CN1629100A - Method for producing large-aperture porous ceramic element - Google Patents
Method for producing large-aperture porous ceramic element Download PDFInfo
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- CN1629100A CN1629100A CN 200310114506 CN200310114506A CN1629100A CN 1629100 A CN1629100 A CN 1629100A CN 200310114506 CN200310114506 CN 200310114506 CN 200310114506 A CN200310114506 A CN 200310114506A CN 1629100 A CN1629100 A CN 1629100A
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Abstract
The invention relates to a method for producing large-aperture porous ceramic element which comprises, preparing high temperature bonding agent paste by means of gel die casting technology, wherein the raw material comprises high temperature bonding agent 0-50 wt%, organic solvent 10-100 wt%, aperture increasing agent 0-20 wt%, dispersing agent 0-15 wt%, pH adjusting agent 0-5 wt%, mixing aggregate with the high temperature bonding agent paste, grinding and mixing to obtain uniform porous ceramic paper stock, then charging 0.1-3 wt% initiating agent, mixing uniformly, injecting into die, coagulating the paper stock for moulding, demoulding and drying, sintering the dried blank at 1000-1650 deg. C to obtain the large aperture porous ceramic element.
Description
Technical field
The present invention relates to the preparation method of a kind of wide aperture porous ceramic element, belong to porous ceramics fabricating technology field.
Background technology
The preparation of wide aperture (100～2000 μ m) ceramic component comprises preparation, the moulding of aggregate selection, high temperature adhesives, high temperature adhesives slurry and burns till.The preparation of wide aperture porous ceramics need be adopted the bigger aggregate of particle diameter, because aggregate is thicker, during forming methods such as employing slip casting, cured perfusion, compacting, slurry precipitates easily, blank strength is low excessively, brings difficulty to moulding.Adopt dry-press process, aggregate and high-temperature agglomerant mix inhomogeneous, cause in the goods internal pore structure aperture and pore size distribution inhomogeneous easily, influence the performance of goods.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can overcome above-mentioned defective, easy to operate, with short production cycle, the work workload is little, production efficiency height, green strength height, the rate that manufactures a finished product height, and the preparation method of superior in quality wide aperture porous ceramic element.
Its technical scheme is:
Comprise the preparation of high temperature adhesives mixed slurry, the moulding of ceramic component and burning till, it is characterized in that: at first adopt gel casting process to prepare the high temperature adhesives slurry, the weight proportion of its raw material is high temperature bond agent content 0～50wt%, organic solution 10～100wt%, pore forming agent 0～20wt%, dispersion agent 0～15wt%, pH value is adjusted agent 0～5wt%, to select granularity then be the aggregate of 300 μ m～10mm and above-mentioned high temperature adhesives slurry is prepared into uniform porous ceramics slurry with the ratio ground and mixed of 60～90wt%: 10～40wt%, the initiator that adds 0.1～3wt% again mixes, inject mould, slurry coagulation forming in temperature is 50～90 ° scope, demoulding drying, dried base substrate are fired into the wide aperture porous ceramic element in 1000～1650 ℃ temperature range.
For achieving the above object, the preparation method of described wide aperture porous ceramic element, aggregate is one or more of the emergy, silicon carbide, bauxitic clay and the ceramic particle that comprise white fused alumina and brown corundum.
For achieving the above object, the preparation method of described wide aperture porous ceramic element respectively forms the weight percent talcum 0～50wt% that makes a living in the high temperature adhesives, mould county soil 0～50wt%, give birth to Stalactitum 10～30wt%, feldspar 0～40wt%, barium carbonate 0～20wt%.For achieving the above object, the preparation method of described wide aperture porous ceramic element, respectively forming weight percent in the organic solution is organism 1～90wt%, water 10～99wt%, form homogeneous solution, again its pH value is adjusted to 9～10, wherein organism is acrylamide and N, and N-methylene radical acrylamide precentagewise is 1: 1～99 mixed.
For achieving the above object, the preparation method of described wide aperture porous ceramic element, respectively forming weight percent in the pore forming agent is wood charcoal powder 50～60wt%, Mierocrystalline cellulose 10～30wt%, starch 20～30wt%.
