CN104016708B - A kind of preparation method of high breaking strength earthenware supporter - Google Patents
A kind of preparation method of high breaking strength earthenware supporter Download PDFInfo
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- CN104016708B CN104016708B CN201410234751.XA CN201410234751A CN104016708B CN 104016708 B CN104016708 B CN 104016708B CN 201410234751 A CN201410234751 A CN 201410234751A CN 104016708 B CN104016708 B CN 104016708B
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Abstract
The invention discloses a kind of preparation method of high breaking strength earthenware supporter, specifically implement according to following steps: step 1, take raw material and mix, take aggregate, pore former and sintering aid according to formula, and mix, obtain powder; Step 2, prepares pug; Step 3, ageing, carries out ageing by the pug obtained in step 2; Step 4, shaping, the pug after ageing in step 3 is made the biscuit of definite shape; Step 5, sintering, puts into agglomerating plant by the biscuit made in step 4 and sinters, obtain high breaking strength earthenware supporter.The preparation method of a kind of high breaking strength earthenware supporter of the present invention, reduces the sintering temperature of supporter, and improves its rupture strength by adding sintering aid.
Description
Technical field
The invention belongs to porous material preparing technical field, be specifically related to a kind of preparation method of high breaking strength earthenware supporter.
Background technology
Although existing inorganic thin film preparation method is comparatively various, kind is also abundanter, and itself fragility is comparatively large, is difficult to bear separately applying pressure thereon in application process, must depend on certain carrier and can realize its application.Ceramic supporting body grows up under this environmental condition, due in application process, the pressure that the requirement of the process water yield applies thereon is general all larger, tens MPas can be reached, therefore require that ceramic supporting body has higher mechanical strength, for Tubular Ceramic Substrate, it must possess enough rupture strengths.
Current commercial ceramic film support many employings average grain diameter is high-purity Al of 30 ~ 40 μm
2o
3, higher than 1700 DEG C of sintering, to obtain the high strength supporter mutually unified with Thief zone performance.And too high sintering temperature causes the one of the main reasons of current ceramic supporting body high cost.
In existing method, less to the research of the rupture strength improving Tubular Ceramic Substrate, theory is also immature; To the fine and close Al of reduction
2o
3the main method of ceramic sintering temperature is the Al with nanoscale
2o
3for aggregate, interpolation can with Al
2o
3form the material of solid solution (as TiO
2deng) and add can with Al
2o
3form the material (as kaolin and quartz etc.) of liquid phase.Because liquid phase sintering mechanism significantly can reduce Al
2o
3sintering temperature, and liquid content is higher, Al
2o
3the densification rate of sintering is also faster, and this makes the method utilizing additive at high temperature to form liquid phase accelerating oxidation aluminum sinter be paid attention to.
Summary of the invention
The object of this invention is to provide the preparation method of high breaking strength earthenware supporter, reduce the sintering temperature of supporter by adding sintering aid, and improve its rupture strength.
The technical solution adopted in the present invention is, a kind of preparation method of high breaking strength earthenware supporter, specifically implements according to following steps:
Step 1, takes raw material and mixes, and takes aggregate, pore former and sintering aid, and mixes, obtain powder according to formula;
Step 2, prepares pug;
Step 3, ageing, carries out ageing by the pug obtained in step 2;
Step 4, shaping, the pug after ageing in step 3 is made the biscuit of definite shape;
Step 5, sintering, puts into agglomerating plant by the biscuit made in step 4 and sinters, obtain high breaking strength earthenware supporter.
Feature of the present invention is also,
Wherein, step 1 is specifically implemented according to following steps:
Step 1.1, takes raw material according to following formula:
Aggregate 90.5-92%, pore former 3% ~ 4%, all the other are sintering aid, and the content sum of three kinds of components is 100%;
Aggregate is alundum (Al2O3);
Pore former is carboxymethyl cellulose or polyvinyl alcohol;
Sintering aid is the mixture of zinc powder, cupric oxide and titanium oxide, and the ratio of three is 1:1.5 ~ 2:3 ~ 5;
The various raw materials taken in step 1.1 are mixed, obtain powder by step 1.2.
Wherein, the particle diameter of aggregate, pore former and sintering aid is 30 ~ 40 μm.
Wherein, step 2 is specifically implemented according to following steps:
Step 2.1, mixes the powder mixed in step 1 with distilled water, and the mass ratio of powder and distilled water is 20:9 ~ 10;
Step 2.2, the accurate reinforcement electric mixer of the mixture in step 2.1 is stirred 50-70 minute, and the speed of stirring is 1000-1500 rev/min;
Step 2.3, is placed in heat collecting type constant-temperature heating magnetic stirring apparatus by the product of step 2.2 and adds thermal agitation 35-45 minute, makes the moisture content of mixture reach 25 ~ 28%.
Wherein, the concrete grammar of step 3 is: the uniform pug preparation obtained in step 2 is become uniform bulk and is placed in container, with preservative film sealing, and ageing 20 ~ 24 hours.
Wherein, specifically the implementing according to following steps of step 4:
Step 4.1, takes out 25 ~ 26g by the pug after step 3 ageing, is rolled in uniformly by pug on diameter is 6 ~ 8mm, length is 17 ~ 19cm wooden large knitting needle, then by the mode of roll forming, becomes the cylinder pug base of surface uniform;
Step 4.2, the wooden large knitting needle in cylinder pug base step 4.1 obtained is extracted out, makes tubulose pug base;
Step 4.3, is placed in biochemical cultivation case dry 48-50h at 20 ~ 22 DEG C by the tubulose pug base in step 4.2, obtains tubular ceramic biscuit.
Wherein, the concrete steps of step 5 are:
Step 5.1, tubular ceramic biscuit step 4.3 obtained is placed in Muffle furnace and sinters under certain sintering schedule;
Step 5.2, naturally cools to room temperature by the product sintered, and obtains ceramic pipe type supporter.
Wherein, sintering schedule is, be warming up to 1100 ~ 1200 DEG C with the heating rate of 2 ~ 5 DEG C/min, sintering time is 6 ~ 10h.
The invention has the beneficial effects as follows, the present invention is at CuO+TiO
2basis on add Zn, and by the improvement of the steps such as ageing, shaping, sintering, making this method when preparing Tubular Ceramic Substrate, not only reducing the sintering temperature of Tubular Ceramic Substrate, and substantially increase its rupture strength.
Accompanying drawing explanation
Fig. 1 be the preparation method of high breaking strength earthenware supporter of the present invention prepare the scanning electron microscope (SEM) photograph of ceramic support surface;
Fig. 2 be the preparation method of high breaking strength earthenware supporter of the present invention prepare the X-ray diffractogram of ceramic supporting body.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The preparation method of a kind of high breaking strength earthenware of the present invention supporter, specifically implements according to following steps:
Step 1, takes raw material and mixes, and takes aggregate, pore former and sintering aid, and mixes, obtain powder according to formula;
Step 1.1, takes raw material according to following formula:
Aggregate 90.5-92%, pore former 3% ~ 4%, all the other are sintering aid, and the content sum of three kinds of components is 100%;
Aggregate is alundum (Al2O3);
Pore former is carboxymethyl cellulose or polyvinyl alcohol;
Sintering aid is the mixture of zinc powder, cupric oxide and titanium oxide, and the ratio of three is 1:1.5 ~ 2:3 ~ 5.The particle diameter of aggregate, pore former and sintering aid is 30 ~ 40 μm.
The various raw materials taken in step 1.1 are mixed, obtain powder by step 1.2.
Step 2, prepares pug;
Step 2.1, mixes the powder mixed in step 1 with distilled water, and the mass ratio of powder and distilled water is 20:9 ~ 10;
Step 2.2, the accurate reinforcement electric mixer of the mixture in step 2.1 is stirred 50-70 minute, and the speed of stirring is 1000-1500 rev/min
Step 2.3, is placed in heat collecting type constant-temperature heating magnetic stirring apparatus by the product of step 2.2 and adds thermal agitation 35-45 minute, makes the moisture content of mixture reach 25 ~ 28%.
Step 3, ageing, carries out ageing by the pug obtained in step 2;
Concrete grammar is: the uniform pug preparation obtained in step 2 is become uniform bulk and is placed in container, with preservative film sealing, and ageing 20 ~ 24 hours.
Step 4, shaping, the pug after ageing in step 3 is made the biscuit of definite shape;
Step 4.1, takes out 25-26g by the pug after step 3 ageing, is rolled in uniformly by pug on diameter is 6 ~ 8mm, length is 17 ~ 19cm wooden large knitting needle, then by the mode of roll forming, becomes the cylinder pug base of surface uniform;
Step 4.2, the wooden large knitting needle in cylinder pug base step 4.1 obtained is extracted out, makes tubular type pug base;
Step 4.3, is placed in biochemical cultivation case dry 48-50h at 20-22 DEG C by the tubulose pug base in step 4.2, obtains tubular ceramic biscuit.
