CN116041984A - Flake alumina with self-weather-resistant function and preparation method thereof - Google Patents
Flake alumina with self-weather-resistant function and preparation method thereof Download PDFInfo
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- CN116041984A CN116041984A CN202211721424.8A CN202211721424A CN116041984A CN 116041984 A CN116041984 A CN 116041984A CN 202211721424 A CN202211721424 A CN 202211721424A CN 116041984 A CN116041984 A CN 116041984A
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- Prior art keywords
- alumina
- self
- solution
- weather
- parts
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 239000002245 particle Substances 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 21
- 229910000420 cerium oxide Inorganic materials 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 7
- KPZSTOVTJYRDIO-UHFFFAOYSA-K trichlorocerium;heptahydrate Chemical compound O.O.O.O.O.O.O.Cl[Ce](Cl)Cl KPZSTOVTJYRDIO-UHFFFAOYSA-K 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000007787 solid Substances 0.000 claims description 22
- 238000001354 calcination Methods 0.000 claims description 19
- 238000001035 drying Methods 0.000 claims description 17
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 15
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 11
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 11
- 235000011152 sodium sulphate Nutrition 0.000 claims description 11
- 238000005303 weighing Methods 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 9
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 9
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 9
- 235000011151 potassium sulphates Nutrition 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- ASTWEMOBIXQPPV-UHFFFAOYSA-K trisodium;phosphate;dodecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[Na+].[O-]P([O-])([O-])=O ASTWEMOBIXQPPV-UHFFFAOYSA-K 0.000 claims description 9
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 238000001291 vacuum drying Methods 0.000 claims description 8
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 239000012298 atmosphere Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000001103 potassium chloride Substances 0.000 claims description 3
- 235000011164 potassium chloride Nutrition 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- ZJOKNSFTHAWVKK-UHFFFAOYSA-K aluminum octadecanoate sulfate Chemical compound C(CCCCCCCCCCCCCCCCC)(=O)[O-].[Al+3].S(=O)(=O)([O-])[O-] ZJOKNSFTHAWVKK-UHFFFAOYSA-K 0.000 claims description 2
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- ZLMJMSJWJFRBEC-OUBTZVSYSA-N potassium-40 Chemical group [40K] ZLMJMSJWJFRBEC-OUBTZVSYSA-N 0.000 claims description 2
- 241000276425 Xiphophorus maculatus Species 0.000 claims 2
- 239000000049 pigment Substances 0.000 abstract description 21
- 238000000576 coating method Methods 0.000 abstract description 7
- 239000011248 coating agent Substances 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 3
- 239000003973 paint Substances 0.000 abstract description 3
- 239000002537 cosmetic Substances 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 229920003023 plastic Polymers 0.000 abstract description 2
- 230000007062 hydrolysis Effects 0.000 abstract 1
- 238000006460 hydrolysis reaction Methods 0.000 abstract 1
- 239000000976 ink Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 36
- 150000003839 salts Chemical class 0.000 description 8
- 238000003837 high-temperature calcination Methods 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000002441 X-ray diffraction Methods 0.000 description 4
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 description 2
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- BYFGZMCJNACEKR-UHFFFAOYSA-N aluminium(i) oxide Chemical compound [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 2
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 1
- MIMUSZHMZBJBPO-UHFFFAOYSA-N 6-methoxy-8-nitroquinoline Chemical compound N1=CC=CC2=CC(OC)=CC([N+]([O-])=O)=C21 MIMUSZHMZBJBPO-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 1
- 150000008041 alkali metal carbonates Chemical class 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical compound [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 description 1
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 description 1
- 229940063655 aluminum stearate Drugs 0.000 description 1
