CN102976758A - Preparation method of macroporous interconnection SiC ceramics - Google Patents
Preparation method of macroporous interconnection SiC ceramics Download PDFInfo
- Publication number
- CN102976758A CN102976758A CN2012105560265A CN201210556026A CN102976758A CN 102976758 A CN102976758 A CN 102976758A CN 2012105560265 A CN2012105560265 A CN 2012105560265A CN 201210556026 A CN201210556026 A CN 201210556026A CN 102976758 A CN102976758 A CN 102976758A
- Authority
- CN
- China
- Prior art keywords
- sic
- preparation
- bubble
- powder
- temperature
- 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.)
- Granted
Links
Images
Landscapes
- Ceramic Products (AREA)
Abstract
The invention relates to the technical field of ceramic materials, particularly a preparation method of macroporous interconnection SiC ceramics, which comprises the following steps: uniformly mixing SiC powder and boron carbide powder to form a SiC mixture; mixing the SiC mixture, a cationic surfactant and a binding agent polyvinyl alcohol water solution to form a uniform slurry, and manually oscillating or mechanically stirring the slurry to introduce bubbles; putting the uniform slurry subjected to bubble introduction in a closed container, and carrying out a controlled pressure reduction technique; freezing the expanded slurry along with the container at -17 DEG C for 4-12 hours; extracting in absolute ethanol or industrial ethanol under the condition of room temperature or freezing; immersing in a 7 wt% phenol formaldehyde resin ethanol solution, drying the sample at 50-120 DEG C for 4 hours; and in an inert atmosphere, keeping the temperature of 1950-2100 DEG C for 0.5-2 hours to complete sintering. The invention adopts the pressure reduction technique to increase the pore size of the SiC ceramic from submillimeter level to millimeter level, and has the advantages of low production cost and simplified technique.
Description
Technical field
The present invention relates to technical field of ceramic material, be specifically related to the preparation method of the interconnected SiC pottery of a kind of macropore.
Background technology
Large hole silicon carbide has the characteristics such as high temperature resistant, corrosion-resistant, anti-molten metal washes away, high strength, high passband, bigger serface, is used for filtration and stable molten metal liquid and gas in the metallurgical casting field, and can be used as the support of the catalyst under the severe condition.
Preparation for the wide aperture carborundum porous ceramics, research both domestic and external mainly concentrates on hard template method, namely by using presoma, mix with ceramic material powder as template such as polymeric particles, organic foam and inorganic salt etc., then removal template and form porous ceramics in preparation process.As: by carbon dust is mixed by a certain percentage with silicon carbide powder, through pressing mold, high temperature sintering, then carbon granule is removed in air combustion, can prepare wide-aperture carborundum porous ceramics; Use polymer microsphere as template, as utilize starch gel sponge, polyurethane sponge (Yao Xiumin etc., secondary hanging viscosity are on the impact of mesh structural porous silicon carbide ceramics performance, Ceram.Inter.32 (2006), 137, use MgO-Al
2O
3-SiO
2As the mesh structural porous silicon carbide ceramics J. of agglutinant low-temperature sintering Mater. Sci 42 (2007) 4960), carbon sponge (Guo Quangui etc., nanometer AIN content prepares the impact of porous silicon carbide microstructure and mechanical property on sic foam, J. Eur. Ceram. Soc.30 (2010) 113, prepare foam porous silicon carbide from mesoporous pitch and nanometer silicon carbide mixture silicification reaction, Mater. Sci. Eng. A 488 (2008) 514) etc. as template, can prepare the macropore silicon carbide ceramics by hanging, drying and follow-up sintering; In addition, preparation has biomimetic features macropore silicon carbide ceramics as carbon source also can to adopt the timber with macroporous structure.