Step 5, sintering, puts into agglomerating plant by the biscuit made in step 4 and sinters, obtain high breaking strength earthenware supporter.
Step 5.1, tubular ceramic biscuit step 4.3 obtained is placed in Muffle furnace and sinters under certain sintering schedule.
Step 5.2, naturally cools to room temperature by the product sintered, and obtains ceramic pipe type supporter.
Sintering schedule is, be warming up to 1100 ~ 1200 DEG C with the heating rate of 2 ~ 5 DEG C/min, sintering time is 6 ~ 10h.
Fig. 1 adds scanning electron microscope (SEM) photograph and the X-ray diffractogram that CuO+TiO2+Zn content is respectively 1.5g, 3g, 1g, after interpolation TiO2 burns till at 1100 DEG C, make the microstructural surfaces of supporter smooth, this is because generate Al2TiO5, make particle diameter become large, accelerate sintering; Adding CuO, Zn makes sample with liquid phase humidification acceleration of sintering, generates aluminium oxide and closes copper, titanium copper and cupric oxide, so the microstructure of supporter has great convex shape perhaps.
Fig. 2 adds the X-ray diffractogram that CuO+TiO2+Zn content is respectively 1.5g, 3g, 1g supporter.As can be seen from the figure, 1100 DEG C burn till after, through XRD diffraction, the composition of supporter main phase is corundum phase (Al
2o
3), anatase (TitaniumOxide), aluminium oxide close copper (CopperAluminumOxide), Al
2tiO
5, titanium copper (CopperTitanium), cupric oxide (CopperOxide).Burn till corundum phase, Al that rear supports contains stable crystal form
2tiO
5, cupric oxide etc., the mechanical strength of supporter is improved.
Original is added CuO-TiO
2rear mechanical strength is 55.82MPa, and in preparation method of the present invention, adds CuO-TiO
2after-Zn, mechanical strength is 78.76MPa.
The preparation method of the Tubular Ceramic Substrate of a kind of high breaking strength of the present invention, feature and the effect of its each step are:
(1) selection of raw material, the sintering aid that this experiment is selected is CuO-TiO
2-Zn, at use CuO-TiO
2in-Zn composite assistant Low-Temperature Sintered Alumina Ceramics process, because CuO and TiO
2can not react, mainly with the liquid-phase sintering of CuO generation and TiO
2solid-phase sintering completes the densified of aluminium oxide ceramics, and the fusing point of zinc is lower, 419.5 DEG C, also generation liquid phase comparatively early can promote the sintering of supporter.
(2) object of ageing, impel water distribution even, this not only can improve the processability of raw material, and can improve the drying property of raw material, improves manufactured goods quality.Sealing should be made every effort to during ageing, do not open wide.If opening wide to make agglomerate transepidermal water evaporate, cause inside and outside moisture uneven.
(3) biscuit after shaping is put in biochemical cultivation case, dry 48-50h; Determine that rational drying system contributes to shortening the production cycle, such as dry etc. under certain temperature and humidity, such drying system contributes to further sintering.
(4) enough mechanical strengths to be had through oversintering to make base substrate after blank forming, at high temperature, in base substrate, powder particles release surface can form crystal boundary, due to effect of mass transmitting such as diffusion, evaporation, cohesions, there is crystal boundary and move the minimizing with crystal boundary, and the eliminating of pore between particle, thus causing granule to reduce, base substrate will there will be contraction in the process.Because many particles are grown up simultaneously, after certain hour, the multiple polygon condensate of inevitable mutual tightly packed one-tenth, forms the institutional framework of porcelain base.Consider the contradiction between the intensity of matrix and porosity, pore size etc., suitable drying and sintering schedule can avoid the phenomenon that crackle appears in base substrate, landslide is even ruptured.
