CN107417299A - A kind of aftertreatment technology of 3D printing plastering - Google Patents

A kind of aftertreatment technology of 3D printing plastering Download PDF

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Publication number
CN107417299A
CN107417299A CN201710801108.4A CN201710801108A CN107417299A CN 107417299 A CN107417299 A CN 107417299A CN 201710801108 A CN201710801108 A CN 201710801108A CN 107417299 A CN107417299 A CN 107417299A
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CN
China
Prior art keywords
printing
plastering
product
aftertreatment technology
gypsum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201710801108.4A
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Chinese (zh)
Other versions
CN107417299B (en
Inventor
唐明亮
叶玉秋
沈晓冬
汤兵
郑海
黄扬洋
董旭阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Mint New Mstar Technology Ltd
Nanjing Tech University
Original Assignee
Jiangsu Mint New Mstar Technology Ltd
Nanjing Tech University
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Priority to CN201710801108.4A priority Critical patent/CN107417299B/en
Publication of CN107417299A publication Critical patent/CN107417299A/en
Application granted granted Critical
Publication of CN107417299B publication Critical patent/CN107417299B/en
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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/60After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
    • C04B41/61Coating or impregnation
    • C04B41/65Coating or impregnation with inorganic materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE 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
    • B33Y80/00Products made by additive manufacturing
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5007Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing
    • C04B41/5009Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing containing nitrogen in the anion, e.g. nitrites
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5007Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing
    • C04B41/5011Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing containing halogen in the anion
    • C04B41/5012Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing containing halogen in the anion chlorides
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5007Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing
    • C04B41/5014Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing containing sulfur in the anion, e.g. sulfides

Abstract

The present invention relates to a kind of aftertreatment technology of 3D printing plastering, by the plastering of binding agent injection 3D printing shaping, the techniques such as solidification, microwave rapid draing are impregnated by solution, the intensity of the finished product of acquisition is enhanced about more than once compared with traditional drying handling process, finishing time is also greatly lowered, and solves the problems such as 3D printing gypsum poor mechanical property in existing process, post processing cost are high, drying time is long.The handling process of the present invention, improves the mechanical property of 3D printing gypsum, reduces post processing cost, shorten finishing time.