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- UNJPQTDTZAKTFK-UHFFFAOYSA-K cerium(iii) hydroxide Chemical compound [OH-].[OH-].[OH-].[Ce+3] UNJPQTDTZAKTFK-UHFFFAOYSA-K 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920001558 organosilicon polymer Polymers 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/10—Preparation or treatment, e.g. separation or purification
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F17/00—Compounds of rare earth metals
- C01F17/20—Compounds containing only rare earth metals as the metal element
- C01F17/206—Compounds containing only rare earth metals as the metal element oxide or hydroxide being the only anion
- C01F17/224—Oxides or hydroxides of lanthanides
- C01F17/235—Cerium oxides or hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/021—After-treatment of oxides or hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/30—Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/40—Compounds of aluminium
- C09C1/407—Aluminium oxides or hydroxides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
- C09C3/043—Drying, calcination
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
- C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- C01P2006/62—L* (lightness axis)
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
- C09C2200/10—Interference pigments characterized by the core material
- C09C2200/1004—Interference pigments characterized by the core material the core comprising at least one inorganic oxide, e.g. Al2O3, TiO2 or SiO2
Abstract
The invention discloses a flaky alumina with a self-weather-proof function and a preparation method thereof. The method is characterized in that a certain amount of cerium chloride heptahydrate is added in the process of preparing the flaky alumina to construct a unique alumina-cerium oxide composite structure. The method ensures that the prepared flaky alumina has good self-weather-proof function, and has the advantages of good particle dispersibility and large diameter-thickness ratio. The pearlescent pigment prepared from the flaky alumina can meet the requirements of automobile-grade weather resistance without complex treatment processes such as secondary hydrolysis and the like, and is well used in the industries of automobile paint, coating, printing ink, cosmetics, plastics and the like.
Description
Technical Field
The invention relates to the technical field of preparation methods of flaky alumina, in particular to flaky alumina with a self-weather-resistant function and a preparation method thereof.
Background
Pearlescent pigments are widely used in the industries of ink printing, cosmetics, leather, plastics, etc. by their unique optical effect and physicochemical properties. The pearlescent pigment is a planar sandwich body formed by coating a transparent or semitransparent flake as a core and coating a layer or alternately coating a plurality of layers of metal/nonmetal oxides on the surface of the pearlescent pigment by adopting a special chemical process. When light irradiates the surface of the pearlescent pigment, most of incident light is reflected, and the rest light is transmitted to the next layer of pigment wafer, and the pearlescent pigment is subjected to multiple reflection and transmission to generate a three-dimensional pearlescent effect.
The main factors affecting the pearlescent effect are the substrate and the coating process. Among these are refractive index, particle size, shape, surface flatness, cleanliness, etc. The alumina crystal has low refractive index, good light transmittance, good chemical stability and high temperature resistance, and is the optimal raw material for preparing the pearlescent pigment.
Especially in the fields of high weather-proof requirements such as automobile paint and exterior wall paint, the pearlescent pigment can change in adhesive force, color, glossiness and the like under the comprehensive actions of moisture, ultraviolet rays, oxygen and the like, thereby affecting the attractive appearance and the performance and limiting the service life of the pearlescent pigment. Therefore, the protective coating is coated on the surface of the pearlescent pigment to achieve the purpose of weather resistance.
For the flaky alumina, students at home and abroad have conducted a series of research works and part of research results have been converted into commercial products. The existing preparation methods of the flaky alumina (alpha Al2O 3) comprise a high-temperature sintering method, a hydrothermal method, a sol-gel method, a mechanical method, a molten salt method and the like.
