CN116768609A - Application of tape casting formed firing-supporting raw porcelain in preparation of electronic ceramics - Google Patents
Application of tape casting formed firing-supporting raw porcelain in preparation of electronic ceramics Download PDFInfo
- Publication number
- CN116768609A CN116768609A CN202310738706.7A CN202310738706A CN116768609A CN 116768609 A CN116768609 A CN 116768609A CN 202310738706 A CN202310738706 A CN 202310738706A CN 116768609 A CN116768609 A CN 116768609A
- Authority
- CN
- China
- Prior art keywords
- powder
- ball milling
- alumina
- ceramic
- product
- 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.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 120
- 229910052573 porcelain Inorganic materials 0.000 title claims abstract description 42
- 238000010345 tape casting Methods 0.000 title claims description 5
- 238000002360 preparation method Methods 0.000 title description 17
- 239000000843 powder Substances 0.000 claims abstract description 94
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 87
- 238000005245 sintering Methods 0.000 claims abstract description 68
- 239000003522 acrylic cement Substances 0.000 claims abstract description 53
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 33
- 239000010431 corundum Substances 0.000 claims abstract description 33
- 239000002994 raw material Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 14
- 239000002904 solvent Substances 0.000 claims abstract description 10
- 238000000498 ball milling Methods 0.000 claims description 69
- 239000002002 slurry Substances 0.000 claims description 37
- 238000005266 casting Methods 0.000 claims description 29
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Natural products CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 25
- 238000010304 firing Methods 0.000 claims description 25
- 239000002245 particle Substances 0.000 claims description 24
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 18
- 239000003960 organic solvent Substances 0.000 claims description 17
- 239000012752 auxiliary agent Substances 0.000 claims description 13
- 229920005822 acrylic binder Polymers 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical group CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 10
- 239000004014 plasticizer Substances 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 6
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims description 6
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 230000009477 glass transition Effects 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 125000003944 tolyl group Chemical group 0.000 claims description 2
- 230000002452 interceptive effect Effects 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 12
- 239000011230 binding agent Substances 0.000 description 8
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- 238000001879 gelation Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 235000012222 talc Nutrition 0.000 description 3
- 239000000454 talc Substances 0.000 description 3
- 229910052623 talc Inorganic materials 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000484 niobium oxide Inorganic materials 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized 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
-
- 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
- C04B35/632—Organic 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
- C04B35/64—Burning or sintering processes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D5/00—Supports, screens, or the like for the charge within the furnace
- F27D5/0006—Composite supporting structures
-
- 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
- C04B2235/3241—Chromium oxides, chromates, 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
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
-
- 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
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- 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
- C04B2235/40—Metallic constituents or additives not added as binding phase
- C04B2235/404—Refractory metals
-
- 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
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/15—Composition, conformation or state of the charge characterised by the form of the articles
- F27M2001/1504—Ceramic articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/04—Sintering
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses an application of cast-molded green ceramic in preparing electronic ceramics, which comprises the following raw materials: 30-60 parts of alumina powder, 20-40 parts of white corundum powder, 2-20 parts of acrylic adhesive, 10-40 parts of solvent, and the granularity D of the alumina powder and the white corundum powder 50 The addition amount of the acrylic adhesive is 15% -30% of the total addition amount of the alumina powder and the white corundum powder, wherein the addition amount of the acrylic adhesive is 30-80 mu m respectively; when in use, the firing-supporting raw porcelainThe sintering temperature of (2) is less than or equal to 1650 ℃; the sintering-bearing raw porcelain can be used as a supporting plate and a covering plate in the sintering process of the raw porcelain of a product, and the raw porcelain of the product is clamped in the middle to separate and prevent impurities in a sintering furnace from adhering to the surface of the sintered product, and meanwhile, the warping degree of the sintered product can be reduced.
Description
The invention relates to a firing-bearing raw porcelain, which is a divisional application of Chinese invention patent application with the application date of 2022, 07, 29, the application number of 2022109031796 and the name of 'a preparation method and application'.
Technical Field
The invention relates to the field of electronic ceramics, in particular to application of tape casting formed firing-supporting raw porcelain in preparation of electronic ceramics.
Background
Electronic ceramics can be usually formed by sintering raw ceramic tiles (generally obtained by casting alumina slurry) after operations such as punching, printing with metalized slurry and the like, wherein the sintering operation is generally performed in a high-temperature furnace, however, the conditions of volatilization, carbonization, decomposition and the like of a binder and a solvent can occur in the sintering process, so that the environment in the furnace is dirty, particularly dirt in a glue discharging area below 500 ℃ is more, the dirt can often adhere to products, poor products are caused, and meanwhile, the products warp during sintering in the furnace due to the difference of shrinkage rates of the alumina slurry adopted by the raw ceramic and the metalized slurry adopted by printing, and certain negative effects are caused on the quality of the products.
Disclosure of Invention
The invention aims to overcome one or more defects in the prior art, and provides application of a novel cast-molded green ceramic in preparing electronic ceramics, wherein the green ceramic can be used as a supporting plate and a cover plate in the sintering process of the green ceramic, and the green ceramic can be clamped between the supporting plate and the cover plate to separate and prevent impurities in a sintering furnace from adhering to the surface of a sintered product, and meanwhile, the warping degree of the sintered product can be reduced.
In order to achieve the above purpose, the invention adopts a technical scheme that: the application of the tape casting formed green ceramic in preparing the electronic ceramic is characterized in that the raw materials of the green ceramic comprise the following components in parts by weight: 30-60 parts of alumina powder, 20-40 parts of white corundum powder, 2-20 parts of acrylic adhesive and 10-40 parts of solvent;
wherein the particle size D of the alumina powder 50 The granularity D of the white corundum powder is 30-80 mu m 50 30-80 μm;
in the raw materials of the firing ceramic, the addition amount of the acrylic adhesive accounts for 15-30% of the total addition amount of the alumina powder and the white corundum powder;
the sintering temperature of the green ceramic is less than or equal to 1650 ℃ when the green ceramic is used.
The invention provides another technical scheme that: the raw material of the ceramic comprises the following components in parts by weight:
wherein the particle size D of the alumina powder 50 The granularity D of the white corundum powder is 30-80 mu m 50 30-80 μm;
in the raw materials of the firing ceramic, the addition amount of the acrylic adhesive accounts for 15-30% of the total addition amount of the alumina powder and the white corundum powder.
According to some preferred aspects of the invention, the raw materials of the green ceramic comprise, in parts by weight:
according to some preferred aspects of the invention, the mass ratio of the alumina powder to the white corundum powder is 1:0.1-0.8.
According to some preferred aspects of the invention, the white corundum powder has a particle size D 50 Particle size D smaller than the alumina powder 50 。
According to some preferred aspects of the invention, the acrylic binder has a weight average molecular weight of 40 to 60 tens of thousands and a glass transition temperature of-10 to 30 ℃.
Further preferably, the weight average molecular weight of the acrylic adhesive is 45 to 55 tens of thousands, and the glass transition temperature is 0 to 20 ℃.
According to a specific aspect of the invention, the acrylic adhesive is KFA-440 of the interaction chemistry.
In some embodiments of the invention, the solvent is toluene.
The invention provides another technical scheme that: the preparation method of the firing-supporting raw porcelain comprises the following steps:
weighing the raw materials according to the formula, adding the alumina powder, the white corundum powder and the solvent into a ball mill, and performing ball milling for one time;
then adding an acrylic adhesive, and performing secondary ball milling;
and (5) casting after defoaming.
According to some preferred and specific aspects of the present invention, the ball milling time of the primary ball milling and the secondary ball milling is controlled to be 2-4 hours respectively.
According to some preferred and specific aspects of the present invention, in the casting machine used for casting, the temperatures of the 4 temperature zones are respectively: 55-75deg.C, 65-85deg.C, 75-95deg.C, 85-105deg.C.
The invention provides another technical scheme that: an application of the firing-supporting raw porcelain in preparing electronic ceramics, wherein the application comprises the following steps:
placing the raw porcelain of the product to be burned on the first raw porcelain to be burned, covering the upper surface of the raw porcelain of the product to be burned with the second raw porcelain to be burned to form a sequentially overlapped combination to be burned, and then placing the combination to be burned into a sintering furnace for sintering;
after sintering, the first sintering-bearing raw porcelain becomes a first sintering-bearing product, the raw porcelain of the product to be sintered becomes a ceramic product, the second sintering-bearing raw porcelain becomes a second sintering-bearing product, the first sintering-bearing product, the ceramic product and the second sintering-bearing product are sequentially overlapped, the first sintering-bearing product and the second sintering-bearing product are respectively peeled off, the ceramic product is obtained, and the ceramic product is processed into electronic ceramic;
the first and second green-ceramic are the green-ceramic.
According to the invention, in said application, the sintering temperature of said sintering is less than 1800 ℃.
Further, the sintering temperature of the sintering is 1650 ℃ or less.
In some embodiments of the present invention, the green porcelain of the product to be fired is made from an alumina slurry, which may employ formulation components commonly used in the art.
Preferably, the alumina slurry adopts the following formula components:
the alumina slurry comprises the following raw materials in percentage by mass: 45-60% of powder alumina, 2-8% of auxiliary agent powder, 0.5-5% of molybdenum powder solution, 8-20% of acrylic adhesive, 0.05-3% of plasticizer and 15-40% of first organic solvent.
Further, in the alumina slurry, 47-58% of powdery alumina, 2-7% of auxiliary agent powder, 0.8-3.5% of molybdenum powder solution, 10-18% of acrylic adhesive, 0.1-1.5% of plasticizer and 15-38% of first organic solvent.
The auxiliary powder in the present invention does not contain metallic molybdenum powder.
According to some preferred aspects of the invention, the auxiliary powder comprises silica, talc and chromia.
According to some preferred aspects of the invention, the silica, the talc and the chromia are dosed in a mass ratio of 4-5.5:1.5-3.5:1.
In some embodiments of the invention, the auxiliary powder is comprised of silica, talc and chromium oxide.
According to some preferred aspects of the present invention, the molybdenum powder solution is obtained by dispersing metallic molybdenum powder in a second organic solvent, wherein the mass fraction of the second organic solvent is 20-40%, and the second organic solvent may be isopropanol.
According to some preferred aspects of the invention, the plasticizer may be dibutyl phthalate.
According to some preferred aspects of the invention, the first organic solvent is an organic solvent that is poorly compatible or insoluble with water. According to a specific and preferred aspect of the present invention, the first organic solvent may be toluene.
The preparation method of the alumina slurry comprises the following steps:
(1) Respectively adding powder alumina, auxiliary agent powder, molybdenum powder solution and a first organic solvent into a ball mill, and performing first ball milling;
(2) Then adding part of acrylic adhesive into the ball mill, performing a second ball milling, and monitoring the particle size of particles in the slurry in the ball milling process;
(3) Stopping the second ball milling when the particle size reaches a preset value, adding the rest acrylic adhesive and plasticizer, and performing third ball milling to obtain alumina slurry;
wherein the part of the acrylic binder in the step (2) accounts for 0.5% -5% of the total addition amount of the acrylic binder in terms of mass percentage, the part of the acrylic binder in the step (2) accounts for 0.05% -2% of the addition amount of the powder alumina, and the time for the second ball milling accounts for more than 75% of the total ball milling time of the first ball milling, the second ball milling and the third ball milling. In the practical process, only a small amount of proper acrylic adhesive is added to participate in the main ball milling process of the preparation of the alumina slurry, and most of acrylic adhesive and all of plasticizer are finally added.
In addition, in a large number of experimental practices, the alumina slurry is easy to gel in the initial mixing stage or the ball milling process, so that the ball milling is difficult, once the alumina slurry is formed, the alumina slurry is difficult to be used as the slurry of a casting system again, the raw porcelain cannot be prepared, and the production cost is greatly increased. Through the combination of experiments and production practices of the inventor, the analysis shows that the gelation phenomenon may occur due to the existence of water in the system, but in the practice process, even if powder raw materials such as powder alumina are subjected to certain drying treatment, the gelation phenomenon still occurs in different batches to different degrees. Later, the inventors have unexpectedly found that when other types of binders such as PVB (polyvinyl butyral) are used in organic solvent-based casting systems, gelation is substantially avoided by subjecting the powdered raw material, such as powdered alumina, to a certain drying process. The analysis after comparison shows that the invention adopts the acrylic adhesive, and the functional carboxyl contained in the acrylic adhesive can form a plurality of hydrogen bonds with water, so that the gelation phenomenon of the system can occur and is obvious under the condition of extremely low water content, but if the water is required to be completely removed, the water removal operation is long in time and high in energy consumption, which is unfavorable for reducing the cost and improving the production efficiency. According to some preferred aspects of the present invention, in step (1), the water content of the alumina powder and the auxiliary agent powder is controlled to be lower than 0.75% before the alumina powder and the auxiliary agent powder are added into the ball mill, so that the gelation phenomenon can be basically controlled, and the water removal time and the energy consumption are within reasonable ranges.
According to some preferred aspects of the present invention, the part of the acrylic adhesive in the step (2) accounts for 1% to 4% of the total addition amount of the acrylic adhesive in terms of mass%. In some embodiments of the present invention, the portion of the acrylic adhesive in step (2) is 1% -2% of the total added amount of the acrylic adhesive in terms of mass%. In some embodiments of the present invention, the portion of the acrylic adhesive in step (2) is 2% -3% of the total added amount of the acrylic adhesive in terms of mass%. In some embodiments of the present invention, the portion of the acrylic adhesive in step (2) is 3% -4% of the total added amount of the acrylic adhesive in terms of mass%.
According to some preferred aspects of the present invention, the part of the acrylic binder in step (2) accounts for 0.1% to 1.5% of the added amount of the powder alumina in terms of mass%. In some embodiments of the present invention, the portion of the acrylic binder in step (2) comprises 0.1% to 0.5% of the added amount of the powdered alumina in mass percent. In some embodiments of the invention, the portion of the acrylic binder in step (2) comprises 0.5% to 1% of the added amount of the powdered alumina in mass percent. In some embodiments of the invention, the portion of the acrylic binder in step (2) comprises 1% to 1.5% of the added amount of the powdered alumina in mass percent.
According to the invention, the preset value is: d (D) 50 1.9-2.5 μm.
According to some preferred aspects of the invention, the time taken for the first ball milling is 1% -5% of the total ball milling time of the first ball milling, the second ball milling and the third ball milling.
In some embodiments of the invention, the time taken for the first ball milling is 2% -4% of the total ball milling time of the first ball milling, the second ball milling and the third ball milling.
Further, the time taken for the second ball milling is 80% or more of the total ball milling time of the first ball milling, the second ball milling and the third ball milling.
In some embodiments of the present invention, the method for preparing the green porcelain for the product to be fired includes: uniformly mixing the alumina slurry, performing vacuum deaeration, removing bubbles in the slurry, then entering a casting machine to cast green ceramic, cutting according to a certain size to obtain a sheet-shaped green ceramic sheet, and printing electronic slurry for printing on the green ceramic sheet to prepare a green ceramic product to be burned;
the temperature of the 4 temperature areas of the casting machine are respectively as follows: 75.+ -. 10 ℃, 95.+ -. 10 ℃, 120.+ -. 10 ℃, 130.+ -. 10 ℃.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the invention innovatively provides a novel raw ceramic bearing based on the phenomena of poor surface performance, easy warping and the like in the sintering process of the raw ceramic chip of the existing product, and the raw ceramic bearing can be used as a supporting plate and a cover plate in the sintering process of the raw ceramic product to clamp the raw ceramic product in the middle so as to separate and prevent impurities in a sintering furnace from adhering to the surface of the sintered product, and meanwhile, the warping degree of the sintered product can be reduced, and in addition, the raw ceramic bearing is easy to remove after the sintering is finished, and the surface quality of the sintered product is not affected.
In particular, in the invention, the sintering temperature of the alumina is reduced by combining the alumina powder, the white corundum powder and the acrylic adhesive, because the white corundum powder is prepared by smelting industrial alumina powder at a high temperature above 2000 ℃ and cooling the industrial alumina powder, the sintering temperature of the alumina is about 1800 ℃ under the condition that no sintering aid is added, and the sintering temperature of the alumina is reduced by basically adding the sintering aid such as silicon dioxide and the like into the conventional alumina slurry, therefore, in general, the highest sintering temperature of a sintering furnace is generally 1650 ℃, in such a state, once the sintering ceramic of the invention and the ceramic of the product to be sintered are co-sintered according to the superposition mode of the invention, the intermediate ceramic of the product to be sintered can be normally sintered into ceramic, and the overall structure of the sintered ceramic is loose due to the existence of the white corundum powder, and remains as a whole under the existence of the alumina powder.
In the present invention, in the high temperature sintering furnace, the product is an organic material such as a binder at 500 ℃ or lower, a decarburized organic material at 500 to 1100 ℃ or higher, and alumina starts to sinter. Gaps appear among the degummed alumina particles, organic matters such as carbon in the product pass through the gaps among the alumina particles of the green ceramic, the gaps among the white corundum particles are slowly removed, the product starts to be sintered rapidly at about 1600 ℃, the alumina particles are slowly fused, the gaps are filled, and the sintering is successful. The sintering-supporting ceramic has relatively high sintering temperature because no sintering aid is added, so that larger gaps are kept all the time in the sintering process of the product, and organic matters are removed from the product conveniently.
Drawings
FIG. 1 is a schematic diagram showing the superposition of a to-be-fired assembly according to an embodiment of the present invention;
wherein, 1, a first raw porcelain is burned; 2. raw porcelain of the product to be burned; 3. and a second green ceramic.
Detailed Description
The above-described aspects are further described below in conjunction with specific embodiments; it should be understood that these embodiments are provided to illustrate the basic principles, main features and advantages of the present invention, and that the present invention is not limited by the scope of the following embodiments; the implementation conditions employed in the examples may be further adjusted according to specific requirements, and the implementation conditions not specified are generally those in routine experiments.
All starting materials are commercially available or prepared by methods conventional in the art, not specifically described in the examples below.
Alumina powder was obtained from Meta aluminum, trade name AMB, D measured during use 50 65+ -5 μm;
the white corundum powder may be self-made or commercially available, and in the following examples, commercially available white corundum powder F180 (GB 2477-83) was used to determine D when in use 50 80+/-5 mu m;
D 50 measured by a malvern 3000 laser particle sizer;
the acrylic adhesive is KFA-440 of the interaction chemistry;
the metallic molybdenum powder, silicon dioxide, talcum powder and chromium oxide are all commercially available, and the Fisher particle size is between 1 and 2.3 microns;
dibutyl phthalate is commercially available and has purity of 99%;
the ball mill is a commercially available 300L ball mill with a ceramic lining or a nylon lining, the working parameters are that the rotating speed is 40+/-5 rpm, the grinding balls are alumina balls, the particle size is about 30mm, and the ball-ball ratio is controlled to be 1:1.
Example 1
The embodiment provides a raw ceramic for bearing firing and a preparation method thereof, and the raw materials of the raw ceramic for bearing firing comprise, by weight:
the preparation method of the firing-supporting raw porcelain comprises the following steps:
weighing the raw materials according to the formula, adding the alumina powder, the white corundum powder and the toluene into a ball mill, and performing ball milling for 3 hours;
then adding acrylic adhesive, performing secondary ball milling for 3 hours;
and (3) casting after defoaming, wherein in a casting machine used for casting, the temperatures of 4 temperature areas are respectively as follows: casting the green ceramic with the thickness of 0.6mm at 65 ℃ +/-5 ℃, 75 ℃ +/-5 ℃, 85 ℃ +/-5 ℃ and 95 ℃ +/-5 ℃ and cutting into firing-bearing green ceramic chips with the thickness of 230mm (Y) and 130mm (X).
Example 2
The embodiment provides a raw ceramic for bearing firing and a preparation method thereof, and the raw materials of the raw ceramic for bearing firing comprise, by weight:
55 parts of alumina powder
White corundum powder 20 parts
Acrylic adhesive 15 parts
10 parts of toluene;
the preparation method of the firing-supporting raw porcelain comprises the following steps:
weighing the raw materials according to the formula, adding the alumina powder, the white corundum powder and the toluene into a ball mill, and performing ball milling for 3 hours;
then adding acrylic adhesive, performing secondary ball milling for 3 hours;
and (3) casting after defoaming, wherein in a casting machine used for casting, the temperatures of 4 temperature areas are respectively as follows: casting the green ceramic with the thickness of 0.6mm at 65 ℃ +/-5 ℃, 75 ℃ +/-5 ℃, 85 ℃ +/-5 ℃ and 95 ℃ +/-5 ℃ and cutting into firing-bearing green ceramic chips with the thickness of 230mm (Y) and 130mm (X).
Example 3
The embodiment provides a raw ceramic for bearing firing and a preparation method thereof, and the raw materials of the raw ceramic for bearing firing comprise, by weight:
the preparation method of the firing-supporting raw porcelain comprises the following steps:
weighing the raw materials according to the formula, adding the alumina powder, the white corundum powder and the toluene into a ball mill, and performing ball milling for 3 hours;
then adding acrylic adhesive, performing secondary ball milling for 3 hours;
and (3) casting after defoaming, wherein in a casting machine used for casting, the temperatures of 4 temperature areas are respectively as follows: casting the green ceramic with the thickness of 0.6mm at 65 ℃ +/-5 ℃, 75 ℃ +/-5 ℃, 85 ℃ +/-5 ℃ and 95 ℃ +/-5 ℃ and cutting into firing-bearing green ceramic chips with the thickness of 230mm (Y) and 130mm (X).
Comparative example 1
Substantially the same as in example 1, the only difference is that: the white corundum powder adopts 400# commercial powder and D 50 ：25±5μm。
Comparative example 2
Substantially the same as in example 1, the only difference is that: the raw materials of the firing ceramic comprise, by mass, 10% of the additive amount of the acrylic adhesive, namely the alumina powder and the white corundum.
Comparative example 3
Substantially the same as in example 1, the only difference is that: the raw materials of the firing ceramic comprise, by mass, 40% of the additive amount of the acrylic adhesive, namely the alumina powder and the white corundum.
Comparative example 4
Substantially the same as in example 1, the only difference is that: the raw materials of the firing ceramic comprise, by mass, 50% of the additive amount of the acrylic adhesive, namely the alumina powder and the white corundum.
Application example 1
The firing ceramic obtained in example 1 was used to prepare electronic ceramics, and the specific steps include:
placing the raw porcelain of the product to be burned on the first raw porcelain 1 to be burned, covering the upper surface of the raw porcelain 2 of the product to be burned with the second raw porcelain 3 to form a sequentially overlapped combination to be burned (shown in figure 1), and then placing the combination to be burned into a sintering furnace for sintering (the debonding temperature is 500 ℃,3.5 hours; 500-1100 ℃,3.5 hours; 1100-1600 ℃,5.5 hours; and the heating speed is 1 minute and 5 ℃); after sintering, the first sintering-bearing raw porcelain 1 becomes a first sintering-bearing product, the raw porcelain 2 of the product to be sintered becomes a ceramic product, the second sintering-bearing raw porcelain 3 becomes a second sintering-bearing product, the first sintering-bearing product, the ceramic product and the second sintering-bearing product are sequentially overlapped, the first sintering-bearing product and the second sintering-bearing product are respectively peeled off, the ceramic product is obtained, and the ceramic product is processed into electronic ceramic;
the first and second green-ceramic bodies 1 and 3 are the green-ceramic bodies obtained in example 1;
wherein, the raw porcelain 2 of the product to be burned is obtained by the following method:
(1) Preparation of alumina slurry
The alumina slurry comprises the following components: 47% of powdery aluminum oxide, 4% of auxiliary agent powder, 3% of molybdenum powder solution, 12% of acrylic adhesive, 0.3% of plasticizer and 33.7% of toluene; wherein the auxiliary agent powder consists of silicon dioxide, talcum powder and chromium oxide, and the mass ratio of the silicon dioxide to the talcum powder to the chromium oxide is 5:3:1; the molybdenum powder solution is obtained by dispersing metal molybdenum powder in isopropanol, and the mass fraction of the molybdenum powder solution is 30%; powdered alumina was purchased from Meta aluminum, trade name AMB, D measured during use 50 60-70 μm;
drying the powder alumina and the auxiliary agent powder which are weighed according to the proportion in a drying room with the temperature of 80+/-10 ℃ until the water content is reduced to 0.75 percent for standby;
the preparation method of the alumina slurry comprises the following steps:
the first step: putting the dried powder alumina into a ball mill;
and a second step of: putting the dried auxiliary agent powder into a ball mill;
and a third step of: putting isopropanol into a stainless steel barrel, then putting metal molybdenum powder into the stainless steel barrel containing isopropanol, uniformly stirring to obtain molybdenum powder solution, and finally putting the molybdenum powder solution into a ball mill;
fourth step: toluene is put into a ball mill;
fifth step: covering the ball mill cover to perform the first ball milling, stopping after 2 hours of operation, opening the cover, putting part of acrylic adhesive into the ball mill, covering the cover, starting to operate the ball mill to perform the second ball milling, and performing the particle size D of particles in slurry in the ball milling process 50 Monitoring; wherein, part of the acrylic adhesive accounts for 1.5% of the total addition amount of the acrylic adhesive;
sixth step: when the granularity reaches the granularity preset value D 50 The second ball milling time is about 50 hours when the ball milling time is 1.9-2.5 mu m;
meanwhile, when the granularity reaches the requirement, opening the cover of the ball mill, and putting the rest acrylic adhesive into the ball mill; and putting dibutyl phthalate into a ball mill, and then operating for 5 hours to obtain the alumina slurry. The preparation process has no gelation.
(2) Preparation of raw porcelain for to-be-fired product
Uniformly mixing the alumina slurry prepared in the step (1), then carrying out vacuum defoaming, removing bubbles in the slurry, and then, feeding the slurry into a casting machine to cast green ceramic, and cutting the slurry according to a certain size to obtain a sheet-shaped green ceramic to be burned product;
the temperature of the 4 temperature areas of the casting machine are respectively as follows: 75+ -10deg.C, 95+ -10deg.C, 120+ -10deg.C, 130+ -10deg.C;
the green ceramic tile with the thickness of 0.6mm is cast, and cut into green ceramic tiles with the thickness of 60mm (20 mm (Y X)).
X direction: refers to the casting direction; y direction: the direction perpendicular to the casting;
the green porcelain piece is manufactured into the green porcelain of the product to be burned by the following method:
printing 18-22 mu m self-made printing electronic paste on the green ceramic chip, and sintering the ceramic chip without printing paste in a furnace.
Self-made printing electronic paste: is formed by mixing tungsten powder (as conductive phase), alumina (as binder phase) and binder;
tungsten powder: 50 parts of FSSS with a particle size of 1-5. Mu.m
Alumina: 1 part FSSS particle size 0.1-2 microns
Niobium oxide: 1 part of
Acetone: 38 parts of
And (2) a binder: 10 parts (fused by nitrocellulose and dibutyl phthalate 1:2);
adding acetone into tungsten powder and alumina powder sintering aid, putting into 300L ceramic internal village or nylon internal village, grinding for 24 hours, and rotating at the speed of: 50.+ -.10 rpm.
6 parts of binder are added and grinding is continued for 2 hours.
Adding the mixture into a stirring tank after discharging, adding 4 parts of binder after removing acetone in vacuum, and continuously stirring for 0.5 hour;
and (5) discharging after the viscosity is qualified.
Application example 2
Substantially the same as in application example 1, the only difference is that: the green ceramic was replaced with the one prepared in example 2.
Application example 3
Substantially the same as in application example 1, the only difference is that: the green ceramic was replaced with the one prepared in example 3.
Comparative example 1 was used
Substantially the same as in application example 1, the only difference is that: the green ceramic was replaced with comparative example 1.
Comparative example 2 was used
Substantially the same as in application example 1, the only difference is that: the green ceramic was replaced with comparative example 2.
Comparative example 3 was used
Substantially the same as in application example 1, the only difference is that: the green ceramic was replaced with comparative example 3.
Comparative example 4 was used
Substantially the same as in application example 1, the only difference is that: the green ceramic was replaced with comparative example 4.
Performance testing
1. The states of the first firing product (obtained after firing the first firing raw ceramic), the second firing product (obtained after firing the second firing raw ceramic) and the ceramic product (obtained after firing the ceramic to be fired product) and each other are observed in the ceramic forming process and after the ceramic forming, and the specific results are shown in table 1.
TABLE 1
2. After porcelain forming, the warping degree of the ceramic product is measured, and the specific test method comprises the following steps:
the thickness of the ceramic sheet (including warpage) was measured using a vernier caliper, the middle of the ceramic sheet was entirely clamped by the vernier caliper, the thickness was measured, and the thickness of the ceramic sheet with the printed electronic paste subtracted from the thickness of the ceramic sheet without the printed electronic paste was the warpage of the ceramic sheet.
See table 2 for specific results.
TABLE 2
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and are understood to encompass values approaching those ranges or values. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein.
Claims (10)
1. The application of the tape casting formed green ceramic in preparing the electronic ceramic is characterized in that the raw materials of the green ceramic comprise the following components in parts by weight: 30-60 parts of alumina powder, 20-40 parts of white corundum powder, 2-20 parts of acrylic adhesive and 10-40 parts of solvent;
wherein the particle size D of the alumina powder 50 The granularity D of the white corundum powder is 30-80 mu m 50 30-80 μm;
in the raw materials of the firing ceramic, the addition amount of the acrylic adhesive accounts for 15-30% of the total addition amount of the alumina powder and the white corundum powder;
the sintering temperature of the green ceramic is less than or equal to 1650 ℃ when the green ceramic is used.
2. The use according to claim 1, characterized in that the raw materials of the green ceramic comprise, in parts by weight: 50-60 parts of alumina powder, 20-40 parts of white corundum powder, 15-20 parts of acrylic adhesive and 10-40 parts of solvent;
or, the raw materials of the firing ceramic comprise the following components in parts by weight: 40-55 parts of alumina powder, 20-30 parts of white corundum powder, 15-20 parts of acrylic adhesive and 10-20 parts of solvent.
3. The use according to claim 1, characterized in that the mass ratio of alumina powder to white corundum powder is 1:0.1-0.8, the particle size D of the white corundum powder 50 Particle size D smaller than the alumina powder 50 ；
The solvent is toluene.
4. The use according to claim 1, wherein the method for preparing the green ceramic comprises:
weighing the raw materials according to the formula, adding the alumina powder, the white corundum powder and the solvent into a ball mill, and performing ball milling for one time;
then adding an acrylic adhesive, and performing secondary ball milling;
casting after deaeration;
controlling the ball milling time of the primary ball milling and the secondary ball milling to be 2-4 hours respectively; in the casting machine for casting, the temperatures of the 4 temperature areas are respectively as follows: 55-75deg.C, 65-85deg.C, 75-95deg.C, 85-105deg.C.
5. The application according to claim 1, characterized in that it comprises:
placing the raw porcelain of the product to be burned on the first raw porcelain to be burned, covering the upper surface of the raw porcelain of the product to be burned with the second raw porcelain to be burned to form a sequentially overlapped combination to be burned, and then placing the combination to be burned into a sintering furnace for sintering;
after sintering, the first sintering-bearing raw ceramic becomes a first sintering-bearing product, the ceramic of the product to be sintered becomes a ceramic product, the second sintering-bearing raw ceramic becomes a second sintering-bearing product, the first sintering-bearing product, the ceramic product and the second sintering-bearing product are sequentially overlapped, the first sintering-bearing product and the second sintering-bearing product are respectively peeled off, the ceramic product is obtained, and the ceramic product is processed into electronic ceramic.
6. The use according to claim 5, wherein the green porcelain of the product to be burned is made of an alumina slurry, the raw materials of which, in mass percent, comprise: 45-60% of powder alumina, 2-8% of auxiliary agent powder, 0.5-5% of molybdenum powder solution, 8-20% of acrylic adhesive, 0.05-3% of plasticizer and 15-40% of first organic solvent;
further, in the alumina slurry, 47-58% of powdery alumina, 2-7% of auxiliary agent powder, 0.8-3.5% of molybdenum powder solution, 10-18% of acrylic adhesive, 0.1-1.5% of plasticizer and 15-38% of first organic solvent;
the auxiliary agent powder comprises silicon dioxide, talcum powder and chromium oxide, wherein the mass ratio of the silicon dioxide to the talcum powder to the chromium oxide is 4-5.5:1.5-3.5:1;
the first organic solvent is an organic solvent which is difficult to dissolve with water or insoluble in water;
the molybdenum powder solution is obtained by dispersing metal molybdenum powder in a second organic solvent, the mass fraction of the molybdenum powder solution is 20-40%, and the second organic solvent is isopropanol.
7. The use according to any one of claims 1-4, 6, wherein the acrylic adhesive has a weight average molecular weight of 40-60 ten thousand, a glass transition temperature of-10-30 ℃, further wherein the acrylic adhesive has a weight average molecular weight of 45-55 ten thousand, a glass transition temperature of 0-20 ℃; still further, the acrylic adhesive is KFA-440 of the interactive chemistry.
8. The use according to claim 6, wherein the method for preparing the alumina slurry comprises the steps of:
(1) Respectively adding powder alumina, auxiliary agent powder, molybdenum powder solution and a first organic solvent into a ball mill, and performing first ball milling;
(2) Then adding part of acrylic adhesive into the ball mill, performing a second ball milling, and monitoring the particle size of particles in the slurry in the ball milling process;
(3) Stopping the second ball milling when the particle size reaches a preset value, adding the rest acrylic adhesive and plasticizer, and performing third ball milling to obtain alumina slurry;
wherein the part of the acrylic binder in the step (2) accounts for 0.5% -5% of the total addition amount of the acrylic binder in terms of mass percentage, the part of the acrylic binder in the step (2) accounts for 0.05% -2% of the addition amount of the powder alumina, and the time for the second ball milling accounts for more than 75% of the total ball milling time of the first ball milling, the second ball milling and the third ball milling.
9. The use according to claim 8, wherein in step (1) the water content of the alumina powder and the auxiliary powder is controlled to be less than 0.75% respectively before being added to the ball mill; and/or, the part of the acrylic adhesive in the step (2) accounts for 1% -4% of the total addition amount of the acrylic adhesive in terms of mass percent; and/or, the part of the acrylic binder in the step (2) accounts for 0.1% -1.5% of the added amount of the powder alumina in terms of mass percent; and/or the time taken by the first ball milling is 1% -5% of the total ball milling time of the first ball milling, the second ball milling and the third ball milling; and/or the time of the second ball milling is more than 80% of the total ball milling time of the first ball milling, the second ball milling and the third ball milling.
10. The use according to claim 6, wherein the method for preparing raw porcelain for the product to be fired comprises: uniformly mixing the alumina slurry, performing vacuum deaeration, removing bubbles in the slurry, then entering a casting machine to cast green ceramic, cutting according to a certain size to obtain a sheet-shaped green ceramic sheet, and printing electronic slurry for printing on the green ceramic sheet to prepare a green ceramic product to be burned;
the temperature of the 4 temperature areas of the casting machine are respectively as follows: 75.+ -. 10 ℃, 95.+ -. 10 ℃, 120.+ -. 10 ℃, 130.+ -. 10 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310738706.7A CN116768609A (en) | 2022-07-29 | 2022-07-29 | Application of tape casting formed firing-supporting raw porcelain in preparation of electronic ceramics |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210903179.6A CN115259869B (en) | 2022-07-29 | 2022-07-29 | Firing-supporting raw porcelain and preparation method and application thereof |
| CN202310738706.7A CN116768609A (en) | 2022-07-29 | 2022-07-29 | Application of tape casting formed firing-supporting raw porcelain in preparation of electronic ceramics |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210903179.6A Division CN115259869B (en) | 2022-07-29 | 2022-07-29 | Firing-supporting raw porcelain and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116768609A true CN116768609A (en) | 2023-09-19 |
Family
ID=83770076
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310738706.7A Pending CN116768609A (en) | 2022-07-29 | 2022-07-29 | Application of tape casting formed firing-supporting raw porcelain in preparation of electronic ceramics |
| CN202210903179.6A Active CN115259869B (en) | 2022-07-29 | 2022-07-29 | Firing-supporting raw porcelain and preparation method and application thereof |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210903179.6A Active CN115259869B (en) | 2022-07-29 | 2022-07-29 | Firing-supporting raw porcelain and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN116768609A (en) |
Citations (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0297467A (en) * | 1988-10-05 | 1990-04-10 | Hokuriku Electric Ind Co Ltd | Production of thin ceramic sheet and green ceramic sheet utilizer for method thereof |
| US5356512A (en) * | 1991-12-09 | 1994-10-18 | Murata Mfg. Co., Ltd. | Method of stacking ceramic green sheets |
| JPH08133823A (en) * | 1994-11-04 | 1996-05-28 | Minnesota Mining & Mfg Co <3M> | Alumina composition |
| JP2000313653A (en) * | 1999-04-28 | 2000-11-14 | Kyocera Corp | Ceramic substrate |
| US6447712B1 (en) * | 1998-12-28 | 2002-09-10 | University Of Washington | Method for sintering ceramic tapes |
| JP2003040683A (en) * | 2001-07-27 | 2003-02-13 | Sumitomo Metal Electronics Devices Inc | Method of manufacturing low-temperature fired ceramic board |
| JP2004292242A (en) * | 2003-03-27 | 2004-10-21 | Kyocera Corp | Manufacturing method of ceramic composite |
| CN1887592A (en) * | 2004-11-22 | 2007-01-03 | E.I.内穆尔杜邦公司 | Process for the constrained sintering of a pseudo-symmetrically configured low temperature cofired ceramic structure |
| CN101244944A (en) * | 2008-03-19 | 2008-08-20 | 田维 | Zirconium oxide composite kiln furniture for electronic industry and method for manufacturing same |
| CN101791818A (en) * | 2010-03-04 | 2010-08-04 | 中国电子科技集团公司第五十五研究所 | Method for preparing aluminium oxide ceramics green ceramic chip by tape casting |
| CN102424568A (en) * | 2011-09-02 | 2012-04-25 | 厦门大学 | Method for preparing tungsten-containing alumina ceramic heating substrate |
| CN103086737A (en) * | 2013-02-25 | 2013-05-08 | 中国科学院上海硅酸盐研究所 | Large-area ceramic porous burning plate and preparation method thereof |
| CN103121848A (en) * | 2013-02-25 | 2013-05-29 | 潮州三环（集团）股份有限公司 | Aluminum nitride ceramic substrate sintering technology |
| CN103408291A (en) * | 2013-07-22 | 2013-11-27 | 南京中江新材料科技有限公司 | Aluminum oxide ceramic substrate with high heat conductivity and preparation method thereof |
| US20150119230A1 (en) * | 2012-06-22 | 2015-04-30 | Imerys Ceramics France | Ceramic compositions comprising alumina |
| CN104987050A (en) * | 2015-06-18 | 2015-10-21 | 浙江长兴电子厂有限公司 | Preparation method for non-water-based high-purity nanoscale aluminum oxide ceramics |
| CN105347777A (en) * | 2015-11-30 | 2016-02-24 | 中国电子科技集团公司第五十五研究所 | Method for preparing low-loss high-temperature co-firing aluminum oxide black porcelain applied to high-frequency circuit |
| CN106810214A (en) * | 2017-01-05 | 2017-06-09 | 中北大学 | A kind of preparation method of high strength and low cost alumina ceramic substrate used for electronic packaging |
| CN106957173A (en) * | 2017-03-30 | 2017-07-18 | 广东工业大学 | A kind of tin barium titanate thick film ceramic and its application |
| CN107721395A (en) * | 2017-10-09 | 2018-02-23 | 宁夏钜晶电子材料科技有限公司 | Transparent alumina ceramics preparation method |
| CN108129139A (en) * | 2017-12-18 | 2018-06-08 | 常州市好利莱光电科技有限公司 | A kind of preparation method of high-strength alumina ceramic substrate |
| CN108658621A (en) * | 2018-05-18 | 2018-10-16 | 宜兴市东山新型材料有限公司 | A kind of high purity aluminium oxide lightweight load bearing board and preparation method thereof |
| CN108929112A (en) * | 2018-09-21 | 2018-12-04 | 广东工业大学 | A kind of lead lanthanum zirconate titanate thick film ceramic that mixing tin and its preparation and application |
| CN109053196A (en) * | 2018-07-12 | 2018-12-21 | 中国电子科技集团公司第五十五研究所 | A kind of sintering method of large scale high-temperature co-fired ceramics |
| CN109665820A (en) * | 2018-12-28 | 2019-04-23 | 江苏省宜兴电子器件总厂有限公司 | A kind of preparation method of high green density tape casting diaphragm |
| CN110436897A (en) * | 2019-09-04 | 2019-11-12 | 福建华清电子材料科技有限公司 | A kind of preparation method of ultrathin alumina ceramic substrate |
| CN211240269U (en) * | 2019-12-27 | 2020-08-11 | 郑州中瓷科技有限公司 | High-heat-conductivity ceramic composite pressing plate for tempering and leveling ultrathin ceramic substrate |
| CN112028627A (en) * | 2020-08-13 | 2020-12-04 | 珠海粤科京华科技有限公司 | Firing method of solid electrolyte sheet and product |
| CN215063756U (en) * | 2021-06-17 | 2021-12-07 | 东莞市陶陶新材料科技有限公司 | Auxiliary tool for sintering green ceramic chips |
| CN113916002A (en) * | 2021-11-22 | 2022-01-11 | 中国建筑材料科学研究总院有限公司 | Sheet ceramic pressing and sintering device and using method thereof |
| CN114573370A (en) * | 2022-02-17 | 2022-06-03 | 江苏国瓷泓源光电科技有限公司 | Heating slurry without harmful metal, preparation method thereof and printing film forming method |
| CN114685164A (en) * | 2022-04-28 | 2022-07-01 | 武汉市浦翔电子有限公司 | Casting membrane for preparing oxygen sensor chip and preparation process thereof |
| CN114702321A (en) * | 2022-04-18 | 2022-07-05 | 无锡市惠丰电子有限公司 | Sintering process of tape-casting alumina sheet |
| CN217005366U (en) * | 2022-02-08 | 2022-07-19 | 潮州三环（集团）股份有限公司 | Burning bearing plate |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005008368A (en) * | 2003-06-19 | 2005-01-13 | Mikura Bussan Kk | Electronic part handling unit and manufacturing method thereof |
| CN102079657B (en) * | 2009-11-27 | 2014-10-08 | 韦国文 | Method for producing and preparing high-aluminum setter plate kiln furniture with high thermal shock resistance |
| CN102491762B (en) * | 2011-11-18 | 2013-08-14 | 常熟市创新陶瓷有限公司 | High-temperature fireproof kiln material and preparing method thereof |
| CN106220203B (en) * | 2016-08-06 | 2019-03-26 | 山东铭特陶瓷材料有限公司 | The preparation method of wear-resistant ceramic load bearing board |
| CN107382284A (en) * | 2017-06-28 | 2017-11-24 | 中国电子科技集团公司第五十五研究所 | A kind of sintering method of high temperature co-firing aluminium oxide ceramics |
| CN111269019B (en) * | 2020-03-14 | 2022-04-29 | 苏州市伊贝高温技术材料有限公司 | Sintered pollution-free load bearing plate used in ultra-high temperature environment and preparation method thereof |
| CN113105268B (en) * | 2021-04-19 | 2022-06-14 | 亚细亚建筑材料股份有限公司 | Transparent ceramic material and preparation method and application thereof |
-
2022
- 2022-07-29 CN CN202310738706.7A patent/CN116768609A/en active Pending
- 2022-07-29 CN CN202210903179.6A patent/CN115259869B/en active Active
Patent Citations (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0297467A (en) * | 1988-10-05 | 1990-04-10 | Hokuriku Electric Ind Co Ltd | Production of thin ceramic sheet and green ceramic sheet utilizer for method thereof |
| US5356512A (en) * | 1991-12-09 | 1994-10-18 | Murata Mfg. Co., Ltd. | Method of stacking ceramic green sheets |
| JPH08133823A (en) * | 1994-11-04 | 1996-05-28 | Minnesota Mining & Mfg Co <3M> | Alumina composition |
| US6447712B1 (en) * | 1998-12-28 | 2002-09-10 | University Of Washington | Method for sintering ceramic tapes |
| JP2000313653A (en) * | 1999-04-28 | 2000-11-14 | Kyocera Corp | Ceramic substrate |
| JP2003040683A (en) * | 2001-07-27 | 2003-02-13 | Sumitomo Metal Electronics Devices Inc | Method of manufacturing low-temperature fired ceramic board |
| JP2004292242A (en) * | 2003-03-27 | 2004-10-21 | Kyocera Corp | Manufacturing method of ceramic composite |
| CN1887592A (en) * | 2004-11-22 | 2007-01-03 | E.I.内穆尔杜邦公司 | Process for the constrained sintering of a pseudo-symmetrically configured low temperature cofired ceramic structure |
| CN101244944A (en) * | 2008-03-19 | 2008-08-20 | 田维 | Zirconium oxide composite kiln furniture for electronic industry and method for manufacturing same |
| CN101791818A (en) * | 2010-03-04 | 2010-08-04 | 中国电子科技集团公司第五十五研究所 | Method for preparing aluminium oxide ceramics green ceramic chip by tape casting |
| CN102424568A (en) * | 2011-09-02 | 2012-04-25 | 厦门大学 | Method for preparing tungsten-containing alumina ceramic heating substrate |
| US20150119230A1 (en) * | 2012-06-22 | 2015-04-30 | Imerys Ceramics France | Ceramic compositions comprising alumina |
| CN103086737A (en) * | 2013-02-25 | 2013-05-08 | 中国科学院上海硅酸盐研究所 | Large-area ceramic porous burning plate and preparation method thereof |
| CN103121848A (en) * | 2013-02-25 | 2013-05-29 | 潮州三环（集团）股份有限公司 | Aluminum nitride ceramic substrate sintering technology |
| CN103408291A (en) * | 2013-07-22 | 2013-11-27 | 南京中江新材料科技有限公司 | Aluminum oxide ceramic substrate with high heat conductivity and preparation method thereof |
| CN104987050A (en) * | 2015-06-18 | 2015-10-21 | 浙江长兴电子厂有限公司 | Preparation method for non-water-based high-purity nanoscale aluminum oxide ceramics |
| CN105347777A (en) * | 2015-11-30 | 2016-02-24 | 中国电子科技集团公司第五十五研究所 | Method for preparing low-loss high-temperature co-firing aluminum oxide black porcelain applied to high-frequency circuit |
| CN106810214A (en) * | 2017-01-05 | 2017-06-09 | 中北大学 | A kind of preparation method of high strength and low cost alumina ceramic substrate used for electronic packaging |
| CN106957173A (en) * | 2017-03-30 | 2017-07-18 | 广东工业大学 | A kind of tin barium titanate thick film ceramic and its application |
| CN107721395A (en) * | 2017-10-09 | 2018-02-23 | 宁夏钜晶电子材料科技有限公司 | Transparent alumina ceramics preparation method |
| CN108129139A (en) * | 2017-12-18 | 2018-06-08 | 常州市好利莱光电科技有限公司 | A kind of preparation method of high-strength alumina ceramic substrate |
| CN108658621A (en) * | 2018-05-18 | 2018-10-16 | 宜兴市东山新型材料有限公司 | A kind of high purity aluminium oxide lightweight load bearing board and preparation method thereof |
| CN109053196A (en) * | 2018-07-12 | 2018-12-21 | 中国电子科技集团公司第五十五研究所 | A kind of sintering method of large scale high-temperature co-fired ceramics |
| CN108929112A (en) * | 2018-09-21 | 2018-12-04 | 广东工业大学 | A kind of lead lanthanum zirconate titanate thick film ceramic that mixing tin and its preparation and application |
| CN109665820A (en) * | 2018-12-28 | 2019-04-23 | 江苏省宜兴电子器件总厂有限公司 | A kind of preparation method of high green density tape casting diaphragm |
| CN110436897A (en) * | 2019-09-04 | 2019-11-12 | 福建华清电子材料科技有限公司 | A kind of preparation method of ultrathin alumina ceramic substrate |
| CN211240269U (en) * | 2019-12-27 | 2020-08-11 | 郑州中瓷科技有限公司 | High-heat-conductivity ceramic composite pressing plate for tempering and leveling ultrathin ceramic substrate |
| CN112028627A (en) * | 2020-08-13 | 2020-12-04 | 珠海粤科京华科技有限公司 | Firing method of solid electrolyte sheet and product |
| CN215063756U (en) * | 2021-06-17 | 2021-12-07 | 东莞市陶陶新材料科技有限公司 | Auxiliary tool for sintering green ceramic chips |
| CN113916002A (en) * | 2021-11-22 | 2022-01-11 | 中国建筑材料科学研究总院有限公司 | Sheet ceramic pressing and sintering device and using method thereof |
| CN217005366U (en) * | 2022-02-08 | 2022-07-19 | 潮州三环（集团）股份有限公司 | Burning bearing plate |
| CN114573370A (en) * | 2022-02-17 | 2022-06-03 | 江苏国瓷泓源光电科技有限公司 | Heating slurry without harmful metal, preparation method thereof and printing film forming method |
| CN114702321A (en) * | 2022-04-18 | 2022-07-05 | 无锡市惠丰电子有限公司 | Sintering process of tape-casting alumina sheet |
| CN114685164A (en) * | 2022-04-28 | 2022-07-01 | 武汉市浦翔电子有限公司 | Casting membrane for preparing oxygen sensor chip and preparation process thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李建忠;张勇;徐大余: "氧化铝粉体性能对流延法生产陶瓷基板的影响", 硅酸盐通报, no. 02, 15 April 2011 (2011-04-15), pages 346 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115259869B (en) | 2023-07-14 |
| CN115259869A (en) | 2022-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5339214B2 (en) | Method for manufacturing silicon nitride substrate and silicon nitride substrate | |
| CN102795894A (en) | Surface metallization layer of high-purity alumina ceramics and compounding technology thereof | |
| CN103177791A (en) | Aluminum electrically conductive slurry used for solar cell and preparation method thereof | |
| CN104071985B (en) | Devitrified glass precursor powder, microcrystalline glass powder, its preparation method and application | |
| JPH107435A (en) | Glass ceramic wiring substrate and its production | |
| CN114853342B (en) | Hot-bending bright ceramic rock plate and preparation method thereof | |
| EP1171394B1 (en) | Tapes for heat sealing substrates | |
| CN115259869B (en) | Firing-supporting raw porcelain and preparation method and application thereof | |
| CN114163850A (en) | Composite material metal high-temperature-resistant anti-oxidation coating and preparation method thereof | |
| CN104319043B (en) | Manufacturing method of negative-temperature-coefficient thermistor chip electrode | |
| CN112624741A (en) | Method for preparing high-purity magnesia ceramic setter plate green body by tape casting | |
| CN114180980B (en) | Self-toughening 99 alumina ceramic substrate and preparation method thereof | |
| CN112142498A (en) | Backing plate for simultaneous sintering of copper foils on two sides of DBC substrate and preparation method thereof | |
| CN114920567B (en) | Preparation method of alumina slurry and prepared alumina slurry | |
| CN115286409A (en) | Silicon nitride whisker reinforced aluminum nitride composite ceramic material and preparation method thereof | |
| CN105541303B (en) | A kind of new-energy automobile ternary series high-performance fuse porcelain tube | |
| DE102006000402B4 (en) | Corrosion-resistant element and its manufacture and use | |
| JP2022137855A (en) | platinum paste | |
| JP3369780B2 (en) | Manufacturing method of glass ceramic composite substrate | |
| JP4000813B2 (en) | Sputtering target | |
| CN115028436B (en) | Low-shrinkage high-temperature-resistant alumina material and preparation method and application thereof | |
| JPS6049149B2 (en) | Manufacturing method of white alumina/ceramic for electronic parts | |
| KR100473817B1 (en) | A process for producing glass frit powder for pdp pastes | |
| CN116081948B (en) | High-temperature-resistant and oxidation-resistant ceramic material and application method thereof | |
| CN115611639B (en) | Silicon wafer casting slurry and silicon wafer forming method |
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 |