CN112479714A - Preparation method of strontium feldspar combined silicon carbide diesel particle filter - Google Patents
Preparation method of strontium feldspar combined silicon carbide diesel particle filter Download PDFInfo
- Publication number
- CN112479714A CN112479714A CN202011396431.6A CN202011396431A CN112479714A CN 112479714 A CN112479714 A CN 112479714A CN 202011396431 A CN202011396431 A CN 202011396431A CN 112479714 A CN112479714 A CN 112479714A
- Authority
- CN
- China
- Prior art keywords
- silicon carbide
- pug
- strontium
- uniform mixture
- kneading
- 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
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 105
- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 103
- 239000002245 particle Substances 0.000 title claims abstract description 80
- 229910052712 strontium Inorganic materials 0.000 title claims abstract description 70
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 239000010433 feldspar Substances 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000004898 kneading Methods 0.000 claims abstract description 72
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 65
- 239000000203 mixture Substances 0.000 claims abstract description 62
- 239000000654 additive Substances 0.000 claims abstract description 46
- BDAGIHXWWSANSR-NJFSPNSNSA-N hydroxyformaldehyde Chemical compound O[14CH]=O BDAGIHXWWSANSR-NJFSPNSNSA-N 0.000 claims abstract description 36
- 229910000018 strontium carbonate Inorganic materials 0.000 claims abstract description 36
- 239000011230 binding agent Substances 0.000 claims abstract description 34
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 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 30
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 27
- 238000005245 sintering Methods 0.000 claims abstract description 23
- 238000005520 cutting process Methods 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 16
- 238000012856 packing Methods 0.000 claims abstract description 16
- 238000007670 refining Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000000996 additive effect Effects 0.000 claims description 41
- 229920000609 methyl cellulose Polymers 0.000 claims description 28
- 239000001923 methylcellulose Substances 0.000 claims description 28
- 235000010981 methylcellulose Nutrition 0.000 claims description 28
- 239000004094 surface-active agent Substances 0.000 claims description 15
- 235000014121 butter Nutrition 0.000 claims description 2
- 235000012424 soybean oil Nutrition 0.000 claims description 2
- 239000003549 soybean oil Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 abstract description 2
- 239000000919 ceramic Substances 0.000 description 18
- KAKVFSYQVNHFBS-UHFFFAOYSA-N (5-hydroxycyclopenten-1-yl)-phenylmethanone Chemical group OC1CCC=C1C(=O)C1=CC=CC=C1 KAKVFSYQVNHFBS-UHFFFAOYSA-N 0.000 description 13
- 239000000463 material Substances 0.000 description 8
- 239000012071 phase Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 238000009826 distribution Methods 0.000 description 4
- 238000001878 scanning electron micrograph Methods 0.000 description 4
- 239000012298 atmosphere Substances 0.000 description 3
- 229910052878 cordierite Inorganic materials 0.000 description 3
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052917 strontium silicate Inorganic materials 0.000 description 1
- QSQXISIULMTHLV-UHFFFAOYSA-N strontium;dioxido(oxo)silane Chemical compound [Sr+2].[O-][Si]([O-])=O QSQXISIULMTHLV-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Images
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
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2068—Other inorganic materials, e.g. ceramics
- B01D39/2072—Other inorganic materials, e.g. ceramics the material being particulate or granular
- B01D39/2075—Other inorganic materials, e.g. ceramics the material being particulate or granular sintered or bonded by inorganic agents
-
- 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
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0006—Honeycomb structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/10—Filtering material manufacturing
-
- 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
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- 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
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
- C04B2235/3481—Alkaline earth metal alumino-silicates other than clay, e.g. cordierite, beryl, micas such as margarite, plagioclase feldspars such as anorthite, zeolites such as chabazite
-
- 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
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/442—Carbonates
-
- 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)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Filtering Materials (AREA)
Abstract
The invention provides a preparation method of a strontium feldspar combined silicon carbide diesel particulate filter, which comprises the following operation steps: (1) uniformly mixing and stirring silicon carbide micro powder, alumina, strontium carbonate, silicon dioxide and a binder to prepare a uniform mixture with compact packing; (2) adding the uniform mixture into a kneading machine, continuously adding water and additives into the kneading machine, and kneading to obtain pug; (3) refining the pug into pug sections, and then slicing the pug sections; (4) extruding the mud segment with an outer skin to form a green body with a honeycomb structure, and then carrying out microwave and drying to obtain a green body; (5) and cutting the dried green body into a fixed height, and sintering to obtain the strontium feldspar combined silicon carbide diesel particle filter. The invention uses the novel adhesive to combine the silicon carbide particles, has low manufacturing cost, high temperature resistance, good oxidation resistance and simple sintering process, and fundamentally solves the problems of high cost and low production efficiency.
Description
Technical Field
The invention relates to the technical field of diesel particulate filters, in particular to a preparation method of a strontium feldspar combined silicon carbide diesel particulate filter.
Background
The automobile brings convenience to our lives, and meanwhile, the air pollution caused by automobile exhaust is increasingly serious. The environmental pollution and the automobile growth amount are in a direct proportion relation. Therefore, the treatment of the automobile exhaust is very important. With the increasingly strict requirements on the emission of automobile exhaust, the mainstream catalyst carrier materials in the market mainly comprise cordierite, silicon carbide and the like. On the one hand, the traditional cordierite porous ceramic is low in price, but the highest temperature resistance is generally not more than 1300 ℃, the use temperature is low, and the cordierite porous ceramic is easy to damage and poor in corrosion resistance, so that disastrous accidents are caused. On the other hand, the silicon carbide porous ceramics have high cost price although the high temperature strength can be maintained up to 1600 ℃.
Disclosure of Invention
In order to solve the problems that the silicon carbide porous ceramic is high in cost and the traditional porous ceramic is low in high-temperature strength, the invention develops a product combining strontium feldspar (made of aluminum oxide, strontium carbonate and silicon dioxide) with a silicon carbide diesel particulate filter, and has the advantages that the advantages of excellent mechanical property, high temperature-resistant strength and good oxidation resistance of a silicon carbide material are kept, and the silicon carbide porous ceramic is sintered under normal pressure by using an oxidizing atmosphere, so that the manufacturing cost of the silicon carbide porous ceramic is greatly reduced. In addition, the strontium feldspar formed at about 1100 ℃ has higher thermal stability, the matching degree of the thermal expansion coefficients of the strontium feldspar phase and the silicon carbide phase is very high, the service durability of the strontium feldspar combined with the silicon carbide porous ceramic is ensured, the strontium feldspar glass phase also has a certain adhesive effect, and the compression strength and the oxidation resistance of the porous ceramic are greatly improved. Meanwhile, in the process of forming the strontium feldspar, the strontium feldspar glass phase is melted and wrapped, so that the bonding strength is improved, a protective layer is formed to prevent silicon carbide particles from being oxidized, micropores with good connectivity can be formed, the filtering efficiency is improved, and excellent pore distribution is obtained. In the aspect of raw material selection, the invention adopts the shaped silicon carbide micro powder, thereby ensuring the narrow distribution of the formed micropore holes, good connectivity and proper particle micro morphology.
The invention is realized by the following technical scheme.
A preparation method of a strontium feldspar combined silicon carbide diesel particulate filter comprises the following operation steps:
(1) according to the weight portion, 80-95 portions of silicon carbide micro powder, 1.4-5.5 portions of alumina, 2.0-8.0 portions of strontium carbonate, 0-6.5 portions of silicon dioxide and a binder are mixed and stirred uniformly to prepare a uniform mixture with close packing, wherein the addition amount of the binder is 6.5% of the total mass of the silicon carbide micro powder, the alumina, the strontium carbonate and the silicon dioxide;
(2) adding the uniform mixture prepared in the step (1) into a kneader, continuously adding water accounting for 27% of the mass of the uniform mixture and additives accounting for 0.5% of the mass of the uniform mixture into the kneader, and kneading to obtain pug;
(3) refining the pug into pug sections, and then slicing the pug sections;
(4) extruding the mud segment with an outer skin to form a green body with a honeycomb structure, and then carrying out microwave and drying to obtain a green body;
(5) and cutting the dried green body into a fixed height, and sintering to obtain the strontium feldspar combined silicon carbide diesel particle filter.
Specifically, in the step (1), the particle size of the silicon carbide micro powder is 25-42 μm.
Specifically, in the step (1), the average particle size of alumina is 3 to 6 μm, the average particle size of strontium carbonate is 3 to 6 μm, and the average particle size of silica is 3 to 6 μm.
Specifically, in the step (1), the binder is any one of methyl cellulose, PVA, and PET.
Specifically, in the step (2), the additive is any one of soybean oil, butter and a surfactant.
Specifically, in the above step (2), the kneading treatment is specifically performed by: after adding water, starting a kneader to knead for 7min, and then adding additives to knead for 10 min.
Specifically, in the step (5), the temperature during the sintering process is 1350-.
According to the technical scheme, the beneficial effects of the invention are as follows:
the invention uses the novel adhesive to combine the silicon carbide particles, has low manufacturing cost, high temperature resistance, good oxidation resistance and simple sintering process, and fundamentally solves the problems of high cost and low production efficiency. The average thermal expansion coefficient of the strontium feldspar at room temperature to 1000 ℃ is 4 multiplied by 10-6Around/° c, the material has a low coefficient of thermal expansion, and the coefficient of thermal expansion of the material is very well matched with that of silicon carbide. Meanwhile, the strontium feldspar glass phase also has a certain gluing effect, is melted and wrapped around the silicon carbide particles, and has excellent oxidation resistance and normal-temperature mechanical properties. And, Sr-Al2O3-SiO2The system has high thermal stability, the excellent performance comes from monoclinic strontium feldspar of a main crystal phase generated in the system, the monoclinic strontium feldspar has high temperature stability, the melting point (1650 ℃) of the monoclinic strontium feldspar is kept stable, and the monoclinic strontium feldspar and the melting point of silicon carbide form high matching degree, so that the strontium feldspar and the silicon carbide-based porous ceramic have excellent temperature resistance. The diesel particle filter made of the material is sintered at the temperature of 1400 ℃ in normal pressure oxidation atmosphere completely and commonlyAnd the sintering process is simplified, the production cost is reduced, and the production efficiency is improved.
Drawings
FIG. 1 is a thermal expansion coefficient diagram of strontium feldspar.
FIG. 2 is a SEM image of shaped silicon carbide powder.
FIG. 3 is an SEM micrograph of the strontium feldspar-bonded silicon carbide-based porous ceramic obtained in example 1 of the present invention.
FIG. 4 is an SEM micrograph of the strontium feldspar-bonded silicon carbide-based porous ceramic obtained in example 2 of the present invention.
FIG. 5 is an SEM micrograph of the strontium feldspar-bonded silicon carbide-based porous ceramic obtained in example 3 of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
A preparation method of a strontium feldspar combined silicon carbide diesel particulate filter comprises the following operation steps:
(1) according to parts by weight, 95 parts of silicon carbide micro powder with the particle size range of 25-28 microns, 1.4 parts of alumina with the particle size range of 3-6 microns, 2.0 parts of strontium carbonate with the particle size range of 3-6 microns, 1.6 parts of silicon dioxide with the particle size range of 3-6 microns and a binder are uniformly mixed and stirred to prepare a uniform mixture with close packing, wherein the binder is methyl cellulose, and the addition amount of the methyl cellulose is 6.5% of the total mass of the silicon carbide micro powder, the alumina, the strontium carbonate and the silicon dioxide;
(2) adding the uniform mixture prepared in the step (1) into a kneader, continuously adding water accounting for 27% of the mass of the uniform mixture and an additive accounting for 0.5% of the mass of the uniform mixture into the kneader, and kneading to obtain pug, wherein the additive is potassium laurate in a surfactant, and the specific operation of the kneading is as follows: adding water, starting a kneading machine for kneading for 7min, and then adding an additive for kneading for 10 min;
(3) refining the pug into pug sections, and then slicing the pug sections;
(4) extruding the mud segment with an outer skin to form a green body with a honeycomb structure, and then carrying out microwave and drying to obtain a green body;
(5) and cutting the dried green body into a fixed height, and sintering at 1350 ℃ to obtain the strontium feldspar combined silicon carbide diesel particle filter.
Example 2
A preparation method of a strontium feldspar combined silicon carbide diesel particulate filter comprises the following operation steps:
(1) according to parts by weight, 90 parts of silicon carbide micro powder with the particle size range of 25-28 microns, 2.8 parts of alumina with the particle size range of 3-6 microns, 4 parts of strontium carbonate with the particle size range of 3-6 microns, 3.3 parts of silicon dioxide with the particle size range of 3-6 microns and a binder are uniformly mixed and stirred to prepare a uniform mixture with close packing, wherein the binder is methyl cellulose, and the addition amount of the methyl cellulose is 6.5% of the total mass of the silicon carbide micro powder, the alumina, the strontium carbonate and the silicon dioxide;
(2) adding the uniform mixture prepared in the step (1) into a kneader, continuously adding water accounting for 27% of the mass of the uniform mixture and an additive accounting for 0.5% of the mass of the uniform mixture into the kneader, and kneading to obtain pug, wherein the additive is potassium laurate in a surfactant, and the specific operation of the kneading is as follows: adding water, starting a kneading machine for kneading for 7min, and then adding an additive for kneading for 10 min;
(3) refining the pug into pug sections, and then slicing the pug sections;
(4) extruding the mud segment with an outer skin to form a green body with a honeycomb structure, and then carrying out microwave and drying to obtain a green body;
(5) and cutting the dried green body into a fixed height, and sintering at 1350 ℃ to obtain the strontium feldspar combined silicon carbide diesel particle filter.
Example 3
A preparation method of a strontium feldspar combined silicon carbide diesel particulate filter comprises the following operation steps:
(1) according to parts by weight, 85 parts of silicon carbide micro powder with the particle size range of 25-28 microns, 4.0 parts of alumina with the particle size range of 3-6 microns, 6 parts of strontium carbonate with the particle size range of 3-6 microns, 4.8 parts of silicon dioxide with the particle size range of 3-6 microns and a binder are uniformly mixed and stirred to prepare a uniform mixture with close packing, wherein the binder is methyl cellulose, and the addition amount of the methyl cellulose is 6.5% of the total mass of the silicon carbide micro powder, the alumina, the strontium carbonate and the silicon dioxide;
(2) adding the uniform mixture prepared in the step (1) into a kneader, continuously adding water accounting for 27% of the mass of the uniform mixture and an additive accounting for 0.5% of the mass of the uniform mixture into the kneader, and kneading to obtain pug, wherein the additive is potassium laurate in a surfactant, and the specific operation of the kneading is as follows: adding water, starting a kneading machine for kneading for 7min, and then adding an additive for kneading for 10 min;
(3) refining the pug into pug sections, and then slicing the pug sections;
(4) extruding the mud segment with an outer skin to form a green body with a honeycomb structure, and then carrying out microwave and drying to obtain a green body;
(5) and cutting the dried green body into a fixed height, and sintering at 1350 ℃ to obtain the strontium feldspar combined silicon carbide diesel particle filter.
Example 4
A preparation method of a strontium feldspar combined silicon carbide diesel particulate filter comprises the following operation steps:
(1) according to parts by weight, 80 parts of silicon carbide micro powder with the particle size range of 25-28 microns, 5.5 parts of alumina with the particle size range of 3-6 microns, 8.0 parts of strontium carbonate with the particle size range of 3-6 microns, 6.5 parts of silicon dioxide with the particle size range of 3-6 microns and a binder are uniformly mixed and stirred to prepare a uniform mixture with close packing, wherein the binder is methyl cellulose, and the addition amount of the methyl cellulose is 6.5% of the total mass of the silicon carbide micro powder, the alumina, the strontium carbonate and the silicon dioxide;
(2) adding the uniform mixture prepared in the step (1) into a kneader, continuously adding water accounting for 27% of the mass of the uniform mixture and an additive accounting for 0.5% of the mass of the uniform mixture into the kneader, and kneading to obtain pug, wherein the additive is potassium laurate in a surfactant, and the specific operation of the kneading is as follows: adding water, starting a kneading machine for kneading for 7min, and then adding an additive for kneading for 10 min;
(3) refining the pug into pug sections, and then slicing the pug sections;
(4) extruding the mud segment with an outer skin to form a green body with a honeycomb structure, and then carrying out microwave and drying to obtain a green body;
(5) and cutting the dried green body into a fixed height, and sintering at 1380 ℃ to obtain the strontium feldspar combined silicon carbide diesel particle filter.
Example 5
A preparation method of a strontium feldspar combined silicon carbide diesel particulate filter comprises the following operation steps:
(1) according to parts by weight, 95 parts of silicon carbide micro powder with the particle size range of 25-28 microns, 1.4 parts of alumina with the particle size range of 3-6 microns, 2.0 parts of strontium carbonate with the particle size range of 3-6 microns, 1.6 parts of silicon dioxide with the particle size range of 3-6 microns and a binder are uniformly mixed and stirred to prepare a uniform mixture with close packing, wherein the binder is methyl cellulose, and the addition amount of the methyl cellulose is 6.5% of the total mass of the silicon carbide micro powder, the alumina, the strontium carbonate and the silicon dioxide;
(2) adding the uniform mixture prepared in the step (1) into a kneader, continuously adding water accounting for 27% of the mass of the uniform mixture and an additive accounting for 0.5% of the mass of the uniform mixture into the kneader, and kneading to obtain pug, wherein the additive is potassium laurate in a surfactant, and the specific operation of the kneading is as follows: adding water, starting a kneading machine for kneading for 7min, and then adding an additive for kneading for 10 min;
(3) refining the pug into pug sections, and then slicing the pug sections;
(4) extruding the mud segment with an outer skin to form a green body with a honeycomb structure, and then carrying out microwave and drying to obtain a green body;
(5) and cutting the dried green body into a fixed height, and sintering at 1390 ℃ to obtain the strontium feldspar bonded silicon carbide diesel particle filter.
Example 6
A preparation method of a strontium feldspar combined silicon carbide diesel particulate filter comprises the following operation steps:
(1) according to parts by weight, 90 parts of silicon carbide micro powder with the particle size range of 25-28 microns, 2.8 parts of alumina with the particle size range of 3-6 microns, 4 parts of strontium carbonate with the particle size range of 3-6 microns, 3.3 parts of silicon dioxide with the particle size range of 3-6 microns and a binder are uniformly mixed and stirred to prepare a uniform mixture with close packing, wherein the binder is methyl cellulose, and the addition amount of the methyl cellulose is 6.5% of the total mass of the silicon carbide micro powder, the alumina, the strontium carbonate and the silicon dioxide;
(2) adding the uniform mixture prepared in the step (1) into a kneader, continuously adding water accounting for 27% of the mass of the uniform mixture and an additive accounting for 0.5% of the mass of the uniform mixture into the kneader, and kneading to obtain pug, wherein the additive is potassium laurate in a surfactant, and the specific operation of the kneading is as follows: adding water, starting a kneading machine for kneading for 7min, and then adding an additive for kneading for 10 min;
(3) refining the pug into pug sections, and then slicing the pug sections;
(4) extruding the mud segment with an outer skin to form a green body with a honeycomb structure, and then carrying out microwave and drying to obtain a green body;
(5) and cutting the dried green body into a fixed height, and sintering at 1400 ℃ to obtain the strontium feldspar bonded silicon carbide diesel particle filter.
Example 7
A preparation method of a strontium feldspar combined silicon carbide diesel particulate filter comprises the following operation steps:
(1) according to parts by weight, 95 parts of silicon carbide micro powder with the particle size range of 25-28 microns, 1.4 parts of alumina with the particle size range of 3-6 microns, 2.0 parts of strontium carbonate with the particle size range of 3-6 microns, 1.6 parts of silicon dioxide with the particle size range of 3-6 microns and a binder are uniformly mixed and stirred to prepare a uniform mixture with close packing, wherein the binder is methyl cellulose, and the addition amount of the methyl cellulose is 6.5% of the total mass of the silicon carbide micro powder, the alumina, the strontium carbonate and the silicon dioxide;
(2) adding the uniform mixture prepared in the step (1) into a kneader, continuously adding water accounting for 27% of the mass of the uniform mixture and an additive accounting for 0.5% of the mass of the uniform mixture into the kneader, and kneading to obtain pug, wherein the additive is potassium laurate in a surfactant, and the specific operation of the kneading is as follows: adding water, starting a kneading machine for kneading for 7min, and then adding an additive for kneading for 10 min;
(3) refining the pug into pug sections, and then slicing the pug sections;
(4) extruding the mud segment with an outer skin to form a green body with a honeycomb structure, and then carrying out microwave and drying to obtain a green body;
(5) and cutting the dried green body into a fixed height, and sintering at 1430 ℃ to obtain the strontium feldspar combined silicon carbide diesel particle filter.
Example 8
A preparation method of a strontium feldspar combined silicon carbide diesel particulate filter comprises the following operation steps:
(1) according to parts by weight, 90 parts of silicon carbide micro powder with the particle size range of 25-28 microns, 2.8 parts of alumina with the particle size range of 3-6 microns, 4.0 parts of strontium carbonate with the particle size range of 3-6 microns, 3.3 parts of silicon dioxide with the particle size range of 3-6 microns and a binder are uniformly mixed and stirred to prepare a uniform mixture with close packing, wherein the binder is methyl cellulose, and the addition amount of the methyl cellulose is 6.5% of the total mass of the silicon carbide micro powder, the alumina, the strontium carbonate and the silicon dioxide;
(2) adding the uniform mixture prepared in the step (1) into a kneader, continuously adding water accounting for 27% of the mass of the uniform mixture and an additive accounting for 0.5% of the mass of the uniform mixture into the kneader, and kneading to obtain pug, wherein the additive is potassium laurate in a surfactant, and the specific operation of the kneading is as follows: adding water, starting a kneading machine for kneading for 7min, and then adding an additive for kneading for 10 min;
(3) refining the pug into pug sections, and then slicing the pug sections;
(4) extruding the mud segment with an outer skin to form a green body with a honeycomb structure, and then carrying out microwave and drying to obtain a green body;
(5) and cutting the dried green body into a fixed height, and sintering at 1440 ℃ to obtain the strontium feldspar combined silicon carbide diesel particle filter.
Example 9
A preparation method of a strontium feldspar combined silicon carbide diesel particulate filter comprises the following operation steps:
(1) mixing 96.6 parts by weight of silicon carbide micro powder with the particle size range of 38-42 mu m, 1.4 parts by weight of alumina with the particle size range of 3-6 mu m, 2.0 parts by weight of strontium carbonate with the particle size range of 3-6 mu m and a binder uniformly, and stirring uniformly to prepare a uniform mixture with close packing, wherein the binder is methyl cellulose, and the addition amount of the methyl cellulose is 6.5% of the total mass of the silicon carbide micro powder, the alumina and the strontium carbonate;
(2) adding the uniform mixture prepared in the step (1) into a kneader, continuously adding water accounting for 27% of the mass of the uniform mixture and an additive accounting for 0.5% of the mass of the uniform mixture into the kneader, and kneading to obtain pug, wherein the additive is potassium laurate in a surfactant, and the specific operation of the kneading is as follows: adding water, starting a kneading machine for kneading for 7min, and then adding an additive for kneading for 10 min;
(3) refining the pug into pug sections, and then slicing the pug sections;
(4) extruding the mud segment with an outer skin to form a green body with a honeycomb structure, and then carrying out microwave and drying to obtain a green body;
(5) and cutting the dried green body into a fixed height, and sintering at 1450 ℃ to obtain the strontium feldspar combined silicon carbide diesel particle filter.
Example 10
A preparation method of a strontium feldspar combined silicon carbide diesel particulate filter comprises the following operation steps:
(1) according to parts by weight, 93 parts of silicon carbide micro powder with the particle size range of 38-42 mu m, 2.8 parts of alumina with the particle size range of 3-6 mu m, 4.1 parts of strontium carbonate with the particle size range of 3-6 mu m and a binder are mixed and stirred uniformly to prepare a uniform mixture with compact packing, wherein the binder is methyl cellulose, and the addition amount of the methyl cellulose is 6.5 percent of the total mass of the silicon carbide micro powder, the alumina and the strontium carbonate;
(2) adding the uniform mixture prepared in the step (1) into a kneader, continuously adding water accounting for 27% of the mass of the uniform mixture and an additive accounting for 0.5% of the mass of the uniform mixture into the kneader, and kneading to obtain pug, wherein the additive is potassium laurate in a surfactant, and the specific operation of the kneading is as follows: adding water, starting a kneading machine for kneading for 7min, and then adding an additive for kneading for 10 min;
(3) refining the pug into pug sections, and then slicing the pug sections;
(4) extruding the mud segment with an outer skin to form a green body with a honeycomb structure, and then carrying out microwave and drying to obtain a green body;
(5) and cutting the dried green body into a fixed height, and sintering at 1450 ℃ to obtain the strontium feldspar combined silicon carbide diesel particle filter.
Comparative example 1
A preparation method of a strontium feldspar combined silicon carbide diesel particulate filter comprises the following operation steps:
(1) according to parts by weight, 27.6 parts of alumina with the particle size range of 3-6 mu m, 39.9 parts of strontium carbonate with the particle size range of 3-6 mu m, 32.5 parts of silicon dioxide with the particle size range of 3-6 mu m and a binder are mixed and stirred uniformly to prepare a uniform mixture with close packing, wherein the binder is methyl cellulose, and the addition amount of the methyl cellulose is 6.5 percent of the total mass of the alumina, the strontium carbonate and the silicon dioxide;
(2) adding the uniform mixture prepared in the step (1) into a kneader, continuously adding water accounting for 27% of the mass of the uniform mixture and an additive accounting for 0.5% of the mass of the uniform mixture into the kneader, and kneading to obtain pug, wherein the additive is potassium laurate in a surfactant, and the specific operation of the kneading is as follows: adding water, starting a kneading machine for kneading for 7min, and then adding an additive for kneading for 10 min;
(3) refining the pug into pug sections, and then slicing the pug sections;
(4) extruding the mud segment with an outer skin to form a green body with a honeycomb structure, and then carrying out microwave and drying to obtain a green body;
(5) and cutting the dried green body into a fixed height, and sintering at 1450 ℃ to obtain the strontium feldspar combined silicon carbide diesel particle filter.
Comparative example 2
A preparation method of a strontium feldspar combined silicon carbide diesel particulate filter comprises the following operation steps:
(1) according to the weight portion, 90 portions of silicon carbide micro powder with the grain size range of 18-20 μm, 7 portions of strontium carbonate with the grain size range of 3-6 μm, 3 portions of silicon dioxide with the grain size range of 3-6 μm and a binder are mixed and stirred uniformly to prepare a uniform mixture with close packing, wherein the binder is methyl cellulose, and the adding amount of the methyl cellulose is 6.5 percent of the total mass of the silicon carbide micro powder, the strontium carbonate and the silicon dioxide;
(2) adding the uniform mixture prepared in the step (1) into a kneader, continuously adding water accounting for 27% of the mass of the uniform mixture and an additive accounting for 0.5% of the mass of the uniform mixture into the kneader, and kneading to obtain pug, wherein the additive is potassium laurate in a surfactant, and the specific operation of the kneading is as follows: adding water, starting a kneading machine for kneading for 7min, and then adding an additive for kneading for 10 min;
(3) refining the pug into pug sections, and then slicing the pug sections;
(4) extruding the mud segment with an outer skin to form a green body with a honeycomb structure, and then carrying out microwave and drying to obtain a green body;
(5) and cutting the dried green body into a fixed height, and sintering at 1450 ℃ to obtain the strontium feldspar combined silicon carbide diesel particle filter.
Comparative example 3
A preparation method of a strontium feldspar combined silicon carbide diesel particulate filter comprises the following operation steps:
(1) according to the weight portion, 93 portions of silicon carbide micro powder with the grain size range of 18-20 μm, 7.2 portions of strontium carbonate with the grain size range of 3-6 μm and a binder are mixed and stirred uniformly to prepare a uniform mixture with compact packing, wherein the binder is methyl cellulose, and the addition amount of the methyl cellulose is 6.5 percent of the total mass of the silicon carbide micro powder and the strontium carbonate;
(2) adding the uniform mixture prepared in the step (1) into a kneader, continuously adding water accounting for 27% of the mass of the uniform mixture and an additive accounting for 0.5% of the mass of the uniform mixture into the kneader, and kneading to obtain pug, wherein the additive is potassium laurate in a surfactant, and the specific operation of the kneading is as follows: adding water, starting a kneading machine for kneading for 7min, and then adding an additive for kneading for 10 min;
(3) refining the pug into pug sections, and then slicing the pug sections;
(4) extruding the mud segment with an outer skin to form a green body with a honeycomb structure, and then carrying out microwave and drying to obtain a green body;
(5) and cutting the dried green body into a fixed height, and sintering at 1440 ℃ to obtain the strontium feldspar combined silicon carbide diesel particle filter.
The strontium feldspar and silicon carbide-bonded diesel particulate filters were prepared by the methods of the respective examples and comparative examples, and then tested for their performance, the results of which are shown in table 1:
TABLE 1 strontium feldspar in combination with silicon carbide diesel particulate filter performance test results
For comparison of pressure drop for the embodiments, the above examples and comparative examples prepared samples 304.8mm in diameter, 127mm in height, 300cpsi in cell density, and 9mil in wall thickness, although the diameter, height, cell density, and wall thickness of the materials are not limited thereto.
It can be seen from comparison of examples 1-4 that the higher the content of strontium feldspar in the system, the lower the expansion coefficient of the fired product, the smaller the porosity of the product, and the larger the pore size, which indicates that the formation of strontium feldspar phase has the tendency of pore-forming, and can be used as a pore-forming agent, as well as a binder and an antioxidant protection layer of a silicon carbide material, thereby significantly reducing the production cost.
Compared with the comparative examples 1 to 4 and 1 to 3, the strontium feldspar material and the silicon carbide material have very high matching degree of thermal expansion coefficients, so that the combination of the strontium feldspar and the silicon carbide is more favorable for preparing the porous ceramic, and the ceramic materials formed by combining other feldspar such as strontium silicate and the like and the silicon carbide mostly have higher thermal expansion coefficients, so that the risks of cracking of products and falling of hole plugging mud are increased.
Comparing examples 5 to 6 and examples 7 to 8, the finer the added silicon carbide particles when forming the strontium feldspar, the slightly larger the thermal expansion coefficient of the porous ceramic formed, and at the same time, the more significant the influence of the strontium feldspar on the porosity and pore size of the product, because the finer silicon carbide particles are more easily oxidized during sintering, and the liquid phase of the strontium feldspar is wrapped around the finer particles, the more significant the influence on the porosity and pore size.
Comparing examples 5-6 and examples 9-10, it was attempted to form a strontium feldspar phase by using silica formed by oxidizing silicon carbide particles during sintering without adding silica, and alumina and strontium carbonate, but since there is no protective layer of silica, the silicon carbide particles are more easily oxidized to increase the thermal expansion coefficient, and the control of the porosity and pore size is more difficult to grasp.
Therefore, the invention uses a mode similar to that of examples 5-6, uses silicon carbide particles with proper particle size, and adds silicon dioxide, aluminum oxide and strontium carbonate to prepare the strontium feldspar combined silicon carbide diesel particulate filter, which has excellent micropore distribution, is easier to control the change trend of porosity and pore diameter, and improves the stability of the micropore distribution of the porous ceramic. The porous ceramic is sintered by using the oxidizing atmosphere, so that the production cost for manufacturing the silicon carbide porous ceramic is greatly reduced.
Although the present application has been described with reference to a few embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application as defined by the appended claims.
Claims (7)
1. The preparation method of the strontium feldspar combined silicon carbide diesel particulate filter is characterized by comprising the following operation steps of:
(1) according to the weight portion, 80-95 portions of silicon carbide micro powder, 1.4-5.5 portions of alumina, 2.0-8.0 portions of strontium carbonate, 0-6.5 portions of silicon dioxide and a binder are mixed and stirred uniformly to prepare a uniform mixture with close packing, wherein the addition amount of the binder is 6.5% of the total mass of the silicon carbide micro powder, the alumina, the strontium carbonate and the silicon dioxide;
(2) adding the uniform mixture prepared in the step (1) into a kneader, continuously adding water accounting for 27% of the mass of the uniform mixture and additives accounting for 0.5% of the mass of the uniform mixture into the kneader, and kneading to obtain pug;
(3) refining the pug into pug sections, and then slicing the pug sections;
(4) extruding the mud segment with an outer skin to form a green body with a honeycomb structure, and then carrying out microwave and drying to obtain a green body;
(5) and cutting the dried green body into a fixed height, and sintering to obtain the strontium feldspar combined silicon carbide diesel particle filter.
2. The method for preparing a strontium feldspar-bonded silicon carbide diesel particulate filter according to claim 1, wherein in the step (1), the particle size of the silicon carbide micro powder is 25-42 μm.
3. The method for preparing a strontium feldspar-bonded silicon carbide diesel particulate filter according to claim 1, wherein in the step (1), the average particle size of alumina is 3 to 6 μm, the average particle size of strontium carbonate is 3 to 6 μm, and the average particle size of silica is 3 to 6 μm.
4. The method for preparing a strontium feldspar bonded silicon carbide diesel particulate filter according to claim 1, wherein in the step (1), the binder is any one of methyl cellulose, PVA and PET.
5. The method for preparing a strontium feldspar bonded silicon carbide-based diesel particulate filter according to claim 1, wherein in the step (2), the additive is any one of soybean oil, butter and surfactant.
6. The method for preparing a strontium feldspar bonded silicon carbide diesel particulate filter according to claim 1, wherein in the step (2), the kneading treatment is performed by: after adding water, starting a kneader to knead for 7min, and then adding additives to knead for 10 min.
7. The method for preparing a strontium feldspar bonded silicon carbide diesel particulate filter according to claim 1, wherein the sintering temperature in the step (5) is 1350-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011396431.6A CN112479714A (en) | 2020-12-03 | 2020-12-03 | Preparation method of strontium feldspar combined silicon carbide diesel particle filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011396431.6A CN112479714A (en) | 2020-12-03 | 2020-12-03 | Preparation method of strontium feldspar combined silicon carbide diesel particle filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112479714A true CN112479714A (en) | 2021-03-12 |
Family
ID=74939041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011396431.6A Pending CN112479714A (en) | 2020-12-03 | 2020-12-03 | Preparation method of strontium feldspar combined silicon carbide diesel particle filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112479714A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050158534A1 (en) * | 2002-03-29 | 2005-07-21 | Ngk Insulators, Ltd. | Silicon carbide based porous material and method for production thereof |
| US20060121239A1 (en) * | 2002-12-11 | 2006-06-08 | Masahiro Furukawa | Silicon carbine based porous material and method for preparation thereof, and honeycomb structure |
| US20070033912A1 (en) * | 2003-07-25 | 2007-02-15 | Ngk Insulators, Ltd. | Ceramic porous body and method for evaluating its permeability |
| US20110129640A1 (en) * | 2009-11-30 | 2011-06-02 | George Halsey Beall | Method and binder for porous articles |
| CN105481367A (en) * | 2015-11-24 | 2016-04-13 | 凯龙蓝烽新材料科技有限公司 | Filter for trapping diesel engine soot particles, and making method thereof |
| US20180112576A1 (en) * | 2016-10-24 | 2018-04-26 | Ngk Insulators, Ltd. | Porous material, honeycomb structure, and method of producing porous material |
| JP2018199608A (en) * | 2016-10-24 | 2018-12-20 | 日本碍子株式会社 | Porous material, honeycomb structure, and manufacturing method of porous material |
-
2020
- 2020-12-03 CN CN202011396431.6A patent/CN112479714A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050158534A1 (en) * | 2002-03-29 | 2005-07-21 | Ngk Insulators, Ltd. | Silicon carbide based porous material and method for production thereof |
| US20060121239A1 (en) * | 2002-12-11 | 2006-06-08 | Masahiro Furukawa | Silicon carbine based porous material and method for preparation thereof, and honeycomb structure |
| US20070033912A1 (en) * | 2003-07-25 | 2007-02-15 | Ngk Insulators, Ltd. | Ceramic porous body and method for evaluating its permeability |
| US20110129640A1 (en) * | 2009-11-30 | 2011-06-02 | George Halsey Beall | Method and binder for porous articles |
| CN105481367A (en) * | 2015-11-24 | 2016-04-13 | 凯龙蓝烽新材料科技有限公司 | Filter for trapping diesel engine soot particles, and making method thereof |
| US20180112576A1 (en) * | 2016-10-24 | 2018-04-26 | Ngk Insulators, Ltd. | Porous material, honeycomb structure, and method of producing porous material |
| CN107973618A (en) * | 2016-10-24 | 2018-05-01 | 日本碍子株式会社 | The manufacture method of porous material, honeycomb structured body and porous material |
| JP2018199608A (en) * | 2016-10-24 | 2018-12-20 | 日本碍子株式会社 | Porous material, honeycomb structure, and manufacturing method of porous material |
Non-Patent Citations (1)
| Title |
|---|
| 姜广鹏等: "壁流式柴油机微粒捕集器材料和结构的研究进展", 《材料导报》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2999680B1 (en) | Porous ceramic article | |
| US9376347B2 (en) | Porous ceramic article and method of manufacturing the same | |
| US8586166B2 (en) | Ceramic sintered body and ceramic filter | |
| US9908260B2 (en) | Porous ceramic article and method of manufacturing the same | |
| RU2500456C1 (en) | Smelt filter and method of its production | |
| EP2937143A1 (en) | Ceramic honeycomb structure and method for producing same | |
| CN108610050A (en) | A kind of porous silicon carbide ceramic and preparation method thereof | |
| WO2005046840A1 (en) | Ceramic body based on aluminum titanate | |
| EP2105424B1 (en) | Method for manufacturing a honeycomb structured body | |
| US8759240B2 (en) | Ceramic-body-forming batch materials comprising silica, methods using the same and ceramic bodies made therefrom | |
| CN102408250A (en) | Ceramic membrane support and preparation method thereof | |
| US11591265B2 (en) | Batch compositions comprising pre-reacted inorganic particles and methods of manufacture of green bodies therefrom | |
| CN112430123A (en) | Narrow-pore-diameter-distribution large-size cordierite gasoline particle filter and preparation method thereof | |
| CN114524675A (en) | Silicon-bonded silicon carbide diesel particulate filter and preparation method thereof | |
| CN107827443B (en) | Compositions and methods for plugging honeycomb bodies with reduced plug depth variation | |
| JP2012504092A (en) | Method for producing porous SiC material | |
| CN108439967A (en) | A kind of low pressure drop, low-expansion large scale diesel particulate filter and preparation method thereof | |
| CN112479714A (en) | Preparation method of strontium feldspar combined silicon carbide diesel particle filter | |
| JP2008303133A (en) | Method for producing raw material for firing silicon carbide, and method for manufacturing honeycomb structure | |
| CN107892577B (en) | Al (aluminum)4SiC4And Al4C3Composite reinforced silicon carbide honeycomb ceramic and preparation method thereof | |
| CN117682865A (en) | Silicon carbide honeycomb ceramic and preparation method and application thereof | |
| CN115093232A (en) | Molecular sieve membrane support and preparation method thereof | |
| CN116832624A (en) | Preparation method of functional ceramic membrane with catalytic ozone | |
| CN115536427A (en) | Porous ceramic material for silicon carbide-based solid-liquid-gas separation and preparation method thereof | |
| JP2009113995A (en) | Method for manufacturing honeycomb structure and raw material composition for honeycomb fired body |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210312 |