CN115254610B - Fine classifier impeller for processing ceramic powder for copper-clad plate and manufacturing method thereof - Google Patents
Fine classifier impeller for processing ceramic powder for copper-clad plate and manufacturing method thereof Download PDFInfo
- Publication number
- CN115254610B CN115254610B CN202210921811.XA CN202210921811A CN115254610B CN 115254610 B CN115254610 B CN 115254610B CN 202210921811 A CN202210921811 A CN 202210921811A CN 115254610 B CN115254610 B CN 115254610B
- Authority
- CN
- China
- Prior art keywords
- piezoelectric ceramic
- powder
- impeller
- ceramic powder
- binder
- 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.)
- Active
Links
- 239000000843 powder Substances 0.000 title claims abstract description 217
- 239000000919 ceramic Substances 0.000 title claims abstract description 191
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000012545 processing Methods 0.000 title claims abstract description 19
- 239000011230 binding agent Substances 0.000 claims abstract description 56
- 239000002245 particle Substances 0.000 claims abstract description 51
- 238000000034 method Methods 0.000 claims abstract description 36
- 238000012216 screening Methods 0.000 claims abstract description 19
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000002360 preparation method Methods 0.000 claims description 86
- 239000007864 aqueous solution Substances 0.000 claims description 59
- 239000000835 fiber Substances 0.000 claims description 36
- 239000010936 titanium Substances 0.000 claims description 35
- 238000000498 ball milling Methods 0.000 claims description 32
- 238000005245 sintering Methods 0.000 claims description 30
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 28
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 27
- 239000000243 solution Substances 0.000 claims description 26
- 238000003756 stirring Methods 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 21
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 20
- RLJMLMKIBZAXJO-UHFFFAOYSA-N lead nitrate Chemical compound [O-][N+](=O)O[Pb]O[N+]([O-])=O RLJMLMKIBZAXJO-UHFFFAOYSA-N 0.000 claims description 18
- CMOAHYOGLLEOGO-UHFFFAOYSA-N oxozirconium;dihydrochloride Chemical compound Cl.Cl.[Zr]=O CMOAHYOGLLEOGO-UHFFFAOYSA-N 0.000 claims description 18
- 230000010287 polarization Effects 0.000 claims description 17
- 229910052582 BN Inorganic materials 0.000 claims description 16
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 16
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 16
- 238000000227 grinding Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 16
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 16
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 14
- 238000001354 calcination Methods 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 14
- 239000012065 filter cake Substances 0.000 claims description 14
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 239000003292 glue Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 9
- 239000008187 granular material Substances 0.000 claims description 9
- 239000011259 mixed solution Substances 0.000 claims description 9
- 238000000465 moulding Methods 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
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical class NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 8
- 239000000314 lubricant Substances 0.000 claims description 8
- 239000012046 mixed solvent Substances 0.000 claims description 8
- 239000002243 precursor Substances 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 8
- QCZFMLDHLOYOQJ-UHFFFAOYSA-H samarium(3+);tricarbonate Chemical compound [Sm+3].[Sm+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O QCZFMLDHLOYOQJ-UHFFFAOYSA-H 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 7
- 238000000748 compression moulding Methods 0.000 claims description 7
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 238000007873 sieving Methods 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 7
- 239000011787 zinc oxide Substances 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003963 antioxidant agent Substances 0.000 claims description 6
- 230000003078 antioxidant effect Effects 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000011737 fluorine Substances 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 229920000098 polyolefin Polymers 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000292 calcium oxide Substances 0.000 claims description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 4
- 238000007865 diluting Methods 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 claims description 4
- 238000003760 magnetic stirring Methods 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 238000004729 solvothermal method Methods 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 2
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 19
- 230000000903 blocking effect Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 230000000052 comparative effect Effects 0.000 description 30
- 238000012360 testing method Methods 0.000 description 27
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 239000000839 emulsion Substances 0.000 description 9
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 7
- -1 mine Substances 0.000 description 7
- 230000000977 initiatory effect Effects 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 229920002050 silicone resin Polymers 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 239000005457 ice water Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 2
- 239000004200 microcrystalline wax Substances 0.000 description 2
- 235000019808 microcrystalline wax Nutrition 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 238000009818 secondary granulation Methods 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 235000012431 wafers Nutrition 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- SSFPFXJXRPTLGF-UHFFFAOYSA-N 1,1,1,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluorooctane-2-thiol Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(S)C(F)(F)F SSFPFXJXRPTLGF-UHFFFAOYSA-N 0.000 description 1
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000617 Mangalloy Inorganic materials 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- FCZCIXQGZOUIDN-UHFFFAOYSA-N ethyl 2-diethoxyphosphinothioyloxyacetate Chemical compound CCOC(=O)COP(=S)(OCC)OCC FCZCIXQGZOUIDN-UHFFFAOYSA-N 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-M hydrosulfide Chemical compound [SH-] RWSOTUBLDIXVET-UHFFFAOYSA-M 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001132 ultrasonic dispersion Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
- B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
-
- 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
- C04B35/48—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 zirconium or hafnium oxides, zirconates, zircon or hafnates
- C04B35/49—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 zirconium or hafnium oxides, zirconates, zircon or hafnates containing also titanium oxides or titanates
- C04B35/491—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 zirconium or hafnium oxides, zirconates, zircon or hafnates containing also titanium oxides or titanates based on lead zirconates and lead titanates, e.g. PZT
- C04B35/493—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 zirconium or hafnium oxides, zirconates, zircon or hafnates containing also titanium oxides or titanates based on lead zirconates and lead titanates, e.g. PZT containing also other lead compounds
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- 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
- C04B35/622—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
-
- 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
- C04B35/622—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
- C04B35/62685—Treating the starting powders individually or as mixtures characterised by the order of addition of constituents or additives
-
- 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
- C04B35/622—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
-
- 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
- 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
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3229—Cerium oxides or oxide-forming salts thereof
-
- 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
- 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
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
-
- 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
- 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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
- C04B2235/386—Boron nitrides
-
- 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
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
- C04B2235/5216—Inorganic
- C04B2235/524—Non-oxidic, e.g. borides, carbides, silicides or nitrides
-
- 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
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5276—Whiskers, spindles, needles or pins
-
- 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
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5427—Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6562—Heating rate
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6565—Cooling rate
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The application relates to the technical field of impeller back manufacturing of micro-graders, in particular to a micro-grader impeller for processing ceramic powder for copper-clad plates and a manufacturing method thereof. A micro classifier impeller for processing ceramic powder for copper-clad plates is prepared from the following raw materials in parts by weight: 100 parts of piezoelectric ceramic particles and 20-40 parts of first binder; the piezoelectric ceramic particles are mainly prepared by granulating piezoelectric ceramic powder and a second binder; the particle size of the piezoelectric ceramic particles is controlled to be 40-60 meshes; the piezoelectric ceramic powder is prepared by adopting a hydrothermal synthesis method, the expression is Pb (1-x) SmxZryTi (1-y) O3, x=0-0.05, and y=0.46-0.48; the piezoelectric ceramic powder D50 is controlled to be 0.2-16 microns. The impeller prepared by the application is applied to a micro classifier, and is not easy to cause powder blocking and sticking during classification of the material powder, thereby improving the classification and screening effects of the material.
Description
Technical Field
The application relates to the technical field of impeller back manufacturing of micro-graders, in particular to a micro-grader impeller for processing ceramic powder for copper-clad plates and a manufacturing method thereof.
Background
In the industrial production process, the particle size of various fine powder materials is strictly limited, such as the fineness, purity and passing rate of the fine powder materials. The superfine classifier can classify materials with different granularity and is widely applied to industries such as cement, mine, chemical industry, filler, food and the like. In the production process of the high-frequency high-speed copper-clad plate, a micro classifier is required to carry out classification screening on ceramic powder for the special copper-clad plate, and the quality of classification screening quality directly influences the quality of the prepared high-frequency high-speed copper-clad plate.
Grading principle of micro grader: let the circle S represent the outer contour of the classifying impeller, the airflow is represented by a dotted line, P is a point of intersection on the impeller surface, and the particles are acted on by two opposite forces at the point P, namely centrifugal inertia force F generated by the rotation of the impeller and resistance R from the airflow. F= (pi/6) d 3 (ρs-ρ)(u θ 2 /r)，R＝3πμdu r Wherein d is the particle diameter of the material; r-average radius of impeller; ρs is the material powder density; ρ—air density; u (u) θ- Average peripheral velocity of impeller (tangential velocity of particles); mu is the air viscosity, u r Radial velocity of the gas flow (radial velocity of the particles). When the centrifugal force exerted on the particles is greater than the air flow resistance (F>And R) the particles fly to the inner wall of the classifying chamber along the direction of the impeller and then fall down along the chamber wall under the action of gravity to the outside of the coarse grain discharge port to be discharged out of the machine to become coarse powder. When the centrifugal force exerted on the particles is smaller than the air flow resistance (F <And R) enabling particles to pass through the gaps of the blades of the classifying impeller along with the air flow, and discharging the particles out of the machine through a fine powder discharge port to form fine powder. When the force f=r to which the particles are subjected, the particle diameter at this time is referred to as a critical particle diameter.
The vertical classifying device in the related art consists of a classifying impeller, a bearing box, a bearing cover, a belt pulley and a motor. The general materials of the classifying impeller comprise stainless steel, carbon steel, manganese steel alloy and 99 alumina wear-resistant ceramic. The applicant has found that, with respect to the impeller of the micro classifier in the related art described above, the technical solution has the following drawbacks: the impeller of the micro classifier in the related art is liable to be clogged or stuck at the impeller when pulverizing ceramic powder.
