CN104149348A - Powder 3D printing method based on instant inorganic binder - Google Patents

Powder 3D printing method based on instant inorganic binder Download PDF

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Publication number
CN104149348A
CN104149348A CN201410384583.2A CN201410384583A CN104149348A CN 104149348 A CN104149348 A CN 104149348A CN 201410384583 A CN201410384583 A CN 201410384583A CN 104149348 A CN104149348 A CN 104149348A
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powder
printing
instant
binding agent
binder
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CN201410384583.2A
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CN104149348B (en
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田小永
杨春成
李涤尘
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Xian Jiaotong University
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Xian Jiaotong University
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Abstract

The invention discloses a powder 3D printing method based on instant inorganic binder. The powder 3D printing method comprises the following steps: firstly, using deionized water as a binder for a 3D printer, and adding a co-volatile agent, a coloring agent and a modifying agent to form a mixed solution as a binder for powder 3D printing; secondly, using instant sodium silicate as a solid binder, mixing the solid binder with 3D printer raw material powder, and then adding flux to form mixed powder as a material for the powder 3D printing; finally, performing the powder 3D printing by using the prepared binder and the mixed powder, wherein the binder prepared from water and the instant sodium silicate are used as the binder for a powder 3D printing process; as for a powder 3D printing nozzle, a solution with the viscosity close to water is only filled, and the solution is stable in performance, easier to store, unlikely to block the nozzle and free of corrosive effect on the nozzle. By the powder 3D printing method, rapid powder 3D printing of a product with complex structure is achieved, and the environment friendliness of the manufacturing process is ensured; by the powder 3D printing method, the production cost is reduced and the product quality is improved.