Yet, mainly relying on hard mould agent or the preparation method of macropore framework material is arranged for the large hole silicon carbide of present preparation, its shortcoming also is apparent: at first aperture and pass will rely on aperture and the pass of template, can't regulate remodeling; Secondly, synthesis step is comparatively loaded down with trivial details, and except the sintering step of pottery, the template that also relates to that has prepares and pre-treatment, comprises the steps such as pore-forming, carbonization; Particularly utilize various cavernous bodies as template, generate easily cinclides (the sponge skeleton stays after decomposing) (Yao Xiumin etc., secondary hanging viscosity is on the impact of mesh structural porous silicon carbide ceramics performance, Ceram. Inter.32 (2006) 137), mechanical property of pottery is disadvantageous behind sintering for improving for this.Therefore all there is complex process in these methods, cost is high and contain the shortcoming such as the hole of holding one's breath, and are subject to certain restrictions in the use.Study a kind of method for preparing cheaply the macropore carbofrax material that structure can design and regulate and have important using value.
In the applicant granted patent (patent No.: 201010580712.7), we have introduced and have a kind ofly caused the method that gel property prepares the interconnected silicon carbide of macropore by means of polyvinyl alcohol cold, the aperture is between 0.1 ~ 0.4mm, and some need not have in the more wide-aperture application advantage to this material at melted metal filtering etc.(preparation method of 0.5 ~ 2mm) interconnected SiC pottery has significant application value to research and develop a kind of more wide aperture.
Summary of the invention
For deficiency of the prior art, the invention provides that a kind of production cost is low, the preparation method of the interconnected SiC pottery of macropore of work simplification and hole diameter enlargement.
The preparation method of the interconnected SiC pottery of a kind of macropore of the present invention may further comprise the steps:
(1) SiC powder and boron carbide powder are mixed composition SiC compound, contain by weight percentage SiC powder 98.92% in the SiC compound, contain boron carbide powder 1.08%;
(2) be (7 ~ 17) by weight with SiC compound, cats product and binding agent polyvinyl alcohol water solution: (0 ~ 3 * 10
-3): 44 mix, and form uniform sizing material, and hand vibration or mechanical stirring slurry are introduced bubble; The uniform sizing material that will draw behind the bubble is put into airtight container, carries out controlled decompression art breading;
(3) after slurry expand into 2 ~ 4 times of original volume, in company with container behind freezing 4 ~ 12h under-17 ℃ of temperature, in dehydrated alcohol or industrial alcohol, extract 4 ~ 24h under room temperature or-17 ℃ of freezing conditions, repeat 1～3 time, then immerse massfraction and be 7% resol ethanolic soln, sample is dry 4h under 50 ~ 120 ℃ of temperature, in inert atmosphere, is incubated 0.5 ~ 2h and finishes sintering under 1950 ~ 2100 ℃ of temperature.
Wherein, the mean particle size of the SiC powder described in the step (1) is 1.0 μ m, and the mean particle size of boron carbide powder is 4.1 μ m;
Binding agent polyvinyl alcohol water solution described in the step (2) is that the polymerization degree of polyvinyl alcohol is 2000, and alcoholysis degree is 99%, and strength of solution is that the polymerization degree of 6.5～7.0wt% or polyvinyl alcohol is 1700, and alcoholysis degree is 99%, and strength of solution is 7.0～8.0wt%;
Cats product described in the step (2) is sodium lauryl sulphate;
The bubble that draws described in the step (2) is by hand vibration or mechanical stirring mode introducing air bubble;
Decompression technique described in the step (2) is that the uniform sizing material that will draw behind the bubble expands through decompression in encloses container, thereby increases the size of bubble;
Resol described in the step (3) is the Resole type, and molecular weight is 600, mainly is be used to drawing carbon.
Characteristics of the present invention and beneficial effect are:
(l) the present invention adopts decompression technique that bubble is expanded through decompression in encloses container, thereby increases the size of bubble, so that the aperture significantly increases on the basis of the size of granted patent report, namely is increased to grade from submillimeter level;
(2) the present invention adopts polyvinyl alcohol as binding agent, and the bubble that vibration is introduced has the stabilization of long period, and its freezing gel characteristic has been brought into play effect at fixed air foam method face, so that need not can realize gel by very harsh freezing conditions;
(3) can make things convenient for and effectively regulate pass, aperture, porosity and UNICOM's degree of macroporous SiC ceramic by the use of micro-tensio-active agent;
(4) adopt ethanol to sample extraction, therefore need not to use expensive freeze drying equipment and long time of drying can realize the maintenance of pore structure and the drying of sample, so that the inventive method is easily organized production, and the mixture of the ethanol after the extraction and water can be through re-using after the simple distillation;
(5) because polyvinyl alcohol is easy to acquisition, and except sintering process and preparation path, do not relate to the use of the template of complicated chemical reaction and sacrifice property, so that the present invention easily organizes production, cost is lower.
Description of drawings
Fig. 1 is slurry puffing pore-forming synoptic diagram;
Fig. 2 is (b) optical microscope photograph behind (a) and the sintering before the macropore silicon carbide ceramic body sintering that makes of embodiment 1, (c) is the stereoscan photograph after (b) figure circled is amplified, and (d) is the graph of pore diameter distribution behind the sintering;
Fig. 3 is optical microscope photograph and the graph of pore diameter distribution behind the sintering (c) of (b) behind (a) and the sintering before the macropore silicon carbide ceramics sintering that makes of embodiment 2;
Fig. 4 is optical microscope photograph (a) and the graph of pore diameter distribution (b) behind the macropore silicon carbide ceramic body sintering that makes of embodiment 3;
Fig. 5 is optical microscope photograph (a) and the graph of pore diameter distribution (b) behind the macropore silicon carbide ceramic body sintering that makes of embodiment 4;
Fig. 6 is optical microscope photograph (a) and the graph of pore diameter distribution (b) behind the macropore silicon carbide ceramic body sintering that makes of embodiment 5.
Embodiment
The present invention will be further described below in conjunction with embodiment.
The microscope model that present embodiment uses is USB Digital microscope, and the scanning electron microscope model is S3400N type scanning electron microscope.
Embodiment 1
(1) SiC powder and boron carbide powder are mixed composition SiC compound, wherein the mean particle size of SiC powder is 1.0 μ m, and the mean particle size of boron carbide powder is 4.1 μ m; Contain by weight percentage SiC powder 98.92% in the SiC compound, contain boron carbide powder 1.08%;
(2) adopt concentration be the polyvinyl alcohol water solution 20-99 of 6.75wt% as binding agent, SiC compound and binding agent polyvinyl alcohol water solution by weight for 7.58:44 mixes, are formed uniform sizing material, mechanical stirring slurry, introducing bubble; The uniform sizing material that will draw behind the bubble is put into airtight container, carries out controlled decompression art breading, makes slurry evenly be expanded to three times of original volume;
(3) slurry after expanding in company with container behind freezing 9h under-17 ℃ of temperature, sample after freezing directly is transferred in the industrial alcohol extraction 5 hours, repeat 1～3 time, then immerse massfraction and be 7% resol ethanolic soln, sample is dry 4h under 80 ℃ of temperature; In inert atmosphere, insulation 0.5h finishes sintering under 2000 ℃ of temperature, and temperature rise rate is 5 ℃/min.
Fig. 2 is the stereoscan photograph (c) of hole wall and the graph of pore diameter distribution (d) behind the sintering behind (b) optical microscope photograph and the sintering behind (a) and the sintering before the macropore silicon carbide ceramic body sintering that makes of present embodiment.The aperture of present embodiment gained macropore silicon carbide ceramic body is 0.6 ± 0.2mm, and mean pore size is 0.6mm, be approximately before this patent report (patent No.: the 201010580712.7) twice in aperture links to each other by communicating aperture between the macropore.Stereoscan photograph behind the sintering shows that the SiC particle interconnects by sintering.
Embodiment 2
(1) SiC powder and boron carbide powder are mixed composition SiC compound, wherein the mean particle size of SiC powder is 1.0 μ m, and the mean particle size of boron carbide powder is 4.1 μ m; Contain by weight percentage SiC powder 98.92% in the SiC compound, contain boron carbide powder 1.08%;
(2) adopt concentration be the polyvinyl alcohol water solution 20-99 of 6.75wt% as binding agent, SiC compound and binding agent polyvinyl alcohol water solution by weight for 14.19:44 mixes, are formed uniform sizing material, mechanical stirring slurry, introducing bubble; The uniform sizing material that will draw behind the bubble is put into airtight container, carries out controlled decompression art breading, makes slurry evenly be expanded to three times of original volume;
(3) slurry after expanding in company with container behind freezing 9h under-17 ℃ of temperature, sample after freezing directly is transferred in the industrial alcohol extraction 5 hours, repeat 1～3 time, then immerse massfraction and be 7% resol ethanolic soln, sample is dry 4h under 80 ℃ of temperature; In inert atmosphere, insulation 0.5h finishes sintering under 2000 ℃ of temperature, and temperature rise rate is 5 ℃/min.
Fig. 3 is optical microscope photograph and the graph of pore diameter distribution behind the sintering (c) of (b) behind (a) and the sintering before the macropore silicon carbide ceramics sintering that makes of present embodiment.Present embodiment is compared with embodiment 1, does not change other conditions and increases the mass ratio of SiC composite granule and PVA solution, can obviously increase the size of macropore, the large about 1.2 ± 0.4mm of hole dimension, the about 1.0mm of mean pore size.Link to each other by communicating aperture between the macropore, the about 0.05 ~ 0.2mm in aperture, hole wall thickens phenomenon simultaneously.Clearly, by the present invention, grade can be further brought up in the aperture of three-dimensional interconnected large hole silicon carbide.
Embodiment 3
(1) SiC powder and boron carbide powder are mixed composition SiC compound, wherein the mean particle size of SiC powder is 1.0 μ m, and the mean particle size of boron carbide powder is 4.1 μ m; Contain by weight percentage SiC powder 98.92% in the SiC compound, contain boron carbide powder 1.08%;
(2) adopt concentration be the polyvinyl alcohol water solution 20-99 of 6.75wt% as binding agent, with SiC compound, sodium lauryl sulphate and binding agent polyvinyl alcohol water solution by weight being 14.19:2 * 10
-3: 44 mix, and form uniform sizing material, and the mechanical stirring slurry is introduced bubble; The uniform sizing material that will draw behind the bubble is put into airtight container, carries out controlled decompression art breading, makes slurry evenly be expanded to three times of original volume;
(3) slurry after expanding in company with container behind freezing 9h under-17 ℃ of temperature, sample after freezing directly is transferred in the industrial alcohol extraction 5 hours, repeat 1～3 time, then immerse massfraction and be 7% resol ethanolic soln, sample is dry 4h under 80 ℃ of temperature; In inert atmosphere, insulation 0.5h finishes sintering under 2000 ℃ of temperature, and temperature rise rate is 5 ℃/min.
Fig. 4 is optical microscope photograph (a) and the graph of pore diameter distribution (b) behind the macropore silicon carbide ceramic body sintering that makes of present embodiment.Present embodiment is compared with embodiment 2, does not change other conditions, adds micro-surfactant SDS, and the large about 0.8 ± 0.4mm in hole silicon carbide aperture and homogeneity are improved, and the connectivity between the macropore also is significantly improved, and the linked hole size is at 0.2 ± 0.1mm.This and granted patent (patent No.: the action principle of the tensio-active agent 201010580712.7) (OP-10) is similar.
Embodiment 4
(1) SiC powder and boron carbide powder are mixed composition SiC compound, wherein the mean particle size of SiC powder is 1.0 μ m, and the mean particle size of boron carbide powder is 4.1 μ m; Contain by weight percentage SiC powder 98.92% in the SiC compound, contain boron carbide powder 1.08%;
(2) adopt concentration be the polyvinyl alcohol water solution 20-99 of 6.75wt% as binding agent, SiC compound and binding agent polyvinyl alcohol water solution by weight for 14.19:44 mixes, are formed uniform sizing material, mechanical stirring slurry, introducing bubble; The uniform sizing material that will draw behind the bubble is put into airtight container, carries out controlled decompression art breading, makes slurry evenly be expanded to the twice of original volume;
(3) slurry after expanding in company with container behind freezing 9h under-17 ℃ of temperature, sample after freezing directly is transferred in the industrial alcohol extraction 5 hours, repeat 1～3 time, then immerse massfraction and be 7% resol ethanolic soln, sample is dry 4h under 80 ℃ of temperature; In inert atmosphere, insulation 0.5h finishes sintering under 2000 ℃ of temperature, and temperature rise rate is 5 ℃/min.
Fig. 5 is optical microscope photograph (a) and the graph of pore diameter distribution (b) behind the macropore silicon carbide ceramic body sintering that makes of present embodiment.Present embodiment is compared with embodiment 2, does not change other conditions, reduces the volume that expands, and can reduce the size of macropore, and large hole dimension drops to about 0.4 ± 0.2mm from about 1.2 ± 0.3mm, links to each other the about 0.05 ~ 0.1mm in aperture between the macropore by communicating aperture.
(1) SiC powder and boron carbide powder are mixed composition SiC compound, wherein the mean particle size of SiC powder is 1.0 μ m, and the mean particle size of boron carbide powder is 4.1 μ m; Contain by weight percentage SiC powder 98.92% in the SiC compound, contain boron carbide powder 1.08%;
(2) adopt concentration be the polyvinyl alcohol water solution 20-99 of 6.75wt% as binding agent, SiC compound and binding agent polyvinyl alcohol water solution by weight for 14.19:44 mixes, are formed uniform sizing material, mechanical stirring slurry, introducing bubble; The uniform sizing material that will draw behind the bubble is put into airtight container, carries out controlled decompression art breading, makes slurry evenly be expanded to four times of original volume;
(3) slurry after expanding in company with container behind freezing 9h under-17 ℃ of temperature, sample after freezing directly is transferred in the industrial alcohol extraction 5 hours, repeat 1～3 time, then immerse massfraction and be 7% resol ethanolic soln, sample is dry 4h under 80 ℃ of temperature; In inert atmosphere, insulation 0.5h finishes sintering under 2000 ℃ of temperature, and temperature rise rate is 5 ℃/min.
Fig. 6 is optical microscope photograph (a) and the graph of pore diameter distribution (b) behind the macropore silicon carbide ceramic body sintering that makes of present embodiment.Present embodiment is compared with embodiment 4, does not change other conditions, increases the volume that expands, and can increase the size of macropore, and large hole dimension is increased to about 0.8 ± 0.3mm from about 0.4 ± 0.2mm, links to each other the about 0.05 ~ 0.3mm in aperture between the macropore by communicating aperture.
Embodiment 6
(1) SiC powder and boron carbide powder are mixed composition SiC compound, wherein the mean particle size of SiC powder is 1.0 μ m, and the mean particle size of boron carbide powder is 4.1 μ m; Contain by weight percentage SiC powder 98.92% in the SiC compound, contain boron carbide powder 1.08%;
(2) adopt concentration be the polyvinyl alcohol water solution 17-99 of 8.0wt% as binding agent, with SiC compound, sodium lauryl sulphate and binding agent polyvinyl alcohol water solution by weight being 17:3 * 10
-3: 44 mix, and form uniform sizing material, and hand vibration slurry is introduced bubble; The uniform sizing material that will draw behind the bubble is put into airtight container, carries out controlled decompression art breading, makes slurry evenly be expanded to three times of original volume;
(3) slurry after expanding in company with container behind freezing 4h under-17 ℃ of temperature, sample after freezing is put to room temperature, be transferred in the dehydrated alcohol and extract 4 hours, repeat 1～3 time, then immerse massfraction and be 7% resol ethanolic soln, sample is dry 4h under 50 ℃ of temperature; In inert atmosphere, insulation 2h finishes sintering under 1950 ℃ of temperature, and temperature rise rate is 5 ℃/min.
Embodiment 7
(1) SiC powder and boron carbide powder are mixed composition SiC compound, wherein the mean particle size of SiC powder is 1.0 μ m, and the mean particle size of boron carbide powder is 4.1 μ m; Contain by weight percentage SiC powder 98.92% in the SiC compound, contain boron carbide powder 1.08%;
(2) adopt concentration be the polyvinyl alcohol water solution 20-99 of 7.0wt% as binding agent, SiC compound and binding agent polyvinyl alcohol water solution by weight for 7:44 mixes, are formed uniform sizing material, mechanical stirring slurry, introducing bubble; The uniform sizing material that will draw behind the bubble is put into airtight container, carries out controlled decompression art breading, makes slurry evenly be expanded to four times of original volume;
(3) slurry after expanding in company with container behind freezing 12h under-17 ℃ of temperature, sample after freezing is put to room temperature, be transferred in the dehydrated alcohol and extract 12 hours, repeat 1～3 time, then immerse massfraction and be 7% resol ethanolic soln, sample is dry 4h under 120 ℃ of temperature; In inert atmosphere, insulation 0.5h finishes sintering under 2100 ℃ of temperature, and temperature rise rate is 5 ℃/min.
Embodiment 8
(1) SiC powder and boron carbide powder are mixed composition SiC compound, wherein the mean particle size of SiC powder is 1.0 μ m, and the mean particle size of boron carbide powder is 4.1 μ m; Contain by weight percentage SiC powder 98.92% in the SiC compound, contain boron carbide powder 1.08%;
(2) adopt concentration be the polyvinyl alcohol water solution 20-99 of 6.5wt% as binding agent, SiC compound and binding agent polyvinyl alcohol water solution by weight for 10:44 mixes, are formed uniform sizing material, hand vibration slurry, introducing bubble; The uniform sizing material that will draw behind the bubble is put into airtight container, carries out controlled decompression art breading, makes slurry evenly be expanded to four times of original volume;
(3) slurry after expanding in company with container behind freezing 12h under-17 ℃ of temperature, sample after freezing is put to room temperature, be transferred in the dehydrated alcohol and extract 24 hours, repeat 1～3 time, then immerse massfraction and be 7% resol ethanolic soln, sample is dry 4h under 120 ℃ of temperature; In inert atmosphere, insulation 0.5h finishes sintering under 2100 ℃ of temperature, and temperature rise rate is 5 ℃/min.
Embodiment 9
(1) SiC powder and boron carbide powder are mixed composition SiC compound, wherein the mean particle size of SiC powder is 1.0 μ m, and the mean particle size of boron carbide powder is 4.1 μ m; Contain by weight percentage SiC powder 98.92% in the SiC compound, contain boron carbide powder 1.08%;
(2) adopt concentration be the polyvinyl alcohol water solution 17-99 of 7.0wt% as binding agent, SiC compound and binding agent polyvinyl alcohol water solution by weight for 7:44 mixes, are formed uniform sizing material, mechanical stirring slurry, introducing bubble; The uniform sizing material that will draw behind the bubble is put into airtight container, carries out controlled decompression art breading, makes slurry evenly be expanded to two times of original volume;
(3) slurry after expanding in company with container behind freezing 12h under-17 ℃ of temperature, sample after freezing is put to room temperature, be transferred in the dehydrated alcohol and extract 5 hours, repeat 1～3 time, then immerse massfraction and be 7% resol ethanolic soln, sample is dry 4h under 120 ℃ of temperature; In inert atmosphere, insulation 0.5h finishes sintering under 2100 ℃ of temperature, and temperature rise rate is 5 ℃/min.
Claims (7)
1. the preparation method of the interconnected SiC pottery of macropore is characterized in that may further comprise the steps:
(1) SiC powder and boron carbide powder are mixed composition SiC compound, contain by weight percentage SiC powder 98.92% in the SiC compound, contain boron carbide powder 1.08%;
(2) be (7 ~ 17) by weight with SiC compound, cats product and binding agent polyvinyl alcohol water solution: (0 ~ 3 * 10
-3): 44 mix, and form uniform sizing material, and hand vibration or mechanical stirring slurry are introduced bubble; The uniform sizing material that will draw behind the bubble is put into airtight container, carries out controlled decompression art breading;
(3) after slurry expand into 2 ~ 4 times of original volume, in company with container behind freezing 4 ~ 12h under-17 ℃ of temperature, in dehydrated alcohol or industrial alcohol, extract 4 ~ 24h under room temperature or-17 ℃ of freezing conditions, repeat 1～3 time, then immerse massfraction and be 7% resol ethanolic soln, sample is dry 4h under 50 ~ 120 ℃ of temperature, in inert atmosphere, is incubated 0.5 ~ 2h and finishes sintering under 1950 ~ 2100 ℃ of temperature.