Among them, patent No.111239/1982 discloses a-alumina in the form of hexagonal flakes having a particle diameter of more than 10 μm and an aspect ratio (particle diameter/thickness) of 5 to 10. The patent CN101541681 prepares flaky alumina with average particle thickness less than or equal to 0.5 mu m and average particle size more than or equal to 30 mu m by hydrolyzing an aqueous solution of aluminum, zinc and tin precursors containing water-soluble fluxing agents, aging, drying and crystallizing. An alumina flake having an average particle diameter of about 5-60 μm, a thickness of less than 1 μm and an aspect ratio of >20 is disclosed in US5702519 a. Patent CN1150165a discloses a flaky alumina having an average particle diameter of 5-60 μm and a thickness of less than 1 μm, which is obtained by mixing an aqueous solution of a water-soluble aluminum salt and a titanium salt with an aqueous solution of an alkali metal carbonate by a molten salt method, evaporating the dried gel, and calcining at a high temperature. The patent CN110436501a adopts a molten salt method, and aluminum sources such as aluminum hydroxide, aluminum sulfate, aluminum chloride and the like are mixed with water, magnesium sulfate is added, and the mixture is stirred and calcined at a high temperature to obtain flaky alumina. The patent CN103359764A is prepared by mixing nano aluminum oxide powder with sodium sulfate and potassium sulfate, distilling, calcining, filtering and drying to obtain flaky alpha aluminum oxide. Patent CN101941728A discloses a preparation method of flaky alumina, which is characterized in that aluminum hydroxide is used as a raw material, sodium sulfate is used as a synthetic medium, ethanol is activated and dispersed, and the flaky alumina is prepared by high-temperature calcination. Patent CN114920272a discloses a method for rapidly preparing flaky alumina, which comprises adding mineralizer into an aluminum source, adding additives, water and the like to form a mixed solution, heating, calcining at high temperature, filtering and drying to obtain flaky alumina. Patent CN113173590a uses aluminum-containing liquid metal as a medium, and molten salt on the liquid metal medium reacts with alumina to produce flake alumina. Patent CN114958035 a discloses a method for preparing flaky alpha alumina by adding aluminum fluoride into molten salt serving as a reaction medium to form an aluminum fluoride molten salt system, wherein the particle size is 15 μm, and the thickness is about 0.2 μm. Patent CN105347377A discloses a preparation method of high-purity flaky alumina with the thickness less than or equal to 1.0 mu m and the radial dimension of 5-20, which takes high-purity aluminum isopropoxide and isopropanol as main raw materials, ammonium bifluoride or ammonium fluoride controls the morphology of crystals to form hydrated alumina, and the flaky alumina is obtained by filtering, drying and calcining in sequence. The patent CN110182834A adopts pseudo-boehmite as an aluminum source, adds a crystal production regulator, dries and calcines to obtain flaky alpha alumina with D50 of 18-28 μm and thickness of 0.3-0.5 μm. Patent CN114590827a provides a method for preparing flaky alpha alumina with large particle size and high aspect ratio, mixing flaky alumina seeds with a precursor, and calcining under specific conditions to obtain flaky alumina with average particle size of about 38 μm and thickness of about 0.5 μm. The patent CN112479241a mixes aluminum hydroxide with a strong alkali solution, obtains flake aluminum hydroxide by aging, mixes with molten salt and calcines under specific conditions, and obtains flake aluminum oxide with an average particle diameter of about 10 μm and a thickness of 0.5 μm.
However, the flaky alumina prepared in the above patent is not mentioned as having a weather-resistant function by itself.
In addition, under the prior art, the surface of the traditional pearlescent powder is coated with oxide or hydroxide (two or more of aluminum oxide, cerium oxide, aluminum hydroxide, cerium hydroxide and silicon dioxide) by a liquid phase deposition method, and then the surface is further coated with a silane coupling agent or an active organosilicon polymer, so that the pearlescent pigment has a weather-proof function, and the flaky aluminum oxide does not have the weather-proof function.
Disclosure of Invention
In view of the above-mentioned shortcomings in the prior art, the present invention aims to: the flaky alumina with the self-weather-resistant function and the preparation method thereof are provided, so that the pearlescent pigment prepared from the flaky alumina has better weather resistance on the premise of not coating oxide or hydroxide on the surface, and the flaky alumina has the advantages of good flaky dispersibility, smooth surface, good light transmittance, uniform particle size distribution, large diameter-thickness ratio, high temperature resistance and the like.
The technical scheme adopted for solving the technical problems is as follows:
a sheet alumina having a self-weathering function, which comprises alumina and cerium oxide as main components, wherein the content of cerium oxide is 1 to 4wt%.
Further preferably, the average particle diameter of the flaky alumina is 5 to 65 μm and the thickness is 0.2 to 0.8. Mu.m.