Description

A kind of powder 3D Method of printing based on instant inorganic binder
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 instant inorganic binder.
Background technology
Instant flower bulb alkali is a kind of inorganic high-temperature agglomerant conventional in industry, conventional is quick dissolved sodium silicate, while having relatively high expectations, can use instant potassium silicate, if take water as solution, instant flower bulb alkali can be dissolved in water very soon, formation has the binding agent of very strong cementitiousness, and it is widely used in binding agent in foundry casting industry, ceramic industry, coatings industry, insulation material, auxiliary agent in binding agent, acid-resistant cement, quick hardening cement and other cement for welding rod.
It is a kind of 3D Method of printing that utilizes droplet ejection, powder bonding technology that powder 3D prints (3DP).Shower nozzle is under computer control, and according to the information of current minute layer cross section, on one deck dusty material of completing in advance, jet binder, makes part powder bonding selectively, forms one deck cross section thin layers; After one deck has been shaped, the workbench bed thickness that declines, carries out the paving powder of lower one deck, constituency jet binder then, and shaping thin layer also can stick to one with formation of parts simultaneously; Continuous this process of circulation, until part processes; Conventionally the part of formed thereby also needs certain post processing, as dry, sintering etc., thereby obtains last part.
Yet conventional powder 3D prints technique and adopts organic binder bond system more, and mainly there is the shortcoming of following two aspects in this binder system:
1) organic matter binding agent stability is bad, apt to deteriorate, be difficult to long term storage, but also the more storage request of tool, this binding agent also easily corrodes conveyance conduit and printing head simultaneously, after its sex change, may cause the obstruction of shower nozzle, thereby cause technique unstable, have influence on whole powder 3D print procedure;
2) powder 3D prints resulting part and conventionally need to carry out the post processings such as degreasing, calcining, to obtain having the functional features of better mechanical property and precision, but, physics, chemical instability due to organic matter high temperature, adopt the powder 3D of organic matter binding agent to print produced part after degreasing, calcining, goods are difficult to obtain higher density and elevated temperature strength, may produce toxic gas simultaneously.
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 instant inorganic binder, the powder 3D that realization has labyrinth goods prints manufacture fast, also guaranteed the feature of environmental protection of manufacture process, reduce production cost, improved product quality.
In order to achieve the above object, the present invention adopts following technical scheme:
A powder 3D Method of printing based on instant inorganic binder, comprises the following steps:
1) in mass fraction, adopt 50-100 part deionized water as 3D printer binding agent, 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 0-5 part modifier and carry out the modification of binding agent, above mixed solution is printed the binding agent using as powder 3D;
2) adopt the instant flower bulb alkali of 1-10 part powdery as solid binder, mix with 80-99 part 3D printer material powder, then add 0-10 part flux to carry out the adjusting of powder property, the material that above formed mixed-powder is printed as powder 3D;
3) adopt 20-40 part step 1) binding agent and 60-80 part step 2 of preparation) mixed-powder prepared carries out powder 3D printing, after printing completes, preservation is printed part and in powder 3D printer, is carried out natural dryingly, or is sent in heated drying case or microwave drying oven and is dried; After being dried, remove not bond powders, and carry out high temperature sintering, obtain high strength part.
The described volatilizer that helps is alcohol, acetone or methyl alcohol.
Described colouring agent is organic ink or inorganic ink.
Described modifier is conventional thickener, surface modifier or dispersant.
Described instant flower bulb alkali is sodium flower bulb alkali or potassium flower bulb alkali.
Described material powder is the powder of pottery, diatomite, sand or gypsum.
Described flux is calcium oxide (CaO), magnesia (MgO), potassium oxide (K 2o), sodium oxide molybdena (Na 2o), lead oxide (PbO), boron oxide (B 2o 3) or zinc oxide (ZnO).
Advantage of the present invention is to adopt to using the binding agent that water and instant flower bulb alkali forms and as powder 3D, print the binding agent of technique, therefore for powder 3D printing head, only need to pack the solution that viscosity is bordering on water into, its stable performance, be easier to preserve, and the difficult shower nozzle that stops up, to the corrosion-free effect of shower nozzle, can obtain more suitable surface tension, thereby can realize the powder 3D printing manufacture fast with labyrinth goods, also guaranteed the feature of environmental protection of manufacture process, reduce production cost, improved product quality.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1
A powder 3D Method of printing based on instant inorganic binder, comprises the following steps:
1) in mass fraction, adopt 99 parts of deionized waters as 3D printer binding agent, add 1 part of alcohol as helping volatilizer to improve the rate of drying of binding agent, do not add colouring agent and carry out the painted of binding agent, also do not add the modification that modifier carries out binding agent, above mixed solution is printed the binding agent using as powder 3D;
2) adopt 5 parts of powdery sodium flower bulb alkali as solid binder, mix with 95 parts of sand powder as 3D printer material powder, do not add the adjusting that flux carries out powder property, the material that above formed mixed-powder is printed as powder 3D;
3) adopt 40 parts of steps 1) binding agent and 60 parts of steps 2 of preparation) mixed-powder prepared carries out powder 3D printing, after printing completes, preservation is printed part and in powder 3D printer, is carried out natural dryingly, or is sent in heated drying case or microwave drying oven and is dried; After being dried, remove not bond powders, and carry out high temperature sintering, obtain high strength part.
The liquid-containing binder solution that adopts embodiment 1 scheme to obtain, at room temperature, its viscosity <1.5 * 10 -3pas, is similar to pure water, 1 kilogram of sodium flower bulb alkali dissolution time <100s in this solution, and the binder mixtures adhesion strength >0.5MPa of formation, can meet well powder 3D and print requirement.
Embodiment 2
A powder 3D Method of printing based on instant inorganic binder, comprises the following steps:
1) in mass fraction, adopt 98 parts of deionized waters as 3D printer binding agent, add 1 part of alcohol as helping volatilizer to improve the rate of drying of binding agent, add inorganic ink and carry out the painted of binding agent as colouring agent, add 1 part of thickener and as modifier, carry out the modification of binding agent, above mixed solution is printed the binding agent using as powder 3D;
2) adopt 10 parts of powdered potassium flower bulb alkali as solid binder, mix with 90 parts of sand powder as 3D printer material powder, do not add the adjusting that flux carries out powder property, the material that above formed mixed-powder is printed as powder 3D;
3) adopt 40 parts of steps 1) binding agent and 60 parts of steps 2 of preparation) mixed-powder prepared carries out powder 3D printing, after printing completes, preservation is printed part and in powder 3D printer, is carried out natural dryingly, or is sent in heated drying case or microwave drying oven and is dried; After being dried, remove not bond powders, and carry out high temperature sintering, obtain high strength part.
The liquid-containing binder solution that adopts embodiment 2 schemes to obtain, at room temperature, its viscosity <2 * 10 -3pas, 1 kilogram of potassium flower bulb alkali dissolution time <180s in this solution, the binder mixtures adhesion strength >0.8MPa forming, viscosity is still lower, simultaneously, bond effect increases greatly, has also increased color, can meet well the colored 3D of powder and print requirement.
Embodiment 3
A powder 3D Method of printing based on instant inorganic binder, comprises the following steps:
1) in mass fraction, adopt 79 parts of deionized waters as 3D printer binding agent, add 20 parts of alcohol as helping volatilizer to improve the rate of drying of binding agent, add 5 parts of inorganic inks and carry out the painted of binding agent as colouring agent, add 1 part of thickener and as modifier, carry out the modification of binding agent, above mixed solution is printed the binding agent using as powder 3D;
2) adopt 10 parts of powdery sodium flower bulb alkali as solid binder, mix with 85 parts of diatomite powders as 3D printer material powder, add 5 parts of calcium oxide (CaO) and as flux, carry out the adjusting of powder property, the material that above formed mixed-powder is printed as powder 3D;
3) adopt 40 parts of steps 1) binding agent and 60 parts of steps 2 of preparation) mixed-powder prepared carries out powder 3D printing, after printing completes, preservation is printed part and in powder 3D printer, is carried out natural dryingly, or is sent in heated drying case or microwave drying oven and is dried; After being dried, remove not bond powders, and carry out high temperature sintering, obtain high strength part.
The liquid-containing binder solution that adopts embodiment 3 schemes to obtain, at room temperature, its viscosity <2 * 10 -3pas, 1 kilogram of sodium flower bulb alkali dissolution time <180s in this solution, the binder mixtures adhesion strength >0.7MPa forming, viscosity is still lower, simultaneously, volatilization effect is better, increased bond effect, can meet well powder 3D and print requirement, and, owing to having added flux, can reduce part in the temperature of post processing high temperature sintering.

