CN108484131A - Alumina ceramic slurry, preparation method and application suitable for 3D printing - Google Patents
Alumina ceramic slurry, preparation method and application suitable for 3D printing Download PDFInfo
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- CN108484131A CN108484131A CN201810104663.6A CN201810104663A CN108484131A CN 108484131 A CN108484131 A CN 108484131A CN 201810104663 A CN201810104663 A CN 201810104663A CN 108484131 A CN108484131 A CN 108484131A
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- ceramic slurry
- printing
- alumina ceramic
- aluminium
- oxide
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 239000002002 slurry Substances 0.000 title claims abstract description 60
- 238000010146 3D printing Methods 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims description 11
- 239000000919 ceramic Substances 0.000 claims abstract description 60
- 239000000843 powder Substances 0.000 claims abstract description 33
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 28
- RGPUVZXXZFNFBF-UHFFFAOYSA-K diphosphonooxyalumanyl dihydrogen phosphate Chemical compound [Al+3].OP(O)([O-])=O.OP(O)([O-])=O.OP(O)([O-])=O RGPUVZXXZFNFBF-UHFFFAOYSA-K 0.000 claims abstract description 12
- 239000002270 dispersing agent Substances 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 27
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 18
- 238000000498 ball milling Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 15
- 230000032683 aging Effects 0.000 claims description 14
- 230000002378 acidificating effect Effects 0.000 claims description 13
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- 235000011187 glycerol Nutrition 0.000 claims description 9
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 7
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 6
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 6
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 6
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 229960004643 cupric oxide Drugs 0.000 claims description 4
- 239000005543 nano-size silicon particle Substances 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 229940068918 polyethylene glycol 400 Drugs 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 239000003292 glue Substances 0.000 claims 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052698 phosphorus Inorganic materials 0.000 claims 1
- 239000011574 phosphorus Substances 0.000 claims 1
- 239000010936 titanium Substances 0.000 claims 1
- 229910052719 titanium Inorganic materials 0.000 claims 1
- 239000004014 plasticizer Substances 0.000 abstract description 11
- 238000005245 sintering Methods 0.000 abstract description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000004927 clay Substances 0.000 description 5
- 238000007639 printing Methods 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000007641 inkjet printing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000000110 selective laser sintering Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004375 Dextrin Substances 0.000 description 1
- 229920001353 Dextrin Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 208000036142 Viral infection Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000462 isostatic pressing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
-
- 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
-
- 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
-
- 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
- B33Y80/00—Products made by additive manufacturing
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/62605—Treating the starting powders individually or as mixtures
- C04B35/6261—Milling
- C04B35/62615—High energy or reactive ball milling
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
- C04B35/6306—Binders based on phosphoric acids or phosphates
- C04B35/6309—Aluminium phosphates
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
- C04B2235/3218—Aluminium (oxy)hydroxides, e.g. boehmite, gibbsite, alumina sol
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/447—Phosphates or phosphites, e.g. orthophosphate, hypophosphite
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Producing Shaped Articles From Materials (AREA)
Abstract
The present invention provides a kind of alumina ceramic slurry suitable for 3D printing, includes the raw material of following mass percent：Ceramic powder 70%~80%；Aluminum sol 15%~25%；Aluminium dihydrogen phosphate 2%~5%；Dispersant 0.3%~0.5%；Wherein, the ceramic powder includes aluminium oxide.It applies the technical scheme of the present invention, big, the pollution environment with plasticiser dosage needed for solution in the prior art 3D printing ceramic slurry, and the technical problem that the intensity of the ceramic part prepared is low, required sintering temperature is high.
Description
Technical field
The invention belongs to function ceramics preparing technical fields, and in particular to a kind of function ceramics material suitable for 3D printing
Slurry, preparation method and application, more particularly to a kind of alumina ceramic slurry suitable for 3D printing, preparation method and application.
Background technology
Aluminium oxide ceramics has that high mechanical strength, resistivity are high, electrical insulating property is good, fusing point is high, corrosion resistance is good, chemical steady
The qualitative performances such as excellent, are widely used in machinery, electron electric power, chemical industry, medicine, building and other high-tech areas.Preparation side
Method mainly has：Extrusion molding, dry-pressing formed, injection moulding, isostatic pressing, tape casting, injection forming, gel casting forming
Deng.When these techniques prepare component, the mold with respective shapes need to be prepared according to the shape of component, if the structure of component is slightly
Variation, it is necessary to prepare mold again or need to be machined sample, thus increase manufacturing cost.
