CN103102143B - Preparation method of ceramic paste slurry molded based on bionics - Google Patents
Preparation method of ceramic paste slurry molded based on bionics Download PDFInfo
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- CN103102143B CN103102143B CN201310036245.5A CN201310036245A CN103102143B CN 103102143 B CN103102143 B CN 103102143B CN 201310036245 A CN201310036245 A CN 201310036245A CN 103102143 B CN103102143 B CN 103102143B
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Abstract
The invention discloses a preparation method of ceramic paste slurry molded based on bionics. The method comprises the following steps of: respectively weighing 50-70 percent of grinded pure ceramic powder bodies, 4-6 percent of lubricants, 1-3 percent of polypropylene ethanol, 2-8 percent of binders, 0.1-0.5 percent of dispersing agents, and the balance of distilled water in percentage by weight; mixing and stirring until solid segregation objects and bubbles in the mixed slurry do not exist; regulating the range of a pH value to be 5-7; controlling the viscosity of the mixed slurry to be less than 1Pa.s; and finally molding the mixed slurry in an extrusion or injection mode. The preparation method of ceramic paste slurry molded based on bionics is simple, feasible and low in cost, can meet the molding requirement of any extrusion or injection equipment, and can be used for solving the problem that complicated ceramic products are difficulty molded.
Description
Technical field
The invention belongs to technical field of ceramic material, relate to a kind of collocation method based on bionical forming ceramic lotion slurry.
Background technology
Stupalith is with a class ceramic natural or that synthetic compound process is shaped and high temperature sintering is made, has the advantages such as high-melting-point, high rigidity, high-wearing feature, resistance to oxidation.Can be used as structured material, tool material and even functional materials.The moulding process of stupalith is the key factor that reduces ceramic cost and improve ceramic part performance.Advanced ceramics is because intensity is very large, adopt mechanical workout to obtain the finished product cost high, and the injection molding that adopts lotion slurry can obtain approaching the net shape of product, the ceramic minitype contact pin of using as the joints of optical fibre in optical-fibre communications, ceramic tooth, tooth-implanting pottery screw rod and orthodontic ceramic bracket, also have at many high technology ceramics component in semi-conductor, automobile, electronics, high-grade clock and watch and national defence field etc., its common ground is that size is little, complex-shaped, and precision prescribed is high.
Research and application about injection molding with ceramic paste somaplasm material, lot of domestic and international scholar is studied by different technical recipes.Paraffin-the polypropylene that is 79:20:1 using mass percent if any people-stearic acid system is as thermoplastic adhesive, and in moulding, the mass percent of alumina powder take 70% as best.There is people Al in the U.S.
2o
3powder, water-soluble binder PEG are as extrusion lubricant, glycerine as lubricant, and deionized water, as medium, has drawn the slurry of reasonable ceramic injection forming.But the ceramic paste somaplasm material bad adaptability that these methods obtain, on different Working environments and distinct device, result of use differs greatly, and starting material composition should not meet the bottleneck that becomes its widespread use of restriction.
Summary of the invention
The object of this invention is to provide a kind of collocation method based on bionical forming ceramic lotion slurry, solved the problem of the ceramic paste somaplasm material bad adaptability that existing method makes.
The technical solution adopted in the present invention is, collocation method based on bionical forming ceramic lotion slurry, take respectively by weight percentage 50%～70% pure ceramic powder grinding, 4%～6% lubricant, 1%～3% poly-the third ethanol, 2%～8% binding agent and 0.1%～0.5% dispersion agent, surplus is distilled water, after mixing, be stirred to and in mixed slurry, there is no solid segregation thing and bubble, then regulating pH value is 5～7, and the viscosity of controlling mixed slurry is not more than 1Pas, finally by mixed slurry extruding or injection molding.
Feature of the present invention is also,
Pure ceramic powder is one or more in aluminum oxide, silicon oxide, silicon carbide and nitride, and the granularity of pure ceramic powder is not more than 10 μ m, is shaped as subsphaeroidal.
Lubricant is glycerol, and binding agent is a kind of in polyvinyl alcohol, OK a karaoke club frozen glue and polymethylmethacrylate, and dispersion agent is a kind of in sodium stearate, Sodium hexametaphosphate 99 and acid polyethylene sodium salt.
Churning time is 2～4h, regulates pH value to adopt hydrochloric acid or ammoniacal liquor.