A preparation method of flaky alumina with a self-weather-resistant function comprises the following steps:
s1, preparing a solution A: weighing the following components in parts by mass: 90-110 parts of aluminum sulfate hydrate, 10-30 parts of cerium chloride heptahydrate, 30-40 parts of anhydrous potassium sulfate and 40-50 parts of sodium sulfate, and dissolving the materials in 60-80 ℃ deionized water to obtain a solution A;
s2, preparing a solution B: weighing the following components in parts by mass: 1-2 parts of sodium phosphate dodecahydrate and 50-60 parts of anhydrous sodium carbonate, and dissolving the sodium phosphate dodecahydrate and the anhydrous sodium carbonate in normal-temperature deionized water to obtain a solution B;
s3, slowly dropwise adding the solution B into the solution A under uniform stirring, so as to obtain white gel;
s4, placing the white gel in a water bath kettle for evaporation treatment, and then placing the white gel in a vacuum drying oven for drying treatment, so that a white solid is prepared;
s5, calcining the white solid at a high temperature in an atmosphere muffle furnace, and then naturally cooling;
and S6, washing, suction filtering and drying the cooled white solid in sequence to finally obtain the flaky alumina with the self-weather-resistant function.
Further preferably, the temperature of the water bath kettle is set to be 80-90 ℃.
Further preferably, the temperature of the vacuum drying oven is set at 110-120 ℃.
In a further preferred technical scheme, the white solid is continuously calcined for 3-4 hours in the range of 1100-1300 ℃ of calcining temperature in the high-temperature calcining process.
According to a further preferred technical scheme, in the preparation process of the solution A, aluminum chloride can be adopted to replace aluminum stearate, and the dosage is unchanged.
In a further preferred technical scheme, in the preparation process of the solution A, the potassium sulfate can be replaced by potassium chloride, and the dosage is unchanged.
In a further preferred technical scheme, in the preparation process of the solution A, sodium chloride can be adopted to replace sodium sulfate, and the dosage is unchanged.
In a further preferred embodiment, sodium carbonate may be replaced by sodium hydroxide in the preparation of solution B, in a constant amount.
The beneficial effects of the invention are as follows: the flaky alumina prepared by the scheme adopts a molten salt method, a unique alumina-cerium oxide composite structure is constructed by adding cerium chloride heptahydrate, and the pearlescent pigment prepared by adopting the alumina can meet the requirement of automobile-grade weather resistance under the condition of no need of a cladding coating.
In addition, the sheet alumina prepared by the scheme has excellent parameter performance in various aspects, such as: the particle size is 5-65 μm, the thickness is 0.2-0.8 μm, and the tablet has the advantages of good dispersibility, smooth surface, good light transmittance, uniform particle size distribution, large diameter-thickness ratio and high temperature resistance.
Drawings
FIG. 1 is a flow chart showing the preparation of a flaky alumina in the present embodiment.
Figure 2 is an XRD diffractogram of the substrate product of example 1.
FIG. 3 is a graph of the particle size distribution of the substrate product of example 1.
FIG. 4 is an electron scanning electron microscope image of the substrate product of example 1.
Detailed Description
In order to better illustrate the present invention, the following description of the technical solution in the embodiments of the present invention will be made clearly and completely.
Example 1:
the implementation flow of the scheme is shown in figure 1:
the first step: preparation of solution A
Weighing respectively: 90g of hydrated aluminum sulfate, 10g of cerium chloride heptahydrate, 30g of anhydrous potassium sulfate and 40g of sodium sulfate are dissolved in 400-500 ml of deionized water at 60-80 ℃ to obtain solution A.
And a second step of: preparation of solution B
Weighing the following components in parts by mass: 1g of sodium phosphate dodecahydrate and 50g of anhydrous sodium carbonate, and dissolving the sodium phosphate dodecahydrate and the anhydrous sodium carbonate in 200-300 ml of normal-temperature deionized water to obtain a solution B.
And a third step of: obtaining white gel
S3, slowly dripping the solution B into the solution A at the temperature of 60-80 ℃ under uniform stirring, so as to prepare white gel.
Fourth step: obtain white solid
And (3) placing the white gel in a water bath kettle with the temperature of 80-90 ℃ for evaporation treatment, and then placing the white gel in a vacuum drying oven with the temperature of 110-120 ℃ for drying treatment, thereby obtaining a white solid.