2. the preparation method of the interconnected SiC pottery of a kind of macropore according to claim 1, the mean particle size that it is characterized in that the SiC powder described in the step (1) is 1.0 μ m, the mean particle size of boron carbide powder is 4.1 μ m.
3. the preparation method of the interconnected SiC pottery of a kind of macropore according to claim 1, it is characterized in that the binding agent polyvinyl alcohol water solution described in the step (2) is that the polymerization degree of polyvinyl alcohol is 2000, alcoholysis degree is 99%, strength of solution is that the polymerization degree of 6.5～7.0wt% or polyvinyl alcohol is 1700, alcoholysis degree is 99%, and strength of solution is 7.0～8.0wt%.
4. the preparation method of the interconnected SiC pottery of a kind of macropore according to claim 1 is characterized in that the cats product described in the step (2) is sodium lauryl sulphate.
5. the preparation method of the interconnected SiC pottery of a kind of macropore according to claim 1 is characterized in that the bubble that draws described in the step (2) is by hand vibration or mechanical stirring mode introducing air bubble.
6. the preparation method of the interconnected SiC pottery of a kind of macropore according to claim 1 is characterized in that the decompression technique described in the step (2) is that the uniform sizing material that will draw behind the bubble expands through decompression, thereby increases the size of bubble in encloses container.
7. the preparation method of the interconnected SiC pottery of a kind of macropore according to claim 1 is characterized in that the resol described in the step (3) is the Resole type, and molecular weight is 600, mainly is be used to drawing carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210556026.5A CN102976758B (en) | 2012-12-20 | 2012-12-20 | Preparation method of macroporous interconnection SiC ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210556026.5A CN102976758B (en) | 2012-12-20 | 2012-12-20 | Preparation method of macroporous interconnection SiC ceramics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102976758A true CN102976758A (en) | 2013-03-20 |
| CN102976758B CN102976758B (en) | 2015-02-25 |
Family
ID=47851167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210556026.5A Expired - Fee Related CN102976758B (en) | 2012-12-20 | 2012-12-20 | Preparation method of macroporous interconnection SiC ceramics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102976758B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103304251A (en) * | 2013-05-17 | 2013-09-18 | 西安交通大学 | Preparation method of pure alpha-SiC material with through-hole structure |
| CN103396123A (en) * | 2013-07-30 | 2013-11-20 | 东北大学 | Method for preparing large-aperture three-dimensional network SiC ceramic material |
| CN107188610A (en) * | 2017-06-01 | 2017-09-22 | 洛阳师范学院 | A kind of preparation method of porous silicon carbide ceramic |
| CN107365887A (en) * | 2017-06-07 | 2017-11-21 | 常州豫春化工有限公司 | A kind of preparation method of fluxing type slagging agent |
| CN109180195A (en) * | 2018-09-30 | 2019-01-11 | 威海威林特电控科技有限公司 | One kind is based on adding obdurability porous ceramic composite and its preparation process made of infiltrated metal method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1472118A (en) * | 2003-07-16 | 2004-02-04 | 北京印刷学院 | Expanded pearlite shockproof packing gaskets and manufacture thereof |
| CN102010226A (en) * | 2010-12-09 | 2011-04-13 | 东北大学 | Macroporous SiC ceramic preparation method |
| CN102584329A (en) * | 2012-01-20 | 2012-07-18 | 安徽理工大学 | High-porosity porous ceramic and preparation method thereof |
-
2012
- 2012-12-20 CN CN201210556026.5A patent/CN102976758B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1472118A (en) * | 2003-07-16 | 2004-02-04 | 北京印刷学院 | Expanded pearlite shockproof packing gaskets and manufacture thereof |
