CN104150915B - A kind of powder 3D Method of printing based on water-based inorganic binding agent - Google Patents
A kind of powder 3D Method of printing based on water-based inorganic binding agent Download PDFInfo
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- CN104150915B CN104150915B CN201410384306.1A CN201410384306A CN104150915B CN 104150915 B CN104150915 B CN 104150915B CN 201410384306 A CN201410384306 A CN 201410384306A CN 104150915 B CN104150915 B CN 104150915B
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Abstract
A kind of powder 3D Method of printing based on water-based inorganic binding agent, first deionized water is adopted to be binding agent solvent, add chloride salt as binder component, add and help volatilizer, colouring agent, modifier, the inorganic salt solution be mixed to form is as the binding agent of powder 3D printer; Adopt the inorganic salts oxide powder corresponding with chloride used as reaction material again, mix with 3D printer material powder, then the material that the mixed-powder adding flux formation prints as powder 3D; Then binding agent and mixed-powder are carried out powder 3D printing, the powder 3D that the present invention realizes having labyrinth goods prints manufacture fast, also ensure that the feature of environmental protection of manufacture process, reduces production cost, improve product quality.
Description
Technical field
The present invention relates to powder 3D printing technique field, be specifically related to a kind of powder 3D Method of printing based on water-based inorganic binding agent.
Background technology
It is a kind of 3D Method of printing utilizing droplet ejection, powder bonding technology that powder 3D prints (3DP).Under the control of the computer, according to the information in current hierarchical cross section, on one deck dusty material completed in advance, jet binder selectively, makes amount of powder bond to shower nozzle, forms one deck cross section thin layers; After one deck has been shaped, workbench declines a thickness, carries out the paving powder of lower one deck, then constituency jet binder, and shaping thin layer also can stick to one with formation of parts simultaneously; This process of continuous circulation, till part processes; Usually part formed thereby also needs certain post processing, as drying, sintering etc., thus obtains last part.
Print in technical process at powder 3D, General Requirements be used for its stable performance of binding agent that printhead sprays, can long term storage, to the corrosion-free effect of shower nozzle, viscosity, low and surface tension is suitable etc.Usually, the liquid-containing binder that can adopt can be divided into this three types: one, itself does not neither play the liquid of cementation with powdered reaction yet, as chloroform, ethanol etc., they only play provides the effect of medium for powder be combined with each other, itself can evaporate into remaining any material hardly after Mold Making is complete, the powder that inherently can be hardened by autoreaction is suitable for; Two, itself understand and the liquid of powdered reaction and the liquid itself having part adhesive effect, as organic binder bond comparatively conventional at present, they are by liquid-soaked and connect powder, then partially liq volatilization, powder can be combined with each other by the remaining binding agent with cementation, wherein, addible adhesion component comprises butyral resin, polyvinyl chloride, Polycarbosilane, polyvinylpyrrolidone and some other macromolecule resins etc.; Three, binding agent itself can and powder between can react, as taken aluminium oxide as the powder of main component, by the injection reaction solidification of acid binding agent, usually for metal dust, be usually add some slaines in a binder to bring out its reaction.
But described in above content, conventional powder 3D prints technique many employings organic binder bond system, and this binder system mainly exists the shortcoming of following two aspects:
1) organic matter binding agent stability is bad, after being subject to ectocine, apt to deteriorate, and not to store, meanwhile, organic binder bond also easily corrodes conveyance conduit and the printing head of binding agent, easily causes the blocking of shower nozzle;
2) powder 3D prints the part obtained needs to carry out the post processing such as degreasing, calcining usually, but, due to traditional organic matter binding agent unstable properties in high temperature, easy decomposition, do not reach bond effect, and may toxic gas be discharged, make powder 3D print produced part after degreasing, calcining, be difficult to obtain higher density and intensity.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of powder 3D Method of printing based on water-based inorganic binding agent, ensure that the feature of environmental protection of manufacture process, reduce production cost, improve product quality.