Extruding or injection molding are carried out in computer-controlled lotion sizing material forming equipment.
The invention has the beneficial effects as follows,
1. the present invention is based on the collocation method of bionical forming ceramic lotion slurry, do not need special equipment, simple, cost is low, and the moulding needs that can meet any extruding or injection device, have solved the problem that complicated ceramic is difficult to moulding and is subject to many limitations.
2. the present invention is based on the collocation method configuration ceramic paste somaplasm material of bionical forming ceramic lotion slurry, low viscosity, high solid phase content ﹙ volume fraction >=50% ﹚, dispersed, not only applied widely, and provide a kind of approach for the artificial ceramic bone of complicated bionic.
Accompanying drawing explanation
Fig. 1 is the electron-microscope scanning figure after the lotion slurry extrusion molding of the embodiment of the present invention 1 configuration.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The present invention is based on the collocation method of bionical forming ceramic lotion slurry, take respectively by weight percentage 50%～70% granularity and be not more than 10 μ m, be shaped as subglobose pure ceramic powder, 4%～6% glycerol, 1%～3% poly-the third ethanol, 2%～8% binding agent and 0.1%～0.5% dispersion agent, surplus is distilled water, after mixing, stir 2～4h and there is no solid segregation thing and bubble to mixed slurry, then with hydrochloric acid or ammoniacal liquor, regulating pH value is 5～7, and the viscosity of controlling mixed slurry is not more than 1Pas, finally in computer-controlled lotion sizing material forming equipment, mixed slurry is pushed or injection molding according to the geomery of concrete part.
Wherein pure ceramic powder is one or more in aluminum oxide, silicon oxide, silicon carbide and nitride; Binding agent is a kind of in polyvinyl alcohol, OK a karaoke club frozen glue and polymethylmethacrylate; Dispersion agent is a kind of in sodium stearate, Sodium hexametaphosphate 99 and acid polyethylene sodium salt.
The present invention is based on the collocation method of bionical forming ceramic lotion slurry, the ceramic paste somaplasm material of configuration does not need special equipment, and simple, cost is low, and the moulding needs that can meet any extruding or injection device, have solved the problem that complicated ceramic is difficult to moulding.
The present invention is based on the collocation method configuration ceramic paste somaplasm material of bionical forming ceramic lotion slurry, low viscosity, high solid phase content ﹙ volume fraction >=50% ﹚, dispersed, not only applied widely, and provide a kind of approach for the artificial ceramic bone of complicated bionic.
Embodiment 1
Take respectively by weight percentage 50% granularity and be not more than 10 μ m, be shaped as subglobose aluminum oxide, 4% glycerol, 1% poly-the third ethanol, 6% OK a karaoke club frozen glue, 0.175% Sodium hexametaphosphate 99 and 38.825% distilled water, after mixing, stir 4h and there is no solid segregation thing and bubble to mixed slurry, then hydrochloric acid or ammoniacal liquor adjusting pH value are 6, and the viscosity of controlling mixed slurry is not more than 1Pas, finally computer-controlled lotion material will be in molding device by mixed slurry according to geomery extruding or the injection molding of concrete part.
Embodiment 2
Take respectively by weight percentage 50% granularity and be not more than 10 μ m, be shaped as subglobose silicon carbide, 4% glycerol, 1% poly-the third ethanol, 4% polymethylmethacrylate, 0.175% Sodium hexametaphosphate 99 and 40.825% distilled water, after mixing, stir 4h and there is no solid segregation thing and bubble to mixed slurry, then hydrochloric acid or ammoniacal liquor adjusting pH value are 5, and the viscosity of controlling mixed slurry is not more than 1Pas, finally computer-controlled lotion material will be in molding device by mixed slurry according to geomery extruding or the injection molding of concrete part.
Embodiment 3
Take respectively by weight percentage 50% granularity and be not more than 10 μ m, be shaped as subglobose silicon oxide, 4% glycerol, 1% poly-the third ethanol, 6% OK a karaoke club frozen glue, 0.2% sodium stearate and 38.8% distilled water, after mixing, stir 4h and there is no solid segregation thing and bubble to mixed slurry, then hydrochloric acid or ammoniacal liquor adjusting pH value are 5, and the viscosity of controlling mixed slurry is not more than 1Pas, finally computer-controlled lotion material will be in molding device by mixed slurry according to geomery extruding or the injection molding of concrete part.