Description

A kind of aftertreatment technology of 3D printing plastering
Technical field
The present invention relates to 3D printing technique field, more particularly to a kind of 3D printing stone with binding agent injection molding (3DP) The aftertreatment technology of cream product.
Background technology
3D printing technique (also known as increases material manufacturing technology) is a kind of using material addition as essential characteristic, directly to manufacture zero Part is target, has Rapid Manufacturing Technology with broad prospects for development, is described as a manufacturing revolution.3D is sprayed with binding agent The plastering of printing technology printing is model, the main technique of mould printing due to that can realize full-color printing.At present, Traditional binding agent injection 3D printing plastering mainly includes, the process such as product printing, drying and curing agent spraying.The technique Three problems are primarily present, when, because water content is very low in the binding agent of print procedure injection, cause in 3D printing land plaster Semi-hydrated gypsum be only capable of part aquation, the structure of gypsum printing product relies primarily on the bonding of binding agent to maintain, mechanical property It is low, it is easily broken less than 5MPa;Second, at present, gypsum 3D printing system stoving process is toasted using heat-generating pipe or drum heat Wind is dried, and not only drying efficiency is low and is easily ftractureed when drying heavy wall printing product;Third, dried to improve The mechanical property of product after dry, one layer of polymeric consolidator can be smeared in product surface.The price of general curing agent is more than 1000 Member/L, the cost of 3D printing plastering is increased considerably.Also, curing agent only enhances the surface mechanical properties of product, Product internal intensity is still very low.
Problem above, seriously constrain the popularization and application of gypsum 3D printing technique.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of efficient aftertreatment technology of 3D printing plastering, to carry The mechanical property of high 3D printing plastering, shorten finishing time, reduce post processing cost.
To achieve the above object, the present invention provides following technical scheme:
A kind of aftertreatment technology of 3D printing plastering, the plastering of binding agent injection 3D printing shaping is soaked in Promote rehydration solution 5-30 minutes, be put into microwave drying oven after taking-up and be dried, get product.
Further, the rush rehydration solution is calcium chloride, calcium nitrate, sodium sulphate, aluminum sulfate, magnesium sulfate etc. containing a large amount of Ca2+Or SO4 2-Solution one kind, Ca2+Or SO4 2-Concentration >=0.2mol/L.
Further, the setting temperature of the microwave drying oven is 60-110 DEG C.
Beneficial effect using above technical scheme is:A kind of 3D printing plastering aftertreatment technology of the present invention, mainly The mechanical property of 3D printing gypsum is improved by two aspects, reduces post processing cost, shortens processing time.First, pass through 3D printing product is being contained into high concentration Ca2+Or SO4 2-Rush rehydration solution in time of infusion, 3D printing product with it is molten During liquid contacts, unhydrated semi-hydrated gypsum powder material is in high concentration Ca in product2+Or SO4 2-In the presence of, produce very Big degree of supersaturation, fast nucleation and the growth of calcium sulphate dihydrate crystal can be promoted, so that most of in printing product Unhydrated semi-hydrated gypsum fast hydration, aquation form interlaced between a large amount of dihydrate gypsum crystals and are filled in product Space, form a stabilization, fine and close microstructure (see Fig. 2) so that Mechanical Properties of Products increases considerably;Second, microwave Heat drying mode, uniform, the rapid draing of heavy wall, labyrinth 3D printing plastering can be realized, be greatly shortened and beat Print the cycle.Also, in gypsum hole in calcium sulfate saturated solution moisture rapid evaporation, calcium sulfate concentration quickly carries in solution Height, forms great degree of supersaturation, promotes the increase of dihydrate gypsum crystal quantity and the raising of growth rate again, is advantageous to make The lifting of product mechanical property.
Brief description of the drawings
Fig. 1 is the scanning electron microscope (SEM) photograph of the 3D printing plastering that direct forced air drying obtains after the product of embodiment 1 prints;
Fig. 2 is by immersion treatment and with the 3D printing plastering of microwave drying acquisition after the product of embodiment 1 prints Scanning electron microscope (SEM) photograph.
Embodiment
Describe technical scheme in detail with reference to the accompanying drawings and examples.
Embodiment 1
The 3D printing plastering of 3D printing technological forming will be sprayed with binding agent, be soaked in 3mol/L calcium chloride solution 5 minutes, after taking-up, with 80 DEG C of microwave rapid draing 10 minutes, the 3D printing plastering after being handled.
Fig. 1 is the scanning electron microscope (SEM) photograph of direct 3 hours 3D printing plasterings obtained of forced air drying after product printing, is dried 80 DEG C or so of temperature;Fig. 2 is the scanning electron microscope (SEM) photograph of solution immersion treatment and the 3D printing plastering obtained with microwave drying.By The article construction that Fig. 1 and Fig. 2 can be seen that by solution impregnation and microwave drying is closely knit, and porosity substantially reduces.
The compression strength for the 3D printing plastering that tradition post processing obtains is 4.7MPa, at the method using embodiment 1 The compression strength of 3D printing plastering after reason is 11.7MPa.Finishing time was shorten to 15 minutes by original 3 hours, Efficiency is significantly lifted.
Embodiment 2
The 3D printing plastering of 3D printing technological forming will be sprayed with binding agent, be soaked in the nitre that concentration is 2.5mol/L Sour calcium solution is after 10 minutes, takes out with 100 DEG C of microwave rapid draing 5 minutes, obtains the 3D printing stone that compression strength is 10.2MPa Cream product.Finishing time is shorten to 15 minutes.The compression strength of 3D printing plastering that tradition post processing obtains is 4.7Mpa, finishing time are 3 hours (80 DEG C of drying temperature).
Embodiment 3
The 3D printing plastering of 3D printing technological forming will be sprayed with binding agent, be soaked in the sulphur that concentration is 1.0mol/L Acid sodium solution 25 minutes, after taking-up, with 60 DEG C of microwave rapid draing 30 minutes, obtain the 3D printing stone that compression strength is 9.9MPa Cream product, finishing time are shorten to 55 minutes.The compression strength of 3D printing plastering that tradition post processing obtains is 4.7Mpa, finishing time are 3 hours (80 DEG C of drying temperature).
Embodiment 4
The 3D printing plastering of 3D printing technological forming will be sprayed with binding agent, the aluminum sulfate for being soaked in 0.5mol/L is molten Liquid 15 minutes, after taking-up, with 110 DEG C of microwave rapid draing 5 minutes, obtain the 3D printing gypsum system that compression strength is 10.9MPa Product, finishing time are shorten to 20 minutes.The compression strength for the 3D printing plastering that tradition post processing obtains is 4.7Mpa, after Processing time is 3 hours (80 DEG C of drying temperature).
Embodiment 5
The 3D printing plastering of 3D printing technological forming will be sprayed with binding agent, be soaked in the sulphur that concentration is 0.2mol/L Sour magnesium solution is after 30 minutes, takes out the 3D printing gypsum for 80 DEG C of microwave rapid draing 10 minutes, obtaining compression strength 8.3MPa Product, finishing time are shorten to 40 minutes.The compression strength for the 3D printing plastering that tradition post processing obtains is 4.7Mpa, Finishing time is 3 hours (80 DEG C of drying temperature).
Described above is only the preferred embodiment of the present invention, it is noted that is come for one of ordinary skill in the art Say, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention's Protection domain.