Disclosure of Invention
The application provides a micro classifier impeller for processing ceramic powder for a copper-clad plate and a manufacturing method thereof, aiming at solving the problem that the impeller of the micro classifier is easy to be blocked or stuck at the impeller when ceramic powder is crushed.
In a first aspect, the application provides a micro classifier impeller for processing ceramic powder for copper-clad plates, which is realized by the following technical scheme:
a micro classifier impeller for processing ceramic powder for copper-clad plates is prepared from the following raw materials in parts by weight: 100 parts of piezoelectric ceramic particles and 20-40 parts of first binder; the piezoelectric ceramic particles are mainly prepared by granulating piezoelectric ceramic powder and a second binder; the particle size of the piezoelectric ceramic particles is controlled to be 40-60 meshes; the piezoelectric ceramic powder is prepared by adopting a hydrothermal synthesis method, and the expression is Pb (1－x) Sm x Zr y Ti (1-y) O 3 X=0 to 0.05, y=0.46 to 0.48; the grain diameter D50 of the piezoelectric ceramic powder is controlled to be 0.2-16 mu m.
Pb with tetragonal perovskite structure prepared by hydrothermal synthesis method 1－x Sm x Zr 0.52 Ti 0.48 O 3 The impeller of the micro classifier is prepared by taking the piezoelectric ceramic powder as a raw material, and vibration with a certain amplitude is generated in the use process of the impeller, so that the impeller is applied to the micro classifier, and the situation of powder blocking and powder sticking is not easy to occur when the material powder classification is carried out, and the material classification and screening effects are improved.
Preferably, the expression of the piezoelectric ceramic powder is Pb (1－x) Sm x Zr 0.52 Ti 0.48 O 3 X= 0,0.01,0.02,0.03,0.04,0.05; the piezoelectric ceramic powder D50 is controlled to be 0.5-4.8 mu m.
By adopting the technical scheme, the Sm infiltration amount and Zr are reduced 0 Limiting the ratio of Ti to Pb 1－ x Sm x Zr 0.52 Ti 0.48 O 3 The crystal phase structure of the impeller of the prepared micro classifier can improve the piezoelectric constant, the relative dielectric constant and the dielectric loss, thereby improving the whole powder classifying and screening effect.
Preferably, the preparation method of the piezoelectric ceramic particles comprises the following steps:
s1, preparing piezoelectric ceramic powder;
s1.1, preparing a titanium tetrachloride aqueous solution, a zirconium oxychloride aqueous solution and a lead nitrate aqueous solution, wherein the molar concentration of the titanium tetrachloride aqueous solution is 0.5mol/L, the molar concentration of the zirconium oxychloride aqueous solution is 1mol/L, and the molar concentration of the lead nitrate aqueous solution is 2mol/L;
S1.2, according to the expression of the PZT powder, the method comprises the following steps: pb (1－x) Sm x Zr 0.52 Ti 0.48 O 3 Respectively measuring the stoichiometric ratio of the titanium tetrachloride aqueous solution, the zirconium oxychloride aqueous solution and the lead nitrate aqueous solution prepared in the step S1.1, adding the titanium tetrachloride aqueous solution and the zirconium oxychloride aqueous solution into a three-necked bottle, preheating for 5-10min in a water bath at 50-70 ℃, dropwise adding the lead nitrate aqueous solution at 0.1-0.2g/min under the stirring condition of 1200-1500r/min, stirring for 10-20min, and then adding ammonia water with the concentration of 25% to adjust the pH value of the solution to 8-10 to obtain a mixed solution;
s1.3, preserving heat for 20-40min, centrifuging, washing the obtained filter cake with a mixed solvent for 2-3 times, placing the filter cake in the mixed solvent again, adding a mineralizer, wherein the concentration of the mineralizer in the mixed liquid is 0.5-4mol/L, and dispersing for 25-35min by magnetic stirring to obtain precursor slurry;
s1.4, putting the precursor slurry obtained in the step S1.3 into a reaction kettle, carrying out solvothermal reaction for 2-20h in a baking oven at 130-190 ℃ to obtain suspension, centrifuging the obtained suspension, washing with deionized water, 10% acetic acid solution, deionized water and absolute ethyl alcohol respectively, drying filter cakes at 80-85 ℃, sealing bags, placing into a dryer for storage, and ball-milling for 10-15min to obtain PZT piezoelectric ceramic powder;
S1.5, mixing and calcining, grinding and sieving the PZT piezoelectric ceramic powder with the concentration of 99.5-100% and the samarium carbonate with the concentration of 0-0.05% to obtain Pb 1－x Sm x Zr 0.52 Ti 0.48 O 3 Piezoelectric ceramic powder;
s2, ball milling and screening to obtain piezoelectric ceramic powder with D50 of 0.3-16 mu m;
s3, granulating, wherein a second binder PVA solution with the concentration of 3-5wt% is added into the piezoelectric ceramic powder in the S2, the dosage of the second binder PVA solution is 8-10wt% of the total mass of the piezoelectric ceramic powder, granulating, grinding the obtained granules for 30-40min, pressing the obtained granules into large blocks, standing for 24h, crushing the large blocks into powder, granulating for the second time, and sieving to obtain ceramic particles with good fluidity.
By adopting the technical scheme, pb with tetragonal perovskite structure prepared by adopting hydrothermal synthesis method 1－ x Sm x Zr 0.52 Ti 0.48 O 3 The piezoelectric ceramic powder has excellent piezoelectric performance. The preparation method of the piezoelectric ceramic powder provided by the application has relatively mature process technology and is convenient for industrial production.
Preferably, the expression of the piezoelectric ceramic powder is Pb (1－x) Sm x Zr 0.52 Ti 0.48 O 3 ，x＝0.02。
By adopting the technical scheme, pb with tetragonal perovskite structure prepared by adopting hydrothermal synthesis method 0.98 Sm 0.02 Zr 0.52 Ti 0.48 O 3 When the sintering temperature is 1280 ℃, PSm x ZT ceramics have optimal overall electrical properties: piezoelectric constant d 33 =232 pC/N, relative dielectric constant ε r The dielectric loss tan delta=0.22 is taken as the piezoelectric vibrating element of the ultrasonic transducer, and the impeller generates vibration with certain amplitude in the use process, so that the phenomenon of blocking or sticking of materials at the impeller can not occur.
Preferably, the piezoelectric ceramic particles are mainly prepared from piezoelectric ceramic powder, a second binder, functional powder, functional short fibers and functional whiskers; the mass of the functional powder is 0.003-0.015 times of that of the piezoelectric ceramic powder; the mass of the functional short fiber is 0.002-0.01 times of the mass of the piezoelectric ceramic powder; the mass of the functional whisker is 0.001-0.004 times of that of the piezoelectric ceramic powder; the second binder is prepared from organic silicon resin, modified siloxane, diethylenetriamine and a diluting solvent, and the solid content is 40-50%; the modified siloxane is one or a combination of more of fluorine-containing siloxane, FM-3311 siloxane, FM-4411 siloxane, FM-7711 siloxane, FM-0411 siloxane, FM-DA11 siloxane, FM-0711 siloxane and TM-0701T siloxane; the preparation method of the second binder comprises the steps of firstly preparing raw materials, uniformly stirring the organic silicon resin and the modified siloxane, preheating to 70-75 ℃, reacting for 2-3min in advance, cooling to below 10 ℃, adding a diluting solvent, uniformly stirring, finally adding diethylenetriamine, and uniformly stirring to obtain the finished second binder.
By adopting the technical scheme, the piezoelectric ceramic particles with good fluidity and good storage stability can be prepared, and the subsequent preparation of the piezoelectric ceramic impeller is facilitated. In addition, the addition of the functional powder, the functional short fibers and the functional whiskers can effectively improve the mechanical property, the toughness, the heat resistance and the corrosion resistance of the piezoelectric ceramic impeller on the premise of ensuring the overall piezoelectric property.
Preferably, the functional powder is one or a combination of more of silicon nitride powder, cubic boron nitride powder, zirconium oxide, calcium oxide, cerium oxide, magnesium oxide and yttrium oxide; the functional powder D50 is 1-5 microns; the functional short fiber is one or a combination of more of silicon nitride fiber, aluminum oxide fiber and boron nitride fiber; the length of the functional short fiber is 1-10 micrometers; the functional whisker is one or a combination of more of silicon nitride whisker, potassium titanate whisker and zinc oxide whisker.
By optimizing the selection and combination of the functional powder, the functional short fiber and the functional whisker, the mechanical property, the toughness, the heat resistance and the corrosion resistance of the piezoelectric ceramic impeller can be effectively improved on the premise of ensuring the overall piezoelectric property.
Preferably, the piezoelectric ceramic particles are prepared from the following raw materials in parts by weight: 100 parts of piezoelectric ceramic powder, 10-15 parts of second binder, 1-1.2 parts of functional powder, 0.4-0.6 part of functional short fiber and 0.2-0.25 part of functional whisker; the functional powder consists of cubic boron nitride powder, zirconia and cerium oxide; the mass ratio of the cubic boron nitride powder to the zirconia to the cerium oxide is (80-200): 100: (1-3); the functional short fiber is prepared from silicon nitride fiber and boron nitride fiber according to the mass ratio of 1:1, the composition is as follows; the functional whisker is prepared from silicon nitride whisker, potassium titanate whisker and zinc oxide whisker according to the mass ratio of 1: (0.2-0.8): 1.
By adopting the technical scheme, the piezoelectric ceramic impeller with better piezoelectric performance and better mechanical property, toughness, heat resistance and corrosion resistance can be obtained by optimizing the components and the consumption of the piezoelectric ceramic particles, so that the overall powder classifying and screening effect is improved.