With the development of industry, these conventional molding process have been unable to meet the requirement of certain special dimensions.With it is traditional
" subtracting material " manufacturing technology is different, and 3D printing ceramics have the advantages such as short fabrication cycle, at low cost, easy making process, operability be strong,
3D printing at present prepares Al2O3Method mainly selective laser sintering technology, Stereolithography technology, the inkjet printing of ceramics
Forming technique, 3 D-printing forming technique.Wherein Selective Laser Sintering has laser power height, sintering needed for processing difficult
The shortcomings of degree is big, high energy consumption；Photosensitive resin mixing liquid used in Stereolithography technology is the virose Irr. M of tool, and
It needs to be kept in dark place；Inkjet printing forming technique then has solid content low, micro- directionality and shape, the concentration consistency of ink
Cannot accurately control, print head block the shortcomings of, 3 D-printing forming technique is to prepare at present due to the advantages such as at low cost, nontoxic
The optimal printing technique of aluminium oxide ceramics mostly uses dextrin (Tubio C using the slurry of 3 D-printing forming technique at present
R, RSC Advances 6 (3), 2016), polyethylene glycol (Liu Jiyuan, Shanghai University Of Electric Power's journal, 31 (4)：2015), clay etc.
For plasticiser, plasticiser dosage needed for such ceramic slurry is big, pollution environment, and the ceramic part prepared has that intensity is low, burns
The shortcomings of junction temperature is high.
Invention content
The alumina ceramic slurry that the present invention provides a kind of suitable for 3D printing, preparation method and application, can solve
Plasticiser dosage needed for 3D printing ceramic slurry is big in the prior art, pollution environment, and the intensity of the ceramic part prepared it is low,
The high technical problem of required sintering temperature.
Technical solution of the invention is：
On the one hand, the present invention provides a kind of alumina ceramic slurry suitable for 3D printing, including following mass percent
Raw material：
Wherein, the ceramic powder includes aluminium oxide.
Further, in the present invention, the Aluminum sol be acidic aluminum sol, the acidic aluminum sol a concentration of 10~
40wt.%；The pH value of the acidic aluminum sol is 2~5.
Further, in the present invention, a concentration of 10~15wt.% of the phosphoric acid hydrogen two aluminium, pH value are 2~3.
Further, in some embodiments, in the ceramic powder, except alumina, the ceramic powder is also
Including nano-oxide, the nano-scale oxide is in nano silicon dioxide, nano-titanium dioxide and nano cupric oxide
At least one.
Further, in some embodiments, in the ceramic powder, in terms of mass parts, the nano-oxide and
The accounting of aluminium oxide is respectively 5%~15% and 85%~95%.
Further, in some embodiments, the grain size of the aluminium oxide is 0.5~2 μm；The nano-oxide
Grain size is 20~80nm.
Further, in some embodiments, the dispersant is selected from glycerine, carboxymethyl cellulose 1750, poly- second two
At least one of alcohol 400, polyvinyl alcohol 2000.
On the other hand, this law owes the preparation method for providing the alumina ceramic slurry suitable for 3D printing, passes through
Following steps are realized:
The ceramic powder of above-mentioned formula ratio, Aluminum sol, aluminium dihydrogen phosphate and dispersant are uniformly mixed and are carried out successively
Ball milling, the aging rear ceramic slurry for obtaining certain plasticity and mobility.
Further, in some embodiments, the Ball-milling Time be 20~30min, the aging time be 24~
48h。
Further, in the present invention, the plasticity and mobility that preparation-obtained ceramic slurry has, can be in certain model
Regulated and controled by changing the concentration of the Aluminum sol and aluminium dihydrogen phosphate in enclosing, to meet different application demands.
Further, the present invention also provides the applications of the alumina ceramic slurry suitable for 3D printing, for example, can adopt
With 3D printing technique by the alumina ceramic slurry straight forming product, such as ceramic component；Or by the aluminium oxide ceramics material
Prepared by slurry is shaped to aluminium oxide increasing material, and then ceramic material is made, and screw extrusion molding such as can be used and prepare aluminium oxide increasing material.