Embodiment 4
Take respectively by weight percentage 60% granularity and be not more than 10 μ m, be shaped as subglobose nitride, 6% glycerol, 2% poly-the third ethanol, 2% polyvinyl alcohol, 0.5% acid polyethylene sodium salt and 29.5% distilled water, after mixing, stir 2h and there is no solid segregation thing and bubble to mixed slurry, then hydrochloric acid or ammoniacal liquor adjusting pH value are 6, and the viscosity of controlling mixed slurry is not more than 1Pas, finally computer-controlled lotion material will be in molding device by mixed slurry according to geomery extruding or the injection molding of concrete part.
Embodiment 5
Take respectively by weight percentage 70% granularity and be not more than 10 μ m, be shaped as subglobose silicon oxide, aluminum oxide and nitride, 5% glycerol, 3% poly-the third ethanol, 8% polyvinyl alcohol, 0.1% sodium stearate and 13.9% distilled water, after mixing, stir 3h and there is no solid segregation thing and bubble to mixed slurry, then hydrochloric acid or ammoniacal liquor adjusting pH value are 5, and the viscosity of controlling mixed slurry is not more than 1Pas, finally computer-controlled lotion material will be in molding device by mixed slurry according to geomery extruding or the injection molding of concrete part.
Embodiment 6
Take respectively by weight percentage 65% granularity and be not more than 10 μ m, be shaped as subglobose silicon carbide and aluminum oxide, 5% glycerol, 3% poly-the third ethanol, 5% polyvinyl alcohol, 0.3% sodium stearate and 21.7% distilled water, after mixing, stir 2.5h and there is no solid segregation thing and bubble to mixed slurry, then hydrochloric acid or ammoniacal liquor adjusting pH value are 6, and the viscosity of controlling mixed slurry is not more than 1Pas, finally computer-controlled lotion material will be in molding device by mixed slurry according to geomery extruding or the injection molding of concrete part.
As shown in Figure 1, as we can see from the figure, the aluminum oxide base substrate of extrusion molding is more even, obviously has organism adhesion between particle and particle for electron-microscope scanning figure after the lotion slurry extrusion molding of embodiment 1 configuration.
Claims (3)
1. the collocation method based on bionical forming ceramic lotion slurry, it is characterized in that, take respectively by weight percentage 50%～70% pure ceramic powder grinding, 4%～6% lubricant, 1%～3% poly-the third ethanol, 2%～8% binding agent and 0.1%～0.5% dispersion agent, surplus is distilled water, after mixing, be stirred to and in mixed slurry, there is no solid segregation thing and bubble, then regulating pH value is 5～7, and the viscosity of controlling mixed slurry is not more than 1Pas, finally by mixed slurry extruding or injection molding;
Described pure ceramic powder is one or more in aluminum oxide, silicon carbide, silicon oxide and nitride, and the granularity of described pure ceramic powder is not more than 10 μ m, is shaped as subsphaeroidal;
Described lubricant is glycerol, and described binding agent is a kind of in polyvinyl alcohol, OK a karaoke club frozen glue and polymethylmethacrylate, and described dispersion agent is a kind of in sodium stearate, Sodium hexametaphosphate 99 and acid polyethylene sodium salt.
2. the collocation method based on bionical forming ceramic lotion slurry according to claim 1, is characterized in that, the time of described stirring is 2～4h, and described adjusting pH value adopts hydrochloric acid or ammoniacal liquor.
3. the collocation method based on bionical forming ceramic lotion slurry according to claim 2, is characterized in that, described extruding or injection molding are carried out in computer-controlled lotion sizing material forming equipment.
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| CN108033781A (en) * | 2017-12-18 | 2018-05-15 | 黄岳娇 | A kind of formula of ceramic paste |
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| US5204296A (en) * | 1989-09-26 | 1993-04-20 | Rockwell International Corporation | Process for injection molding ceramics |
| KR100321295B1 (en) * | 1999-06-25 | 2002-03-18 | 박호군 | Ceramics-aluminum composite and its preparation method |
| CN101560104B (en) * | 2009-05-12 | 2011-11-16 | 宁波欧翔精细陶瓷技术有限公司 | Preparation method for silicon carbide ceramic tube or rod |
| CN101857458B (en) * | 2010-05-11 | 2013-04-10 | 昆明理工大学 | Preparation method of Ce-Fe-Zr combined metal oxide honeycomb ceramics type integral oxygen carrier |
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