Claims (7)

1. the powder 3D Method of printing based on instant inorganic binder, is characterized in that, comprises the following steps:
1) in mass fraction, adopt 50-100 part deionized water as 3D printer binding agent, 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 0-5 part modifier and carry out the modification of binding agent, above mixed solution is printed the binding agent using as powder 3D;
2) adopt the instant flower bulb alkali of 1-10 part powdery as solid binder, mix with 80-99 part 3D printer material powder, then add 0-10 part flux to carry out the adjusting of powder property, the material that above formed mixed-powder is printed as powder 3D;
3) adopt 20-40 part step 1) binding agent and 60-80 part step 2 of preparation) mixed-powder prepared carries out powder 3D printing, after printing completes, preservation is printed part and in powder 3D printer, is carried out natural dryingly, or is sent in heated drying case or microwave drying oven and is dried; After being dried, remove not bond powders, and carry out high temperature sintering, obtain high strength part.
2. a kind of powder 3D Method of printing based on instant inorganic binder 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 instant inorganic binder according to claim 1, is characterized in that: described colouring agent is organic ink or inorganic ink.
4. a kind of powder 3D Method of printing based on instant inorganic binder according to claim 1, is characterized in that: described modifier is conventional thickener, surface modifier or dispersant.
5. a kind of powder 3D Method of printing based on instant inorganic binder according to claim 1, is characterized in that: described instant flower bulb alkali is sodium flower bulb alkali or potassium flower bulb alkali.
6. a kind of powder 3D Method of printing based on instant inorganic binder according to claim 1, is characterized in that: described material powder is the powder of pottery, diatomite, sand or gypsum.
7. a kind of powder 3D Method of printing based on instant inorganic binder according to claim 1, is characterized in that: described flux is calcium oxide (CaO), magnesia (MgO), potassium oxide (K 2o), sodium oxide molybdena (Na 2o), lead oxide (PbO), boron oxide (B 2o 3) or zinc oxide (ZnO).
CN201410384583.2A 2014-08-06 2014-08-06 A kind of powder 3D Method of printing based on instant inorganic binder Active CN104149348B (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105598856A (en) * 2015-12-29 2016-05-25 河南广度超硬材料有限公司 Abrasive tool bond and preparation method thereof
CN106810268A (en) * 2017-02-20 2017-06-09 醴陵市陶瓷3D打印研究所 A kind of ceramic 3D printing material based on selective laser sintering and preparation method thereof
CN106945149A (en) * 2017-03-08 2017-07-14 龙泉市金宏瓷业有限公司 A kind of ceramic body 3D printing technique
CN107674369A (en) * 2017-10-26 2018-02-09 西安国宏天易智能科技有限公司 A kind of inorganic binder of 3D printing and preparation method thereof
CN108285321A (en) * 2018-01-17 2018-07-17 龙泉市金宏瓷业有限公司 A kind of 3D printing ceramics and preparation method thereof based on spontaneous heat curing techniques
CN108285320A (en) * 2018-01-17 2018-07-17 龙泉市金宏瓷业有限公司 A kind of spontaneous heat cure ceramic slurry and preparation method thereof for 3D printing
CN112225530A (en) * 2020-10-10 2021-01-15 上海交通大学 Technical method for improving compactness of lunar soil 3D printing energy storage block
CN112605336A (en) * 2020-11-30 2021-04-06 襄阳仁创铸造材料有限公司 Preparation method and application of reclaimed sand for casting cold core

