CN107639862B - A kind of method of laser irradiation regulation PA2200 material 3D printing part surface wettability - Google Patents
A kind of method of laser irradiation regulation PA2200 material 3D printing part surface wettability Download PDFInfo
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- CN107639862B CN107639862B CN201711093999.9A CN201711093999A CN107639862B CN 107639862 B CN107639862 B CN 107639862B CN 201711093999 A CN201711093999 A CN 201711093999A CN 107639862 B CN107639862 B CN 107639862B
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- surface wettability
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Abstract
A kind of method of laser irradiation regulation PA2200 material 3D printing part surface wettability, belongs to laser processing, 3D printing technique and medical application fields.Laser irradiation method has many advantages, such as accurately to handle surface of shaped parts, control working (finishing) area and depth, non-contact pollution-free and will not introduce foreign ion.The present invention is realized by following device: being sequentially placed the equal Shu Jing of laser, compound eye, lens, sample stage along the laser transmission direction of laser.The present invention uses wavelength for the KrF excimer laser of 248nm using preparation PA2200 material 3D printing part, and design optical path obtains laser irradiation facula area 1-2.7cm2, set the single pulse energy metric density 37-259mJ/cm of laser2, frequency 2-5Hz, umber of pulse 200-500 irradiate PA2200 material 3D printing part.After laser irradiation, printout surface contact angle becomes 70 ° from 120 °, is changed into hydrophily by hydrophobicity, effectively and rapidly regulates and controls PA3200 material 3D printing part surface wettability.
Description
Technical field
The present invention relates to laser processing, 3D printing technique and medical application fields, especially devise a kind of laser irradiation
Regulate and control the method for PA2200 material 3D printing part surface wettability.
Background technique
PA2200 is a kind of high molecular material, is made of pure PA12, and white is presented, and has good mechanical performance and biology
Compatibility.Currently, PA2200 material is applied to selective laser sintering (SLS) 3D printing forming technique, it is molding based on this technology
PA2200 printout has a wide range of applications in the medical field, including medical instrument: biological support, suture, syringe, thoroughly
Desorption device element and implantation material: foley's tube, blood vessel graft, sclerous tissues' implantation material etc..Selective laser sintering (SLS) is a kind of
The 3D printing of powdering formula is layered forming technique, and with accuracy of manufacture height, print speed is fast, can customize personalized production according to demand
The features such as labyrinths such as product straight forming hanging, thin-walled, based on SLS technology preparation PA2200 material medical instrument and implantation material
It has a wide range of applications in the medical field.PA2200 material 3D printing part applied to medical field need to have good
There is wellability hydrophilic surface property is presented for biocompatibility, biocompatibility requirement printout especially implantation material, so
And pass through SLS technology preparation PA2200 material 3D printing part surface wettability present hydrophobicity, this significantly limit its
Medical field is further applied.
Currently, the method for regulation PA class elements material surface wettability mainly has:
1. plasma method: when the gas stream in upper state touches the surface of modified material, material surface can be caused
Physics and chemistry variation.Nitrogen and oxygen plasma cognition cause its surface that physical and chemical changes occur in PA class material.
Plasma method can effectively regulate and control PA class elements material surface wettability, but it causes the surface-functionalized of molded part
It influences.
2. surface covering is modified method: the hydrophily using physical method in the preparation crosslinking of the class elements material surface PA applies
Layer, can effectively regulate and control PA class elements material surface wettability, but coating is easy to fall off.
3. being introduced into Functional Group Method: introducing specific functional group for the amido bond in PA class material, regulate and control surface of shaped parts
Wellability can effectively regulate and control PA class elements material surface wettability, but it causes pollution to the surface of molded part,
And the change of surface of shaped parts wellability is unable to long duration.
4. laser irradiation method: in recent years, PA class surface of shaped parts is irradiated using various lasers, it can be effective
Regulate and control PA class elements material surface wettability, compared to other several methods, laser irradiation method has and can accurately be processed into
It is airfoil surface, control working (finishing) area and depth, non-contact, pollution-free and the advantages that foreign ion will not be introduced, but at present still
Do not occur regulating and controlling the report of 3D printing surface of shaped parts wellability about laser irradiation.
Therefore, the present invention regulates and controls PA2200 material 3D printing part surface wettability, this method using the method for laser irradiation
Process flow is simple and effectively and rapidly regulates and controls printout surface wettability.
Summary of the invention
The object of the present invention is to provide a kind of methods of laser irradiation regulation PA2200 material 3D printing part surface wettability.
The purpose of the present invention is realized by following device:
The equal Shu Jing of laser, compound eye, lens, sample stage are sequentially placed along the laser transmission direction of laser.