Preferably, the first binder is mainly prepared from main components, injection molding grade polyolefin PP, compatilizer EVA, lubricant, dispersing agent and antioxidant; the main component is copolyformaldehyde POM, and the number average molecular weight is 2-4 ten thousand; the lubricant is a CBT resin polymer with a hyperbranched structure; the preparation method of the first adhesive comprises the steps of mixing main components, polyolefin PP, compatilizer EVA, lubricant, dispersing agent and antioxidant at 0-4 ℃ for 10-15min at 300-400rpm to obtain the finished first adhesive.
By adopting the technical scheme, the mixing granulation and the rubber discharging and degreasing operation of the subsequent working section are facilitated, the overall production efficiency of the piezoelectric ceramic impeller can be optimized, and the quality stability of the piezoelectric ceramic impeller can be ensured.
In a second aspect, the application provides a method for manufacturing a micro classifier impeller for processing ceramic powder for a copper-clad plate, which is realized by the following technical scheme:
a manufacturing method of a micro classifier impeller for processing ceramic powder for a copper-clad plate comprises the following steps:
s1, preparing piezoelectric ceramic powder;
s2, ball milling and screening to obtain piezoelectric ceramic powder with D50 of 0.3-16 mu m;
s3, granulating, namely adding a second binder into the piezoelectric ceramic powder in the step S2, granulating, grinding the obtained granules for 30-40min, pressing into large blocks, standing for 24h, crushing into powder, granulating for the second time, and sieving to obtain piezoelectric ceramic particles with good fluidity;
s4, press forming: performing compression molding by a hydraulic powder molding machine, wherein the pressure is set to be 150-180Mpa, and the compression time is set to be 300-360s, so as to obtain a green body impeller;
s5, discharging glue and sintering: heating the green body impeller to 520-550 ℃ at 0.2-0.4 ℃/min, preserving heat for 3-3.2h, removing the binder, sealing the crucible, burying powder, sintering, heating to 1200-1320 ℃ at 0.5-0.6 ℃/min, preserving heat for 2-2.5h, and obtaining the piezoelectric ceramic impeller;
S6, carrying out polarization treatment on the piezoelectric ceramic impeller, then manufacturing two electrodes at the front end and the rear end of the piezoelectric ceramic impeller, respectively connecting electrode leads to the electrodes at the front end and the rear end of the piezoelectric ceramic impeller, pouring insulating impregnating resin around the connection of the electrodes and the electrode leads, and curing to obtain the finished micro classifier impeller.
By adopting the technical scheme, the preparation method is relatively simple, the preparation process is relatively mature, the product quality control difficulty is relatively low, the production investment cost is easy to reduce for a production enterprise, and the industrial mass production is convenient.
Preferably, the step S4 of press forming: performing compression molding by a hydraulic powder molding machine, wherein the pressure is set to 180Mpa, and the compression time is set to 360s, so as to obtain a green body impeller; the rubber discharging and sintering are carried out: heating the green body impeller to 540 ℃ at 0.2 ℃/min, preserving heat for 3 hours, removing the binder, sealing and embedding powder by a crucible, sintering, heating to 1280 ℃ at 0.5 ℃/min, preserving heat for 125 minutes, cooling to 650 ℃ at 2.0-2.5 ℃/min, and opening a furnace for natural cooling to obtain the piezoelectric ceramic impeller.
By adopting the technical scheme, the technological parameters are limited and controlled, so that the quality of products in the same batch can be stabilized, and the piezoelectric performance of the prepared piezoelectric ceramic impeller can be ensured.
In summary, the application has the following advantages:
1. the impeller prepared by the application generates vibration with a certain amplitude in the use process, and is not easy to cause powder blocking and sticking when crushing ceramic powder, and the powder classifying and screening effect is good.
2. The preparation method is relatively simple, the preparation process is relatively mature, the product quality control difficulty is relatively low, the production investment cost is easy to reduce for production enterprises, and the industrialized mass production is facilitated.
3. Pb with tetragonal perovskite structure prepared by hydrothermal synthesis method 0.98 Sm 0.02 Zr 0.52 Ti 0.48 O 3 When the sintering temperature is 1280 ℃, PSm x ZT ceramics have optimal overall electrical properties: piezoelectric constant d 33 =232 pC/N, relative dielectric constant ε r The dielectric loss tan delta=0.22 is taken as the piezoelectric vibrating element of the ultrasonic transducer, and the impeller generates vibration with certain amplitude in the use process, so that the phenomenon of blocking or sticking of materials at the impeller can not occur.
Detailed Description
The present application will be described in further detail with reference to comparative examples and examples.
Preparation example
Preparation example 1
The first binder was prepared from 842g of POM (M90-44, injection grade), 86g of PP (brand AW 564) injection grade polyolefin, 34g of EVA (DuPont 30E783, maleic anhydride grafted EVA) as a molding grade compatibilizer, 16g of PETS plastic lubricant, 4g of microcrystalline wax, 18g of stearic acid dispersant (CAS: 57-11-4), and 15g of antioxidant B900.
The preparation method of the first adhesive comprises the steps of adding 833g of main component-Baoli copolyformaldehyde POM (M90-44, injection molding grade), 88g of injection molding grade polyolefin PP (brand AW 564), 38g of molding grade compatilizer EVA (DuPont 30E783, maleic anhydride grafted EVA), 16g of PETS plastic lubricant, 6g of microcrystalline wax, 18g of stearic acid dispersing agent (CAS: 57-11-4) and 16g of antioxidant B900 into a reaction kettle, introducing nitrogen to control the temperature between 0 ℃ and 4 ℃, starting stirring, mixing for 12min at 360rpm, vacuumizing and defoaming to obtain the finished first adhesive.
Preparation example 2
The second binder was prepared from 36% KR-242A silicone resin, 4% fluorosilicone, 0.1% diethylenetriamine, 59.9% methanol.
A method of preparing a second binder comprising the steps of:
step one, preparation of fluorine-containing siloxane: 19.01g of perfluorohexyl ethanethiol and 250g of TM-0701T siloxane are placed in a three-necked flask, heated to 45 ℃ in a water bath, added with 0.1g of azodiisobutyronitrile, stirred at 320rpm and subjected to hydrosulfide reaction for 1.0h to obtain fluorine-containing siloxane;
step two, mixing 40g of the fluorine-containing siloxane prepared in the step one with 360g of KR-242A silicone resin at 240rpm, stirring for 5min, heating to 72-75 ℃, and pre-reacting for 150s;
And thirdly, adopting an ice salt bath to cool, controlling the temperature to be 0-4 ℃, adding 599g of methanol, stirring for 10min at 250rpm, adding 1.0g of diethylenetriamine, and stirring for 100s at 80rpm to obtain the finished second binder.
Preparation example 3
The second binder was prepared from 36% KR-242A silicone resin, 4% TM-0701T siloxane, 0.1% diethylenetriamine, 59.9% methanol.
The preparation method of the second binder comprises the following steps: 40g of TM-0701T siloxane and 360g of KR-242A silicone resin are mixed and stirred at 240rpm for 5min, then the temperature is raised to 72-75 ℃ and the pre-reaction is carried out for 150s; cooling with ice salt bath, controlling the temperature at 0-4deg.C, adding 599g of methanol, stirring at 250rpm for 10min, adding 1.0g of diethylenetriamine, and stirring at 80rpm for 100s to obtain the final product.
Preparation example 4
The functional powder consists of cubic boron nitride powder, zirconia and cerium oxide. The mass ratio of the cubic boron nitride powder to the zirconia to the cerium oxide is 198:100:2. preparing functional powder, namely mixing cubic boron nitride powder, zirconia and cerium oxide according to the mass ratio of 198:100:2, weighing, adding into a planetary ball mill, wherein the inner container is polytetrafluoroethylene, the grinding balls are 95 zirconia beads, ball milling for 30min at 120rpm, screening to obtain functional powder with the granularity of 1-5 microns, placing into a KH570 coupling agent with the granularity of 3g/L, performing ultrasonic dispersion for 10min, transferring into an oven, and drying at 40 ℃ for 8h to obtain the functional powder.
Preparation example 5
The functional short fiber is prepared from silicon nitride fiber and boron nitride fiber according to the mass ratio of 1: 1.
Preparing functional short fibers: capatiue 4g/L TM Preparing organic functional silane aqueous solution, soaking silicon nitride fiber and boron nitride fiber in Capatiue TM Ultrasonic wave in organic functional silane aqueous solutionDispersing for 10min, taking out, and drying at 40 ℃ for 8h, wherein the mass ratio of the silicon nitride fiber to the boron nitride fiber is 1:1 to obtain the functional short fiber.