Embodiment 1
Prepare a kind of Tubular Ceramic Substrate of high breaking strength, specifically implement according to following steps:
Step 1, takes raw material and mixes, and takes aggregate, pore former and sintering aid, and mixes, obtain powder according to formula; Concrete steps are:
First, raw material is taken according to following formula:
Aggregate 90.5%, pore former 3%, all the other are sintering aid, and the content sum of three kinds of components is 100%; Aggregate is alundum (Al2O3); Pore former is carboxymethyl cellulose or polyvinyl alcohol; Sintering aid is the mixture of zinc powder, cupric oxide and titanium oxide, and the ratio of three is 1:1.5:3.The particle diameter of aggregate, pore former and sintering aid is 30 ~ 40 μm.The various raw materials taken in above step are mixed, obtains powder.
Step 2, prepares pug: first mixed with distilled water by the powder mixed in step 1, and the mass ratio of powder and distilled water is 20:9; Again the accurate reinforcement electric mixer of mixture is stirred 50 minutes, the speed of stirring is 1000 revs/min.Then the product of step 2.2 is placed in heat collecting type constant-temperature heating magnetic stirring apparatus and adds thermal agitation 35 minutes, make the moisture content of mixture reach 25%.
Step 3, ageing: the uniform pug preparation obtained in step 2 is become uniform bulk and is placed in container, with preservative film sealing, ageing 20 hours.
Step 4, shaping: first, the pug after step 3 ageing is taken out 25g, pug is rolled in uniformly on diameter is 6mm, length is 17cm wooden large knitting needle, then by the mode of roll forming, becomes the cylinder pug base of surface uniform; Then, the wooden large knitting needle in the cylinder pug base obtained is extracted out, makes tubulose pug base; Finally again tubulose pug base is placed in biochemical cultivation case dry 48h at 20 DEG C, obtains tubular ceramic biscuit.
Step 5, sintering, tubular ceramic biscuit step 4.3 obtained is placed in Muffle furnace and sinters under certain sintering schedule.Then the product sintered is naturally cooled to room temperature, obtain ceramic pipe type supporter.Wherein, sintering schedule is, be warming up to 1100 DEG C with the heating rate of 2 DEG C/min, sintering time is 6h.
Embodiment 2
Prepare a kind of Tubular Ceramic Substrate of high breaking strength, specifically implement according to following steps:
Step 1, takes raw material and mixes, and takes aggregate, pore former and sintering aid, and mixes, obtain powder according to formula; Concrete steps are:
First, raw material is taken according to following formula:
Aggregate 92%, pore former 4%, all the other are sintering aid, and the content sum of three kinds of components is 100%; Aggregate is alundum (Al2O3); Pore former is carboxymethyl cellulose or polyvinyl alcohol; Sintering aid is the mixture of zinc powder, cupric oxide and titanium oxide, and the ratio of three is 1:2:5.The particle diameter of aggregate, pore former and sintering aid is 30 ~ 40 μm.The various raw materials taken in above step are mixed, obtains powder.
Step 2, prepares pug: first mixed with distilled water by the powder mixed in step 1, and the mass ratio of powder and distilled water is 20:10; Again the accurate reinforcement electric mixer of mixture is stirred 70 minutes, the speed of stirring is 1500 revs/min.Then product is placed in heat collecting type constant-temperature heating magnetic stirring apparatus and adds thermal agitation 40 minutes, make the moisture content of mixture reach 28%.
Step 3, ageing: the uniform pug preparation obtained in step 2 is become uniform bulk and is placed in container, with preservative film sealing, ageing 24 hours.
Step 4, shaping: first, the pug after step 3 ageing is taken out 26g, pug is rolled in uniformly on diameter is 8mm, length is 19cm wooden large knitting needle, then by the mode of roll forming, becomes the cylinder pug base of surface uniform; Then, the wooden large knitting needle in the cylinder pug base obtained is extracted out, makes tubulose pug base; Finally again tubulose pug base is placed in biochemical cultivation case dry 50h at 22 DEG C, obtains tubular ceramic biscuit.
Step 5, sintering, is placed in Muffle furnace by the tubular ceramic biscuit obtained in step 4 and sinters under certain sintering schedule.Then the product sintered is naturally cooled to room temperature, obtain ceramic pipe type supporter.Wherein, sintering schedule is, be warming up to 1200 DEG C with the heating rate of 5 DEG C/min, sintering time is 10h.
Embodiment 3
Prepare a kind of Tubular Ceramic Substrate of high breaking strength, specifically implement according to following steps:
Step 1, takes raw material and mixes, and takes aggregate, pore former and sintering aid, and mixes, obtain powder according to formula; Concrete steps are:
First, raw material is taken according to following formula:
Aggregate 91%, pore former 3.5%, all the other are sintering aid, and the content sum of three kinds of components is 100%; Aggregate is alundum (Al2O3); Pore former is carboxymethyl cellulose or polyvinyl alcohol; Sintering aid is the mixture of zinc powder, cupric oxide and titanium oxide, and the ratio of three is 1:1.8:4.The particle diameter of aggregate, pore former and sintering aid is 30 ~ 40 μm.The various raw materials taken in above step are mixed, obtains powder.
Step 2, prepares pug: first mixed with distilled water by the powder mixed in step 1, and the mass ratio of powder and distilled water is 20:9.5; Again the accurate reinforcement electric mixer of the mixture in step 2.1 is stirred 60 minutes, the speed of stirring is 1200 revs/min.Then product is placed in heat collecting type constant-temperature heating magnetic stirring apparatus and adds thermal agitation 40 minutes, make the moisture content of mixture reach 26%.
Step 3, ageing: the uniform pug preparation obtained in step 2 is become uniform bulk and is placed in container, with preservative film sealing, ageing 22 hours.
Step 4, shaping: first, the pug after step 3 ageing is taken out 25.5g, pug is rolled in uniformly on diameter is 7mm, length is 18cm wooden large knitting needle, then by the mode of roll forming, becomes the cylinder pug base of surface uniform; Then, the wooden large knitting needle in the cylinder pug base obtained is extracted out, makes tubulose pug base; Finally again tubulose pug base is placed in biochemical cultivation case dry 49h at 21 DEG C, obtains tubular ceramic biscuit.
Step 5, sintering, tubular ceramic biscuit step 4.3 obtained is placed in Muffle furnace and sinters under certain sintering schedule.Then the product sintered is naturally cooled to room temperature, obtain ceramic pipe type supporter.Wherein, sintering schedule is, be warming up to 1150 DEG C with the heating rate of 3 DEG C/min, sintering time is 8h.
Embodiment 4
Prepare a kind of Tubular Ceramic Substrate of high breaking strength, specifically implement according to following steps:
Step 1, takes raw material and mixes, and takes aggregate, pore former and sintering aid, and mixes, obtain powder according to formula; Concrete steps are:
First, raw material is taken according to following formula:
Aggregate 91.5%, pore former 4%, all the other are sintering aid, and the content sum of three kinds of components is 100%; Aggregate is alundum (Al2O3); Pore former is carboxymethyl cellulose or polyvinyl alcohol; Sintering aid is the mixture of zinc powder, cupric oxide and titanium oxide, and the ratio of three is 1:1.5:4.The particle diameter of aggregate, pore former and sintering aid is 30 ~ 40 μm.The various raw materials taken in above step are mixed, obtains powder.
Step 2, prepares pug: first mixed with distilled water by the powder mixed in step 1, and the mass ratio of powder and distilled water is 20:9 ~ 10; Again the accurate reinforcement electric mixer of the mixture in step 2.1 is stirred 50 minutes, the speed of stirring is 1500 revs/min.Then product is placed in heat collecting type constant-temperature heating magnetic stirring apparatus and adds thermal agitation 40 minutes, make the moisture content of mixture reach 27%.
Step 3, ageing: the uniform pug preparation obtained in step 2 is become uniform bulk and is placed in container, with preservative film sealing, ageing 23 hours.
Step 4, shaping: first, the pug after step 3 ageing is taken out 26g, pug is rolled in uniformly on diameter is 6mm, length is 19cm wooden large knitting needle, then by the mode of roll forming, becomes the cylinder pug base of surface uniform; Then, the wooden large knitting needle in cylinder pug base step 4.1 obtained is extracted out, makes tubular type pug base; Finally again the tubulose pug base in step 4.2 is placed in biochemical cultivation case dry 49h at 22 DEG C, obtains tubular ceramic biscuit.
Step 5, sintering, tubular ceramic biscuit step 4.3 obtained is placed in Muffle furnace and sinters under certain sintering schedule.Then the product sintered is naturally cooled to room temperature, obtain ceramic pipe type supporter.Wherein, sintering schedule is, be warming up to 1100 DEG C with the heating rate of 4 DEG C/min, sintering time is 8h.