It applies the technical scheme of the present invention, provides a kind of alumina ceramic slurry suitable for 3D printing, preparation method
And application, existing to be suitable for plasticiser used in aluminium oxide 3D printing slurry be mostly clay or organic species, such plasticizing
Agent by absorption to lean property particle and hydration come the interaction between reinforcing particle, to realize that slurry is modified.In order to
Good plasticizing effect is obtained, the dosage of these plasticisers is often larger, adds itself higher viscosity, causes slurry
Solid content cannot be promoted further, increase the difficulty of ceramic follow-up sintering；In addition, organic plasticiser may be deposited in burn off
In problem of environmental pollution, residue can also reduce the functional characteristic of ceramics, and clay class plasticiser mineral associations are complicated, and composition is not
, it is larger that the nature differences such as plasticity, thixotropy, mating type, shrinkage, refractoriness are shown as, thus each ceramic producing region its
There are difference for ceramic batch formula and technique.Although the measures such as ball milling, optimization size grading, aging can to a certain extent can
The plasticity of ceramic slurry is improved, but the effect of plasticiser cannot be substituted.
The present invention then by cementation between Aluminum sol and the gel plasticizing process reinforcing particle of aluminium dihydrogen phosphate and
The water retention property of nano-ceramic powder improves existing suitable for aluminium oxide 3D so as to improve the plasticity and mobility of ceramic slurry
The deficiency of slurry is printed, dosage is substantially reduced compared to existing plasticiser, problem of environmental pollution is also not present, and reduce pottery
The sintering temperature of porcelain part, prepared ceramic part have higher intensity.Wherein, the present invention uses faintly acid Aluminum sol,
Itself carries charge, can be adsorbed on the ceramics such as aluminium oxide, nano silicon dioxide, nano-titanium dioxide, nano-cupric oxide powder
Powder surface；Then be added aluminium dihydrogen phosphate, polymerisation can occur for the sol particle of dispersion, gel network make ceramic particle it
Between be cross-linked with each other, make ceramic slurry plasticity improve.It is worth noting that, ball milling is needed in slurry pH is adjusted, to ensure particle
Crosslinked uniformity, and the addition of nano silicon oxide, nano cupric oxide, nano-titanium oxide not only changes the water-retaining property of slurry also
The sintering temperature that aluminium oxide can be reduced improves the performances such as the power, heat, electricity of aluminium oxide ceramics.In extrusion pressure 6kg/cm2Blanking
Slurry can be squeezed out from the nozzle of diameter 1mm, have good printing shaping performance.
Specific implementation mode
Specific embodiments of the present invention are described in detail below.In the following description, unrestricted for explanation
Property purpose, elaborate detail, with help be apparent from the present invention.It will be apparent however, to one skilled in the art that it is aobvious and
It is clear to, the present invention can also be put into practice in the other embodiments departing from these details.
Embodiment 1
First, according to quality proportioning glycerine 0.3%, polyvinyl alcohol 2000 is 0.1%, and the proportioning of ceramic powder 76.8% adds
Enter to mass fraction 20%, pH 3, a concentration of 20% acidic aluminum sol in, wherein ceramic powder includes the two of 20~80nm
Silica is 5%, and 0.5~2 μm of aluminium oxide is 95%；Then add mass fraction be 2.8%, it is pH 2.5, a concentration of
12% aluminium dihydrogen phosphate ball milling 20min causes the colloidal sol polymerisation of part and improves homogeneity of slurry；Finally, aging 48h,
The alumina slurry and its product properties that the present embodiment obtains are as shown in table 1.
Embodiment 2
First, according to quality proportioning glycerine 0.2%, the proportioning of polyethylene glycol 400 0.3%, ceramic powder 75% is added
To mass fraction 21%, pH 2.8, a concentration of 25% acidic aluminum sol in, wherein ceramic powder includes the two of 20~80nm
Silica 10%, 0.5~2 μm of aluminium oxide 90%；Then add mass fraction be 3.5%, pH 2, a concentration of 15%
Aluminium dihydrogen phosphate ball milling 30min causes the colloidal sol polymerisation of part and improves homogeneity of slurry；Finally, aging 36h, this implementation
The alumina slurry and its product properties that example obtains are as shown in table 1.
