CN106948014A - A kind of three-dimensional melting electrostatic Method of printing of big height micro-nano structure - Google Patents
A kind of three-dimensional melting electrostatic Method of printing of big height micro-nano structure Download PDFInfo
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- CN106948014A CN106948014A CN201710280584.6A CN201710280584A CN106948014A CN 106948014 A CN106948014 A CN 106948014A CN 201710280584 A CN201710280584 A CN 201710280584A CN 106948014 A CN106948014 A CN 106948014A
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- nano structure
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
- D01D5/0046—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion the fibre formed by coagulation, i.e. wet electro-spinning
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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
- B33Y10/00—Processes of additive manufacturing
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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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
Abstract
A kind of three-dimensional melting electrostatic Method of printing of big height micro-nano structure, the program of control platform movement is first developed on computers, select to contain conducting medium solution and melting electrostatic printed material for filling, and be respectively charged into the syringe of the melting electrostatic printing equipment containing multiple shower nozzles, then melting electrostatic print parameters are selected, the three-dimensional micro-nano structure for obtaining setting thickness is printed by melting electrostatic, conducting medium solution will be contained and be filled into three-dimensional micro-nano structure, method using temperature crosslink and chemical crosslinking makes its plastic, so that melting electrostatic printing receiving platform rise, the distance between melting printing head and receiving platform are heightened to the thickness of a colloid, so repeatedly, until the height of three-dimensional micro-nano structure reaches required height, realize that melting electrostatic prints the three-dimensional micro-nano structure of big height, the present invention overcomes the shortcoming that electric field is raised and decayed with height in conventional melt static dump technique, it can be widely applied to micro-nano device, the fields such as organizational project.
Description
Technical field
The present invention relates to minute manufacturing and increases material manufacturing technology field, and in particular to a kind of three-dimensional of big height micro-nano structure
Melting electrostatic Method of printing.
Background technology
Melting electrostatic printing is a kind of high-precision micro nanometer fiber manufacturing technology, and the technology is using polymer melt strong
Micro nanometer fiber is formed under electric field and carries out electrostatic direct write, it is real by layer upon layer with reference to the principle and method of traditional increasing material manufacturing
Existing various three-dimensional micro-nano structures.The technology is not only with fibre diameter is small, fiber homogeneity is good, can realize sub-micron, nanometer
Advantages such as yardstick, and many available for melting electrostatic printed material, including from insulating polymer to conducting polymer, from inorganic
Macromolecular material is to biomaterial, therefore the technology has wide practical use in fields such as micro-nano device, organizational projects.
But it is due to the limitation of printing technology, the technology still suffers from some in terms of big high levels of three-dimensional micro-nano structure is made and asked
Topic：Because the technology is that the deposition for realizing fiber is driven using high-pressure electrostatic, with being continuously increased for three-dimensional micro-nano structure height,
Electric-field intensity also changes therewith, and original printing technology changes so that the three-dimensional micro-nano structure limited height that can be made, maximum high
Degree is usually no more than 2mm, it is impossible to be used in build the three-dimensional micro-nano structure of larger height.
The content of the invention
In order to overcome the shortcoming of above-mentioned prior art, it is an object of the invention to provide the three of a kind of big height micro-nano structure
Melting electrostatic Method of printing is tieed up, can stablize, continuously print the three-dimensional micro-nano structure with big height, can be widely applied to
The fields such as micro-nano device, organizational project.
In order to achieve the above object, the technical scheme taken of the present invention is：
A kind of three-dimensional melting electrostatic Method of printing of big height micro-nano structure, comprises the following steps：
1) program of control mobile platform is developed on computers according to the complex pattern or threedimensional model of wanting printing；
2) solution containing conducting medium is configured, concentration of polymer solution containing conducting medium is between 1~20%；
3) melting electrostatic printed material is chosen, melting electrostatic printed material includes polycaprolactone, PLA, polypropylene, poly-
Poly lactic coglycolic acid, ethene/polyvinyl alcohol copolymer, the high polymer with polar group of nylon series polymer,
It is different according to the fusing point of material, determine the heating-up temperature of Electrothermal ring or water oil bath circulation, Electrothermal ring temperature range 40~
Between 500 DEG C, oil bath circulating temperature scope is between 40~200 DEG C, and water-bath circulating temperature scope is between 40~100 DEG C；
4) by step 2) prepare solution containing conducting medium and step 3) selection melting electrostatic printed material be respectively charged into
In the syringe of melting electrostatic printing equipment containing multiple shower nozzles, wherein solution printing head is used for step 2) in configuration contain
Conducting medium solution is printed in the way of extruding, and melting printing head is used for step 3) the melting electrostatic printed material chosen with
The mode of melting electrostatic printing is printed；
5) according to the line width of required fiber, feature sizes are between 1~100 μm, so that it is determined that the movement of mobile platform
Speed：1~300mm/s, the model for melting printing head：100~1000 μm, and high-accuracy injection pump discharge：5~
1000uL/h, melting electrostatic printing head connect on positive voltage, mobile platform receiving platform ground connection, adjustment melting printing head with
The distance between receiving platform：Between 0.5~10mm, high voltage power supply is opened, adjustment voltage is to needing amplitude：0.1~20Kv；
6) program of mobile platform will be controlled to input main frame, program controls motion platform and melting electrostatic by control module
Printing head realizes that layer upon layer obtains 0.1~2mm three-dimensional micro-nano structure；
7) after the three-dimensional micro-nano structure of single printing to be done, melting electrostatic printing head is switched to solution by program automatically
Printing head, solution printing head is by step 2) in solution containing conducting medium step 6 is filled into the way of extruding) in gained
Three-dimensional micro-nano structure in, solution packed height is slightly lower than the height of three-dimensional micro-nano structure, utilizes temperature crosslink or chemistry
The method of crosslinking makes the plastic of solution containing conducting medium, and the salting liquid containing conductive ion then without carrying out crosslinking Treatment, forms new
Receiving platform, program will melt the distance between printing head and receiving platform and heightens the thickness of a colloid automatically：0.1~
2mm；
8) according to the program of control mobile platform, automatic repeat step 6) and step 7), until the height of three-dimensional micro-nano structure
Degree reaches required height, obtains that three-dimensional micro-nano structure and dielectric be molten and composite construction of hydrogel；
9) dielectric inside the composite construction that removal step 8 is obtained by way of cleaning, change temperature or chemical reaction
Solution or hydrogel, obtain big height micro-nano structure, additionally it is possible to obtain the composite construction of big height micro-nano structure and hydrogel.
Described step 2) in solution containing conducting medium include the various salting liquids containing conductive ion, salting liquid include chlorine
Change sodium solution, calcium chloride solution, or the gel with certain electric conductivity-mix particles solution.
The gelatin and agarose, the chitosan of chemical crosslinking and sodium alginate, light that described gel includes temperature crosslink are handed over
The polyethylene glycol and gelatin of connection, or these materials mixed solution.
Beneficial effects of the present invention are：
Compared with existing melting electrostatic Method of printing, the advantage of this patent is can by the filling into three-dimensional micro-nano structure
The conducting medium solution of flowing so that conductive receiving platform is dynamically raised in print procedure, overcomes conventional melt electrostatic to beat
The shortcoming that electric field is raised and decayed with height in technique is printed, so as to realize the integration manufacture of big high levels of three-dimensional micro-nano structure.
Brief description of the drawings
Fig. 1 is embodiment step 6) obtained three-dimensional micro-nano structure.
Fig. 2 is embodiment step 7) obtained three-dimensional micro-nano structure.
Fig. 3 is embodiment step 8) obtained three-dimensional micro-nano structure and dielectric be molten and composite construction of hydrogel.
Fig. 4 is embodiment step 9) obtained three-dimensional micro-nano structure.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
A kind of three-dimensional melting electrostatic Method of printing of big height micro-nano structure, comprises the following steps：
1) program of control mobile platform is developed on computers according to the complex pattern or threedimensional model of wanting printing；
2) solution containing conducting medium is configured, after selected solution containing conducting medium is mutually mixed for gelatin and agarose
Solution, mass concentration is 5% and 1.5%；
3) it is melting electrostatic printed material to choose polycaprolactone, and the heating-up temperature for determining Electrothermal ring is：70℃；
4) by step 2) gelatin prepared and agarose mixed solution and step 3) polycaprolactone chosen is respectively charged into and contains
In the syringe of the melting electrostatic printing equipment of multiple shower nozzles, wherein solution printing head is used for step 2) lead containing for middle configuration
Dielectric solution is printed in the way of extruding, and melting printing head is used for step 3) material chosen prints with melting electrostatic
Mode is printed；
5) 8 μm of line widths as fiber are selected, so that it is determined that the translational speed of mobile platform：30mm/s, melting printing spray
The model of head：400 μm, and high-accuracy injection pump discharge：100uL/h, melting electrostatic printing head connects positive voltage, mobile platform
On receiving platform ground connection, the distance between adjustment melting printing head and receiving platform：3mm, opens high voltage power supply, adjustment electricity
Being depressed into needs amplitude：3Kv；
6) program of mobile platform will be controlled to input main frame, program controls mobile platform and melting electrostatic by control module
Printing head realizes that layer upon layer obtains three-dimensional micro-nano structure, and the printing number of plies is 100 layers, i.e., single printing micro-nano structure is highly
1mm, as shown in Figure 1；
7) after the three-dimensional micro-nano structure of single printing to be done, melting electrostatic printing head is switched to solution by program automatically
Printing head, solution printing head is by step 2) in gelatin and agarose mixed solution be filled into step 6) in gained three-dimensional
Micro-nano structure, as shown in Figure 2；Solution packed height is slightly lower than the height of three-dimensional micro-nano structure, to ensure subsequently print three
Tie up micro-nano structure and the partial 3-D micro-nano structure can fully adhesion, temperature is reduced into less than 18 DEG C makes its plastic, formation
New receiving platform, the distance between melting printing head and receiving platform is heightened the thickness of a colloid：1mm；
8) according to the program of control mobile platform, automatic repeat step 6) and step 7), until the height of three-dimensional micro-nano structure
Degree reaches required height：5mm, obtains that three-dimensional micro-nano structure and dielectric be molten and composite construction of hydrogel, as shown in Figure 3；
9) by step 8) in obtained composite construction be put into 50 DEG C of warm water and soak 2 hours, just can be by gelatin and agar
Sugar is removed, and obtains big high levels of three-dimensional micro-nano structure, the height of three-dimensional micro-nano structure is about 5mm, as shown in Figure 4.