Fifth step: high temperature calcination treatment
Calcining the white solid at high temperature in an atmosphere muffle furnace, and then naturally cooling; in the high-temperature calcination process, the calcination is ensured to be continued for 3 to 4 hours in the range of 1100 to 1300 ℃.
Sixth step: cleaning and drying treatment
And washing, suction filtering and drying the cooled white solid in sequence to finally obtain the flaky alumina with the self-weather-resistant function.
The flaky alumina prepared by the scheme is detected:
detection of alumina-ceria composite structure: as shown in FIG. 2, the flaky alumina was measured by XRD analysis, characteristic peaks of alumina and ceria were found in the diffraction pattern, and 4.0% of ceria was contained in the flaky alumina by chemical analysis.
Detection of the size of the flaky alumina: as shown in FIG. 3, the size of the flaky alumina was measured by an Euramerican LS-609 laser particle size analyzer, and D50 was 27.05. Mu.m, and D90 was 68.15. Mu.m. ( The size of the flaky alumina was evaluated by using an Euramerican LS-609 laser particle size analyzer, and the size parameters are represented by D10, D50 and D90. Wherein D10 refers to the particle size corresponding to a sample with a cumulative particle size distribution of 10%, and the physical meaning is that the particle size is less than 10% of its particles; d50 refers to the particle size corresponding to a cumulative particle size distribution percentage of 50%, also called median or median particle size, typically used to represent the average particle size of the powder; d90 refers to the particle size corresponding to a cumulative particle size distribution of 90% for one sample. )
Longitudinal dimension detection of flaky alumina: as shown in FIG. 4, the thickness of the flaky alumina was 0.2 to 0.8 μm as observed by a field emission scanning electron microscope, and no crosslinking or stacking of the flakes was observed. (longitudinal dimension of flaky alumina observed by field emission Scanning Electron Microscope (SEM) under the conditions of acceleration voltage of 5.0KV, probe current of 20nA and amplification factor of 10-1000000 x.)
Detection of gloss, dispersibility, flatness of flaky alumina: the flaky alumina is placed in water and stirred, so that a silk-like flowing linear pearlescent effect can be observed; the addition amount of the polyurethane is 10%, and after the polyurethane is coated and dried, the surface is smooth, no granular feel exists, and the flaky alumina has good dispersibility and no crosslinking of the tablet.
Detection of weather resistance of pearlescent pigment made of the flaky alumina:
the following most conventional preparation process of the silvery pearlescent pigment is exemplified:
(1) 50g of flaky alumina dry powder was weighed, poured into a beaker, and deionized water was added to 800ml.
(2) Heating the water bath kettle to 75 ℃, regulating the pH value to 2.0 by using 2M hydrochloric acid, and uniformly stirring for 10 minutes.
(3) 70ml of 2M titanium solution is slowly added dropwise by a peristaltic pump, meanwhile, 4M alkali is added dropwise to maintain the pH value stable, and stirring is continued for 10 minutes after the reaction is finished.
(4) And repeatedly washing the obtained solid by using deionized water to reach the pH value of about 7, carrying out vacuum filtration, and drying at 110 ℃.
(5) And calcining the dried solid in an atmosphere muffle furnace, wherein the calcining temperature is 700 ℃, the constant temperature is kept for 1 hour, and the silver pearlescent pigment is prepared by natural cooling.
And testing the weather resistance of the prepared pearlescent pigment by adopting a ZN-G ultraviolet irradiation box.
The test condition is a 40W UVB-313el lamp with the illumination intensity of 0.71W/m 2 4h of illumination, 4h of condensation, and the temperature of a blackboard is 60+/-3 ℃ and the condensation temperature is 50+/-3 ℃. The CM-M6 portable color difference meter is used for testing data once every 200 hours and recording weather resistance change.