Preparation example 6
The functional whisker is prepared from silicon nitride whisker, potassium titanate whisker and zinc oxide whisker according to the mass ratio of 1:0.2: 1. The preparation method of the functional whisker comprises the following steps: step one, preparing an organofluorine modified acrylic acid polymerization emulsion: preparation of pre-emulsion A: taking 375g of total amount of water, 5.0g of emulsifier AES, 75.2g of methyl methacrylate and 340.2g of butyl methacrylate, placing the mixture in a high-speed shear at 3200rpm for pre-emulsifying for 10min, and taking 1/3 of pre-emulsion for later use; simultaneously preparing an initiating liquid, and dissolving 1.25g of initiating agent-azodiisobutyronitrile into 250g of water for later use; meanwhile, preparing a pre-emulsion B: 84.6g of the side chain is C 8 F 17 (CH 2 ) 3 Adding the fluorosilicone polymer into the residual 2/3 of the pre-emulsion A, placing the mixture in high-speed shear at 3200rpm, and continuing to emulsify for 15min for later use; heating 125g of deionized water to 80 ℃, adding the pre-emulsion A in the first step, stirring at 100rpm, simultaneously dripping the initiating liquid prepared in the second step at 6mL/min, stopping heating and dripping the initiating agent after dripping for 22min, continuously stirring at 100rpm for 5min, dripping the pre-emulsion B at 24mL/min, controlling the rotating speed at 160rpm, simultaneously dripping the initiating liquid, controlling the dripping speed to be 1.0mL/min, controlling the reaction at 85 ℃ for 2.0h, and cooling to normal temperature to obtain the organofluorine modified acrylic acid polymerization emulsion; step two, taking 10mL of organic fluorine modified acrylic acid polymerization emulsion and 1000mL of deionized water, dispersing and mixing uniformly, adding silicon nitride whisker, potassium titanate whisker and zinc oxide whisker, dispersing for 10min by ultrasonic, draining, transferring into a baking oven, and baking for 8h at 40 ℃; step three, silicon nitride whisker, potassium titanate whisker and zinc oxide whisker in mass ratio of 1:0.2:1, mixing to obtain the functional whisker.
Preparation example 7
The preparation of the piezoelectric ceramic powder comprises the following steps:
s1.1, preparing a titanium tetrachloride aqueous solution, a zirconium oxychloride aqueous solution and a lead nitrate aqueous solution, wherein the molar concentration of the titanium tetrachloride aqueous solution is 0.5mol/L, the molar concentration of the zirconium oxychloride aqueous solution is 1mol/L, and the molar concentration of the lead nitrate aqueous solution is 2mol/L;
the preparation method of the titanium tetrachloride aqueous solution comprises the following steps: adding ice cubes solidified by deionized water into a beaker, adding 50ml of hydrochloric acid, accurately measuring 14ml of titanium tetrachloride liquid by a pipette, slowly adding titanium tetrachloride under a magnetic stirring state, and finally obtaining a clear and transparent solution, wherein the titanium tetrachloride solution is a solution cooled in a refrigerator, the whole preparation process is carried out in an ice-water mixture state, and finally 250ml of 0.5mol/L titanium tetrachloride aqueous solution is obtained, and then the solution is put into a dryer for storage for standby;
s1.2, according to the expression of the PZT powder, the method comprises the following steps: pbZr (PbZr) 0.52 Ti 0.48 O 3 Respectively measuring the stoichiometric ratio of the titanium tetrachloride aqueous solution, the zirconium oxychloride aqueous solution and the lead nitrate aqueous solution prepared in the step S1.1, adding the titanium tetrachloride aqueous solution and the zirconium oxychloride aqueous solution into a three-necked bottle, preheating for 10min in a water bath at 65 ℃, dropwise adding the lead nitrate aqueous solution at 0.2g/min under the stirring condition of 1400r/min, stirring for 15min, and then adding 25% ammonia water to adjust the pH value of the solution to 9 to obtain a mixed solution;
S1.3, preserving the heat of the mixed solution prepared in the step S1.2 for 30min, centrifuging, washing the obtained filter cake for 3 times by using a mixed solvent (ethanol water solution prepared in a volume ratio of 1:1), then placing the filter cake in the mixed solvent again, adding a mineralizer CaO, wherein the concentration of the mineralizer in the mixed solution is 2mol/L, and then magnetically stirring and dispersing the filter cake for 25min to obtain precursor slurry;
s1.4, putting the precursor slurry obtained in the step S1.3 into a reaction kettle, carrying out solvothermal reaction for 8 hours in a baking oven at 150 ℃ to obtain a suspension, centrifuging the obtained suspension, washing with deionized water, 10% acetic acid solution, deionized water and absolute ethyl alcohol respectively, drying a filter cake at 80 ℃, sealing a bag, placing in a dryer for storage, and carrying out ball milling for 10-15 minutes to obtain PZT piezoelectric ceramic powder with the particle size of 0.3 mu m.
Preparation 8 (comparative)
Preparation 8 differs from preparation 7 in that: s1.2, according to the expression of PZT powderThe method comprises the following steps: pbZr (PbZr) 0.55 Ti 0.45 O 3 Respectively measuring the stoichiometric ratio of the titanium tetrachloride aqueous solution, the zirconium oxychloride aqueous solution and the lead nitrate aqueous solution prepared in the step S1.1, adding the titanium tetrachloride aqueous solution and the zirconium oxychloride aqueous solution into a three-necked bottle, preheating for 10min in a water bath at 65 ℃, dropwise adding the lead nitrate aqueous solution at 0.2g/min under the stirring condition of 1400r/min, stirring for 15min, and then adding 25% ammonia water to adjust the pH value of the solution to 9 to obtain a mixed solution.
Preparation example 9
Preparation 9 differs from preparation 7 in that:
the preparation of the piezoelectric ceramic powder comprises the following steps:
s1.1, preparing a titanium tetrachloride aqueous solution, a zirconium oxychloride aqueous solution and a lead nitrate aqueous solution, wherein the molar concentration of the titanium tetrachloride aqueous solution is 0.5mol/L, the molar concentration of the zirconium oxychloride aqueous solution is 1mol/L, and the molar concentration of the lead nitrate aqueous solution is 2mol/L;
the preparation method of the titanium tetrachloride aqueous solution comprises the following steps: adding ice cubes solidified by deionized water into a beaker, adding 50ml of hydrochloric acid, accurately measuring 14ml of titanium tetrachloride liquid by a pipette, slowly adding titanium tetrachloride under a magnetic stirring state, and finally obtaining a clear and transparent solution, wherein the titanium tetrachloride solution is a solution cooled in a refrigerator, the whole preparation process is carried out in an ice-water mixture state, and finally 250ml of 0.5mol/L titanium tetrachloride aqueous solution is obtained, and then the solution is put into a dryer for storage for standby;
s1.2, according to the expression of the PZT powder, the method comprises the following steps: pb 0.99 Sm 0.01 Zr 0.52 Ti 0.48 O 3 Respectively measuring the stoichiometric ratio of the titanium tetrachloride aqueous solution, the zirconium oxychloride aqueous solution and the lead nitrate aqueous solution prepared in the step S1.1, adding the titanium tetrachloride aqueous solution and the zirconium oxychloride aqueous solution into a three-necked bottle, preheating for 10min in a water bath at 65 ℃, dropwise adding the lead nitrate aqueous solution at 0.2g/min under the stirring condition of 1400r/min, stirring for 15min, and then adding 25% ammonia water to adjust the pH value of the solution to 9 to obtain a mixed solution;
S1.3, preserving the heat of the mixed solution prepared in the step S1.2 for 30min, centrifuging, washing the obtained filter cake for 3 times by using a mixed solvent (ethanol water solution prepared in a volume ratio of 1:1), then placing the filter cake in the mixed solvent again, adding a mineralizer CaO, wherein the concentration of the mineralizer in the mixed solution is 2mol/L, and then magnetically stirring and dispersing the filter cake for 25min to obtain precursor slurry;
s1.4, putting the precursor slurry obtained in the step S1.3 into a reaction kettle, carrying out solvothermal reaction for 8 hours in a baking oven at 150 ℃ to obtain a suspension, centrifuging the obtained suspension, washing with deionized water, 10% acetic acid solution, deionized water and absolute ethyl alcohol respectively, drying a filter cake at 80 ℃, sealing a bag, placing in a dryer for storage, and ball-milling for 10-15 minutes to obtain PZT piezoelectric ceramic powder with the particle size of 0.3 mu m;
s1.5, according to the expression of the PZT powder, the method comprises the following steps: pb 0.99 Sm 0.01 Zr 0.52 Ti 0.48 O 3 The stoichiometric ratio of the PZT piezoelectric ceramic powder in S1.4 and samarium carbonate are respectively measured, the mixture is placed in a muffle furnace for calcination after being uniformly mixed, the calcination temperature is 900 ℃ for 3 hours, the mixture is ground for 10 minutes and then is transferred into a planetary ball mill, ball milling is carried out for 12 hours at 200rpm, and Pb with the granularity of 0.5 μm is obtained by screening 0.99 Sm 0.01 Zr 0.52 Ti 0.48 O 3 Piezoelectric ceramic powder.
Preparation example 10
Preparation 10 differs from preparation 9 in that: s1.5, according to the expression of the PZT powder, the method comprises the following steps: pb 0.98 Sm 0.02 Zr 0.52 Ti 0.48 O 3 The stoichiometric ratio of the PZT piezoelectric ceramic powder in S1.4 and samarium carbonate are respectively measured, the mixture is placed in a muffle furnace for calcination after being uniformly mixed, the calcination temperature is 900 ℃ for 3 hours, the mixture is ground for 10 minutes and then is transferred into a planetary ball mill, ball milling is carried out for 12 hours at 200rpm, and Pb with the granularity of 0.5 μm is obtained by screening 0.98 Sm 0.02 Zr 0.52 Ti 0.48 O 3 Piezoelectric ceramic powder.
PREPARATION EXAMPLE 11
Preparation 11 differs from preparation 9 in that: s1.5, according to the expression of the PZT powder, the method comprises the following steps: pb 0.97 Sm 0.03 Zr 0.52 Ti 0.48 O 3 The stoichiometric ratio of the PZT piezoelectric ceramic powder in S1.4 and samarium carbonate are respectively measured, the mixture is placed in a muffle furnace for calcination after being uniformly mixed, the calcination temperature is 900 ℃ for 3 hours, the mixture is ground for 10 minutes and then is transferred into a planetary ball mill, ball milling is carried out for 12 hours at 200rpm, and Pb with the granularity of 0.5 μm is obtained by screening 0.97 Sm 0.03 Zr 0.52 Ti 0.48 O 3 Piezoelectric ceramic powder.