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US5660621A (en) * 1995-12-29 1997-08-26 Massachusetts Institute Of Technology Binder composition for use in three dimensional printing
US20080187711A1 (en) * 2007-01-10 2008-08-07 Z Corporation Three-Dimensional Printing Material System With Improved Color, Article Performance, and Ease of Use
US8568649B1 (en) * 2007-03-20 2013-10-29 Bowling Green State University Three-dimensional printer, ceramic article and method of manufacture
CN103936392A (en) * 2014-03-13 2014-07-23 济南大学 Preparation method of 3D printing inorganic powder molding material

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US5660621A (en) * 1995-12-29 1997-08-26 Massachusetts Institute Of Technology Binder composition for use in three dimensional printing
US20080187711A1 (en) * 2007-01-10 2008-08-07 Z Corporation Three-Dimensional Printing Material System With Improved Color, Article Performance, and Ease of Use
US8568649B1 (en) * 2007-03-20 2013-10-29 Bowling Green State University Three-dimensional printer, ceramic article and method of manufacture
CN103936392A (en) * 2014-03-13 2014-07-23 济南大学 Preparation method of 3D printing inorganic powder molding material

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105598856A (en) * 2015-12-29 2016-05-25 河南广度超硬材料有限公司 Abrasive tool bond and preparation method thereof
CN106810268A (en) * 2017-02-20 2017-06-09 醴陵市陶瓷3D打印研究所 A kind of ceramic 3D printing material based on selective laser sintering and preparation method thereof
CN106945149A (en) * 2017-03-08 2017-07-14 龙泉市金宏瓷业有限公司 A kind of ceramic body 3D printing technique
CN107674369A (en) * 2017-10-26 2018-02-09 西安国宏天易智能科技有限公司 A kind of inorganic binder of 3D printing and preparation method thereof
CN108285321A (en) * 2018-01-17 2018-07-17 龙泉市金宏瓷业有限公司 A kind of 3D printing ceramics and preparation method thereof based on spontaneous heat curing techniques
CN108285320A (en) * 2018-01-17 2018-07-17 龙泉市金宏瓷业有限公司 A kind of spontaneous heat cure ceramic slurry and preparation method thereof for 3D printing
CN108285320B (en) * 2018-01-17 2020-10-13 龙泉市金宏瓷业有限公司 Self-heating curing ceramic slurry for 3D printing and preparation method thereof
CN108285321B (en) * 2018-01-17 2020-10-13 龙泉市金宏瓷业有限公司 3D printing ceramic based on self-heating curing technology and preparation method thereof
CN112225530A (en) * 2020-10-10 2021-01-15 上海交通大学 Technical method for improving compactness of lunar soil 3D printing energy storage block
CN112605336A (en) * 2020-11-30 2021-04-06 襄阳仁创铸造材料有限公司 Preparation method and application of reclaimed sand for casting cold core

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