For achieving the above object, the preparation method of described wide aperture porous ceramic element, dispersion agent adopts the polyacrylic acid ammonium solution, and concentration is 1～99wt%; PH value is adjusted agent and is adopted 40～60wt% ammoniacal liquor; It is the ammonium persulfate solution of 1～5wt% that initiator adopts concentration.
For achieving the above object, the preparation method of described wide aperture porous ceramic element, mould adopts non-water-absorbent mould, reaches at water-absorbent moulding stock surface-coated waterproof layer sectional die as metal die, glass mold, mould of plastics.
For achieving the above object, the preparation method of described wide aperture porous ceramic element, the preferred various ingredients by weight composed as follows of various batchings preferably composed as follows:
The high temperature adhesives slurry: high temperature adhesives 4.9～48wt%, organic solution 30～90wt%, pore forming agent 5～20wt%, dispersion agent 1～10wt%, pH value is adjusted agent 0.1～2wt%;
Wherein respectively forming preferred weight percent in the high temperature adhesives is: give birth to talcum 10～30wt%, mould county soil 20～45wt%, give birth to Stalactitum 10～15wt%, feldspar 25～30wt%, barium carbonate 5～10wt%;
Respectively forming preferred weight percent in the organic solution is: first N, N-methylene radical acrylamide 1% mix with acrylamide 1～99% and form organism, and organism dissolves in the distilled water with 1: 1～99 ratio, form homogeneous solution;
Respectively forming preferred weight percent in the pore forming agent is: wood charcoal powder 50～60wt%, Mierocrystalline cellulose 10～30wt%, starch 20～30wt%;
Dispersion agent: adopt the polyacrylic acid ammonium solution, concentration is 40～60wt%;
PH value is adjusted agent: adopt 40～60wt% ammoniacal liquor;
Initiator: adopting concentration is the ammonium persulfate solution of 1～5wt%;
Granularity is that aggregate 65～85wt% and the high temperature adhesives slurry 15～35wt% ground and mixed of 100 μ m～10mm is prepared into uniform porous ceramics slurry.
Its making processes is: earlier high temperature adhesives, organic solution, pore forming agent, dispersion agent, pH value are adjusted the agent ball milling and be mixed and made into the high temperature adhesives slurry, add aggregate then, make aggregate and high temperature adhesives thorough mixing wetting, be prepared into uniform porous ceramics slurry, add again after initiator mixes, inject mould, slurry coagulation forming in temperature is 50～90 ° scope, demoulding drying, dried base substrate are fired into the wide aperture porous ceramic element in 1000～1650 ℃ temperature range.
The present invention compared with prior art, adopt gel-casting technology, can be useful for preparation as the wide aperture of materials such as aluminum oxide, silicon carbide, mullite, quartz, bauxitic clay and the ceramic particle (porous ceramic element of 100 μ m～2000mm), characteristics are to simplify, made things convenient for wide aperture (the 100 μ m～2000mm) preparation of porous ceramic element, easy to operate, with short production cycle, the work workload is little, the production efficiency height, the green strength height, the rate that manufactures a finished product height, product performance are superior, the special big production of suitability for industrialized.The product strength height of making, the heat resistanceheat resistant performance of shaking is good, and air permeability and pore structure are good, are applicable to the filtration of high temperature gas distribution, liquid filtering and high-temperature flue gas filtration etc.
Embodiment
Embodiment 1
The aluminum oxide aggregate that with the granularity is 2mm is an example, batching form and technology as follows:
Batching:
Respectively form weight percent in the high temperature adhesives: give birth to talcum 25wt%, mould county soil 35wt%, give birth to Stalactitum 12wt%, feldspar 20wt%, barium carbonate 8wt%.
Respectively form weight percent in the pore forming agent: wood charcoal powder 60wt%, Mierocrystalline cellulose 20wt%, starch 20wt%;
Dispersion agent: adopt the polyacrylic acid ammonium solution, concentration is 50wt%;
PH value is adjusted agent: adopt 40wt% ammoniacal liquor;
Respectively form weight percent: N in the organic solution, N-methylene radical acrylamide and acrylamide are pressed 1: 1～99 mixed, and dissolve in the distilled water with 1: 15 ratio, form homogeneous solution;
The high temperature adhesives slurry: high temperature adhesives 30wt%, organic solution 50wt%, pore forming agent 10wt%, dispersion agent 9wt%, pH value is adjusted agent 1wt%;
Porous ceramics slurry: aluminum oxide aggregate 60wt%, high temperature adhesives slurry 40wt%;
Initiator: adopting concentration is the ammonium persulfate solution of 5wt%.
Preparation:
The preparation of high temperature adhesives slurry is that above-mentioned high temperature adhesives, organic solution, pore forming agent, dispersion agent and pH value are adjusted agent according to the ratio batching that the high temperature adhesives slurry requires, and adds the ballstone ball milling then, and the time is 30 hours.
During moulding with aggregate and high temperature adhesives slurry by the mixed of above-mentioned porous ceramics slurry evenly after, add then fully to stir behind the initiator of 1wt% and form uniform sizing material, inject mould and be under 90 ℃ the condition in temperature, be heating and curing 1 hour, the demoulding then, base substrate after will drying at last burns till in 1300 ℃ temperature range, makes wide aperture of the present invention porous ceramic element.
The purity of testing used proportion material is technical pure.
Through check, the technical indicator of the product that makes is:
Average intensity: 20Mpa., average void content: 43%, the aperture is respectively: 300 μ m.
Embodiment 2
The bauxitic clay aggregate that with the granularity is 10mm is an example, batching form and technology as follows:
Batching:
Respectively form weight percent in the high temperature adhesives: give birth to talcum 25wt%, mould county soil 35wt%, give birth to Stalactitum 12wt%, feldspar 20wt%, barium carbonate 8wt%.
Respectively form weight percent in the pore forming agent: wood charcoal powder 60wt%, Mierocrystalline cellulose 20wt%, starch 20wt%;
Dispersion agent: adopt the polyacrylic acid ammonium solution, concentration is 50wt%;
PH value is adjusted agent: adopt 40wt% ammoniacal liquor;
Organic solution: N, N-methylene radical acrylamide: the mixed of acrylamide=1: 1～99, and dissolve in the distilled water with 1: 15 ratio, form homogeneous solution;
The high temperature adhesives slurry: high temperature adhesives 20wt%, organic solution 60wt%, pore forming agent 10wt%, dispersion agent 9wt%, pH value is adjusted agent 1wt%;
Porous ceramics slurry: aggregate 70wt%, high temperature adhesives slurry 30wt%;
Initiator: adopting concentration is the ammonium persulfate solution of 5wt%.
Preparation:
The preparation of high temperature adhesives slurry is that above-mentioned high temperature adhesives, organic solution, pore forming agent, dispersion agent and pH value are adjusted agent according to the ratio batching that the high temperature adhesives slurry requires, and adds the ballstone ball milling then, and the time is 30 hours.
During moulding with aggregate and high temperature adhesives slurry by the mixed of above-mentioned porous ceramics prescription evenly after, add then fully to stir behind the initiator of 2wt% and form uniform sizing material, inject mould and be under 90 ℃ the condition in temperature, be heating and curing 1 hour, the demoulding then, base substrate after will drying at last burns till in 1300 ℃ temperature range, makes wide aperture of the present invention porous ceramic element.
The purity of testing used proportion material is technical pure.
Through check, the technical indicator of the product that makes is:
Average intensity: 20Mpa., average void content: 39%, the aperture is respectively: 2000 μ m.
Example 3
With granularity is that the carborundum aggregate of 300 μ m is an example, batching form and technology as follows:
Batching:
Respectively form weight percent in the high temperature adhesives: give birth to talcum 25wt%, mould county soil 35wt%, give birth to Stalactitum 12wt%, feldspar 20wt%, barium carbonate 8wt%.
Respectively form weight percent in the pore forming agent: wood charcoal powder 60wt%, Mierocrystalline cellulose 20wt%, starch 20wt%;
Dispersion agent: adopt the polyacrylic acid ammonium solution, concentration is 50wt%;
PH value is adjusted agent: adopt 40wt% ammoniacal liquor;
Organic solution: N, N-methylene radical acrylamide: the mixed of acrylamide=1: 1～99, and dissolve in the distilled water with 1: 20 ratio, form homogeneous solution;
The high temperature adhesives slurry: high temperature adhesives 20wt%, organic solution 60wt%, pore forming agent 10wt%, dispersion agent 9wt%, pH value is adjusted agent 1wt%;
Porous ceramics slurry: aggregate 70wt%, high temperature adhesives slurry 30wt%;
Initiator: adopting concentration is the ammonium persulfate solution of 5wt%.
Preparation:
The preparation of high temperature adhesives slurry is that above-mentioned high temperature adhesives, organic solution, pore forming agent, dispersion agent and pH value are adjusted agent according to the ratio batching that the high temperature adhesives slurry requires, and adds the ballstone ball milling then, and the time is 30 hours.
During moulding with aggregate and high temperature adhesives slurry by the mixed of above-mentioned porous ceramics prescription evenly after, add then fully to stir behind the initiator of 1wt% and form uniform sizing material, inject mould and be under 90 ℃ the condition in temperature, be heating and curing 1 hour, the demoulding then, base substrate after will drying at last burns till in 1200 ℃ temperature range, makes wide aperture of the present invention porous ceramic element.
The purity of testing used proportion material is technical pure.
Through check, the technical indicator of the product that makes is:
Average intensity: 16Mpa., average void content: 40%, the aperture is respectively: 100 μ m.
Claims (10)
1, the preparation method of a kind of wide aperture porous ceramic element, comprise the preparation of high temperature adhesives mixed slurry, the moulding of ceramic component and burning till, it is characterized in that: at first adopt gel casting process to prepare the high temperature adhesives slurry, the weight proportion of its raw material is high temperature bond agent content 0～50wt%, organic solution 10～100wt%, pore forming agent 0～20wt%, dispersion agent 0～15wt%, pH value is adjusted agent 0～5wt%, to select granularity then be the aggregate of 300 μ m～10mm and above-mentioned high temperature adhesives slurry is prepared into uniform porous ceramics slurry with the ratio ground and mixed of 60～90wt%: 10～40wt%, the initiator that adds 0.1～3wt% again mixes, inject mould, slurry coagulation forming in temperature is 50～90 ° scope, demoulding drying, dried base substrate are fired into the wide aperture porous ceramic element in 1000～1650 ℃ temperature range.
2, the preparation method of wide aperture as claimed in claim 1 porous ceramic element is characterized in that: aggregate is one or more of the emergy, silicon carbide, bauxitic clay and the ceramic particle that comprise white fused alumina and brown corundum.
3, the preparation method of wide aperture as claimed in claim 1 porous ceramic element, it is characterized in that: respectively form the weight percent talcum 0～50wt% that makes a living in the high temperature adhesives, mould county soil 0～50wt%, give birth to Stalactitum 10～30wt%, feldspar 0～40wt%, barium carbonate 0～20wt%.
4, the preparation method of wide aperture as claimed in claim 1 porous ceramic element, it is characterized in that: respectively forming weight percent in the organic solution is organism 1～90wt%, water 10～99wt% forms homogeneous solution, again its pH value is adjusted to 9～10.
5, the preparation method of wide aperture as claimed in claim 4 porous ceramic element, it is characterized in that: respectively forming weight percent in the organism is N, N-methylene radical acrylamide 1wt%, acrylamide 1～99wt%.
6, the preparation method of wide aperture as claimed in claim 1 porous ceramic element, it is characterized in that: respectively forming weight percent in the pore forming agent is wood charcoal powder 50～60wt%, Mierocrystalline cellulose 10～30wt%, starch 20～30wt%.
7, the preparation method of wide aperture as claimed in claim 6 porous ceramic element is characterized in that: dispersion agent adopts the polyacrylic acid ammonium solution, and concentration is 1～99wt%, and pH value is adjusted agent and adopted 40～60wt% ammoniacal liquor; It is the ammonium persulfate solution of 1～5wt% that initiator adopts concentration.
8, the preparation method of wide aperture as claimed in claim 1 porous ceramic element, it is characterized in that: mould adopts non-water-absorbent mould.
9, the preparation method of wide aperture as claimed in claim 8 porous ceramic element is characterized in that: non-water-absorbent mould is metal die, glass mold, mould of plastics and at water-absorbent moulding stock surface-coated waterproof layer sectional die.