| CN102010226A (en) * | 2010-12-09 | 2011-04-13 | 东北大学 | Macroporous SiC ceramic preparation method |
| CN102584329A (en) * | 2012-01-20 | 2012-07-18 | 安徽理工大学 | High-porosity porous ceramic and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103304251A (en) * | 2013-05-17 | 2013-09-18 | 西安交通大学 | Preparation method of pure alpha-SiC material with through-hole structure |
| CN103304251B (en) * | 2013-05-17 | 2014-08-06 | 西安交通大学 | Preparation method of pure alpha-SiC material with through-hole structure |
| CN103396123A (en) * | 2013-07-30 | 2013-11-20 | 东北大学 | Method for preparing large-aperture three-dimensional network SiC ceramic material |
| CN107188610A (en) * | 2017-06-01 | 2017-09-22 | 洛阳师范学院 | A kind of preparation method of porous silicon carbide ceramic |
| CN107365887A (en) * | 2017-06-07 | 2017-11-21 | 常州豫春化工有限公司 | A kind of preparation method of fluxing type slagging agent |
| CN109180195A (en) * | 2018-09-30 | 2019-01-11 | 威海威林特电控科技有限公司 | One kind is based on adding obdurability porous ceramic composite and its preparation process made of infiltrated metal method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102976758B (en) | 2015-02-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Chen et al. | Porous ceramics: Light in weight but heavy in energy and environment technologies | |
| Yuan et al. | Preparation and properties of mullite-bonded porous fibrous mullite ceramics by an epoxy resin gel-casting process | |
| Mao et al. | Porous ceramics with tri-modal pores prepared by foaming and starch consolidation | |
| Tallon et al. | Recent trends in shape forming from colloidal processing: A review | |
| Wu et al. | Novel porous Si3N4 ceramics prepared by aqueous gelcasting using Si3N4 poly-hollow microspheres as pore-forming agent | |
| Mao et al. | Gelcasting of alumina foams consolidated by epoxy resin | |
| US20180186698A1 (en) | Porous alumina ceramic ware and preparation method thereof | |
| CN103739306B (en) | Preparation method of directional porous special cement | |
| CN101503298B (en) | Method for preparing silicon nitride porous ceramic by gel injection moulding | |
| CN102976758B (en) | Preparation method of macroporous interconnection SiC ceramics | |
| Yu et al. | Study on particle-stabilized Si3N4 ceramic foams | |
| CN102757224A (en) | Method for preparing dense boron carbide matrix ceramic material by sintering | |
| Akpinar et al. | Silicon carbide particle reinforced mullite composite foams | |
| CN109437959B (en) | Method for preparing mullite fiber-based porous ceramic by using environment-friendly gel casting | |
| Yang et al. | Macroporous silicate ceramics prepared by freeze casting combined with polymer sponge method | |
| CN110294636B (en) | Light heat-insulating nickel metallurgy waste residue foamed ceramic and preparation method thereof | |
| Zhang et al. | Pore morphology designs of porous Si3N4-based ceramics using Si3N4 and Al2O3 poly-hollow microspheres as pore-forming agents | |
| CN104446623A (en) | Mullite porous ceramic and preparation method thereof | |
| CN105294111A (en) | Gelcasting forming method of Si3N4 porous ceramic | |
| CN105315006A (en) | Method for preparing gradient porous silicon nitride ceramic | |
| CN110668802A (en) | Green preparation method of light high-strength cordierite porous ceramic and filter | |
| Shao et al. | Novel method for fabrication of silicon nitride/silicon oxynitride composite ceramic foams using fly ash cenosphere as a pore‐forming agent | |
| CN101844934A (en) | Preparation method of porous Al2O3 ceramic | |
| Fei et al. | Study on the sintering mechanism and properties of porous ceramics prepared by silicon carbide abrasive particles with multi-mineral sintering additives and silica sols | |
| CN102010226B (en) | Macroporous SiC ceramic preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20151220 |
|
| EXPY | Termination of patent right or utility model |