CN111633882A - Method for constructing grid-shaped microstructure on surface of FEVE fluorocarbon resin - Google Patents
Method for constructing grid-shaped microstructure on surface of FEVE fluorocarbon resin Download PDFInfo
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- CN111633882A CN111633882A CN202010498987.XA CN202010498987A CN111633882A CN 111633882 A CN111633882 A CN 111633882A CN 202010498987 A CN202010498987 A CN 202010498987A CN 111633882 A CN111633882 A CN 111633882A
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- mold
- microstructure
- grid
- latticed
- fluorocarbon resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to a method for constructing a grid-shaped microstructure on the surface of FEVE fluorocarbon resin, which comprises the steps of preparing a single-layer grid-shaped mould by adopting a 3D printing mode, soaking in a mixed aqueous solution of diethylene glycol diacrylate (PDDA) and NaCl for 5-30 minutes, then completely soaking in a nano polytetrafluoroethylene Particle (PTFE) solution, soaking for 5-60 minutes to perform PTFE nano particle self-assembly, washing with ultrapure water, fully drying in a vacuum drying box at 50-80 ℃, impressing the dried grid-shaped mould on the surface of FEVE fluorocarbon resin after spraying, and removing the grid-shaped mould after drying under pressure for 16-18 hours to obtain the surface of the grid-shaped microstructure. The invention has the advantages of rapid forming, designable appearance of the latticed microstructure, wide application range and the like. The static contact angle of the surface of the prepared latticed microstructure with water at room temperature can reach more than 155 degrees.
Description
Technical Field
The invention belongs to the field of FEVE fluorocarbon resin surface microstructure preparation, and relates to a 3D printing preparation of a single-layer grid mold, a PTFE nano particle self-assembly technology of the mold surface and a cold press molding technology of a FEVE fluorocarbon resin surface microstructure, which are a method for quickly and reliably preparing the FEVE fluorocarbon resin surface grid microstructure.
Background
The construction of surface superhydrophobic microstructures has been a continuous focus of research since the 90 s of the last century. The function of the lotus leaf surface to produce sludge without dyeing is called lotus leaf effect, namely the self-cleaning function of the lotus leaf surface. Researches show that the realization of the lotus leaf effect benefits from the super-hydrophobic surface formed by the lotus leaf surface microstructure and the material, and the surface has the functions of ice prevention, snow prevention, pollution prevention, self-cleaning and the like.
The surface free energy of the surface material and the microstructure of the surface together determine the hydrophobicity of the surface of the material. Thus. The starting points for constructing superhydrophobic surfaces are two: reducing the surface free energy of the surface material and building up a hydrophobic microstructure. The self-assembly technology of nano particles is to arrange nano particles with low surface energy on the surface of a substrate in a spontaneous and dense way so as to reduce the free energy of the surface of the material. The particles are self-assembled, and simultaneously form a certain rough microstructure, so that the preparation of a super-hydrophobic surface is realized, and one of the researches on the center of gravity is also realized.
Disclosure of Invention
A method for constructing a latticed microstructure on the surface of FEVE fluorocarbon resin comprises the steps of preparing a single-layer latticed mold in a 3D printing mode, soaking the single-layer latticed mold in a mixed aqueous solution of diethylene glycol diacrylate Phthalate (PDDA) and NaCl, completely soaking the single-layer latticed mold in a nano polytetrafluoroethylene Particle (PTFE) solution, soaking the single-layer latticed mold for self-assembly of PTFE nano particles, washing the single-layer latticed mold with ultrapure water, placing the single-layer latticed mold in a vacuum drying box at the temperature of 50-80 ℃ for full drying, impressing the dried single-layer latticed mold on the surface of the FEVE fluorocarbon resin after spraying, and removing the latticed mold after drying.
The single-layer latticed mould is prepared by adopting a 3D printing forming technology, the cross section of the side edge of the single-layer latticed mould can be U-shaped, V-shaped or rectangular, the width w of the single-layer latticed mould is 5-200 mu m, the height h of the single-layer latticed mould is 5-100 mu m, the side length a of the side edge is 5-1000 mu m, the side length b of the side edge is 5-1000 mu m, and the included angle alpha (acute angle) is 15-90 degrees.
In the PDDA and NaCl mixed aqueous solution, the mass fraction of PDDA is 2.05-5.00%, the concentration of NaCl is 0.05-1mmo/L, the PDDA and the NaCl are fully mixed and stirred for 30 minutes, and then the single-layer latticed mould is soaked for 5-30 minutes.
The nano PTFE particle solution is 5-20% by mass and 50-500 nmPTE particle aqueous solution, and after ultrasonic stirring for 20 minutes, the single-layer latticed mould is soaked for 5-60 minutes.
The thickness of the surface of the FEVE fluorocarbon resin after spraying is 30-200 mu m.
The pressure drying is carried out for 16 to 18 hours, and the applied pressure is 0.01 to 0.10g/mm2And drying at room temperature.