Claims (3)
1. a kind of three-dimensional melting electrostatic Method of printing of big height micro-nano structure, it is characterised in that comprise the following steps：
1) program of control mobile platform is developed on computers according to the complex pattern or threedimensional model of wanting printing；
2) solution containing conducting medium is configured, concentration of polymer solution containing conducting medium is between 1~20%；
3) choose melting electrostatic printed material, melting electrostatic printed material include polycaprolactone, PLA, polypropylene, PLA-
Co-glycolic acid, ethene/polyvinyl alcohol copolymer, the high polymer with polar group of nylon series polymer, according to
The fusing point of material is different, determines the heating-up temperature of Electrothermal ring or water oil bath circulation, Electrothermal ring temperature range is at 40~500 DEG C
Between, oil bath circulating temperature scope is between 40~200 DEG C, and water-bath circulating temperature scope is between 40~100 DEG C；
4) by step 2) prepare solution containing conducting medium and step 3) choose melting electrostatic printed material be respectively charged into contain it is many
In the syringe of the melting electrostatic printing equipment of individual shower nozzle, wherein solution printing head is used for step 2) in configuration containing conduction
Medium solution is printed in the way of extruding, and melting printing head is used for step 3) the melting electrostatic printed material chosen to be to melt
The mode of static dump is printed；
5) according to the line width of required fiber, feature sizes are between 1~100 μm, so that it is determined that the translational speed of mobile platform：
1~300mm/s, the model for melting printing head：100~1000 μm, and high-accuracy injection pump discharge：5~1000uL/h, melts
Melt static dump shower nozzle and connect receiving platform ground connection on positive voltage, mobile platform, adjustment melting printing head and receiving platform it
Between distance：Between 0.5~10mm, high voltage power supply is opened, adjustment voltage is to needing amplitude：0.1~20Kv；
6) program of mobile platform will be controlled to input main frame, program controls motion platform and melting electrostatic to print by control module
Shower nozzle realizes that layer upon layer obtains 0.1~2mm three-dimensional micro-nano structure；
7) after the three-dimensional micro-nano structure of single printing to be done, melting electrostatic printing head is switched to solution printing by program automatically
Shower nozzle, solution printing head is by step 2) in solution containing conducting medium step 6 is filled into the way of extruding) in gained three
Tie up in micro-nano structure, solution packed height is slightly lower than the height of three-dimensional micro-nano structure, utilizes temperature crosslink or chemical crosslinking
Method make the plastic of solution containing conducting medium, the salting liquid containing conductive ion then without carrying out crosslinking Treatment, forms new connects
Platform is closed flat, program automatically heightens the distance between melting printing head and receiving platform the thickness of a colloid：0.1~2mm；
8) according to the program of control mobile platform, automatic repeat step 6) and step 7), until the height of three-dimensional micro-nano structure reaches
To required height, obtain that three-dimensional micro-nano structure and dielectric be molten and composite construction of hydrogel；
9) dielectric solution inside the composite construction that removal step 8 is obtained by way of cleaning, change temperature or chemical reaction
Or hydrogel, obtain big height micro-nano structure, additionally it is possible to obtain the composite construction of big height micro-nano structure and hydrogel.
2. a kind of three-dimensional melting electrostatic Method of printing of big height micro-nano structure according to claim 1, it is characterised in that：
Described step 2) in solution containing conducting medium include the various salting liquids containing conductive ion, salting liquid include sodium chloride it is molten
Liquid, calcium chloride solution, or the gel with certain electric conductivity-mix particles solution.
3. a kind of three-dimensional melting electrostatic Method of printing of big height micro-nano structure according to claim 2, it is characterised in that：
Described gel includes the gelatin and agarose, the chitosan of chemical crosslinking and sodium alginate, the poly- second of photo-crosslinking of temperature crosslink
Glycol and gelatin, or these materials mixed solution.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108340570A (en) * | 2018-01-05 | 2018-07-31 | 西北工业大学 | Using the 3D salting liquids printing equipment and Method of printing of evaporation accumulation molding technology |
| CN108819223A (en) * | 2018-06-11 | 2018-11-16 | 南京理工大学 | A kind of interior three-dimensional structural circuit integrated manufacture method based on 3D printing |
| CN113793965A (en) * | 2021-09-01 | 2021-12-14 | 西安交通大学 | Multi-material printing device and method for flexible ionic gel battery |
| CN115042429A (en) * | 2022-07-04 | 2022-09-13 | 浙江理工大学 | Research method for high-precision printing of micron fibers |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4008522A1 (en) * | 2020-12-02 | 2022-06-08 | Technische Universität München | Electro-spinning/writing system and corresponding method |
| AU2021400828A1 (en) * | 2020-12-15 | 2023-06-22 | Illumina, Inc. | Flow cell coating methods |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898618A (en) * | 2014-03-06 | 2014-07-02 | 广东工业大学 | Electrospinning jet flow fast stabilization control device for micro-nano machining and control method thereof |
| CN104760283A (en) * | 2015-03-16 | 2015-07-08 | 东莞劲胜精密组件股份有限公司 | 3D-printing method |
| CN104887346A (en) * | 2015-06-19 | 2015-09-09 | 西安交通大学 | High-accuracy biological 3D (three-dimensional) printing method |
| CN105346083A (en) * | 2015-11-20 | 2016-02-24 | 苏州光韵达光电科技有限公司 | 3D printing method based on electrostatic spinning |
| WO2016050357A1 (en) * | 2014-10-02 | 2016-04-07 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e. V. | Methods for preparing and orientating biopolymer nanofibres and a composite material comprising the same |
| CN106084257A (en) * | 2016-06-06 | 2016-11-09 | 东华大学 | A kind of composite aquogel and preparation method thereof |
| CN106222085A (en) * | 2016-07-28 | 2016-12-14 | 西安交通大学 | A kind of high-precision biology is combined 3D printing equipment and Method of printing |
-
2017
- 2017-04-26 CN CN201710280584.6A patent/CN106948014B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103898618A (en) * | 2014-03-06 | 2014-07-02 | 广东工业大学 | Electrospinning jet flow fast stabilization control device for micro-nano machining and control method thereof |
| WO2016050357A1 (en) * | 2014-10-02 | 2016-04-07 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e. V. | Methods for preparing and orientating biopolymer nanofibres and a composite material comprising the same |
| CN104760283A (en) * | 2015-03-16 | 2015-07-08 | 东莞劲胜精密组件股份有限公司 | 3D-printing method |
| CN104887346A (en) * | 2015-06-19 | 2015-09-09 | 西安交通大学 | High-accuracy biological 3D (three-dimensional) printing method |
| CN105346083A (en) * | 2015-11-20 | 2016-02-24 | 苏州光韵达光电科技有限公司 | 3D printing method based on electrostatic spinning |
| CN106084257A (en) * | 2016-06-06 | 2016-11-09 | 东华大学 | A kind of composite aquogel and preparation method thereof |
| CN106222085A (en) * | 2016-07-28 | 2016-12-14 | 西安交通大学 | A kind of high-precision biology is combined 3D printing equipment and Method of printing |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108340570A (en) * | 2018-01-05 | 2018-07-31 | 西北工业大学 | Using the 3D salting liquids printing equipment and Method of printing of evaporation accumulation molding technology |
| CN108340570B (en) * | 2018-01-05 | 2020-02-14 | 西北工业大学 | 3D saline solution printing device and method adopting evaporation accumulation molding technology |
| CN108819223A (en) * | 2018-06-11 | 2018-11-16 | 南京理工大学 | A kind of interior three-dimensional structural circuit integrated manufacture method based on 3D printing |
| CN113793965A (en) * | 2021-09-01 | 2021-12-14 | 西安交通大学 | Multi-material printing device and method for flexible ionic gel battery |
| CN113793965B (en) * | 2021-09-01 | 2024-01-09 | 西安交通大学 | Multi-material printing device and method for flexible ion gel battery |
| CN115042429A (en) * | 2022-07-04 | 2022-09-13 | 浙江理工大学 | Research method for high-precision printing of micron fibers |
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