Preparation example 12
Preparation 12 differs from preparation 9 in that: s1.5, according to the expression of the PZT powder, the method comprises the following steps: pb 0.96 Sm 0.04 Zr 0.52 Ti 0.48 O 3 The stoichiometric ratio of the PZT piezoelectric ceramic powder in S1.4 and samarium carbonate are respectively measured, the mixture is placed in a muffle furnace for calcination after being uniformly mixed, the calcination temperature is 900 ℃ for 3 hours, the mixture is ground for 10 minutes and then is transferred into a planetary ball mill, ball milling is carried out for 12 hours at 200rpm, and Pb with the granularity of 0.5 μm is obtained by screening 0.96 Sm 0.04 Zr 0.52 Ti 0.48 O 3 Piezoelectric ceramic powder.
Preparation example 13
Preparation 13 differs from preparation 9 in that: s1.5, according to the expression of the PZT powder, the method comprises the following steps: pb 0.95 Sm 0.05 Zr 0.52 Ti 0.48 O 3 The stoichiometric ratio of the PZT piezoelectric ceramic powder in S1.4 and samarium carbonate are respectively measured, the mixture is placed in a muffle furnace for calcination after being uniformly mixed, the calcination temperature is 900 ℃ for 3 hours, the mixture is ground for 10 minutes and then is transferred into a planetary ball mill, ball milling is carried out for 12 hours at 200rpm, and Pb with the granularity of 0.5 μm is obtained by screening 0.95 Sm 0.05 Zr 0.52 Ti 0.48 O 3 Piezoelectric ceramic powder.
Preparation 14 (comparative)
Preparation 14 differs from preparation 9 in that: s1.5, according to the expression of the PZT powder, the method comprises the following steps: pb 0.94 Sm 0.06 Zr 0.52 Ti 0.48 O 3 The stoichiometric ratio of the PZT piezoelectric ceramic powder in S1.4 and samarium carbonate are respectively measured, the mixture is placed in a muffle furnace for calcination after being uniformly mixed, the calcination temperature is 900 ℃ for 3 hours, the mixture is ground for 10 minutes and then is transferred into a planetary ball mill, ball milling is carried out for 12 hours at 200rpm, and Pb with the granularity of 0.5 μm is obtained by screening 0.94 Sm 0.06 Zr 0.52 Ti 0.48 O 3 Piezoelectric ceramic powder.
Examples
Example 1
A micro classifier impeller for processing ceramic powder for copper-clad plates is prepared from the following raw materials in parts by weight: 100 parts of piezoelectric ceramic particles and 26.8 parts of the first binder in preparation example 1. The particle size of the piezoelectric ceramic particles is controlled to be 40-60 meshes. The piezoelectric ceramic particles are mainly prepared by granulating piezoelectric ceramic powder and a second binder. The piezoelectric ceramic powder in preparation example 7 was used as the piezoelectric ceramic powder. The second binder is a 5wt% strength PVA solution.
A manufacturing method of a micro classifier impeller for processing ceramic powder for a copper-clad plate comprises the following steps:
s1, a preparation method of piezoelectric ceramic particles comprises the following steps:
s1.1, preparing piezoelectric ceramic powder, see preparation example 7;
s1.2, placing the piezoelectric ceramic powder in S1.1 into a planetary ball mill for ball milling, wherein the inner container of the planetary ball mill is made of polytetrafluoroethylene, the grinding balls are 95 zirconia beads, the ball milling speed is 200rpm, and the piezoelectric ceramic powder with the D50 of 0.3-1 mu m is obtained after ball milling for 8 hours;
s1.3, granulating, wherein a second binder PVA solution with the concentration of 5wt% accounting for 10wt% of the total mass of the piezoelectric ceramic powder is added into the piezoelectric ceramic powder in S1.2, the mixture is placed into a granulator for granulating, the obtained granules are transported to a grinder for grinding for 30min, the obtained grinding powder is pressed into large blocks by a pressing machine, the large blocks are 6cm x 1cm and placed for 24h, the large blocks are crushed into powder, the powder is placed into a planetary ball mill for ball milling at the speed of 200rpm for 2h, the obtained ball milling powder is placed into the granulator for secondary granulating, and the obtained ball milling powder is screened to obtain ceramic particles with good fluidity, and the granularity is controlled between 40 and 60 meshes;
s2, press forming: performing compression molding by a hydraulic powder molding machine, wherein the pressure is set to 180Mpa, and the compression time is set to 360s, so as to obtain a green body impeller;
S3, discharging glue and sintering: heating the green body impeller to 540 ℃ at 0.2 ℃/min, preserving heat for 3 hours, removing the binder, sealing the crucible, burying powder, sintering, heating to 1280 ℃ at 0.5 ℃/min, preserving heat for 125 minutes, cooling to 650 ℃ at 2.5 ℃/min, and naturally cooling in a furnace to obtain the piezoelectric ceramic impeller;
s4, polarization treatment of the piezoelectric ceramic impeller, and polarization environment: and (3) silicon oil, wherein the polarization voltage is 4.5kV, the polarization temperature is 120 ℃, the polarization time is 30min, the leakage current is 0.04mA-0.38mA in the polarization process, two electrodes are manufactured at the front end and the rear end of the piezoelectric ceramic impeller after the polarization is completed, electrode leads are respectively connected with the electrodes at the front end and the rear end of the piezoelectric ceramic impeller, insulating impregnating resin is poured around the connection of the electrodes and the electrode leads, the electrodes are solidified, and 500# abrasive paper, 1000# abrasive paper, 1500# abrasive paper and 2000# abrasive paper are sequentially adopted to polish the electrodes to the surface to be smooth, so that the finished micro classifier impeller is obtained. The insulating impregnating resin is commercially available epoxy resin pouring sealant, and has an insulating safety effect.
Example 2
Example 2 differs from example 1 in that: the piezoelectric ceramic particles are mainly prepared by granulating 100 parts of piezoelectric ceramic powder and 12.8 parts of second binder. The piezoelectric ceramic powder in preparation example 7 was used as the piezoelectric ceramic powder. The second binder was the second binder prepared in preparation example 2.
S1.3, granulating, wherein 1000g of piezoelectric ceramic powder in S1.2 is granulated by using 128g of the second binder prepared in preparation example 2, the obtained granules are transported to a grinder for grinding for 30min, the obtained ground powder is pressed into large blocks by a pressing machine, the large blocks have the specification of 6cm x 1cm, the large blocks are placed for 24 hours, the large blocks are crushed into powder, the powder is placed in a planetary ball mill for ball milling at the speed of 200rpm for 2 hours, the obtained ball milling powder is placed in the granulator for secondary granulation, and the obtained ball milling powder is screened to obtain ceramic particles with good fluidity, and the granularity is controlled between 40 and 60 meshes.
Example 3
Example 3 differs from example 2 in that: the piezoelectric ceramic particles are mainly prepared by granulating piezoelectric ceramic powder and a second binder. The piezoelectric ceramic powder in preparation example 7 was used as the piezoelectric ceramic powder. The second binder was the second binder prepared in preparation example 3.
Example 4
Example 4 differs from example 2 in that: the piezoelectric ceramic powder in preparation example 9 was used as the piezoelectric ceramic powder.
Example 5
Example 5 differs from example 2 in that: the piezoelectric ceramic powder in preparation example 10 was used as the piezoelectric ceramic powder.
Example 6
Example 6 differs from example 2 in that: the piezoelectric ceramic powder in preparation example 11 was used as the piezoelectric ceramic powder.
Example 7
Example 7 differs from example 2 in that: the piezoelectric ceramic powder in preparation example 12 was used as the piezoelectric ceramic powder.
Example 8
Example 8 differs from example 2 in that: the piezoelectric ceramic powder in preparation example 13 was used as the piezoelectric ceramic powder.
Example 9
Example 9 differs from example 5 in that: the piezoelectric ceramic particles are prepared from the following raw materials in parts by weight: 100 parts of Pb of 0.5 μm in preparation example 10 0.98 Sm 0.02 Zr 0.52 Ti 0.48 O 3 12.8 parts of the second binder in preparation example 2, 1.2 parts of the functional powder in preparation example 4, 0.6 part of the functional short fiber in preparation example 5 and 0.25 part of the functional whisker in preparation example 6.
A manufacturing method of a micro classifier impeller for processing ceramic powder for a copper-clad plate comprises the following steps:
s1, a preparation method of piezoelectric ceramic particles comprises the following steps:
s1.1, preparing piezoelectric ceramic powder, see preparation example 10;
s1.2, placing the piezoelectric ceramic powder in S1.1 into a planetary ball mill for ball milling, wherein the inner container of the planetary ball mill is made of polytetrafluoroethylene, the grinding balls are 95 zirconia balls, the ball milling speed is 200rpm, screening is carried out after ball milling for 8 hours to obtain piezoelectric ceramic powder with the D50 of 0.3-1 mu m, weighing 1000g of the piezoelectric ceramic powder in S1.1 after ball milling, adding into a high-speed dispersion kettle, dispersing for 100S at 300rpm in advance, then adding 12g of the functional powder in preparation example 4, 6g of the functional short fiber in preparation example 5 and 2.5g of the functional whisker in preparation example 6, adjusting the ball milling speed to 120rpm, and dispersing for 5min to obtain a mixture;
S1.3, granulating, wherein 128g of the second binder prepared in the preparation example 2 is adopted in the mixture in S1.2 for granulation, the obtained granules are transported to a grinder for grinding for 30min, the obtained ground powder is pressed into large blocks by a pressing machine, the large blocks have the specification of 6cm x 1cm, the large blocks are placed for 24h, the large blocks are crushed into powder, the powder is placed in a planetary ball mill for ball milling at 200rpm, the ball milling speed is 2h, the obtained ball milling powder is placed in the granulator for secondary granulation, ceramic particles with good fluidity are obtained through sieving, and the granularity is controlled between 40 and 60 meshes;
s2, press forming: performing compression molding by a hydraulic powder molding machine, wherein the pressure is set to 180Mpa, and the compression time is set to 360s, so as to obtain a green body impeller;
s3, discharging glue and sintering: heating the green body impeller to 550 ℃ at 0.25 ℃/min, preserving heat for 3 hours, removing the binder, sealing and embedding powder by a crucible, sintering, heating to 1280 ℃ at 0.5 ℃/min, preserving heat for 125 minutes, cooling to 650 ℃ at 2.5 ℃/min, and naturally cooling in a furnace to obtain the piezoelectric ceramic impeller.