In order to achieve the above object, the present invention adopts following technical scheme:
Based on a powder 3D Method of printing for water-based inorganic binding agent, comprise the following steps:
1) 35-50 part deionized water is adopted to be binding agent solvent, add 50-65 part chloride salt as binder component, adding 0-50 part helps volatilizer to improve the rate of drying of binding agent, add 0-5 part colouring agent and carry out the painted of binding agent, add the modification that 0-5 part modifier carries out binding agent, the inorganic salt solution be mixed to form as the binding agent of powder 3D printer, using this inorganic salt solution as binding agent bonding reaction first reactant;
2) adopt and step 1) the corresponding inorganic salts oxide powder of chloride used is as reaction material, namely adopt 15-30 part magnesia (MgO) or 15-30 part zinc oxide (ZnO) as the second reactant, second reactant mixes with 70-85 part 3D printer material powder, add the adjustment that 0-10 part flux carries out powder property again, the material that above formed mixed-powder prints as powder 3D;
3) 20-40 part step 1 is adopted) binding agent prepared and 60-80 part step 2) mixed-powder prepared carries out powder 3D printing, preserve after printing completes and print part and carry out natural drying in powder 3D printer, or be sent in heated drying case or microwave drying oven and carry out drying; After drying completes, remove non-bond powders, directly obtain inorganic binder bonding ceramic part;
4) according to material composition needs, carry out high temperature sintering, obtain high strength part;
Described number is mass fraction.
Described chloride salt is magnesium chloride (MgCl
2) or zinc chloride (ZnCl
2) concentration be 5% ~ 70% aqueous solution.
The described volatilizer that helps is alcohol, acetone or methyl alcohol.
Described colouring agent is organic inks or inorganic ink.
Described modifier is thickener, surface modifier or dispersant.
Described material powder is the powder of pottery, diatomite, sand or gypsum.
Described flux is calcium oxide (CaO), potassium oxide (K
2o), sodium oxide molybdena (Na
2o), lead oxide (PbO) or boron oxide (B
2o
3).
Advantage of the present invention is the water-based inorganic binder system adopting chloride solution and corresponding oxide powder to be formed prints technique binding agent as powder 3D, this binder system for the unstability of organic matter binding agent, its stable performance, be easier to preserve; Simultaneously, based on water base inorganic binder, its viscosity is low, not easily block shower nozzle, to the corrosion-free effect of shower nozzle, more suitable surface tension can be obtained, thus the powder 3D that can realize having labyrinth goods prints manufacture fast, also ensure that the feature of environmental protection of manufacture process, reduce production cost, improve product quality.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1
Based on a powder 3D Method of printing for water-based inorganic binding agent, comprise the following steps:
1) adopt 35 parts of deionized waters to be binding agent solvent, add 64 parts of magnesium chloride (MgCl
2) 40% aqueous solution is as binder component, add 1 part of alcohol as the rate of drying helping volatilizer to improve binding agent, do not add colouring agent and carry out the painted of binding agent, the modification that modifier carries out binding agent is not added yet, the inorganic salt solution be mixed to form as the binding agent of powder 3D printer, using this inorganic salt solution as binding agent bonding reaction first reactant;
2) adopt and step 1) the corresponding inorganic salts oxide powder of chloride used is as reaction material, namely adopt 15 parts of magnesia (MgO) as the second reactant, second reactant mixes with the ceramic powders of 85 parts of 3D printers, do not add the adjustment that flux carries out powder property, the material that above formed mixed-powder prints as powder 3D;
3) 40 parts of steps 1 are adopted) binding agent prepared and 60 parts of steps 2) mixed-powder prepared carries out powder 3D printing, preserve after printing completes and print part and carry out natural drying in powder 3D printer, or be sent in heated drying case or microwave drying oven and carry out drying; After drying completes, remove non-bond powders, directly can obtain inorganic binder bonding ceramic part;
4) according to material composition needs, carry out high temperature sintering, obtain high strength part, described number is mass fraction.
Adopt the liquid binder agent solution that embodiment 1 scheme obtains, at room temperature, its viscosity <2 × 10
-3pas, viscosity is lower, the binding agent adhesion strength >0.8MPa that magnesium chloride inorganic salts magnesia is corresponding thereto formed, and bond effect is good, can meet the colored 3D of powder well and print requirement.
Embodiment 2
Based on a powder 3D Method of printing for water-based inorganic binding agent, comprise the following steps:
1) adopt 35 parts of deionized waters to be binding agent solvent, add 64 parts of zinc chloride (ZnCl
2) 40% aqueous solution is as binder component, add 1 part of alcohol as the rate of drying helping volatilizer to improve binding agent, do not add colouring agent and carry out the painted of binding agent, the modification that modifier carries out binding agent is not added yet, the inorganic salt solution be mixed to form as the binding agent of powder 3D printer, using this inorganic salt solution as binding agent bonding reaction first reactant;
2) adopt and step 1) the corresponding inorganic salts oxide powder of chloride used is as reaction material, namely adopt 30 parts of zinc oxide (ZnO) as the second reactant, second reactant mixes with the diatomite powder of 70 parts of 3D printers, do not add the adjustment that flux carries out powder property, the material that above formed mixed-powder prints as powder 3D;
3) 40 parts of steps 1 are adopted) binding agent prepared and 60 parts of steps 2) mixed-powder prepared carries out powder 3D printing, preserve after printing completes and print part and carry out natural drying in powder 3D printer, or be sent in heated drying case or microwave drying oven and carry out drying; After drying completes, remove non-bond powders, directly can obtain inorganic binder bonding ceramic part;
4) according to material composition needs, carry out high temperature sintering, obtain high strength part, described number is mass fraction.
Adopt the liquid binder agent solution that embodiment 2 scheme obtains, at room temperature, its viscosity <2 × 10
-3pas, viscosity is lower, the binding agent adhesion strength >0.8MPa that zinc chloride inorganic salts zinc oxide is corresponding thereto formed, and bond effect is good, can meet the colored 3D of powder well and print requirement.
Embodiment 3
Based on a powder 3D Method of printing for water-based inorganic binding agent, comprise the following steps:
1) adopt 45 parts of deionized waters to be binding agent solvent, add 50 parts of zinc chloride (ZnCl
2) 40% aqueous solution is as binder component, add 1 part of alcohol as the rate of drying helping volatilizer to improve binding agent, add 3 parts of inorganic inks and carry out the painted of binding agent as colouring agent, add 1 part of thickener carries out binding agent modification as modifier, the inorganic salt solution be mixed to form as the binding agent of powder 3D printer, using this inorganic salt solution as binding agent bonding reaction first reactant;
2) adopt and step 1) the corresponding inorganic salts oxide powder of chloride used is as reaction material, namely adopt 30 parts of zinc oxide (ZnO) as the second reactant, second reactant mixes with the sand powder of 65 parts of 3D printers, add 5 parts of calcium oxide (CaO) carry out powder property adjustment as flux, the material that above formed mixed-powder prints as powder 3D;
3) 40 parts of steps 1 are adopted) binding agent prepared and 60 parts of steps 2) mixed-powder prepared carries out powder 3D printing, preserve after printing completes and print part and carry out natural drying in powder 3D printer, or be sent in heated drying case or microwave drying oven and carry out drying; After drying completes, remove non-bond powders, directly can obtain inorganic binder bonding ceramic part;
4) according to material composition needs, carry out high temperature sintering, obtain high strength part, described number is mass fraction.
Adopt the liquid binder agent solution that embodiment 3 scheme obtains, at room temperature, its viscosity <1.5 × 10
-3pas, viscosity is near pure water; The binding agent adhesion strength >0.5MPa that zinc chloride inorganic salts zinc oxide is corresponding thereto formed, bond effect is better; Add colouring agent, add color, the colored 3D of powder can be realized and print; Add and help volatilizer, volatilization effect is better, adds bond effect; Add flux, the temperature of part at post processing high temperature sintering can be reduced, the colored 3D of powder can be met well and print requirement.
Claims (6)
1., based on a powder 3D Method of printing for water-based inorganic binding agent, it is characterized in that, comprise the following steps:
1) 35-50 part deionized water is adopted to be binding agent solvent, add 50-65 part chloride salt as binder component, adding 0-50 part helps volatilizer to improve the rate of drying of binding agent, add 0-5 part colouring agent and carry out the painted of binding agent, add the modification that 0-5 part modifier carries out binding agent, the inorganic salt solution be mixed to form as the binding agent of powder 3D printer, using this inorganic salt solution as binding agent bonding reaction first reactant;
2) adopt 15-30 part magnesia (MgO) or 15-30 part zinc oxide (ZnO) as the second reactant, second reactant mixes with 70-85 part 3D printer material powder, add the adjustment that 0-10 part flux carries out powder property again, the material that above formed mixed-powder prints as powder 3D;
3) 20-40 part step 1 is adopted) binding agent prepared and 60-80 part step 2) mixed-powder prepared carries out powder 3D printing, preserve after printing completes and print part and carry out natural drying in powder 3D printer, or be sent in heated drying case or microwave drying oven and carry out drying; After drying completes, remove non-bond powders, directly obtain inorganic binder bonding ceramic part;
4) according to material composition needs, carry out high temperature sintering, obtain high strength part;
Described number is mass fraction,
Described chloride salt is magnesium chloride (MgCl
2) or zinc chloride (ZnCl
2) concentration be 5% ~ 70% aqueous solution.
2. a kind of powder 3D Method of printing based on water-based inorganic binding agent according to claim 1, is characterized in that: the described volatilizer that helps is alcohol, acetone or methyl alcohol.
3. a kind of powder 3D Method of printing based on water-based inorganic binding agent according to claim 1, is characterized in that: described colouring agent is organic inks or inorganic ink.
4. a kind of powder 3D Method of printing based on water-based inorganic binding agent according to claim 1, is characterized in that: described modifier is thickener, surface modifier or dispersant.
5. a kind of powder 3D Method of printing based on water-based inorganic binding agent according to claim 1, is characterized in that: described material powder is the powder of pottery, diatomite, sand or gypsum.
6. a kind of powder 3D Method of printing based on water-based inorganic binding agent according to claim 1, is characterized in that: described flux is CaO, K
2o, Na
2o, PbO or B
2o
3.
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| CN201410384306.1A CN104150915B (en) | 2014-08-06 | 2014-08-06 | A kind of powder 3D Method of printing based on water-based inorganic binding agent |
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| CN104923717B (en) * | 2015-06-04 | 2017-03-29 | 宁夏共享化工有限公司 | A kind of non-ferrous metal 3D sand molds printing inorganic binder and preparation method thereof |
| WO2017087546A1 (en) | 2015-11-17 | 2017-05-26 | Impossible Objects, LLC | Additive manufacturing method and apparatus |
| KR102597223B1 (en) * | 2015-11-17 | 2023-11-03 | 임파서블 오브젝츠, 아이앤씨. | Apparatus and process for producing additively manufactured metal matrix composites, and articles of fabrication thereof |
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| US10946592B2 (en) | 2016-09-11 | 2021-03-16 | Impossible Objects, Inc. | Resistive heating-compression method and apparatus for composite-based additive manufacturing |
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| CN106747198B (en) * | 2017-01-11 | 2019-04-19 | 中北大学 | A kind of 3 D-printing rapid prototyping material and preparation method thereof |
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| CN110065134A (en) * | 2019-04-29 | 2019-07-30 | 华侨大学 | A kind of method of 3D printing light emitting-type stone material |
| CN114603156A (en) * | 2022-04-11 | 2022-06-10 | 合肥工业大学智能制造技术研究院 | Method for preparing high-corrosion-resistance magnesium alloy by utilizing ink-jet 3D printing technology |
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