10, the preparation method of wide aperture as claimed in claim 1 porous ceramic element is characterized in that the preferably composed as follows of various ingredients by weight:
The high temperature adhesives slurry: high temperature adhesives 4.9～48wt%, organic solution 30～90wt%, pore forming agent 5～20wt%, dispersion agent 1～10wt%, pH value is adjusted agent 0.1～2wt%;
Wherein respectively forming preferred weight percent in the high temperature adhesives is: give birth to talcum 10～30wt%, mould county soil 45～20wt%, give birth to Stalactitum 10～15wt%, feldspar 25～30wt%, barium carbonate 5～10wt%;
Respectively forming preferred weight percent in the organic solution is: first N, N-methylene radical acrylamide 1% mix with acrylamide 1～99% and form organism, and organism dissolves in the distilled water with 1: 1～99 ratio, form homogeneous solution;
Respectively forming preferred weight percent in the pore forming agent is: wood charcoal powder 50～60wt%, Mierocrystalline cellulose 10～30wt%, starch 20～30wt%;
Dispersion agent: adopt the polyacrylic acid ammonium solution, concentration is 40～60wt%;
PH value is adjusted agent: adopt 40～60wt% ammoniacal liquor;
Initiator: adopting concentration is the ammonium persulfate solution of 1～5wt%;
Granularity is that aggregate 65～85wt% and the high temperature adhesives slurry 15～35wt% ground and mixed of 100 μ m～10mm is prepared into uniform porous ceramics slurry.
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| CN 200310114506 CN1285546C (en) | 2003-12-18 | 2003-12-18 | Method for producing large-aperture porous ceramic element |
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| CN 200310114506 CN1285546C (en) | 2003-12-18 | 2003-12-18 | Method for producing large-aperture porous ceramic element |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101323527B (en) * | 2007-06-13 | 2011-03-02 | 山东理工大学 | Preparation of ceramic thermal protection tube |
| CN101591175B (en) * | 2008-05-30 | 2011-12-28 | 山东理工大学 | Preparation method for oxide porous ceramic |
| CN102627448A (en) * | 2012-03-31 | 2012-08-08 | 江苏大学 | Method for preparing ceramic fibers |
| CN104002367A (en) * | 2014-05-30 | 2014-08-27 | 成都易态科技有限公司 | Isostatic pressing forming mould and method for preparing filter plate made from sintered porous material |
| US20220024823A1 (en) * | 2018-11-21 | 2022-01-27 | Imertech Sas | Ceramic paste compositions for 3d printing |
| CN114315313A (en) * | 2021-12-31 | 2022-04-12 | 湖南英捷高科技有限责任公司 | Injection molding method of steatite porcelain |
-
2003
- 2003-12-18 CN CN 200310114506 patent/CN1285546C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101323527B (en) * | 2007-06-13 | 2011-03-02 | 山东理工大学 | Preparation of ceramic thermal protection tube |
| CN101591175B (en) * | 2008-05-30 | 2011-12-28 | 山东理工大学 | Preparation method for oxide porous ceramic |
| CN102627448A (en) * | 2012-03-31 | 2012-08-08 | 江苏大学 | Method for preparing ceramic fibers |
| CN104002367A (en) * | 2014-05-30 | 2014-08-27 | 成都易态科技有限公司 | Isostatic pressing forming mould and method for preparing filter plate made from sintered porous material |
| CN104002367B (en) * | 2014-05-30 | 2016-05-18 | 成都易态科技有限公司 | Prepare isostatic pressing mold and the method for sintered porous material filter |
| US20220024823A1 (en) * | 2018-11-21 | 2022-01-27 | Imertech Sas | Ceramic paste compositions for 3d printing |
| CN114315313A (en) * | 2021-12-31 | 2022-04-12 | 湖南英捷高科技有限责任公司 | Injection molding method of steatite porcelain |
| CN114315313B (en) * | 2021-12-31 | 2023-08-22 | 湖南英捷高科技有限责任公司 | Injection molding method of talcum porcelain |
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| Publication number | Publication date |
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| CN1285546C (en) | 2006-11-22 |
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