The obtained latticed microstructure surface is composed of latticed grooves, the cross section of each groove can be U-shaped, V-shaped or rectangular, the width w of each groove is 5-200 mu m, the height h of each groove is 5-100 mu m, the side length a corresponding to the side edge of the die is 5-1000 mu m, the side length b of each groove is 5-1000 mu m, and the included angle alpha (acute angle) is 15-90 degrees.
The method for preparing the grid-shaped microstructure on the surface of the FEVE fluorocarbon resin has the advantages of simple process, reliable preparation process, high preparation speed, wide application range and the like, and has good engineering application prospect.
Drawings
FIG. 1 is a schematic diagram of a latticed microstructure of the FEVE fluorocarbon resin surface
FIG. 2 is a schematic view of a single-layer grid-like mold
Detailed Description
The FEVE fluorocarbon resin surface latticed microstructure prepared by the invention is composed of latticed grooves, the cross section of each groove can be U-shaped, V-shaped or rectangular, the width w of each groove is 5-200 mu m, the height h of each groove is 5-100 mu m, the side length a corresponding to the side edge of a die is 5-1000 mu m, the side length b of each groove is 5-1000 mu m, and the included angle alpha (acute angle) is 15-90 degrees.
The method comprises the following specific steps:
1. and spraying a primer on the surface of the substrate, wherein the primer is an epoxy primer, the spraying thickness is 50-200 mu m, and after drying for 36 hours at room temperature, the surface of the substrate is polished by abrasive paper to ensure the flatness of the surface.
And 2, spraying the FEVE fluorocarbon resin, namely uniformly mixing the commercial FEVE fluorocarbon resin finish paint according to the proportion, and uniformly spraying the commercial FEVE fluorocarbon resin finish paint onto the surface of the finish paint, wherein the thickness of the finish paint is 30-200 mu m.
3. After the FEVE fluorocarbon resin finish paint is sprayed for 0.1-5 hours, the single-layer latticed mold which finishes the self-assembly of the nano PTFE particles is impressed on the surface of the FEVE fluorocarbon resin coating, and 0.01-0.10g/mm is applied2Drying at room temperature for 16-18 hours.
4. And removing the single-layer latticed mold on the surface of the FEVE fluorocarbon resin to complete the construction of the latticed microstructure on the surface of the resin.
The proposed method for producing an underwater novel spanwise microstructured drag reducing surface is described in further detail below with reference to examples.
Example 1
Preparing a single-layer latticed mould, wherein the cross section of the side of the single-layer latticed mould is U-shaped, the width w is 15 mu m, the height h is 15 mu m, the side length a of the side is 30 mu m, the side length b is 30 mu m, the included angle α (acute angle) is 90 degrees, the single-layer latticed mould is self-assembled by PTFE particles with the size of 200nm, the spraying thickness of the epoxy primer is 70 mu m, after drying for 36 hours, the epoxy primer is polished by 800-mesh abrasive paper, the spraying thickness of the FEVE fluorocarbon resin is 100 mu m, after drying for 0.5 hour at room temperature, the single-layer latticed mould is pressed2And after drying for 17 hours at room temperature, removing the grid-shaped die, wherein the groove interface of the FEVE fluorocarbon resin surface microstructure is U-shaped, the width w is 15 micrometers, the height h is 15 micrometers, the side length a corresponding to the side edge of the die is 30 micrometers, the side length b is 30 micrometers, the included angle α (acute angle) is 90 degrees, and the static contact angle with water is 162 degrees.
Example 2
The cross section of the side of the single-layer grid-shaped die is V-shaped, the width w is 30 micrometers, the height h is 20 micrometers, the side length a of the side is 60 micrometers, the side length b is 60 micrometers, the included angle α (acute angle) is 45 degrees, the single-layer grid-shaped die is self-assembled by PTFE particles with the size of 300nm, the spraying thickness of the epoxy primer is 80 micrometers, after the single-layer grid-shaped die is dried for 36 hours, the single-layer grid-shaped die is polished by 800-mesh abrasive paper, the spraying thickness of the FEVE fluorocarbon resin is 150 micrometers, and the single-layerAfter 1 hour of drying, the single layer grid-like mold imprinting was completed. Pressurizing 0.10g/mm2And after drying for 18 hours at room temperature, removing the grid-shaped mold, wherein the groove interface of the FEVE fluorocarbon resin surface microstructure is V-shaped, the width w is 30 micrometers, the height h is 20 micrometers, the side length a corresponding to the side edge of the mold is 60 micrometers, the side length b is 60 micrometers, the included angle α (acute angle) is 45 degrees, and the static contact angle with water is 157 degrees.
Claims (7)
1. A method for constructing a latticed microstructure on the surface of FEVE fluorocarbon resin is characterized in that a single-layer latticed mold is prepared in a 3D printing mode, the single-layer latticed mold is soaked in a mixed aqueous solution of diethylene glycol diacrylate (PDDA) and NaCl, then is completely soaked in a nano polytetrafluoroethylene Particle (PTFE) solution, is soaked for PTFE nano particle self-assembly, is washed by ultrapure water, is placed in a vacuum drying box at 50-80 ℃ for full drying, the single-layer latticed mold after drying is imprinted on the surface of the FEVE fluorocarbon resin after spraying, and is removed after being dried under pressure for 16-18 hours, so that the latticed microstructure surface is obtained.
2. The method as set forth in claim 1, wherein the single-layered lattice-like mold is manufactured by a 3D printing molding technique, and the cross-sectional shape of the side of the single-layered lattice-like mold may be U-shaped, V-shaped, or rectangular, and the width w thereof is 5 to 200 μm, the height h thereof is 5 to 100 μm, the side has a side length a of 5 to 1000 μm, a side length b thereof is 5 to 1000 μm, and the included angle α (acute angle) thereof is 15 to 90 °.
3. The method according to claim 1, wherein the PDDA and NaCl mixed aqueous solution has a mass fraction of 2.05 to 5.00% and a NaCl concentration of 0.05 to 1mmo/L, and is fully mixed and stirred for 30 minutes and then soaked in the single-layer mesh-shaped mold for 5 to 30 minutes.
4. The method of claim 1, wherein the nano-PTFE particle solution is 5-20% by weight aqueous solution of 50-500nmPTFE particles, and the single-layer lattice mold is immersed for 5-60 minutes after 20 minutes of ultra-stirring.
5. The method of claim 1, wherein the thickness of the spray finished FEVE fluorocarbon resin surface is 30-200 μm.
6. The method of claim 1, wherein the pressure drying is carried out for 16 to 18 hours under a pressure of 0.01 to 0.10g/mm2And drying at room temperature.
7. The method according to claim 1, wherein the surface of the microstructure obtained in a grid form consists of grid-like grooves having a cross-sectional shape of U, V or rectangular, a width w of 5 to 200 μm, a height h of 5 to 100 μm, a side length a corresponding to the side of the mold of 5 to 1000 μm, a side length b of 5 to 1000 μm and an angle α (acute angle) of 15 to 90 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010498987.XA CN111633882A (en) | 2020-06-04 | 2020-06-04 | Method for constructing grid-shaped microstructure on surface of FEVE fluorocarbon resin |
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| CN202010498987.XA CN111633882A (en) | 2020-06-04 | 2020-06-04 | Method for constructing grid-shaped microstructure on surface of FEVE fluorocarbon resin |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114589883A (en) * | 2022-03-30 | 2022-06-07 | 深圳技术大学 | Injection mold and preparation method thereof |
| CN115851048A (en) * | 2022-11-23 | 2023-03-28 | 广东腐蚀科学与技术创新研究院 | Nano cerium oxide composite aviation coating and preparation method thereof |
| CN116078633A (en) * | 2022-11-18 | 2023-05-09 | 中国科学院金属研究所 | Anti-icing anti-corrosion super-hydrophobic coating with micro-column array structure and preparation method thereof |
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| CN104359342A (en) * | 2014-10-24 | 2015-02-18 | 华南理工大学 | Enhanced boiling microstructure on metal surface and preparation method thereof |
| CN106182770A (en) * | 2016-07-13 | 2016-12-07 | 北京工业大学 | The method that 3D printing template method prepares the hydrophobic of morphology controllable or super-hydrophobic film |
| CN108580227A (en) * | 2018-04-20 | 2018-09-28 | 清华大学 | A kind of fast preparation method of super-hydrophobic painted surface |
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2020
- 2020-06-04 CN CN202010498987.XA patent/CN111633882A/en active Pending
Patent Citations (4)
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| CN103787267A (en) * | 2012-10-29 | 2014-05-14 | 兆炜金属工业有限公司 | Making method of flat workpiece having surface microstructure |
| CN104359342A (en) * | 2014-10-24 | 2015-02-18 | 华南理工大学 | Enhanced boiling microstructure on metal surface and preparation method thereof |
| CN106182770A (en) * | 2016-07-13 | 2016-12-07 | 北京工业大学 | The method that 3D printing template method prepares the hydrophobic of morphology controllable or super-hydrophobic film |
| CN108580227A (en) * | 2018-04-20 | 2018-09-28 | 清华大学 | A kind of fast preparation method of super-hydrophobic painted surface |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114589883A (en) * | 2022-03-30 | 2022-06-07 | 深圳技术大学 | Injection mold and preparation method thereof |
| CN116078633A (en) * | 2022-11-18 | 2023-05-09 | 中国科学院金属研究所 | Anti-icing anti-corrosion super-hydrophobic coating with micro-column array structure and preparation method thereof |
| CN116078633B (en) * | 2022-11-18 | 2024-09-20 | 中国科学院金属研究所 | Anti-icing anti-corrosion super-hydrophobic coating with micro-column array structure and preparation method thereof |
| CN115851048A (en) * | 2022-11-23 | 2023-03-28 | 广东腐蚀科学与技术创新研究院 | Nano cerium oxide composite aviation coating and preparation method thereof |
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Application publication date: 20200908 |