Embodiment 5
Prepare a kind of Tubular Ceramic Substrate of high breaking strength, specifically implement according to following steps:
Step 1, takes raw material and mixes, and takes aggregate, pore former and sintering aid, and mixes, obtain powder according to formula; Concrete steps are:
First, raw material is taken according to following formula:
Aggregate 92%, pore former 4%, all the other are sintering aid, and the content sum of three kinds of components is 100%; Aggregate is alundum (Al2O3); Pore former is carboxymethyl cellulose or polyvinyl alcohol; Sintering aid is the mixture of zinc powder, cupric oxide and titanium oxide, and the ratio of three is 1:2:5.The particle diameter of aggregate, pore former and sintering aid is 30 ~ 40 μm.The various raw materials taken in above step are mixed, obtains powder.
Step 2, prepares pug: first mixed with distilled water by the powder mixed in step 1, and the mass ratio of powder and distilled water is 20:9; Again the accurate reinforcement electric mixer of mixture is stirred 50-70 minute, the speed of stirring is 1500 revs/min.Then the product of step 2.2 is placed in heat collecting type constant-temperature heating magnetic stirring apparatus and adds thermal agitation 42 minutes, make the moisture content of mixture reach 26%.
Step 3, ageing: the uniform pug preparation obtained in step 2 is become uniform bulk and is placed in container, with preservative film sealing, ageing 22 hours.
Step 4, shaping: first, the pug after step 3 ageing is taken out 26g, pug is rolled in uniformly on diameter is 8mm, length is 19cm wooden large knitting needle, then by the mode of roll forming, becomes the cylinder pug base of surface uniform; Then, the wooden large knitting needle in cylinder pug base step 4.1 obtained is extracted out, makes tubular type pug base; Finally again the tubulose pug base in step 4.2 is placed in biochemical cultivation case dry 48h at 20 DEG C, obtains tubular ceramic biscuit.
Step 5, sintering, tubular ceramic biscuit step 4 obtained is placed in Muffle furnace and sinters under certain sintering schedule.Then the product sintered is naturally cooled to room temperature, namely obtain ceramic pipe type supporter.Wherein, sintering schedule is, be warming up to 1200 DEG C with the heating rate of 5 DEG C/min, sintering time is 10h.
The performance parameter of the Tubular Ceramic Substrate prepared by above-mentioned 5 embodiments is as shown in table 1:
The performance parameter of table 1 Tubular Ceramic Substrate
As can be seen from the above table, the properties of the Tubular Ceramic Substrate utilizing this method to prepare is excellent, and the sintering temperature of method of the present invention is 1100 ~ 1200 DEG C, while reducing sintering temperature, improves its rupture strength.
Porosity refers to the ratio of the cumulative volume of the slight void in porous media and the cumulative volume of this porous media. effective drainage porosity refers to the ratio of the cumulative volume of the slight void be interconnected in porous media and the apparent volume of this porous media;
Pure water flux is an important film properties parameter, is the reflection directly perceived of membrane permeability energy.
The chemical stability of porous ceramics mainly refers to its acid-alkali-resistant degree, the quality of acid-proof alkaline, is to decide according to the size of porous ceramics sample loss of strength rate and rate of weight loss after acid, alkaline media corrosion.
| Test sample | Rupture strength | Porosity | Pure water flux | Acid and alkali corrosion rate |
| (MPa) | (％) | (L/m 2.h.MPa) | (％) | |
| Contrast sample | 55.82 | 22 | 2580 | 1.17/0.68 |
| This method | 78.76 | 26 | 1845.45 | 1.27/0.88 |
In general, when rupture strength improves, porosity and pure water flux have a declining tendency, but after interpolation metallic zinc, rupture strength and the porosity of supporter all have rising, this is because the liquid phase that zinc is formed is filled with supporter inside, hole are increased and the cause diminished.
Claims (6)
1. a preparation method for high breaking strength earthenware supporter, is characterized in that, specifically implements according to following steps:
Step 1, takes raw material and mixes, and takes aggregate, pore former and sintering aid, and mixes, obtain powder, be specially according to formula:
Step 1.1, takes raw material according to following formula:
Aggregate 90.5-92%, pore former 3% ~ 4%, all the other are sintering aid, and the content sum of three kinds of components is 100%;
Described aggregate is alundum (Al2O3);
Described pore former is carboxymethyl cellulose or polyvinyl alcohol;
Described sintering aid is the mixture of zinc powder, cupric oxide and titanium oxide, and the ratio of three is 1:1.5 ~ 2:3 ~ 5;
The various raw materials taken in step 1.1 are mixed, obtain powder by step 1.2;
The particle diameter of described aggregate, pore former and sintering aid is 30 ~ 40 μm;
Step 2, prepares pug;
Step 3, ageing, carries out ageing by the pug obtained in step 2;
Step 4, shaping, the pug after ageing in step 3 is made the biscuit of definite shape;
Step 5, sintering, puts into agglomerating plant by the biscuit made in step 4 and sinters, obtain high breaking strength earthenware supporter.