Embodiment 3
First, according to quality proportioning glycerine 0.2%, carboxymethyl cellulose 1750 is 0.2%, and ceramic powder 75.9% is matched
Than being added in mass fraction 20%, pH 4, a concentration of by 15% acidic aluminum sol, wherein ceramic powder includes 20~80nm
Silica 25%, 0.5~1 μm of aluminium oxide 75%；Then add that mass fraction is 3.7%, pH is 2.2 a concentration of
15% aluminium dihydrogen phosphate ball milling 10min causes the colloidal sol polymerisation of part and improves homogeneity of slurry；Finally, aging 48h,
The alumina slurry and its product properties that the present embodiment obtains are as shown in table 1.
Embodiment 4
First, according to quality proportioning glycerine 0.1%, carboxymethyl cellulose 1750 is 0.3%, the proportioning of ceramic powder 76%
It is added in the acidic aluminum sol of mass fraction 20%, pH 3, a concentration of 35%, wherein ceramic powder includes 20~80nm's
Silica 20%, 0.5~1 μm of aluminium oxide 80%；Then add mass fraction be 3.6%, it is pH 2.2, a concentration of
14% aluminium dihydrogen phosphate ball milling 20min causes the colloidal sol polymerisation of part and improves homogeneity of slurry；Finally, it is aging for 24 hours,
The alumina slurry and its product properties that the present embodiment obtains are as shown in table 1.
Embodiment 5
First, according to quality proportioning glycerine 0.1%, carboxymethyl cellulose 1750 is 0.3%, and ceramic powder 75.1% is matched
Than being added in mass fraction 21%, pH 2.8, a concentration of by 25% acidic aluminum sol, wherein ceramic powder include 20~
The silica 1 0% of 80nm, 0.5~2 μm of aluminium oxide 90%；Then add mass fraction be 3.5%, it is pH 2.3, dense
Degree causes the colloidal sol polymerisation of part for 15% aluminium dihydrogen phosphate ball milling 30min and improves homogeneity of slurry；Finally, aging
36h, the alumina slurry and its product properties that the present embodiment obtains are as shown in table 1.
Embodiment 6
First, it is 0.4% according to quality proportioning polyethylene glycol 400, the proportioning of ceramic powder 75.9% is added to quality point
Number 20%, pH 4, a concentration of 15% acidic aluminum sol in, wherein ceramic powder includes the silica of 20~80 nm
25%, 0.5~2 μm of aluminium oxide 75%；Then add mass fraction be 3.7%, the phosphoric acid of pH 2.1, a concentration of 14%
Aluminum dihydrogen ball milling 10min causes the colloidal sol polymerisation of part and improves homogeneity of slurry；Finally, it is aging for 24 hours, the present embodiment obtains
The alumina slurry and its product properties arrived is as shown in table 1.
Embodiment 7
First, according to quality proportioning glycerine 0.1%, carboxymethyl cellulose 1750 is 0.4%, the proportioning of ceramic powder 70%
It is added in the acidic aluminum sol of mass fraction 24.5%, pH 5, a concentration of 10%, wherein ceramic powder includes 20~80nm
Silica 1 5%, 0.5~2 μm of aluminium oxide 85%；Then add mass fraction be 5%, pH 2, a concentration of 15%
Aluminium dihydrogen phosphate ball milling 25min cause the colloidal sol polymerisation of part and improve homogeneity of slurry；Finally, aging 48h, this reality
It applies alumina slurry that example obtains and its product properties is as shown in table 1.
Comparative example 1
First, according to quality proportioning glycerine 3%, polyvinyl alcohol 2000 is 8%, and the proportioning of ceramic powder 69% is added to matter
In the deionized water for measuring score 20%, wherein ceramic powder includes the silica 5% of 20~80nm, 0.5~2 μm of oxidation
Aluminium 95%；Ball milling 20min improves homogeneity of slurry；Finally, aging 48h.The alumina slurry and its product that the comparative example obtains
Performance is as shown in table 1.