Wherein Δe×ab refers to the magnitude of the color difference change, and the smaller the value, the smaller the color change, i.e. the better the weather resistance; Δl indicates brightness, with a larger L value indicating whiter (brighter); a is red and green of the color, +a represents reddish, and-a represents greenish; b is the yellow-blue color, +b is the yellowish color, and-b is the bluish color.
The following test results show that the merck company pearlescent pigment product (merck 9103 pearlescent pigment) with weather resistance is used as a control scheme
From the comparison data in the above table, it can be seen that: after the weather resistance test for 500h, the flaky alumina prepared by the scheme has the minimum color difference value delta E-ab in the same test temperature environment, namely, the weather resistance of the flaky alumina is better than that of the conventional weather-resistant pearlescent pigment.
Example 2:
the first step: preparation of solution A
Weighing respectively: 100g of hydrated aluminum sulfate, 28g of cerium chloride heptahydrate, 35g of anhydrous potassium sulfate and 44g of sodium sulfate are dissolved in 60-80 ℃ deionized water to obtain solution A.
And a second step of: preparation of solution B
Weighing respectively: 1.3g of sodium phosphate dodecahydrate and 56g of anhydrous sodium carbonate are dissolved in 200-300 ml of deionized water at normal temperature to obtain solution B.
And a third step of: obtaining white gel
S3, slowly dropwise adding the solution B into the solution A under uniform stirring, so as to obtain white gel.
Fourth step: obtain white solid
And (3) placing the white gel in a water bath kettle with the temperature of 80-90 ℃ for evaporation treatment, and then placing the white gel in a vacuum drying oven with the temperature of 110-120 ℃ for drying treatment, thereby obtaining a white solid.
Fifth step: high temperature calcination treatment
Calcining the white solid at high temperature in an atmosphere muffle furnace, and then naturally cooling; in the high-temperature calcination process, the calcination is ensured to be continued for 3 to 4 hours in the range of 1100 to 1300 ℃.
Sixth step: cleaning and drying treatment
And washing, suction filtering and drying the cooled white solid in sequence to finally obtain the flaky alumina with the self-weather-resistant function.
The flake alumina size was measured using an Euramerican LS-609 laser particle size analyzer, with a D50 of 25.34 μm and a D90 of 49.83. Mu.m. The thickness of the flaky alumina is 0.4-0.7 mu m by using a field emission scanning electron microscope, and the flaky alumina basically has no stacking phenomenon. The XRD analysis shows that the characteristic peaks of alumina and cerium oxide are found in the diffraction pattern, and the chemical analysis shows that the alumina contains 2.1% cerium oxide. Good dispersibility of the flaky alumina was observed by stirring in water.
Example 3:
the first step: preparation of solution A
Weighing respectively: 110g of hydrated aluminum sulfate, 30g of cerium chloride heptahydrate, 40g of anhydrous potassium sulfate and 50g of sodium sulfate are dissolved in 60-80 ℃ deionized water to obtain solution A.
And a second step of: preparation of solution B
Weighing respectively: 2g of sodium phosphate dodecahydrate and 60g of anhydrous sodium carbonate, and dissolving the sodium phosphate dodecahydrate and the anhydrous sodium carbonate in 200-300 ml of deionized water at normal temperature to obtain solution B.
And a third step of: obtaining white gel
S3, slowly dropwise adding the solution B into the solution A under uniform stirring, so as to obtain white gel.
Fourth step: obtain white solid
And (3) placing the white gel in a water bath kettle with the temperature of 80-90 ℃ for evaporation treatment, and then placing the white gel in a vacuum drying oven with the temperature of 110-120 ℃ for drying treatment, thereby obtaining a white solid.
Fifth step: high temperature calcination treatment
Calcining the white solid at high temperature in an atmosphere muffle furnace, and then naturally cooling; in the high-temperature calcination process, the calcination is ensured to be continued for 3 to 4 hours in the range of 1100 to 1300 ℃.
Sixth step: cleaning and drying treatment
And washing, suction filtering and drying the cooled white solid in sequence to finally obtain the flaky alumina with the self-weather-resistant function.
The flake alumina size was measured with a Euramerican LS-609 laser particle size analyzer, with a D50 of 26.41 μm and a D90 of 60.22. Mu.m. The thickness of the flaky alumina is 0.5-0.8 mu m by using a field emission scanning electron microscope, and the flaky alumina basically has no stacking phenomenon. The XRD analysis shows that the characteristic peaks of alumina and cerium oxide are found in the diffraction pattern, and the chemical analysis shows that the alumina contains 3.6% cerium oxide. Good dispersibility of the flaky alumina was observed by stirring in water.
Example 4:
on the basis of example 1, aluminum sulfate octadecanoate can be replaced by aluminum chloride in the preparation process of the solution A, and the dosage is unchanged. The potassium sulfate can be replaced by potassium chloride, and the dosage is unchanged. Sodium sulfate can be replaced by sodium chloride, and the dosage is unchanged.
In the preparation process of the solution B, sodium carbonate can be replaced by sodium hydroxide, and the dosage is unchanged.
The foregoing has outlined and described the basic principles and main features of the present solution and the advantages of the present solution. It will be appreciated by persons skilled in the art that the present invention is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of protection of the present solution is defined by the appended claims and equivalents thereof.
Claims (10)
1. A sheet-like alumina having a self-weathering function, characterized in that it comprises alumina and cerium oxide as main components, wherein the content of cerium oxide is 1 to 4% by weight.
2. The sheet alumina having a self-weather-resistant function as claimed in claim 1, wherein the average particle diameter of the sheet alumina is 5 to 65 μm and the thickness thereof is 0.2 to 0.8. Mu.m.
3. The preparation method of the flaky alumina with the self-weather-resistant function is characterized by comprising the following steps of:
s1, preparing a solution A: weighing the following components in parts by mass: 90-110 parts of aluminum sulfate hydrate, 10-30 parts of cerium chloride heptahydrate, 30-40 parts of anhydrous potassium sulfate and 40-50 parts of sodium sulfate, and dissolving the materials in 60-80 ℃ deionized water to obtain a solution A;
s2, preparing a solution B: weighing the following components in parts by mass: 1-2 parts of sodium phosphate dodecahydrate and 50-60 parts of anhydrous sodium carbonate, and dissolving the sodium phosphate dodecahydrate and the anhydrous sodium carbonate in normal-temperature deionized water to obtain a solution B;
s3, slowly dropwise adding the solution B into the solution A under uniform stirring, so as to obtain white gel;
s4, placing the white gel in a water bath kettle for evaporation treatment, and then placing the white gel in a vacuum drying oven for drying treatment, so that a white solid is prepared;
s5, calcining the white solid at a high temperature in an atmosphere muffle furnace, and then naturally cooling;
and S6, washing, suction filtering and drying the cooled white solid in sequence to finally obtain the flaky alumina with the self-weather-resistant function.
4. The method for preparing the flaky alumina with a self-weather-resistant function according to claim 3, wherein the temperature of the water bath kettle is set to be 80-90 ℃.
5. The method for producing a sheet alumina having a self-weather-resistant function as claimed in claim 3, wherein the temperature of the vacuum drying oven is set at 110 to 120 ℃.
6. A method for producing a sheet alumina having a self-weather-resistant function as claimed in claim 3, wherein the white solid is calcined at a high temperature in a calcination process for 3 to 4 hours at a calcination temperature of 1100 to 1300 ℃.
7. The method for preparing a self-weatherable platy aluminum oxide according to claim 3, wherein aluminum sulfate octadecanoate can be replaced by aluminum chloride in the preparation process of the solution A, and the dosage is unchanged.
8. The method for preparing a self-weatherable platy aluminum oxide according to claim 3, wherein the potassium sulfate can be replaced by potassium chloride in the preparation process of the solution A, and the dosage is unchanged.
9. The method for preparing a self-weatherable sheet alumina according to claim 3, wherein sodium sulfate is replaced by sodium chloride in the preparation of solution A, and the amount of sodium sulfate is constant.
10. A method for producing a sheet alumina having a self-weather-resistant function as claimed in claim 3, wherein sodium carbonate is replaced with sodium hydroxide in the production of the solution B in a constant amount.
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