What the purpose of the present invention was achieved through the following technical solutions:
1) PA2200 is prepared using precinct laser sintering (Selective Laser Sintering, SLS) 3D printing technique
Material 3D printing part after the completion of printout preparation, is dipped in the alcohol solvent that concentration is 99.7% and is cleaned by ultrasonic, be subsequently dipped to
It is cleaned by ultrasonic in deionized water, finally puts it into drying box and dried；
2) optical path is designed, the position of the equal Shu Jingyu lens of compound eye in optical path is adjusted, so that light beam is focused on sample stage, this process
In, first determine that light-sensitive paper is first placed after determining to compound eye equal beam mirror position in the position of the equal Shu Jing of compound eye on sample stage,
Laser irradiation light-sensitive paper, will appear rectangular light spot on light-sensitive paper, (the equal beam mirror of compound eye can carry out shaping to laser beam and obtain square
Shape hot spot), by measuring its length and the available laser irradiation facula area of width, the position of lens is adjusted, laser irradiation is obtained
Facula area 1-2.7cm2.After the completion of optical path adjustment, it will be fixed on sample stage through the processed 3D printing part of step 1)；
3) it uses wavelength for the KrF excimer laser of 248nm, sets output energy, the pulse frequency of laser, pulse
Number irradiates 3D printing part.The single pulse energy metric density 37-259mJ/cm of laser in irradiation process2, frequency 2-5Hz, umber of pulse
200-500。
The present invention is the high-energy based on laser beam, and photochemical and thermal reaction and photochemical reaction can occur with substance, regulation
The wellability on PA2200 material 3D printing part surface.Not yet occurs laser irradiation regulation PA2200 material 3D printing part surface at present
The method of wellability.This method has apparent innovative:
1) material that this method uses is PA2200, and the forming technique used is the selective laser sintering in 3D printing technique
(SLS) technology；
2) the KrF excimer laser that this method is 248nm using wavelength, laser irradiation facula area 1-2.7cm2, swash
Light device single pulse energy metric density 37-259mJ/cm2, frequency 2-5Hz, umber of pulse 200-500, and can be real using the equal beam mirror of compound eye
Existing laser beam shaping and Uniform Irradiation surface of shaped parts；
3) this method can carry out under normal temperature atmosphere, and export energy and laser irradiation light by adjusting laser
Spot size, to change the surface wettability of laser energy density regulation 3D printing part, overall procedure process is simple, controllable
Property it is high.
4) this method using laser irradiation be it is contactless, in irradiation process and other substances are not introduced into, not to printing
Part pollutes, and entire irradiation process can be completed in 1 minute, very quickly.
Detailed description of the invention
Fig. 1 is a kind of optical path of laser irradiation regulation PA2200 material 3D printing part surface wettability method of the present invention
Design and beam Propagation figure.
Fig. 2 is the 3D printing part of laser irradiation regulation PA2200 material 3D printing part surface wettability method of the present invention
The variation diagram of surface infiltration (wellability is characterized with contact angle).
Specific embodiment
The specific embodiment of the invention is described in further details with reference to the accompanying drawing:
Step 1: preparing PA2200 material 3D printing part using SLS technology
The step for be to prepare PA2200 material 3D printing part, detailed process is divided into data preparation, printing, subsequent cleaning:
1) data preparation: using the model of magics software preparation STL format, after model preparation is good, RP Tools is utilized
Slice Software carries out slicing treatment to model, and eosjz file is imported in PSW software and be stored as after slice, after this file is led
Enter in 3D printer EOS P396 machine PSW software and load this file, Data Preparation Process is with regard to this completion；
2) it prints: before printer is printed, pre- powdering 9mm being needed to carry out preheating 2 hours, it can be into after the completion of preheating
Row printing.In print procedure, printer is successively printed according to printout cross section information, every layer of printing 0.12mm, until beating
Work is printed to complete；
3) subsequent cleaning: after the completion of to be printed, printout is taken out from the moulding cylinder of printer after 10 hours cooling, so
Afterwards using dust inside high pressure air rifle cleaning printout, after the completion of cleaning, it is super to be dipped in the alcohol solvent that concentration is 99.7%
Sound cleaning, is subsequently dipped to be cleaned by ultrasonic in deionized water, finally puts it into drying box and dry.
Step 2: design index path, laser irradiation regulate and control PA2200 material 3D printing part surface wettability
Refering to fig. 1, laser (1), the equal Shu Jing of compound eye (2), lens are sequentially placed along the laser transmission direction of laser
(3), sample stage (4).The laser is the KrF excimer laser of wavelength 248nm；The equal Shu Jing of the compound eye is by two
Microlens array composition, two microlens array optical parameters are identical, and second microlens array is located at the first array
Optical focus plane on；The lens are fourier lense, focal length value 60mm；The sample stage is used to fix sample
Product, to be irradiated.These optical devices are placed in uniform height first, first microlens array is fixed, passes through calculating
Show that the position of its focus, the position of the focus of microlens array will in the same plane set second microlens array
In on its focal plane.Lens are placed in behind second lenticule, light-sensitive paper is first placed on sample stage, laser irradiation is photosensitive
Paper, photosensitive upper generation rectangular light spot (the equal beam mirror of compound eye can carry out shaping to laser beam and obtain rectangular light spot), passes through measurement
It is grown and the available facula area of width, and the position for adjusting lens determines laser irradiation facula area 1-2.7cm2.Light path design
After good, the single pulse energy metric density 37-259mJ/cm of laser is set2, frequency 2-5Hz, umber of pulse 200-500, by step
One 3D printing part is fixed on sample stage, is irradiated.
Step 3: surface wettability detects
Referring to Fig.2, characterizing surface wettability by contact angle, contact angle is hydrophilic surface less than 90 °, and contact angle is big
It is hydrophobic surface in 90 °.After printout has irradiated, its surface contact angle is tested using contact angle measurement, it can by Fig. 2
To see, 120 ° of original print surface contact angle, hydrophobicity, after laser irradiation, printout surface contact angle is presented
70 °, hydrophily is presented.The above result shows that the method for laser irradiation regulation PA2200 material 3D printing part surface wettability is
It is feasible, and irradiation time be no more than 1 minute, very quickly.
Claims (3)
1. a kind of method of laser irradiation regulation PA2200 material 3D printing part surface wettability, which is characterized in that application is as follows
Device is sequentially placed laser (1), the equal Shu Jing of compound eye (2), lens (3) and sample stage along the laser transmission direction of laser
(4)；
Method includes the following steps:
1) PA2200 material 3D printing part is prepared using precinct laser sintering 3D printing technique, after the completion of printout preparation, by it
Alcohol solvent ultrasonic cleaning is immersed, is subsequently dipped to be cleaned by ultrasonic in deionized water, finally puts it into drying box and dried；
2) optical path is designed, the position of the equal Shu Jing of compound eye (2) and lens (3) in optical path is adjusted, makes laser beam focusing in sample stage
(4)；During this, the position of the equal Shu Jing of compound eye is first determined, after determining to compound eye equal beam mirror position, on sample stage (4)
First place light-sensitive paper, laser irradiation light-sensitive paper can generate rectangular light spot on light-sensitive paper, adjust the position of lens (3), obtain laser
Irradiate facula area 1-2.7cm2；After the completion of optical path adjustment, it will be fixed on sample stage through the processed 3D printing part of step 1)；
3) it uses wavelength for the KrF excimer laser of 248nm, sets output energy, the pulse frequency of laser (1), pulse
Number irradiates 3D printing part；The single pulse energy metric density 37-259mJ/cm of laser in irradiation process2, frequency 2-5Hz, umber of pulse
200-500。
2. the method for laser irradiation regulation PA2200 material 3D printing part surface wettability according to claim 1, special
Sign is to irradiate to be carried out under normal temperature and pressure atmosphere.
3. the method for laser irradiation regulation PA2200 material 3D printing part surface wettability according to claim 1, special
Sign is to export energy and laser irradiation facula area size by adjusting laser, to change laser energy density regulation 3D
The surface wettability of printout.
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| CN108971493B (en) * | 2018-10-25 | 2020-09-29 | 南通理工学院 | Powder removing method for three-dimensional printing of thin-wall porous metal blank by 3DP method |
| CN109465549A (en) * | 2018-12-28 | 2019-03-15 | 英诺激光科技股份有限公司 | A kind of laser surface treatment method of interventional medical instrument |
| CN110406266B (en) * | 2019-08-30 | 2020-08-25 | 昆山国显光电有限公司 | Inkjet printing apparatus and inkjet printing method |
| CN112247345A (en) * | 2020-09-17 | 2021-01-22 | 华侨大学 | Method for improving hydrophilicity of 3D printing biomaterial formed piece |
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| JP3436606B2 (en) * | 1995-04-03 | 2003-08-11 | 帝人株式会社 | Molded product made of polyester resin with excellent laser marking properties |
| JP2010234554A (en) * | 2009-03-30 | 2010-10-21 | Fujifilm Corp | Method for manufacturing printing plate |
| CN102895706B (en) * | 2012-11-12 | 2015-07-08 | 重庆大学 | Biomedical anti-corrosion porous compound material and preparation method thereof |
| CN104385613B (en) * | 2014-07-28 | 2016-12-07 | 中国科学院重庆绿色智能技术研究院 | Continuous fiber strengthens rapid prototyping system and the method for composite |
| CN104625415B (en) * | 2014-12-17 | 2016-06-08 | 中国航空工业集团公司北京航空制造工程研究所 | Femtosecond laser prepares method and the device of bionic super-hydrophobic micro nano surface |
| CN104985914B (en) * | 2015-07-10 | 2017-09-05 | 中国科学院理化技术研究所 | The photo-polymerization type lithographic printing plate material of aqueous developable comprising two layers of photosensitive layer and its application |
| CN106552286B (en) * | 2015-09-29 | 2019-07-19 | 胡懿郃 | The preparation method of artificial cartilage |
| WO2017127708A1 (en) * | 2016-01-22 | 2017-07-27 | Voxel8, Inc. | 3d printable composite waterborne dispersions |
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