Comparative example 2
First, according to quality proportioning clay 35%, the proportioning of ceramic powder 35% be added to mass fraction 30% go from
In sub- water, wherein ceramic powder includes the silica 1 0% of 20~80nm, 0.5~2 μm of aluminium oxide 90%；Ball milling 30min
Improve homogeneity of slurry；Finally, aging 36h, alumina slurry and its product properties that the present embodiment obtains and as shown in table 1.
1 embodiment and comparative example the performance test results of table
It is ceramic top after alumina slurry sintering provided by the invention suitable for 3D printing as can be seen from Table 1
Between bond strength up to 80Mpa, and by being suitable for 3D printing from the point of view of plasticity index；And comparative example 1 then shows：Plasticity index
In the case of identical, organic matter additive amount is more, and it is solvent that Ludox, which is not used, and sintered interfacial bonding strength is poor；Together
Sample, comparative example 2 is plasticiser using clay, and dosage is larger, and final interfacial bonding strength also has very big difference.
As above it is directed to that a kind of embodiment describes and/or the feature that shows can be in a manner of same or similar at one or more
It is used in a number of other embodiments, and/or the feature in other embodiments is combined or substitutes with the feature in other embodiments
It uses.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence or additional of one or more other features, one integral piece, step, component or combinations thereof.
The many features and advantage of these embodiments are clear according to the detailed description, therefore appended claims are intended to
Cover all these feature and advantage of these embodiments fallen into its true spirit and range.Further, since this field
Technical staff is readily apparent that many modifications and changes, therefore is not meant to the embodiment of the present invention being limited to illustrated and description essence
Really structurally and operationally, but all suitable modifications and the equivalent fallen within the scope of its can be covered.
Unspecified part of the present invention is known to the skilled person technology.
Claims (10)
1. a kind of alumina ceramic slurry suitable for 3D printing, which is characterized in that include the raw material of following mass percent：
Wherein, the ceramic powder includes aluminium oxide.
2. a kind of alumina ceramic slurry suitable for 3D printing according to claim 1, which is characterized in that the aluminium is molten
Glue is acidic aluminum sol, and the pH value of the acidic aluminum sol is 2~5；A concentration of 10~40wt.% of the acidic aluminum sol.
3. a kind of alumina ceramic slurry suitable for 3D printing according to claim 1-2, which is characterized in that the phosphorus
A concentration of 10~15wt.% of two aluminium of sour hydrogen, pH value are 2~3.
4. a kind of alumina ceramic slurry suitable for 3D printing according to claim 1-3, which is characterized in that except oxidation
Except aluminium, the ceramic powder also includes nano-oxide, and the nano-scale oxide is selected from nano silicon dioxide, nano-silica
Change at least one of titanium and nano cupric oxide.
5. a kind of alumina ceramic slurry suitable for 3D printing according to claim 4, which is characterized in that the ceramics
In powder, in terms of mass parts, the accounting of the nano-oxide and aluminium oxide is respectively 5%~15% and 85%~95%.
6. a kind of alumina ceramic slurry suitable for 3D printing according to claim 4-5, which is characterized in that the oxygen
The grain size for changing aluminium is 0.5~2 μm；The grain size of the nano-oxide is 20~80nm.
7. a kind of alumina ceramic slurry suitable for 3D printing according to claim 1-6, which is characterized in that described point
Powder is selected from least one of glycerine, carboxymethyl cellulose 1750, polyethylene glycol 400, polyvinyl alcohol 2000.
8. it is suitable for the preparation method of the alumina ceramic slurry of 3D printing according to claim 1-7 any one of them, it is special
Sign is, is realized by following steps:
The ceramic powder of formula ratio, Aluminum sol, aluminium dihydrogen phosphate and dispersant are uniformly mixed and are carried out ball milling, aging successively
The ceramic slurry of certain plasticity and mobility is obtained afterwards.
9. the preparation method of the alumina ceramic slurry according to claim 8 suitable for 3D printing, it is characterised in that：Institute
It is 20-30min to state Ball-milling Time, and the aging time is 24-48h.
10. the application of the alumina ceramic slurry suitable for 3D printing described in a kind of any one of claim 1-8 claims,
It is characterized in that, (1) uses 3D printing technique by the alumina ceramic slurry straight forming product；Or (2) by the oxidation
The preparation of aluminium ceramic slurry is shaped to aluminium oxide and increases material, and then prepares ceramic material.
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