (en) * | 2023-04-04 | 2023-05-16 | 中国海洋大学 | Composite elastomer integrating resistance and killing, preparation method and antifouling application |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060251859A1 (en) * | 2005-05-05 | 2006-11-09 | D Urso Brian R | Friction drag-reducing surface |
| CN102918093A (en) * | 2010-04-28 | 2013-02-06 | 3M创新有限公司 | Silicone-based material |
| CN104228054A (en) * | 2014-07-23 | 2014-12-24 | 大连理工大学 | Large-area replication method of resistance-reducing micro grooves of bionic shark skin |
| JP2017110468A (en) * | 2015-12-18 | 2017-06-22 | パナソニックＩｐマネジメント株式会社 | Structural body for bath room |
| CN112756233A (en) * | 2020-12-14 | 2021-05-07 | 中国船舶重工集团公司第七二五研究所 | Method for preparing large-size micro-groove bionic anti-fouling coating by template imprinting method |
-
2022
- 2022-12-08 CN CN202211579369.3A patent/CN115838491A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060251859A1 (en) * | 2005-05-05 | 2006-11-09 | D Urso Brian R | Friction drag-reducing surface |
| CN102918093A (en) * | 2010-04-28 | 2013-02-06 | 3M创新有限公司 | Silicone-based material |
| CN104228054A (en) * | 2014-07-23 | 2014-12-24 | 大连理工大学 | Large-area replication method of resistance-reducing micro grooves of bionic shark skin |
| JP2017110468A (en) * | 2015-12-18 | 2017-06-22 | パナソニックＩｐマネジメント株式会社 | Structural body for bath room |
| CN112756233A (en) * | 2020-12-14 | 2021-05-07 | 中国船舶重工集团公司第七二五研究所 | Method for preparing large-size micro-groove bionic anti-fouling coating by template imprinting method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116120750A (en) * | 2023-04-04 | 2023-05-16 | 中国海洋大学 | Composite elastomer integrating resistance and killing, preparation method and antifouling application |
| CN116120750B (en) * | 2023-04-04 | 2023-10-27 | 中国海洋大学 | Composite elastomer integrating resistance and killing, preparation method and antifouling application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2014237168B2 (en) | Strippable film assembly and coating for drag reduction | |
| CN115838491A (en) | Double-layer composite film type antifouling and anti-drag material and preparation method thereof | |
| Bai et al. | Study on biomimetic preparation of shell surface microstructure for ship antifouling | |
| CN112300618B (en) | Bionic array structure surface antifouling and resistance-reducing material | |
| JPH0717476A (en) | Method for forming air film on submerged surface of structure having submerged part and film structure on submerged surface | |
| Chen et al. | Bio‐inspired drag reduction surface from sharkskin | |
| Yang et al. | Construction of robust slippery lubricant-infused epoxy-nanocomposite coatings for marine antifouling application | |
| CN103952078B (en) | A kind of bi-component drag-reducing coating compositions being applicable to marine environment | |
| Kim et al. | A metallic anti-biofouling surface with a hierarchical topography containing nanostructures on curved micro-riblets | |
| Yan et al. | Slime‐Groove Drag Reduction Characteristics and Mechanism of Marine Biomimetic Surface | |
| KR102630623B1 (en) | Coatings for long-term flow control around marine objects | |
| Fenati et al. | Antifouling Properties of Liquid‐Infused Riblets Fabricated by Direct Contactless Microfabrication | |
| KR20160063869A (en) | Metallic fractal topographies for reducing drag and bio-adhesion | |
| Zhu et al. | A review of recent advances in the effects of surface and interface properties on marine propellers | |
| Bilinsky et al. | Materials and Performance Testing of DCM Drag-Reducing Riblets for Aviation | |
| Gesser et al. | A drag-reducing water insoluble hydrophilic marine coating | |
| CN113956521B (en) | Preparation method of super-hydrophobic antifouling anti-drag material | |
| Ervan et al. | Fabrication of superhydrophilic TEOS-lactic acid composite films and investigation of biofouling behaviour | |
| Krishnan et al. | Superhydrophobic resistance to dynamic freshwater biofouling inception | |
| CN116731586B (en) | Multifunctional bionic structure surface and preparation method thereof | |
| CN116082895B (en) | Flexible fiber array coating and preparation method and application thereof | |
| Do Park et al. | Super-slippery silicone-based gel coating with a regenerative oil layer for long-term prevention of surface contamination | |
| Sin et al. | Multifunctional Oil‐Entangled Matrix Spray for Maritime Sustainability | |
| CN116716008A (en) | Antifouling paint, preparation method and use method thereof and application of antifouling paint | |
| Pencheva | Effectiveness of Slippery Liquid Infused Porous Surface in Viscous Drag Reduction in Boundary Layers at Varying Reynolds Numbers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |