CN107876779A - A kind of water nano silver 3D printing base substrate method and its forming method - Google Patents
A kind of water nano silver 3D printing base substrate method and its forming method Download PDFInfo
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- CN107876779A CN107876779A CN201711413239.1A CN201711413239A CN107876779A CN 107876779 A CN107876779 A CN 107876779A CN 201711413239 A CN201711413239 A CN 201711413239A CN 107876779 A CN107876779 A CN 107876779A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/10—Formation of a green body
- B22F10/12—Formation of a green body by photopolymerisation, e.g. stereolithography [SLA] or digital light processing [DLP]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/227—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by organic binder assisted extrusion
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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
- B33Y70/00—Materials specially adapted for additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The present invention relates to 3D technology field, discloses a kind of water nano silver 3D printing forming method.Comprise the following steps：S1. using water as carrier, monomer N is added into deionized water, N methylene bisacrylamides acyl, crosslinking agent methylene-bisacrylamide, additive ethyl acetate, the nano silver powder that volume ratio is 20~65% is added, it is standby to obtain low viscosity, the suspension slurry A of high solid volume fraction after ball grinding stirring；S2. preparing can be standby as substance B with the light curing agent of step S1 organic monomers generation gelling reaction；S3. substance B in slurry A in step S1 and step S2 is uniformly mixed, obtains mixture C；S4. mixture C is delivered to 3D printing head and gives the ultraviolet light or laser beam that organic monomer can be accelerated to polymerize, so that 3D printing head implements printing under ultraviolet light or laser beam atmosphere, printed according to three-dimensional modeling data, layer upon layer shaping, finally give the base substrate of required shape.
Description
Technical field
The present invention relates to 3D technology field, more particularly, to a kind of water nano silver 3D printing base substrate method and its into
Type method.
Background technology
3D printing technique is a kind of emerging rapid shaping technique, by being successively superimposed material manufacture 3 D stereo
Structure technology in kind, different from traditional removal material manufacture technology, therefore also known as increasing material manufacturing, 3D printing are main
Selective laser sintering technology (SLS), melting sedimentation (FDM) and Stereo Lithography technology (SLA).
The high-strength high hardware features of advanced ceramics material and hard material, make it be difficult to be molded, development in science and technology to ceramics,
Hard alloy product complexity and required precision more and more higher, this has turned into the biggest obstacle of its application.And increasing material manufacturing（3D
Printing）The appearance of technology, then make it possible breakthrough advanced ceramics application biggest obstacle i.e. difficult forming.3D printing ceramics nothing
Proembryo and mould are needed, is also not required to process, just can be directly according to computer graphics data, the method by increasing material generates any
The complex structure of shape, therefore paid close attention to by domestic and international ceramic field expert height.The Gao Rong of ceramics and hard alloy
Point, high hard fragility cause its increasing material manufacturing to be most difficult to the material of printing shaping, generally to make by high polymer material or metal material
3D printing is carried out for binding agent.Adopt selective laser sintering, selective laser fusing, laser near-net-shape, electron beam selective melting etc.
Straight forming mode can often produce larger thermal stress in rapid solidification, uncomfortable so as to form more micro-crack
Close increasing material manufacturing ceramic material.Fused glass pellet mixes ceramic powders and organic binder bond, with extruder or capillary
Blood vessel rheometer makes silk, and then layer molding mode makes ceramic member raw embryo, prepared by follow-up sintering.The shortcomings that the method
It is that surface zonal texture occurs, formed precision is poor, needs follow-up grinding process.Photocuring is 3D printing technique formed precision highest,
And efficiently, highly integrated, stock utilization is high, its print the operation principle of ceramic powders be by by laser added with ceramics
Powder or presoma liquid photosensitive resin optionally curing molding complex parts, then through drying, degreasing, sintering, so can
Although to protect the high accuracy for levying forming ceramic products, costly, system operates to liquid requires harsh to its equipment, shaping
Part is mostly resin, and material price is expensive and limited capacity, is unfavorable for storing for a long time, environmental pollution is serious.
Gel-casting technology is combined by the defects of existing for existing 3D printing technique, the present invention with 3D printing, is proposed
A kind of water nano silver 3D printing forming method, the principle of gel injection molding and forming technology are situ-gel solidifications, shaping speed compared with
Hurry up, can near-net-shape complex component, and even green body is good, high mechanical strength, sintering character are excellent, therefore expands
Gelcasting Technique is combined with 3D printing techniques, it will thus provide a kind of brand-new 3D printing technique, so as to solve existing 3D
The defects of printing technique, the Material Field using 3D shapings is expanded significantly.
The content of the invention
The technical problem to be solved in the present invention in view of the shortcomings of the prior art, introduces casting molding technique, using water as carrier,
With reference to 3D printing technique, there is provided a kind of brand-new water nano silver 3D printing base substrate method.
The present invention also provides a kind of water nano silver 3D printing forming method.
The purpose of the present invention is achieved by the following technical programs：
A kind of water nano silver 3D printing forming method is provided, comprised the following steps：
S1. using water as carrier, monomer N, N- methylene bisacrylamide acyl, crosslinking agent methylene bisacrylamide acyl are added into deionized water
Amine, additive ethyl acetate, the nano silver powder that volume ratio is 20~65% is added, low viscosity, Gao Gu are obtained after ball grinding stirring
The suspension slurry A of phase volume fraction is standby；
S2. preparing can be standby as substance B with the light curing agent of step S1 organic monomers generation gelling reaction；
S3. substance B in slurry A in step S1 and step S2 is uniformly mixed, obtains mixture C；
S4. mixture C is delivered to 3D printing head and gives the ultraviolet light or laser beam that organic monomer can be accelerated to polymerize so that 3D
Printhead implements printing under ultraviolet light or laser beam atmosphere, is printed according to three-dimensional modeling data, layer upon layer shaping, most
The base substrate of shape needed for obtaining eventually.
The principle of the present invention is the ZrO for using water as carrier, adding low-density2Dispersiveness is formed after powder body material preferably
Powder suspension, the powder suspension viscosity is low, and solid concentration is high, good fluidity, after adding organic monomer, will be uniformly dispersed
Powder suspension in particles coat be allowed to fixation in situ, so as to obtain the outstanding of the composite of powder and macromolecule organic
Supernatant liquid, the substance B by the way that gelling reaction occurs with organic monomer, which mixes, is chemically crosslinked the organic monomer in suspension liquid
Or it is physical crosslinking the base that advanced base intensity and precision into three-dimensional network-like structure, are quickly prepared with reference to 3D printing technique
Body.
Preferably, N described in step S1, N- methylene bisacrylamide acyl addition are 45~55wt%, and the ethyl acetate adds
It is 7~9wt% to enter amount, and methylene-bisacrylamide addition is 0.5~2wt%.
Preferably, 0.1~1wt%% defrother is also added into described in step S1 in deionized water.
Preferably, light curing agent described in step S2 is light curing agent 819.
Preferably, three-dimensional modeling data described in step S4 is to design required planform using 3D sculpting software
Part model, by part model carry out hierarchy slicing processing, synusia thickness is 0.05~0.2mm.
The present invention also provides a kind of water nano silver 3D printing forming method, comprises the following steps：By above-mentioned water nano
The base substrate that silver-colored 3D printing base substrate method is prepared is dried, and obtains high intensity base substrate, then dumping and sinters, and obtains final
Product.
Preferably, the drying refers to base substrate placing 24~72h in room temperature, is then dried in vacuo at 60 DEG C.
Preferably, the dumping and sintering refer to that base substrate is incubated 3h at 600 DEG C and carries out dumping processing, then are placed on vacuum bar
Under part, temperature is to sinter 2h at 1000~1300 DEG C.
Compared with prior art, the beneficial effects of the invention are as follows：
The defects of present invention exists for existing 3D printing technique, gel-casting technology is combined with 3D printing, is proposed a kind of
Water nano silver 3D printing forming method, the situ-gel principle of solidification is combined with 3D printing, without proembryo and mold developing,
It is not required to process, just can be directly according to computer graphics data, the method by increasing material generates the complicated shape of any shape
Object, this method are same even green body in ensure that gel-casting technology is good, high mechanical strength, excellent sintering character the advantages of
When, production efficiency is also drastically increased, the base substrate green strength for printing to obtain is high, precision is high.
The present invention using low viscosity, high solid volume fraction, good fluidity powder suspension as 3D printing raw material, without
Conveying, mixing and extrusion can be realized in 3D printing equipment by ambient pressure, with cost is low, reliability is high, operational
The advantages that strong, and hardening time is fast, and solidification precision is high, it is easy to accomplish industrialized production.
The present invention can reduce the viscosity of gelling precursor using water as solvent, avoid using caused by organic matter solvent
Problem of environmental pollution, and drying process is simple, belongs to environmentally friendly technique, is adapted to industrialized production.
Brief description of the drawings
Fig. 1 present invention process flow charts.
Fig. 2 present device schematic diagrames.
Embodiment
The present invention provides a kind of water nano silver 3D printing forming method, and concrete technology method is as shown in figure 1, including following
Step：
S1. using water as carrier, monomer N, N- methylene bisacrylamide acyl, crosslinking agent methylene bisacrylamide acyl are added into deionized water
Amine, additive ethyl acetate, the nano silver powder that volume ratio is 20~65% is added, low viscosity, Gao Gu are obtained after ball grinding stirring
The suspension slurry A of phase volume fraction is standby；
S2. preparing can be standby as substance B with the light curing agent of step S1 organic monomers generation gelling reaction；
S3. substance B in slurry A in step S1 and step S2 is uniformly mixed, obtains mixture C；
S4. mixture C is delivered to 3D printing head and gives the ultraviolet light or laser beam that organic monomer can be accelerated to polymerize so that 3D
Printhead implements printing under ultraviolet light or laser beam atmosphere, is printed according to three-dimensional modeling data, layer upon layer shaping, most
The base substrate of shape needed for obtaining eventually；
S6. the obtained base substrates of step S5 are dried, obtain high intensity base substrate, then dumping and sintered, obtain final products.
Wherein, it is that the nano silver powder of low-density and water are made into low viscosity, high solid volume fraction, flowing in step S1
The good powder suspension of property（According to actual conditions addition dispersant can be selected to improve solid concentration）, and simultaneous selection is suitable
Organic monomer be added to component units gelling system in powder suspension, or the suitable organic monomer of selection and crosslinking agent add
Enter and polynary gel rubber system is formed into powder suspension；Substance B light curing agent in step S2, the method drawn using light, step S4
The middle condition that organic monomer can be accelerated to polymerize is ultraviolet light or laser beam.
For the above method, the water-based 3D printing former of the present invention may be designed to as shown in Fig. 2 including slurry tank 1, storage
Batch can 2, mixing tank 3 and 3D printing equipment 4, slurry tank 1, storage tank 2 are connected with mixing tank 3 respectively, and mixing tank 3 is set with 3D printing
First 41 connection of 3D printing in standby 4；
Agitating device 11 is provided with slurry tank 1, discharge outlet is provided with metering device 12, and the discharge outlet of storage tank 2 is provided with metering and filled
21 are put, agitating device 31 is provided with mixing tank 3.
The water-based 3D printing former operation principle of the present invention is as follows：It can occur the slurry A prepared and with organic monomer
The substance B of gelling reaction is individually positioned in slurry tank 1 and storage tank 2, if necessary to add initiator and catalyst simultaneously, is stored up
Batch can 2 at least needs to prepare 2 separately storage initiator and catalyst, then mixes, can also be directly being starched with slurry respectively
Catalyst is first added in material, slurry, which fills the working condition that the agitating device 11 in 1 is kept stirring for, prevents slurry A from depositing, it is necessary to beat
When print, three-dimensional modeling data is imported into 3D printing equipment 4, the material in slurry tank 1 and storage tank 2 is respectively by passing through meter
Amount device 12 and metering device 21 prepare be delivered in mixing tank 3 in proportion, and the agitating device 31 in mixing tank 3 keeps work shape
State, mixture C is delivered in the 3D printing head of 3D printing equipment 4 after well mixed, 3D printing equipment 4 is according to threedimensional model number
Factually injection prints, and needs to give ultraviolet light or laser beam that the interior energy of 3D printing equipment 4 accelerates organic monomer polymerization in print procedure,
Obtain base substrate be dried again, dumping, sintering, finally give product.
Wherein, due to slurry A good fluidities, Action of Gravity Field is passed through（Such as under the control of valve）It can complete to convey, mix
Close, without ambient pressure, it is contemplated that some situations need to accelerate the efficiency of 3D printing, can also be acted on by pressure（Such as note
Penetrate or pump）To accelerate material conveying, mixing.The present invention realizes that the equipment for the condition for accelerating organic monomer polymerization is light irradiation apparatus,
It can be on the print platform of 3D printing equipment to apply object.Specific device and structure those skilled in the art can bases
Actual conditions select and design.
The present invention is further illustrated with reference to specific embodiment.Following examples are only illustrative examples, not structure
Into inappropriate limitation of the present invention, the multitude of different ways that the present invention can be limited and covered by the content of the invention is implemented.It is unless special
Do not mentionlet alone bright, the present invention reagent, compound and the equipment that use is the art conventional reagent, compound and equipment.
Embodiment 1
The present embodiment provides a kind of water nano silver 3D printing forming method, comprises the following steps：
S1. using water as carrier, it is monomer N, N- methylene bisacrylamide acyl to add mass ratio into deionized water（DMAA）For
50wt%, additive ethyl acetate（EA）For 8wt%, crosslinking agent methylene-bisacrylamide（MBAM）For 1wt%, defrother 0.1
~1wt%%, add the nano silver powder that volume ratio is 50%, low viscosity, high solid volume fraction are obtained after ball grinding stirring
Suspension slurry A is standby；
S2. a certain amount of light curing agent that can trigger gelling reaction is configured（Light curing agent 819）, it is standby to obtain substance B；
S3. the A material prepared by step S1 are placed in Fig. 2 in slurry tank 1, and are stirred.B material prepared by step S2 are placed in Fig. 2
In storage tank 2；
S4. data modeling：The part model of required planform is designed using 3D sculpting software, part model is divided
Layer slicing treatment, synusia thickness is 0.05~0.2mm, obtains the three-dimensional modeling data of part, and import in 3D printing equipment；
S5. A material and B material are passed through metering in mass ratio 90~100 by equipment respectively by setting proportioning:2 are delivered to mixing tank in Fig. 2
Agitated to obtain compound C in 3, then mixture C is delivered in the printhead in 3D printing equipment, according to three-dimensional modeling data
Printed, the ultraviolet light or laser beam that organic monomer can be accelerated to polymerize are given in print procedure, specifically in wavelength 365~405
Printed under atmosphere so that mixture C solidifies rapidly, layer upon layer shaping, finally gives the base substrate of required shape；
S6. the base substrate that step S5 is obtained is placed into 24~72h in room temperature, is then dried in vacuo at 60 DEG C, obtains high intensity base
Body, then in the case where flowing atmospheric condition, high intensity base substrate is incubated 3h at 600 DEG C and carries out dumping processing, then is placed on vacuum bar
Under part, temperature is to sinter 2h at 1000~1300 DEG C, obtains final products.
Originally it is embodied as ensureing to be molded soon during 3D printing（Each layer will not produce deformation during layer upon layer）, improve solidification speed
Rate and green strength, slurry A proportioning is optimized, suitably（It is too high to cause impurity excessive on the contrary）Improve the weight of monomer addition
Percentage is measured, and with the addition of additive ethyl acetate（EA）, implement printing under ultraviolet light or laser beam atmosphere.
The base substrate green strength that the present embodiment is prepared reaches 24MPa, and relative density more than 98% is sintered in normal temperature air.
Embodiment 2
The present embodiment provides a kind of water nano silver 3D printing forming method, comprises the following steps：
S1. using water as carrier, it is monomer N, N- methylene bisacrylamide acyl to add mass ratio into deionized water（DMAA）For
45wt%, additive ethyl acetate（EA）For 7wt%, crosslinking agent methylene-bisacrylamide（MBAM）It is for 0.5wt%, defrother
0.1~1wt%%, the nano silver powder that volume ratio is 50% is added, low viscosity, high solid volume fraction are obtained after ball grinding stirring
Suspension slurry A it is standby；
S2. a certain amount of light curing agent that can trigger gelling reaction is configured（Light curing agent 819）, it is standby to obtain substance B；
S3. the A material prepared by step S1 are placed in Fig. 2 in slurry tank 1, and are stirred.B material prepared by step S2 are placed in Fig. 2
In storage tank 2；
S4. data modeling：The part model of required planform is designed using 3D sculpting software, part model is divided
Layer slicing treatment, synusia thickness is 0.05~0.2mm, obtains the three-dimensional modeling data of part, and import in 3D printing equipment；
S5. A material and B material are passed through metering in mass ratio 90~100 by equipment respectively by setting proportioning:2 are delivered to mixing tank in Fig. 2
Agitated to obtain compound C in 3, then mixture C is delivered in the printhead in 3D printing equipment, according to three-dimensional modeling data
Printed, the ultraviolet light or laser beam that organic monomer can be accelerated to polymerize are given in print procedure, specifically in wavelength 365~405
Printed under atmosphere so that mixture C solidifies rapidly, layer upon layer shaping, finally gives the base substrate of required shape；
S6. the base substrate that step S5 is obtained is placed into 24~72h in room temperature, is then dried in vacuo at 60 DEG C, obtains high intensity base
Body, then in the case where flowing atmospheric condition, high intensity base substrate is incubated 3h at 600 DEG C and carries out dumping processing, then is placed on vacuum bar
Under part, temperature is to sinter 2h at 1000~1300 DEG C, obtains final products.
The base substrate green strength that the present embodiment is prepared reaches 18MPa, and relative density more than 97% is sintered in normal temperature air.
Embodiment 3
The present embodiment provides a kind of water nano silver 3D printing forming method, comprises the following steps：
S1. using water as carrier, it is monomer N, N- methylene bisacrylamide acyl to add mass ratio into deionized water（DMAA）For
55wt%, additive ethyl acetate（EA）For 9wt%, crosslinking agent methylene-bisacrylamide（MBAM）For 2wt%, defrother 0.1
~1wt%%, add the nano silver powder that volume ratio is 65%, low viscosity, high solid volume fraction are obtained after ball grinding stirring
Suspension slurry A is standby；
S2. a certain amount of light curing agent that can trigger gelling reaction is configured（Light curing agent 819）, it is standby to obtain substance B；
S3. the A material prepared by step S1 are placed in Fig. 2 in slurry tank 1, and are stirred.B material prepared by step S2 are placed in Fig. 2
In storage tank 2；
S4. data modeling：The part model of required planform is designed using 3D sculpting software, part model is divided
Layer slicing treatment, synusia thickness is 0.05~0.2mm, obtains the three-dimensional modeling data of part, and import in 3D printing equipment；
S5. A material and B material are passed through metering in mass ratio 90~100 by equipment respectively by setting proportioning:2 are delivered to mixing tank in Fig. 2
Agitated to obtain compound C in 3, then mixture C is delivered in the printhead in 3D printing equipment, according to three-dimensional modeling data
Printed, the ultraviolet light or laser beam that organic monomer can be accelerated to polymerize are given in print procedure, specifically in wavelength 365~405
Printed under atmosphere so that mixture C solidifies rapidly, layer upon layer shaping, finally gives the base substrate of required shape；
S6. the base substrate that step S5 is obtained is placed into 24~72h in room temperature, is then dried in vacuo at 60 DEG C, obtains high intensity base
Body, then in the case where flowing atmospheric condition, high intensity base substrate is incubated 3h at 600 DEG C and carries out dumping processing, then is placed on vacuum bar
Under part, temperature is to sinter 2h at 1000~1300 DEG C, obtains final products.
The base substrate green strength that the present embodiment is prepared reaches 21MPa, and relative density more than 98% is sintered in normal temperature air.
Embodiment 4
The present embodiment is substantially the same manner as Example 1, and difference is, the volume fraction of nano silver powder is described in step S1
65%。
The present embodiment changes nano silver powder volume fraction, and the base substrate green strength being prepared reaches 23MPA, sintering
Relative density is obtained afterwards reaches more than 98%.
Embodiment 5
The present embodiment is substantially the same manner as Example 1, and difference is, the volume fraction of nano silver powder is described in step S1
20%。
The present embodiment changes nano silver powder volume fraction, and the base substrate green strength being prepared reaches 16MPA, sintering
Relative density is obtained afterwards reaches more than 97%.
Claims (9)
- A kind of 1. water nano silver 3D printing base substrate method, it is characterised in that comprise the following steps：S1. using water as carrier, monomer N, N- methylene bisacrylamide acyl, crosslinking agent methylene bisacrylamide acyl are added into deionized water Amine, additive ethyl acetate, the nano silver powder that volume ratio is 20~65% is added, low viscosity, Gao Gu are obtained after ball grinding stirring The suspension slurry A of phase volume fraction is standby；S2. preparing can be standby as substance B with the light curing agent of step S1 organic monomers generation gelling reaction；S3. substance B in slurry A in step S1 and step S2 is uniformly mixed, obtains mixture C；S4. mixture C is delivered to 3D printing head and gives the ultraviolet light or laser beam that organic monomer can be accelerated to polymerize so that 3D Printhead implements printing under ultraviolet light or laser beam atmosphere, is printed according to three-dimensional modeling data, layer upon layer shaping, most The base substrate of shape needed for obtaining eventually.
- 2. water nano silver 3D printing base substrate method according to claim 1, it is characterised in that N described in step S1, N- are sub- The double acryloyl additions of methyl are 45~55wt%, and the ethyl acetate addition is 7~9wt%, and methylene-bisacrylamide adds It is 0.5~2wt% to enter amount.
- 3. water nano silver 3D printing base substrate method according to claim 1, it is characterised in that deionization described in step S1 0.1~1wt%% defrother is also added into water.
- 4. water nano silver 3D printing base substrate method according to claim 1, it is characterised in that photocuring described in step S2 Agent is light curing agent 819.
- 5. water nano silver 3D printing base substrate method according to claim 4, it is characterised in that the purple of light described in step S4 The wavelength of outer light or laser beam is 365~405.
- 6. water nano silver 3D printing base substrate method according to claim 1, it is characterised in that three-dimensional mould described in step S4 Type data are that the part model of required planform is designed using 3D sculpting software, and part model is carried out at hierarchy slicing Reason, synusia thickness is 0.05~0.2mm.
- 7. a kind of water nano silver 3D printing forming method, it is characterised in that comprise the following steps：Claim 1~6 is any The base substrate that one water nano silver 3D printing base substrate method is prepared is dried, and obtains high intensity base substrate, Ran Houpai Glue simultaneously sinters, and obtains final products.
- 8. water nano silver 3D printing forming method according to claim 7, it is characterised in that the drying refers to by base Body places 24~72h in room temperature, is then dried in vacuo at 60 DEG C.
- 9. water nano silver 3D printing forming method according to claim 7, it is characterised in that the dumping and sinter refer to Base substrate is incubated 3h at 600 DEG C and carries out dumping processing, then places under vacuum, and temperature is to sinter 2h at 1000~1300 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711413239.1A CN107876779A (en) | 2017-12-24 | 2017-12-24 | A kind of water nano silver 3D printing base substrate method and its forming method |
Applications Claiming Priority (1)
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