CN114589883B - Injection mold and preparation method thereof - Google Patents
Injection mold and preparation method thereof Download PDFInfo
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- CN114589883B CN114589883B CN202210322325.6A CN202210322325A CN114589883B CN 114589883 B CN114589883 B CN 114589883B CN 202210322325 A CN202210322325 A CN 202210322325A CN 114589883 B CN114589883 B CN 114589883B
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses an injection mold and a preparation method thereof, wherein the mold comprises: the injection molding device comprises a movable mold and a fixed mold, wherein an injection molding mold cavity is formed between the fixed mold and the movable mold, and microstructures are arranged on the surface of the movable mold and/or the fixed mold and consist of a plurality of tower structures; the tower structure comprises a base and a plurality of blocks fixed on the surface of the base, wherein the blocks are arranged in a stacked mode, each layer of block faces the surface of the injection molding die cavity and is provided with a first groove, and the side length of the block gradually decreases from layer to layer in the direction of the injection molding die cavity. By controlling the size of the tower structure, the tower structure is distributed on the surface of the mold, so that the surface of the mold has a micro-structure with three scales of nano-micro-macro coexisting. By adopting the mold, a micro-nano structure can be formed on the surface of the injection molded product, so that the product has excellent hydrophobic property. Meanwhile, the problem that the multi-level micro-nano structure on the surface of an injection mold cannot be manufactured when the mold is manufactured by an additive is solved.
Description
Technical Field
The invention relates to the technical field of injection molding, in particular to an injection mold and a preparation method thereof.
Background
Injection molding techniques have been widely used in various fields to manufacture precision plastic products because of their advantages of mass production and low cost.
At present, an additive manufacturing method is adopted to manufacture an injection mold or a mold component, so that the injection mold or the mold component has the advantages of dense component quality, good forming performance, capability of being customized and the like, and the degree of freedom of product design is improved. However, the method is limited in precision, and a microstructure cannot be processed on the surface of the mold, so that the product injection-molded by using the mold has no super-hydrophobicity.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide an injection mold, which aims to solve the problem that the product injected by the existing additive manufacturing injection mold does not have super-hydrophobic performance.
The technical scheme of the invention is as follows:
an injection mold comprising: the injection molding device comprises a movable mold and a fixed mold, wherein an injection molding mold cavity is formed between the fixed mold and the movable mold, wherein a microstructure is arranged on the surface of the movable mold and/or the fixed mold, and the microstructure consists of a plurality of tower structures; the tower structure comprises a base and a plurality of blocks fixed on the surface of the base, wherein the blocks are arranged in a stacked mode, each layer of block faces the surface of the injection molding die cavity and is provided with a first groove, and the side length of the block gradually decreases from layer to layer in the direction of the injection molding die cavity.
Optionally, in the injection mold, a second groove is provided between two adjacent tower structures.
Optionally, the injection mold is used for molding a tower structure, wherein the block is a square block, the side length of the square block located at the outermost layer of the tower structure is 200 to 400 μm, and the side length decreasing amplitude of each layer of the square block is 400 to 1000 μm.
Optionally, the injection mold, wherein the thickness of the square block of the outermost layer is 40-200 μm.
Optionally, the injection mold, wherein a center distance between two adjacent tower structures is 200 to 1000 μm.
Optionally, the injection mold, wherein the first grooves are arranged in parallel on the surface of the block.
Optionally, the injection mold, wherein the tower structure comprises: the device comprises a base, a first block fixed on the surface of the base and a second block fixed on the surface of the first block; the side length of the base is larger than that of the first block body, and the first groove is arranged on the surface of the base in parallel.
Optionally, the injection mold, wherein the widths of the first and second grooves are 20-40 μm, respectively.
Optionally, the injection mold, wherein the base has a thickness that is the same as the thickness of the first block, the second block, or that decreases in a gradient in a direction toward the injection mold cavity.