2. the preparation method of high breaking strength earthenware supporter according to claim 1, it is characterized in that, described step 2 is specifically implemented according to following steps:
Step 2.1, mixes the powder mixed in step 1 with distilled water, and the mass ratio of powder and distilled water is 20:9 ~ 10;
Step 2.2, the accurate reinforcement electric mixer of the mixture in step 2.1 is stirred 50-70 minute, and the speed of stirring is 1000-1500 rev/min;
Step 2.3, is placed in heat collecting type constant-temperature heating magnetic stirring apparatus by the product of step 2.2 and adds thermal agitation 35-45 minute, makes the moisture content of mixture reach 25 ~ 28%.
3. the preparation method of high breaking strength earthenware supporter according to claim 1, it is characterized in that, the concrete grammar of described step 3 is: the uniform pug preparation obtained in step 2 is become uniform bulk and is placed in container, with preservative film sealing, and ageing 20 ~ 24 hours.
4. the preparation method of high breaking strength earthenware supporter according to claim 1, is characterized in that, specifically implementing according to following steps of described step 4:
Step 4.1, takes out 25 ~ 26g by the pug after step 3 ageing, is rolled in uniformly by pug on diameter is 6 ~ 8mm, length is 17 ~ 19cm wooden large knitting needle, then by the mode of roll forming, becomes the cylinder pug base of surface uniform;
Step 4.2, the wooden large knitting needle in cylinder pug base step 4.1 obtained is extracted out, makes tubulose pug base;
Step 4.3, is placed in biochemical cultivation case dry 48-50h at 20 ~ 22 DEG C by the tubulose pug base in step 4.2, obtains tubular ceramic biscuit.
5. the preparation method of high breaking strength earthenware supporter according to claim 1, it is characterized in that, the concrete steps of described step 5 are:
Step 5.1, tubular ceramic biscuit step 4.3 obtained is placed in Muffle furnace and sinters under certain sintering schedule;
Step 5.2, naturally cools to room temperature by the product sintered, and obtains ceramic pipe type supporter.
6. the preparation method of high breaking strength earthenware supporter according to claim 5, is characterized in that, described sintering schedule is, is warming up to 1100 ~ 1200 DEG C with the heating rate of 2 ~ 5 DEG C/min, and sintering time is 6 ~ 10h.
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| CN105624759B (en) * | 2015-12-30 | 2018-02-16 | 苏州容电储能科技有限公司 | Ceramic membrane with capillary structure and super dehumidifier wetting property and preparation method thereof |
| CN110386807A (en) * | 2019-07-23 | 2019-10-29 | 西安工程大学 | A kind of inorganic ceramic film support and preparation method thereof of big flux high intensity |
| CN110550935A (en) * | 2019-08-27 | 2019-12-10 | 西安工程大学 | low-temperature fired porous ceramic tube matrix and preparation method thereof |
| CN113213895A (en) * | 2021-06-08 | 2021-08-06 | 宜兴市兴洲特种陶瓷厂(普通合伙) | Novel electric heating high-temperature-resistant ceramic tube and manufacturing method thereof |
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|---|---|---|---|---|
| CN102653474A (en) * | 2012-04-09 | 2012-09-05 | 南京工业大学 | Method for preparing high-porosity porous ceramic membrane support |
| CN102671550A (en) * | 2012-06-01 | 2012-09-19 | 清华大学 | Ceramic membrane tube support and preparation method thereof |
-
2014
- 2014-05-29 CN CN201410234751.XA patent/CN104016708B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653474A (en) * | 2012-04-09 | 2012-09-05 | 南京工业大学 | Method for preparing high-porosity porous ceramic membrane support |
| CN102671550A (en) * | 2012-06-01 | 2012-09-19 | 清华大学 | Ceramic membrane tube support and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| "烧成制度对多孔氧化铝陶瓷膜支撑体性能的影响";同帜 等;《硅酸盐通报》;20111231;第30卷(第6期);第1440-1443页 * |
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