Example 10
Example 10 differs from example 1 in that: s3, discharging glue and sintering: heating the green body impeller to 540 ℃ at 0.2 ℃/min, preserving heat for 3 hours, removing the binder, sealing and embedding powder by a crucible, sintering, heating to 1200 ℃ at 0.5 ℃/min, preserving heat for 125 minutes, cooling to 650 ℃ at 2.5 ℃/min, and opening a furnace for natural cooling to obtain the piezoelectric ceramic impeller.
Example 11
Example 11 differs from example 1 in that:
s3, discharging glue and sintering: heating the green body impeller to 540 ℃ at 0.2 ℃/min, preserving heat for 3 hours, removing the binder, sealing the crucible, burying powder, sintering, heating to 1240 ℃ at 0.5 ℃/min, preserving heat for 125 minutes, cooling to 650 ℃ at 2.5 ℃/min, and opening the furnace for natural cooling to obtain the piezoelectric ceramic impeller.
Example 12
Example 12 differs from example 1 in that:
s3, discharging glue and sintering: heating the green body impeller to 540 ℃ at 0.2 ℃/min, preserving heat for 3 hours, removing the binder, sealing and embedding powder by a crucible, sintering, heating to 1320 ℃ at 0.5 ℃/min, preserving heat for 125 minutes, cooling to 650 ℃ at 2.5 ℃/min, and opening a furnace for natural cooling to obtain the piezoelectric ceramic impeller.
Example 13
Example 13 differs from example 9 in that: the outer surface of the piezoelectric ceramic impeller is vapor deposited with a silicon oxide coating of 1+/-0.005 microns by a PVD physical vapor deposition process. And connecting areas between the electrodes and the wires are reserved at two ends of the piezoelectric ceramic impeller, the connecting areas are protected, and a silicon oxide coating is not plated. The Mohs hardness of the implementation is 8 and the friction coefficient is 0.35 under the improvement of the silicon oxide coating, so that the requirements of the impeller of the micro classifier can be better met.
Comparative example
Comparative example 1
Comparative example 1 differs from example 1 in that: the piezoelectric ceramic powder in preparation example 8 was used as the piezoelectric ceramic powder.
Comparative example 2
Comparative example 2 differs from example 1 in that: the piezoelectric ceramic powder in preparation example 14 was used as the piezoelectric ceramic powder.
Comparative example 3
Comparative example 3 differs from example 1 in that:
s3, discharging glue and sintering: heating the green body impeller to 540 ℃ at 0.2 ℃/min, preserving heat for 3 hours, removing the binder, sealing and embedding powder by a crucible, sintering, heating to 1360 ℃ at 0.5 ℃/min, preserving heat for 125 minutes, cooling to 650 ℃ at 2.5 ℃/min, and opening the furnace for natural cooling to obtain the piezoelectric ceramic impeller.
Comparative example 4
Comparative example 4 differs from example 1 in that:
s3, discharging glue and sintering: heating the green body impeller to 540 ℃ at 0.2 ℃/min, preserving heat for 3 hours, removing the binder, sealing and embedding powder by a crucible, sintering, heating to 1150 ℃ at 0.5 ℃/min, preserving heat for 125 minutes, cooling to 650 ℃ at 2.5 ℃/min, and opening a furnace for natural cooling to obtain the piezoelectric ceramic impeller.
Performance test
Detection method/test method
1. Dielectric property test: analysis of the internal polarization of a material may use a dielectric constant that reflects the dielectric properties of the material, generally denoted epsilon. The relative dielectric constant is typically used. Measuring the thickness D of a sample, measuring the diameter D, testing the capacitance value C and the dielectric loss value of the sample at 1KHz by using an Agilent4284A precise impedance analyzer, and calculating the relative dielectric constant according to a formula:
Wherein A is the surface area, ε, of the sample 0 ≈8.85×10 -12 F/m is the vacuum dielectric constant value.
2. Piezoelectric performance test: by Sinocera brand YE2730 type d 33 The tester tests the piezoelectric constant.
Testing the parallel resonance frequency fp and the series resonance frequency fs, and calculating an electromechanical coupling coefficient according to a formula:
3. dielectric loss tan delta test: dielectric losses occur due to the polarization relaxation of the medium under an alternating electric field, resulting in the formation of an electric displacement density always lagging by a phase angle delta. It reflects the energy loss of a material due to heat generation per unit time under the action of an electric field, and is generally expressed by the loss tangent tan delta.
The test conditions were 1KHz. Test equipment: dielectric constant and dielectric loss tester STD-C.
4. Mohs hardness test: the surface of the tested mineral was scored with a pyramid-shaped diamond pin by scoring and the depth of the score, the depth of the score being the mohs hardness, indicated by the symbol HM. The application adopts a Mohs hardness tester to test the Mohs hardness of the impeller. In addition, the application uses HV-1000 automatic turret microhardness tester for testing. Friction coefficient test: the test was performed using an MXD-02 coefficient of friction meter.
5. Mechanical strength test:
Test subjects test specimens were prepared for blue books using the preparation methods provided in examples 1-12 and comparative examples 1-4. The test specimens differ from examples 1-12 and comparative examples 1-4 in the use of a mold. Examples 1-12 and comparative examples 1-4 were prepared in the shape of impellers and test samples were prepared as 80mm by 60mm by 3mm test piezoelectric ceramic wafers.
The preparation of the test sample, the specific preparation method is different from the preparation method of the impeller of the application in that:
s2, press forming: performing compression molding by a hydraulic powder molding machine, wherein the pressure is set to 180Mpa, the compression time is set to 360s, and the test green ceramic sheet with the specification of 80mm 60mm 3mm is obtained; s3, discharging glue and sintering: heating the test green ceramic sheet to 540 ℃ at 0.2 ℃/min, preserving heat for 3 hours, removing the binder, sealing the crucible, burying powder, sintering, heating to 1280 ℃ at 0.5 ℃/min, preserving heat for 125 minutes, cooling to 650 ℃ at 2.5 ℃/min, and naturally cooling in a furnace to obtain the test ceramic sheet; s4, testing the polarization treatment and polarization environment of the ceramic plate: and (3) silicon oil with a polarization voltage of 4.5kV, a polarization temperature of 120 ℃ and a polarization time of 30min, wherein leakage current in the polarization process is 0.04mA-0.38mA, and a finished product test ceramic wafer is obtained.
The testing method is tested according to the static bending strength of the piezoelectric ceramic material performance testing method of national standard GB/T1 1387-2008 of the people's republic of China.
6. Actual measurement: test subjects the impellers in examples 1, 9, 13 and impellers made with mill steel (consistent with the impeller shapes in examples 1, 9, 13). In the test method, the impellers in examples 1, 9 and 13 and the impellers prepared from the grinding tool steel are loaded in a micro classifier, the blocky calcium carbonate is respectively ground for 3.0h, and whether blocking and sticky powder occur at the impellers or not is observed.
Data analysis
Table 1 shows the detection parameters of examples 1 to 12 and comparative examples 1 to 4
Table 1 shows the detection parameters of examples 1 to 12 and comparative examples 1 to 4
Table 3 shows the parameters measured for examples 1, 9, and 13 and for the grinding wheel made of steel
| Observation conditions | |
| Example 1 | Non-blocking adhesive powder |
| Example 9 | Non-blocking adhesive powder |
| Example 13 | Non-blocking adhesive powder |
| Grinding tool steel impeller | Non-blocking but surface-sticky small amount of powder |
It can be seen from the combination of examples 1 to 12 and comparative examples 1 to 4 and the combination of table 1 that the dielectric properties and piezoelectric properties of example 3 are slightly better than those of example 2 and example 1, and therefore, the use of the second binder in preparation examples 2 to 3 positively contributes to the improvement of the dielectric properties and piezoelectric properties of the whole impeller of the micro classifier.
As can be seen from the combination of examples 1 to 12 and comparative examples 1 to 4 and Table 1, the dielectric properties and piezoelectric properties of example 1 are superior to those of comparative example 1, and therefore PbZr y Ti (1-y) O 3 When y=0.48, the impeller of the micro classifier has excellent dielectric and piezoelectric properties and small dielectric loss.
As can be seen from the combination of examples 1 to 12 and comparative examples 1 to 4 and Table 1, the dielectric properties and piezoelectric properties of examples 4 to 8 are superior to those of comparative example 2, and the dielectric loss of examples 4 to 8 is smaller than that of comparative example 2, pb (1－x) Sm x Zr y Ti (1-y) O 3 When x=0 to 0.05 and y=0.48, the dielectric performance and piezoelectric performance of the whole impeller of the micro classifier are excellent, and the dielectric loss is small.