Claims (3)

1. a kind of aftertreatment technology of 3D printing plastering, it is characterised in that by the gypsum of binding agent injection 3D printing shaping Product, which is soaked in, promotees rehydration solution 5-30 minutes, is put into microwave drying oven after taking-up and is dried, gets product.
2. the aftertreatment technology of 3D printing plastering as claimed in claim 1, it is characterised in that it is described rush rehydration solution be Calcium chloride, calcium nitrate, sodium sulphate, one kind of aluminum sulfate or Adlerika, Ca in solution2+Or SO4 2-Concentration >=0.2mol/L.
3. the aftertreatment technology of 3D printing plastering as claimed in claim 1, it is characterised in that the microwave drying oven It is 60-110 DEG C to set temperature.
CN201710801108.4A 2017-09-07 2017-09-07 A kind of aftertreatment technology of 3D printing plastering Active CN107417299B (en)

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CN201710801108.4A CN107417299B (en) 2017-09-07 2017-09-07 A kind of aftertreatment technology of 3D printing plastering

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Application Number Priority Date Filing Date Title
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CN107417299B CN107417299B (en) 2019-10-22

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5767086A (en) * 1980-10-09 1982-04-23 Toppan Printing Co Ltd Manufacture of stereo-dressed inorganic board
US20110156301A1 (en) * 2007-02-22 2011-06-30 Z Corporation Three dimensional printing material system and method using plasticizer-assisted sintering
CN103707388A (en) * 2013-12-23 2014-04-09 宁波市鄞州润物工业设计有限公司 Three-dimensional printing method
CN103709917A (en) * 2013-12-10 2014-04-09 华南理工大学 Post-processing liquid for three-dimensional printing device, and preparation method and application thereof
CN105694791A (en) * 2016-02-01 2016-06-22 南京师范大学 Adhesive of photosensitive epoxy resin composition for gypsum material 3D printing and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5767086A (en) * 1980-10-09 1982-04-23 Toppan Printing Co Ltd Manufacture of stereo-dressed inorganic board
US20110156301A1 (en) * 2007-02-22 2011-06-30 Z Corporation Three dimensional printing material system and method using plasticizer-assisted sintering
CN103709917A (en) * 2013-12-10 2014-04-09 华南理工大学 Post-processing liquid for three-dimensional printing device, and preparation method and application thereof
CN103707388A (en) * 2013-12-23 2014-04-09 宁波市鄞州润物工业设计有限公司 Three-dimensional printing method
CN105694791A (en) * 2016-02-01 2016-06-22 南京师范大学 Adhesive of photosensitive epoxy resin composition for gypsum material 3D printing and preparation method thereof

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