A preparation method of the injection mold comprises the following steps:
carrying out three-dimensional modeling on the injection mold and carrying out layering treatment on the built three-dimensional model to obtain a sliced layer;
according to the shape and size parameters of each sliced layer, printing each sliced layer in sequence to obtain the fixed die and the movable die;
acquiring characteristic dimension parameters of a tower structure on the surface of the fixed die and/or the movable die, and adjusting femtosecond laser processing technological parameters according to the characteristic dimension parameters;
and scanning the surface of the tower structure by using the femtosecond laser, and forming a first groove on the surface of the tower structure.
The injection mold has the beneficial effects that the surface of the fixed mold and/or the movable mold of the mold is provided with the micro structure, the micro structure is composed of a plurality of tower structures, each tower structure is a multistage tower structure, the surface of each tower structure is provided with the groove, and the micro structure is arranged on the surface of the mold, so that the micro-nano structure can be formed on the surface of an injection molded product, and the product has excellent hydrophobic performance.
Drawings
FIG. 1 is a schematic structural diagram of a surface microstructure of an injection mold according to the present invention;
FIG. 2 is a schematic view of the arrangement of grooves on the surface of a tower structure provided by the present invention;
FIG. 3 is a schematic view of a tower structure provided by the present invention;
FIG. 4 is a schematic flow chart of a method for manufacturing an injection mold according to the present invention.
Detailed Description
The present invention provides an injection mold and a method for manufacturing the same, and the present invention will be described in further detail below in order to make the objects, technical solutions, and effects of the present invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a surface microstructure of an injection mold provided by the present invention, where the injection mold includes a fixed mold and a movable mold, the fixed mold and the movable mold are combined to form an injection mold cavity, a microstructure 11 is disposed on a surface of the injection mold cavity (i.e., a surface of the fixed mold and/or the movable mold), and a surface of an injection-molded product can have superhydrophobicity by disposing a microstructure on a surface of the fixed mold and/or the movable mold. It should be noted that, injection gates and other auxiliary components (not shown) are disposed on the movable mold and the fixed mold. The specific structure of the injection gate and other auxiliary components is a common technique in the art and will not be described herein.
With reference to fig. 2 and 3, specifically, the microstructure 11 is composed of a plurality of tower structures 12, the number of tower structures may be set according to a specific mold size, the microstructures 11 may be set on the fixed mold and the movable mold separately or simultaneously, when the microstructures 11 are set on the surfaces of the fixed mold and the movable mold, the two microstructures 11 have the same shape, and the microstructures 11 having the same structure are set on the movable mold and the fixed mold, so that the surfaces of the injection-molded products have the same hydrophobic property. It is easy to understand that the shape of the microstructure 11 on the surface of the fixed mold or the movable mold can be adjusted according to the actual product requirements, and the surfaces with different hydrophobic properties can be prepared on the same product.
The tower structure 12 is formed by stacking a plurality of blocks 120 with side lengths changing in a gradient manner, illustratively, the blocks 120 are square blocks (such as cuboids and cubes), the tower structure is formed by stacking three layers of square blocks 120, that is, the tower structure is a three-level tower structure, the bottom layer is a base 121, a first square block 122 and a second square block 123 are sequentially stacked on the surface of the base 121, and the side lengths of the base 121, the first square block 122 and the second square block 123 are gradually decreased. Wherein the side length of the second square block 123 may be 200 μm to 250 μm,250 μm to 300 μm,300 μm to 350 μm,350 μm to 400 μm.
The first square block 122 may have an edge length of 600 to 650 μm,650 to 700 μm,700 to 750 μm,750 to 800 μm; or 900 μm to 950 μm,950 μm to 1000 μm,1000 μm to 1050 μm,1050 μm to 1100 μm, or 1200 μm to 1250 μm,1250 μm to 1300 μm,1300 μm to 1350 μm,1350 μm to 1400 μm.
The side length of the base 121 may be 1000 μm to 1050 μm,1050 μm to 1100 μm,1100 μm to 1150 μm,1150 μm to 1200 μm; or 1600 μm to 1650 μm,1650 μm to 1700 μm,1700 μm to 1750 μm,1750 μm to 1800 μm, or 2200 μm to 2250 μm,2250 μm to 2300 μm,2300 μm to 2350 μm,2350 μm to 2400 μm.
In this embodiment, the thicknesses of the square blocks constituting the tower structure may be the same, that is, the thicknesses of the square blocks in each layer are the same, or may be gradually increased or decreased from the outer layer to the inner layer, and for example, the thicknesses of each layer are in an arithmetic progression or an geometric progression.
Illustratively, the tower structure is a three-stage tower structure, the thickness of the square block at the top of the tower (third stage) is 40 μm to 50 μm,50 μm to 80 μm,80 μm to 120 μm,120 μm to 150 μm,150 μm to 170 μm,170 μm to 200 μm; the thickness of the square block of the middle layer (second stage) is 50 μm to 60 μm,60 μm to 90 μm,90 μm to 130 μm,130 μm to 160 μm,160 μm to 180 μm,180 μm to 210 μm; or 80 μm to 90 μm,90 μm to 120 μm,120 μm to 160 μm,160 μm to 190 μm,190 μm to 210 μm,210 μm to 250 μm; the thickness of the bottom (first stage) square block is 60 μm to 70 μm,70 μm to 100 μm,100 μm to 140 μm,140 μm to 170 μm,170 μm to 190 μm,190 μm to 220 μm; or 120 μm to 130 μm,130 μm to 160 μm,160 μm to 200 μm,200 μm to 240 μm,240 μm to 250 μm,250 μm to 290 μm.
The micro-structure can have a multi-level structure by adjusting the sizes of different levels of the tower structure, namely, the micro-structure, the nano-structure and the macro-structure are simultaneously arranged, and the hydrophobic design requirement is met.
In one implementation manner of this embodiment, a first trench 130 is disposed on a surface of the tower structure, and the first trench 130 is disposed in parallel on the surface of the tower structure, wherein a width of the first trench may be 20 μm to 30 μm, and 30 μm to 40 μm. The depth of the first trench may be 20 to 30 μm,30 to 40 μm,40 to 50 μm,50 to 60 μm,60 to 70 μm,70 to 80 μm,80 to 90 μm,90 to 100 μm. Illustratively, as shown in fig. 3, the tower structure is a three-stage tower structure, the surface facing the injection mold cavity is provided with first grooves 130, the first grooves 130 on each layer are arranged in parallel, and by arranging the first grooves in parallel on the surface of the tower structure, the surface of the obtained injection molded product can have a uniform groove arrangement during injection molding, so as to obtain a product surface with uniform hydrophobicity.
In this embodiment, a second trench 140 is disposed between two adjacent tower structures, wherein the width of the second trench may be 20 μm to 30 μm, and 30 μm to 40 μm. The depth of the second trench may be 20 to 30 μm,30 to 40 μm,40 to 50 μm,50 to 60 μm,60 to 70 μm,70 to 80 μm,80 to 90 μm,90 to 100 μm. When the two second grooves intersect, the two second grooves are arranged perpendicular to each other. That is, it can be understood that a plurality of second grooves which are vertically intersected are arranged on the inner surface of the fixed die or the movable die, the second grooves divide the surface of the fixed die and/or the movable die into a plurality of square small areas, and the tower structure is arranged in the corresponding small areas. The spacing between two adjacent tower structures is 200 μm to 250 μm,250 μm to 300 μm,300 μm to 350 μm,350 μm to 400 μm,400 μm to 450 μm,450 μm to 500 μm,500 μm to 550 μm,550 μm to 600 μm,600 μm to 650 μm,650 μm to 700 μm,700 μm to 750 μm,750 μm to 800 μm,800 μm to 850 μm,850 μm to 900 μm,900 μm to 950 μm,950 μm to 1000 μm. It is easy to understand that the form of the microstructure can be adjusted to meet different design requirements by adjusting the distance between two adjacent tower structures according to actual design requirements.
In the embodiment, the microstructure is formed by adopting a tower structure with multiple levels, the groove is arranged between the surface of the tower structure and the tower structure, and the width of the groove and the side length of the square block are controlled, so that the mold has a multi-level structure surface with nanometer level, micron level and macroscopic level, and a product injection molded by the mold has super-hydrophobic performance.
Referring to fig. 4, based on the same inventive concept, the present invention further provides a method for manufacturing an injection mold, the method comprising the steps of:
and S10, carrying out three-dimensional modeling on the injection mold and carrying out layering treatment on the built three-dimensional model to obtain a sliced layer.
Specifically, a CAD three-dimensional model of an injection mold requiring 3D printing is constructed, the CAD three-dimensional model is converted into an STL (stereo lithography, abbreviation for stereolithography) format file, and then the injection mold after modeling is sliced to obtain a sliced layer.
And S20, respectively printing each sliced layer in sequence according to the shape and size parameters of each sliced layer to obtain the fixed die and the movable die.
Specifically, the shape and size parameters of the resulting sliced layer are input into the additive manufacturing apparatus. Selecting die steel powder with the grain diameter of 15-53 mu m as an original material for additive manufacturing, carrying out parameter setting according to additive manufacturing process parameters (such as laser power of 200W, layer thickness of 40 mu m, scanning speed of 800mm/s and scanning distance of 60 mu m) preset in additive manufacturing equipment, and then integrally forming the injection die with the macro microstructure surface.
And the step S30 is included after the step S20, the characteristic dimension parameters of the tower-type structure on the surface of the fixed die and/or the movable die are obtained, and the femtosecond laser processing technological parameters are adjusted according to the characteristic dimension parameters.
Specifically, the surface of the injection mold is observed by a confocal laser microscope, and characteristic dimension parameters (such as height, width, tower structure pitch, and the like) of the surface microstructure are acquired. Presetting and optimizing femtosecond laser processing parameters (such as laser power of 10W, scanning speed of 100mm/s, scanning interval adjusting range of 0.04-0.08mm, and scanning frequency adjusting range of 1-25 times).
And step S40, after the step S30, scanning the surface of the tower structure with the femtosecond laser to form a first trench on the surface of the tower structure.
Specifically, femtosecond laser scanning is carried out on the surface of the macro microstructure of the mold, and based on the extremely high instantaneous power and the extremely short pulse width of the femtosecond laser, the superficial layer material of the mold is gasified and removed under the condition that a heat affected zone is not generated as much as possible, and a micron-sized groove structure is formed while partial surface defects are removed;
in the scanning process of the femtosecond laser, the femtosecond laser can be coupled with surface plasmon polariton to form periodic light field distribution, so that a nano/submicron structure with the size of hundreds of nanometers is induced, the nano/micron structure is endowed to the surface of the mold, and finally a nano-micro-macro three-scale coexisting mold surface microstructure is formed.
And further, measuring and representing the surface of the mold after femtosecond laser treatment by using a laser confocal microscope to obtain a surface roughness value and evaluate the size change of the microstructure.
Assembling the prepared movable mold and fixed mold (the surfaces of which are provided with microstructures) on a precision injection molding machine, and adding high-molecular raw materials (including but not limited to polyethylene, polypropylene, polystyrene, polymethyl methacrylate, polycarbonate, polyvinylidene fluoride, cyclic olefin copolymer or polyurethane and other materials) for injection molding to obtain a plastic product with a multilayer microstructure on the surface; and measuring the contact angle of the surface by using a contact angle tester, verifying whether the required super-hydrophobic function (the contact angle is more than 150 ℃) is achieved, and meeting the design requirement through verification.
In summary, the present invention provides an injection mold and a method for manufacturing the same, including: the injection molding die cavity is formed between the fixed die and the movable die, the surface of the movable die and/or the fixed die is provided with a microstructure, the microstructure is formed by combining a plurality of tower structures, the tower structures are multi-stage tower structures, grooves are formed in the surfaces of the multi-stage tower structures, each stage of tower structure is formed by a square block, the side length and the height of the square block of each stage of tower structure are in gradient change, and the grooves are formed between two adjacent tower structures. By controlling the size of the tower structure, the distribution of the tower structure on the surface of the mold enables the surface of the mold to have a micro structure with three scales of nano-micro-macro.
Based on the same inventive concept, the preparation method of the injection mold provided by the invention comprises the following steps: carrying out three-dimensional modeling on the injection mold and carrying out layering treatment on the built three-dimensional model to obtain a sliced layer; according to the shape and size parameters of each sliced layer, printing each sliced layer in sequence to obtain the fixed die and the movable die; acquiring characteristic dimension parameters of a tower structure on the surface of the fixed die and/or the movable die, and adjusting femtosecond laser processing technological parameters according to the characteristic dimension parameters; and scanning the surface of the tower structure by using the femtosecond laser to form a groove on the surface of the tower structure. Based on extremely high instantaneous power and extremely short pulse width of the femtosecond laser, under the condition that a heat affected zone is not generated as much as possible, a superficial layer material of the mold is removed through gasification, and a micron-scale groove structure is formed while partial surface defects are removed; in the scanning process of the femtosecond laser, the femtosecond laser can be coupled with surface plasmon polaritons to form periodic optical field distribution, so that a nano/submicron structure with the size of hundreds of nanometers is induced, the nano/micron structure is endowed to the surface of the mold, and finally the mold surface microstructure with the coexistence of nano-micro-macro three scales is formed.
It will be understood that the invention is not limited to the examples described above, but that modifications and variations will occur to those skilled in the art in light of the above teachings, and that all such modifications and variations are considered to be within the scope of the invention as defined by the appended claims.
Claims (6)
1. An injection mold comprising: the injection molding device comprises a movable die and a fixed die, wherein an injection molding die cavity is formed between the fixed die and the movable die, and the injection molding device is characterized in that a microstructure is arranged on the surface of the movable die and/or the fixed die, and the microstructure consists of a plurality of tower structures; the tower structure comprises a base and a plurality of blocks fixed on the surface of the base, wherein the blocks are arranged in a stacked mode, a first groove is formed in the surface, facing the injection molding cavity, of each layer of block, and the side length of each layer of block gradually decreases layer by layer along the direction facing the injection molding cavity;
the tower structure comprises: the device comprises a base, a first block fixed on the surface of the base and a second block fixed on the surface of the first block; the side length of the base is larger than that of the first block body, and the first groove is arranged on the surface of the base in parallel;
a second groove is arranged between two adjacent tower structures; the widths of the first groove and the second groove are respectively 20-40 μm;
the block body is a square block body, the side length of the square block body positioned at the outermost layer of the tower structure is 200-400 mu m, and the side length degressive amplitude of each layer of the square block body is 400-1000 mu m.
2. An injection mold according to claim 1, wherein the thickness of the square blocks of the outermost layer is 40-200 μm.
3. An injection mold according to claim 1, wherein a center distance between two adjacent tower structures is 200-1000 μm.
4. An injection mold according to claim 1, wherein the first grooves are arranged in parallel on the surface of the block.
5. An injection mold according to claim 1, wherein the base has a thickness that is the same as the thickness of the first block, the second block, or decreases from layer to layer in a direction towards the injection mold cavity.
6. A method of making an injection mold in accordance with claim 1, comprising:
carrying out three-dimensional modeling on the injection mold and carrying out layering treatment on the built three-dimensional model to obtain a sliced layer;
according to the shape and size parameters of each sliced layer, printing each sliced layer in sequence to obtain the fixed die and the movable die;
acquiring characteristic size parameters of a tower structure on the surface of the fixed die and/or the movable die, and adjusting femtosecond laser processing technological parameters according to the characteristic size parameters;
and scanning the surface of the tower structure by using the femtosecond laser, and forming a first groove on the surface of the tower structure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210322325.6A CN114589883B (en) | 2022-03-30 | 2022-03-30 | Injection mold and preparation method thereof |
| PCT/CN2022/085984 WO2023184565A1 (en) | 2022-03-30 | 2022-04-09 | Injection mold and preparation method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210322325.6A CN114589883B (en) | 2022-03-30 | 2022-03-30 | Injection mold and preparation method thereof |
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| CN114589883A CN114589883A (en) | 2022-06-07 |
| CN114589883B true CN114589883B (en) | 2022-10-28 |
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| WO (1) | WO2023184565A1 (en) |
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| CN115097557A (en) * | 2022-06-21 | 2022-09-23 | 深圳市日探科技有限公司 | Diffusion plate manufacturing method and diffusion plate |
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| US8486319B2 (en) * | 2010-05-24 | 2013-07-16 | Integran Technologies Inc. | Articles with super-hydrophobic and/or self-cleaning surfaces and method of making same |
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| CN203077543U (en) * | 2012-12-20 | 2013-07-24 | 华南理工大学 | Injection mould for preparing product with super-hydrophobic surface |
| KR101694605B1 (en) * | 2015-01-15 | 2017-01-09 | 재단법인 멀티스케일 에너지시스템 연구단 | HIERARCHIAL FINE STRUCTURES, A MOLD fOR FORMING SAME, AND A METHOD FOR MANUFACTURING THE MOLD |
| WO2017028157A1 (en) * | 2015-08-17 | 2017-02-23 | Hewlett-Packard Development Company,L.P. | Making hydrophobic surface for object |
| CN105345984A (en) * | 2015-09-25 | 2016-02-24 | 华南理工大学 | High molecular material surface with T-shaped microstructure and preparation method and application thereof |
| CN205201976U (en) * | 2015-09-25 | 2016-05-04 | 华南理工大学 | Preparation has injection mold of macromolecular material surface product of T shape micro -structure |
| CN108688134A (en) * | 2018-05-15 | 2018-10-23 | 天津大学 | A kind of method that high efficiency, low cost and no pollution prepares polymer hydrophobic surface |
| CN109159377B (en) * | 2018-10-10 | 2021-10-08 | 歌尔光学科技有限公司 | Die and processing method thereof |
| CN110125394B (en) * | 2019-04-16 | 2020-04-17 | 华南农业大学 | Method for preparing super-hydrophobic structure based on 3D printing |
| WO2021215999A1 (en) * | 2020-04-22 | 2021-10-28 | Agency For Science, Technology And Research | A method of fabricating superamphiphobic films with doubly re-entrant microstructures |
| CN111633882A (en) * | 2020-06-04 | 2020-09-08 | 清华大学 | Method for constructing grid-shaped microstructure on surface of FEVE fluorocarbon resin |
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| CN111907090A (en) * | 2020-07-30 | 2020-11-10 | 中国空气动力研究与发展中心低速空气动力研究所 | Forming method of thermosetting resin-based composite material surface anti-icing array structure |
| CN113539811B (en) * | 2021-07-06 | 2022-07-15 | 深圳技术大学 | Conductive pattern structure, preparation method thereof and patterned substrate |
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| CN107199671A (en) * | 2017-05-26 | 2017-09-26 | 中南大学 | The micro injection molding mould and its micro injection molding method of super hydrophobic surface with micro-nano compound structure |
| CN108773009A (en) * | 2018-06-15 | 2018-11-09 | 华南理工大学 | The manufacturing method of hydrophobic/sunken light fly eye lens array with micro-nano two-stage structure and its application |
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| WO2023184565A1 (en) | 2023-10-05 |
| CN114589883A (en) | 2022-06-07 |
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