As can be seen in combination with examples 1-12 and comparative examples 1-4 and in combination with table 1, the dielectric properties and piezoelectric properties of example 1 are better than those of examples 10-12, and the dielectric loss of example 1 is smaller than that of examples 10-12; the dielectric properties and piezoelectric properties of examples 1, 10-12 are superior to those of comparative examples 3-4, and the dielectric losses of examples 1, 10-12 are smaller than those of comparative examples 3-4, so that the sintering temperature is controlled at 1280 ℃, and the dielectric properties and piezoelectric properties of the whole impeller of the prepared micro classifier are superior and the dielectric losses are smaller.
As can be seen from the combination of examples 1 to 12 and comparative examples 1 to 4 and the combination of Table 1, pb of tetragonal perovskite structure was prepared by hydrothermal synthesis 0.98 Sm 0.02 Zr 0.52 Ti 0.48 O 3 When the sintering temperature is 1280 ℃, PSm x ZT ceramics have optimal overall electrical properties: piezoelectric constant d 33 =232 pC/N, relative dielectric constant ε r The dielectric loss tan delta=0.22 is taken as the piezoelectric vibrating element of the ultrasonic transducer, and the impeller generates vibration with certain amplitude in the use process, so that the phenomenon of blocking or sticking of materials at the impeller can not occur.
As can be seen in combination with examples 1-12 and comparative examples 1-4 and in combination with table 1,pb with tetragonal perovskite structure prepared by hydrothermal synthesis method 0.98 Sm 0.02 Zr 0.52 Ti 0.48 O 3 When the sintering temperature is 1280 ℃, PSm x ZT ceramics have optimal overall electrical properties: piezoelectric constant d 33 =229 pC/N, relative permittivity ε r The dielectric loss tan delta=0.16 is taken as the piezoelectric vibrating element of the ultrasonic transducer, and the impeller generates vibration with certain amplitude in the use process, so that the phenomenon of blocking or sticking of materials at the impeller can not occur.
As can be seen from the combination of examples 1 to 12 and comparative examples 1 to 4 and the combination of Table 1, pb of tetragonal perovskite structure was prepared by hydrothermal synthesis 0.98 Sm 0.02 Zr 0.52 Ti 0.48 O 3 Impeller of micro classifier prepared by combining functional powder in preparation example 4, functional short fiber in preparation example 5 and functional whisker in preparation example 6, when sintering temperature is 1280 ℃, PSm x ZT ceramics have optimal overall electrical properties: piezoelectric constant d 33 Relative permittivity ε =243 pC/N r The dielectric loss tan delta=0.18 is used as a piezoelectric vibrating element of the ultrasonic transducer, and the impeller generates vibration with certain amplitude in the use process, so that the phenomenon of blocking or sticking of materials at the impeller is avoided.
As can be seen by combining examples 1-12 and comparative examples 1-4 and combining tables 1-3, the application not only has better piezoelectric performance, but also generates vibration with certain amplitude in the use process, so that the phenomenon of blocking or sticking of materials at the impeller can not occur; in addition, the application has relatively long mechanical property and service life.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (7)
1. A fine classifier impeller for processing ceramic powder for copper-clad plate which characterized in that: is composed of the following components by weightThe raw materials are prepared as follows: 100 parts of piezoelectric ceramic particles and 20-40 parts of first binder; the piezoelectric ceramic particles are mainly prepared by granulating piezoelectric ceramic powder and a second binder; the particle size of the piezoelectric ceramic particles is controlled to be 40-60 meshes; the piezoelectric ceramic powder is prepared by adopting a hydrothermal synthesis method, and the expression of the piezoelectric ceramic powder is Pb （1－x） Sm x Zr 0.52 Ti 0.48 O 3 X=0.02; the grain diameter D50 of the piezoelectric ceramic powder is controlled to be 0.3-0.5 mu m;
the preparation method of the piezoelectric ceramic particles comprises the following steps:
s1, preparing piezoelectric ceramic powder;
s1.1, preparing a titanium tetrachloride aqueous solution, a zirconium oxychloride aqueous solution and a lead nitrate aqueous solution, wherein the molar concentration of the titanium tetrachloride aqueous solution is 0.5mol/L, the molar concentration of the zirconium oxychloride aqueous solution is 1mol/L, and the molar concentration of the lead nitrate aqueous solution is 2mol/L;
s1.2, according to the expression of the PZT powder, the method comprises the following steps: pb （1－x） Sm x Zr 0.52 Ti 0.48 O 3 Respectively measuring the stoichiometric ratio of the titanium tetrachloride aqueous solution, the zirconium oxychloride aqueous solution and the lead nitrate aqueous solution prepared in the step S1.1, adding the titanium tetrachloride aqueous solution and the zirconium oxychloride aqueous solution into a three-necked bottle, preheating for 5-10min in a water bath at 50-70 ℃, dropwise adding the lead nitrate aqueous solution at 0.1-0.2g/min under the stirring condition of 1200-1500r/min, stirring for 10-20min, and then adding ammonia water with the concentration of 25% to adjust the pH value of the solution to 8-10 to obtain a mixed solution;
s1.3, preserving heat for 20-40min, centrifuging, washing the obtained filter cake with a mixed solvent for 2-3 times, placing the filter cake in the mixed solvent again, adding a mineralizer, wherein the concentration of the mineralizer in the mixed liquid is 0.5-4mol/L, and dispersing for 25-35min by magnetic stirring to obtain precursor slurry;
S1.4, putting the precursor slurry obtained in the step S1.3 into a reaction kettle, carrying out solvothermal reaction for 2-20h in a baking oven at 130-190 ℃ to obtain suspension, centrifuging the obtained suspension, washing with deionized water, 10% acetic acid solution, deionized water and absolute ethyl alcohol respectively, drying filter cakes at 80-85 ℃, sealing bags, placing into a dryer for storage, and ball-milling for 10-15min to obtain PZT piezoelectric ceramic powder;
s1.5, mixing and calcining, grinding and sieving the PZT piezoelectric ceramic powder with the concentration of 99.5-100% and the samarium carbonate with the concentration of 0-0.05% to obtain Pb （1－x） Sm x Zr 0.52 Ti 0.48 O 3 Piezoelectric ceramic powder;
s2, ball milling and screening to obtain piezoelectric ceramic powder with D50 of 0.3-0.5 mu m;
s3, granulating, wherein a second binder PVA solution with the concentration of 3-5wt% is added into the piezoelectric ceramic powder in the S2, the dosage of the second binder PVA solution is 8-10wt% of the total mass of the piezoelectric ceramic powder, granulating, grinding the obtained granules for 30-40min, pressing the obtained granules into large blocks, standing for 24h, crushing the large blocks into powder, granulating for the second time, and sieving to obtain ceramic particles with good fluidity.
2. The micro classifier impeller for processing ceramic powder for copper-clad plate according to claim 1, wherein: the piezoelectric ceramic particles are mainly prepared from piezoelectric ceramic powder, a second binder, functional powder, functional short fibers and functional whiskers; the mass of the functional powder is 0.003-0.015 times of that of the piezoelectric ceramic powder; the mass of the functional short fiber is 0.002-0.01 times of the mass of the piezoelectric ceramic powder; the mass of the functional whisker is 0.001-0.004 times of that of the piezoelectric ceramic powder; the second binder is prepared from organic silicon resin, modified siloxane, diethylenetriamine and a diluting solvent, and the solid content is 40-50%; the modified siloxane is one or a combination of more of fluorine-containing siloxane, FM-3311 siloxane, FM-4411 siloxane, FM-7711 siloxane, FM-0411 siloxane, FM-DA11 siloxane, FM-0711 siloxane and TM-0701T siloxane; the preparation method of the second binder comprises the steps of firstly preparing raw materials, uniformly stirring the organic silicon resin and the modified siloxane, preheating to 70-75 ℃, reacting for 2-3min in advance, cooling to below 10 ℃, adding a diluting solvent, uniformly stirring, finally adding diethylenetriamine, and uniformly stirring to obtain the finished second binder.
3. The micro classifier impeller for processing ceramic powder for copper-clad plate according to claim 2, wherein: the functional powder is one or a combination of more of silicon nitride powder, cubic boron nitride powder, zirconium oxide, calcium oxide, cerium oxide, magnesium oxide and yttrium oxide; the functional powder D50 is 1-5 microns; the functional short fiber is one or a combination of more of silicon nitride fiber, aluminum oxide fiber and boron nitride fiber; the length of the functional short fiber is 1-10 micrometers; the functional whisker is one or a combination of more of silicon nitride whisker, potassium titanate whisker and zinc oxide whisker.
4. The micro classifier impeller for processing ceramic powder for copper-clad plate according to claim 2, wherein: the piezoelectric ceramic particles are prepared from the following raw materials in parts by weight: 100 parts of piezoelectric ceramic powder, 10-15 parts of second binder, 1-1.2 parts of functional powder, 0.4-0.6 part of functional short fiber and 0.2-0.25 part of functional whisker; the functional powder consists of cubic boron nitride powder, zirconia and cerium oxide; the mass ratio of the cubic boron nitride powder to the zirconia to the cerium oxide is (80-200): 100: (1-3); the functional short fiber is prepared from silicon nitride fiber and boron nitride fiber according to the mass ratio of 1:1, the composition is as follows; the functional whisker is prepared from silicon nitride whisker, potassium titanate whisker and zinc oxide whisker according to the mass ratio of 1: (0.2-0.8): 1.
5. The micro classifier impeller for processing ceramic powder for copper-clad plate according to claim 1, wherein: the first binder is mainly prepared from main components, injection molding grade polyolefin PP, compatilizer EVA, lubricant, dispersing agent and antioxidant; the main component is copolyformaldehyde POM, and the number average molecular weight is 2-4 ten thousand; the lubricant is a CBT resin polymer with a hyperbranched structure; the preparation method of the first adhesive comprises the steps of mixing main components, polyolefin PP, compatilizer EVA, lubricant, dispersing agent and antioxidant at 0-4 ℃ for 10-15min at 300-400rpm to obtain the finished first adhesive.
6. A method for manufacturing an impeller of a micro-classifier according to any one of claims 1 to 5, characterized in that: the method comprises the following steps:
s1, preparing piezoelectric ceramic powder;
s2, ball milling and screening to obtain piezoelectric ceramic powder with D50 of 0.3-0.5 mu m;
s3, granulating, namely adding a second binder into the piezoelectric ceramic powder in the step S2, granulating, grinding the obtained granules for 30-40min, pressing into large blocks, standing for 24h, crushing into powder, granulating for the second time, and sieving to obtain piezoelectric ceramic particles with good fluidity;
S4, press forming: performing compression molding by a hydraulic powder molding machine, wherein the pressure is set to be 150-180Mpa, and the compression time is set to be 300-360s, so as to obtain a green body impeller;
s5, discharging glue and sintering: heating the green body impeller to 520-550 ℃ at 0.2-0.4 ℃/min, preserving heat for 3-3.2h, removing the binder, sealing the crucible, burying powder, sintering, heating to 1200-1320 ℃ at 0.5-0.6 ℃/min, preserving heat for 2-2.5h, and obtaining the piezoelectric ceramic impeller;
s6, carrying out polarization treatment on the piezoelectric ceramic impeller, then manufacturing two electrodes at the front end and the rear end of the piezoelectric ceramic impeller, respectively connecting electrode leads to the electrodes at the front end and the rear end of the piezoelectric ceramic impeller, pouring insulating impregnating resin around the connection of the electrodes and the electrode leads, and curing to obtain the finished micro classifier impeller.
7. The method for manufacturing a micro classifier impeller for processing ceramic powder for copper-clad plate according to claim 6, wherein: s4, pressing and forming: performing compression molding by a hydraulic powder molding machine, wherein the pressure is set to 180Mpa, and the compression time is set to 360s, so as to obtain a green body impeller; the rubber discharging and sintering are carried out: heating the green body impeller to 540 ℃ at 0.2 ℃/min, preserving heat for 3 hours, removing the binder, sealing and embedding powder by a crucible, sintering, heating to 1280 ℃ at 0.5 ℃/min, preserving heat for 125 minutes, cooling to 650 ℃ at 2.0-2.5 ℃/min, and opening a furnace for natural cooling to obtain the piezoelectric ceramic impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210921811.XA CN115254610B (en) | 2022-08-02 | 2022-08-02 | Fine classifier impeller for processing ceramic powder for copper-clad plate and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210921811.XA CN115254610B (en) | 2022-08-02 | 2022-08-02 | Fine classifier impeller for processing ceramic powder for copper-clad plate and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115254610A CN115254610A (en) | 2022-11-01 |
| CN115254610B true CN115254610B (en) | 2023-09-15 |
Family
ID=83746634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210921811.XA Active CN115254610B (en) | 2022-08-02 | 2022-08-02 | Fine classifier impeller for processing ceramic powder for copper-clad plate and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115254610B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63151672A (en) * | 1986-12-17 | 1988-06-24 | 株式会社デンソー | Manufacture of lead zirconate titanate base piezoelectric ceramic |
| JP2006283094A (en) * | 2005-03-31 | 2006-10-19 | Toda Kogyo Corp | Sm-Fe-N MAGNETIC PARTICLE POWDER, ITS MANUFACTURING METHOD, AND BOND MAGNET |
| CN107074661A (en) * | 2014-07-16 | 2017-08-18 | 马国都国际有限责任公司 | Ceramic particle and its manufacture method |
| CN107500751A (en) * | 2017-08-03 | 2017-12-22 | 无锡南理工科技发展有限公司 | The preparation method of nanometer piezoceramic material |
| CN109238312A (en) * | 2018-09-07 | 2019-01-18 | 浙江理工大学 | A kind of preparation method of composite fibre base flexible piezoelectric sensors |
| CN111747740A (en) * | 2020-06-28 | 2020-10-09 | 安徽容知日新科技股份有限公司 | Samarium ion doped lead zirconate titanate based high-performance piezoelectric ceramic and preparation method thereof |
| CN112079592A (en) * | 2020-08-06 | 2020-12-15 | 泰州衡川新能源材料科技有限公司 | Production and preparation process of slurry for coating diaphragm |
| CN114589987A (en) * | 2022-03-17 | 2022-06-07 | 浙江元集新材料有限公司 | High-frequency high-speed high-dielectric low-loss ptfe flexible copper clad laminate and preparation process thereof |
-
2022
- 2022-08-02 CN CN202210921811.XA patent/CN115254610B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63151672A (en) * | 1986-12-17 | 1988-06-24 | 株式会社デンソー | Manufacture of lead zirconate titanate base piezoelectric ceramic |
| JP2006283094A (en) * | 2005-03-31 | 2006-10-19 | Toda Kogyo Corp | Sm-Fe-N MAGNETIC PARTICLE POWDER, ITS MANUFACTURING METHOD, AND BOND MAGNET |
| CN107074661A (en) * | 2014-07-16 | 2017-08-18 | 马国都国际有限责任公司 | Ceramic particle and its manufacture method |
| CN107500751A (en) * | 2017-08-03 | 2017-12-22 | 无锡南理工科技发展有限公司 | The preparation method of nanometer piezoceramic material |
| CN109238312A (en) * | 2018-09-07 | 2019-01-18 | 浙江理工大学 | A kind of preparation method of composite fibre base flexible piezoelectric sensors |
| CN111747740A (en) * | 2020-06-28 | 2020-10-09 | 安徽容知日新科技股份有限公司 | Samarium ion doped lead zirconate titanate based high-performance piezoelectric ceramic and preparation method thereof |
| CN112079592A (en) * | 2020-08-06 | 2020-12-15 | 泰州衡川新能源材料科技有限公司 | Production and preparation process of slurry for coating diaphragm |
| CN114589987A (en) * | 2022-03-17 | 2022-06-07 | 浙江元集新材料有限公司 | High-frequency high-speed high-dielectric low-loss ptfe flexible copper clad laminate and preparation process thereof |
Non-Patent Citations (3)
| Title |
|---|
| 吴盾 ; 秦帅 ; 刘春林 ; 方必军 ; 曹峥 ; 成骏峰 ; .硬脂酸表面改性对PLZT压电陶瓷粉末注射成型性能的影响.无机材料学报.2019,(第05期), * |
| 硬脂酸表面改性对PLZT压电陶瓷粉末注射成型性能的影响;吴盾;秦帅;刘春林;方必军;曹峥;成骏峰;;无机材料学报(第05期) * |
| 钐掺杂PZT基压电陶瓷;郑阳;《现代盐化工》(第2018年01期期);第7-10页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115254610A (en) | 2022-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107265494B (en) | A kind of modified nano zinc oxide | |
| CN106518040B (en) | A kind of synthetic method and ceramic composite powder of ceramic composite powder | |
| EP0563653A1 (en) | Fine flaky boehmite particles and process for the preparation of the same | |
| Kendall | Influence of powder structure on processing and properties of advanced ceramics | |
| CN107473248A (en) | Single dispersing high purity nanometer alumina raw powder's production technology | |
| US5525665A (en) | Co-polymer containing compositions for ceramic processing | |
| JP2015013789A (en) | Classification-finished particle material, method for producing the same, and resin composition | |
| CN103408062B (en) | Gallium aluminium mixes the preparation method of zinc oxide nano powder and high-density high conductance sputtering coating target thereof altogether | |
| CN111868011B (en) | Aluminum nitride plate | |
| CN111533553A (en) | Nanocrystalline barium titanate ceramic and preparation method thereof | |
| EP0168606A2 (en) | Process for producing alumina bodies | |
| CN105836794B (en) | The preparation method of barium carbonate powder | |
| CN115254610B (en) | Fine classifier impeller for processing ceramic powder for copper-clad plate and manufacturing method thereof | |
| KR100482912B1 (en) | Indium oxide-tin oxide powder, preparation method thereof and preparation method of indium oxide-tin oxide sintered body | |
| US5358911A (en) | Polymeric binders for ceramic processing | |
| CN107651957B (en) | Preparation of perovskite structure Pb1-xSnxTiO3Method for producing ceramic powder | |
| CN113880576B (en) | Low sintering temperature and anisotropic strontium barium niobate sodium tungsten bronze type piezoelectric ferroelectric ceramic material and preparation method thereof | |
| Zhu et al. | Texture development in Si3N4 ceramics by magnetic field alignment during slip casting | |
| JP2019210166A (en) | LOW-SODA α-ALUMINA POWDER AND PRODUCTION METHOD THEREOF | |
| CN114479191B (en) | Inorganic filler for PTFE-based copper-clad plate and preparation method thereof | |
| CN1473792A (en) | Process for preparing compound zirconium oxide powder | |
| CN113939477A (en) | Amorphous silica-titania composite oxide powder, resin composition, dispersion liquid, and method for producing silica-coated silica-titania composite oxide powder | |
| WO2004050556A1 (en) | Aluminum hydroxide and method for production thereof | |
| CN111362291A (en) | Preparation method of high-dispersion barite | |
| CN115290153A (en) | Venturi nozzle of disc type air flow mill for processing copper-clad plate powder and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |