CN115838284A - Preparation method of water-based casting film belt for nitrogen-oxygen sensor - Google Patents
Preparation method of water-based casting film belt for nitrogen-oxygen sensor Download PDFInfo
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- CN115838284A CN115838284A CN202211225550.4A CN202211225550A CN115838284A CN 115838284 A CN115838284 A CN 115838284A CN 202211225550 A CN202211225550 A CN 202211225550A CN 115838284 A CN115838284 A CN 115838284A
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Abstract
The application discloses a tape casting slurry of a water-based tape casting film belt for a nitrogen-oxygen sensor, which comprises zirconia ceramic powder, a water-based acrylic adhesive, a high-molecular comb-type dispersant, a plasticizer DOP dioctyl phthalate, a defoaming agent and deionized water. In the prior art, in the links of ball milling, tape casting and binder removal sintering, some gases are volatilized, so that the environment and the body of staff are damaged to a certain extent and the price is high, the preparation process is environment-friendly and free of any pollution, the thickness of the film after tape casting is 100-300 microns, the surface is smooth, and no obvious defect exists.
Description
Technical Field
The invention relates to the technical field of sensor production, in particular to tape casting slurry of a water-based tape casting film belt for a nitrogen-oxygen sensor and a preparation method thereof.
Background
The nitrogen-oxygen sensor chip needs to be subjected to a casting process, a cutting process, a hole filling printing process, a laminating process, an isostatic pressing process, a slitting process, a binder removal sintering process and the like in the production process.
The zirconium dioxide membrane band of the traditional nitrogen-oxygen sensor chip adopts an organic system casting sheet, for example, in patent CN103951421, the solvent is a mixture of butanone and absolute ethyl alcohol, the zirconium dioxide membrane band is characterized by having certain harm to the environment and the body of staff and being expensive, and in order to solve the problem, a preparation method of a water-based casting membrane band is developed.
Disclosure of Invention
The present invention is directed to solving one of the technical problems of the prior art.
The application provides casting slurry of a water-based casting film belt for a nitrogen-oxygen sensor, which is characterized by comprising zirconia ceramic powder, a water-based acrylic acid adhesive, a high-molecular comb-type dispersing agent, a DOP plasticizer dioctyl phthalate, a defoaming agent and deionized water.
Preferably: the mass fraction of the zirconia ceramic powder is 55-70%, the mass fraction of the water-based acrylic acid adhesive is 16-20%, the mass fraction of the polymer comb-type dispersant is 0.5-2%, the mass fraction of the plasticizer DOP dioctyl phthalate is 2-4%, the mass fraction of the defoaming agent is 0.5-1.5%, and the balance is deionized water.
Preferably, the following components are used: the preparation method of the water-based acrylic adhesive aqueous solution comprises the following steps: weighing 60-80% of deionized water, placing the deionized water in a water bath kettle, heating the water bath kettle to 70-90 ℃, adding 20-40% of water-based acrylic acid adhesive into a beaker filled with 60-80% of deionized water, and simultaneously magnetically stirring at the speed of 100-300 r/min until the adhesive is completely dissolved to form uniform colloid.
Preferably: a water-based acrylic adhesive 30% was added to deionized water charged with 70%.
Preferably, the following components are used: the temperature in the water bath is heated to 80 ℃ at the speed of 200 r/min.
The invention also discloses a preparation method of the water-based tape casting film belt for the nitrogen-oxygen sensor, which is characterized in that,
ball-milling and uniformly mixing deionized water and a dispersing agent for 15-45 min at a ball-milling speed of 60-100 r/min, adding zirconium dioxide powder into a ball-milling tank for 16-32 h at a ball-milling speed of 60-100 r/min to prepare ceramic slurry;
testing the pH value of the slurry by using a pH agent, if the pH value is more than 7, adding oxalic acid, if the pH value is less than 7, adding ammonia water by using a dropper, stirring by using a glass rod after the addition is finished, and then testing the pH value by using the pH agent until the pH value is within the range of 7 +/-0.5;
adding water-based acrylic acid adhesive aqueous solution and dioctyl phthalate into the ceramic slurry, carrying out ball milling for 3-6 h to prepare casting slurry, then adding a defoaming agent, testing the viscosity of the slurry, finally pouring out the slurry, and carrying out vacuum defoaming treatment.
Preferably, the following components are used: and (3) placing the casting slurry subjected to vacuum defoaming treatment into a slurry tank of a film tape casting machine, adjusting the height of a cutter to be 200-500 micrometers, adjusting the speed of a film tape to be 0.4-0.8 m/min, setting the drying temperature to be 45-65 ℃, starting an air exhaust device, carrying out casting forming, and cutting the cast film sheet.
Preferably: ball-milling deionized water and a dispersing agent uniformly, wherein the ball-milling time is 30min, the ball-milling speed is 80 r/min, adding zirconium dioxide powder into a ball-milling tank, the ball-milling time is 24h, and the ball-milling speed is 80 r/min, thus preparing the ceramic slurry.
Preferably: adding water-based acrylic acid adhesive aqueous solution and dioctyl phthalate into the ceramic slurry, and carrying out ball milling for 6h to prepare casting slurry.
By adopting the technical scheme, in the prior art, in the links of ball milling, tape casting and binder removal sintering, some gases are volatilized, so that the environment and the body of staff are damaged to a certain extent and the price is high, and the preparation process is environment-friendly and free of any pollution because the zirconia ceramic powder, the water-based acrylic acid adhesive, the high-molecular comb-type dispersing agent, the plasticizer DOP dioctyl phthalate, the defoaming agent and the deionized water are adopted.
The advantageous effects of the present invention will be explained in detail in the embodiments, thereby making the advantageous effects more apparent.
Drawings
FIG. 1 is a schematic process flow diagram according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below clearly with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
Example 1:
the casting slurry of the water-based casting film belt for the nitrogen-oxygen sensor comprises zirconium oxide ceramic powder, a water-based acrylic adhesive, a high-molecular comb-type dispersing agent, a plasticizer DOP dioctyl phthalate, a defoaming agent and deionized water.
In the specific embodiment of the invention, the mass fraction of the zirconia ceramic powder is 55-70%, the mass fraction of the water-based acrylic acid adhesive is 16-20%, the mass fraction of the high-molecular comb-type dispersant is 0.5-2%, the mass fraction of the plasticizer DOP dioctyl phthalate is 2-4%, the mass fraction of the defoaming agent is 0.5-1.5%, and the balance is deionized water.
In a specific embodiment of the present invention, the preparation method of the aqueous solution of the water-based acrylic adhesive comprises: weighing 60-80% of deionized water, placing the deionized water in a water bath, heating the deionized water to 70-90 ℃, adding 20-40% of water-based acrylic acid adhesive into a beaker filled with 60-80% of deionized water, and simultaneously carrying out magnetic stirring at the speed of 100-300 r/min until the glue is completely dissolved to form uniform colloid. A water-based acrylic adhesive 30% was added to deionized water charged with 70%. The temperature in the water bath kettle is heated to 80 ℃ at the speed of 200 r/min.
Example 2:
as shown in FIG. 1, the invention also discloses a method for preparing the water-based casting film belt for the nitrogen-oxygen sensor, in the embodiment of the invention,
ball-milling deionized water and a dispersing agent uniformly, wherein the ball-milling time is 45min, the ball-milling speed is 100 r/min, adding zirconium dioxide powder into a ball-milling tank, the ball-milling time is 32h, and the ball-milling speed is 100 r/min, thus preparing ceramic slurry;
testing the pH value of the slurry by using a pH agent, adding oxalic acid if the pH value is more than 7, adding ammonia water if the pH value is less than 7, adding the ammonia water by using a dropper, stirring by using a glass rod after the addition is finished, and then testing the pH value by using the pH agent until the pH value is within the range of 7 +/-0.5;
adding a water-based acrylic acid adhesive aqueous solution and dioctyl phthalate into the ceramic slurry, carrying out ball milling for 6h to prepare casting slurry, then adding a defoaming agent, testing the viscosity of the slurry, finally pouring out the slurry, and carrying out vacuum defoaming treatment.
In the embodiment of the invention, casting slurry after vacuum defoamation treatment is put into a slurry tank of a film tape casting machine, the height of a knife is adjusted to be 500 micrometers, the speed of a film tape is adjusted to be 0.8m/min, the drying temperature is set to be 65 ℃, an air exhaust device is started for casting, and a cast membrane is cut.
Example 3:
as shown in FIG. 1, in a specific embodiment of the present invention, a method for preparing a water-based acrylic adhesive aqueous solution comprises: weighing 70% of deionized water by using a beaker, placing the beaker in a water bath, heating the beaker to 80 ℃, adding 30% of water-based acrylic acid adhesive into the beaker filled with 70% of deionized water, and simultaneously carrying out magnetic stirring at the speed of 200 r/min until the adhesive is completely dissolved to form uniform colloid.
And (3) placing the casting slurry subjected to vacuum defoaming treatment into a slurry tank of a 10-meter-long film tape casting machine, adjusting the height of a cutter to be 200-500 micrometers, adjusting the speed of a film tape to be 0.4-0.8 m/min, setting the drying temperature to be 45-65 ℃, starting an exhaust device, and performing casting molding. The thickness of the film after casting is 100-300 microns, and the surface is smooth and has no obvious defects.
Cutting the cast membrane into square membrane strips of 170-200 mm according to design requirements; then, forming processing of positioning holes, conductive holes and a reaction air chamber is carried out on the punching machine;
then printing heating electrodes, insulating layers, reaction electrodes, electrode wires, electrode wire insulators, protective layers and cutting wires;
then the processed casting sheet meeting the requirements is subjected to lamination treatment, and then isostatic pressing is carried out in warm water isostatic pressing, wherein the temperature of the warm water is 65-80 ℃, and the pressure is 15-35 MPa. And then cutting the bar block subjected to warm water isostatic pressing treatment into single sensor chips according to the designed cutting line. And finally, carrying out glue removal and sintering on the sensor chip according to a certain program to form the ceramic chip. After the chip is assembled and matched with the controller, the testing function of oxygen and NOx gas can be performed, the testing precision is +/-5% within 500ppm, and the testing precision is +/-10% within 100 ppm.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. The casting slurry of the water-based casting film belt for the nitrogen-oxygen sensor is characterized by comprising zirconia ceramic powder, a water-based acrylic acid adhesive, a high-molecular comb-type dispersing agent, a plasticizer DOP dioctyl phthalate, a defoaming agent and deionized water.
2. The casting slurry of the water-based casting film belt for the oxynitride sensor according to claim 1, wherein the mass fraction of the zirconia ceramic powder is 55-70%, the mass fraction of the water-based acrylic adhesive is 16-20%, the mass fraction of the polymeric comb-type dispersant is 0.5-2%, the mass fraction of the plasticizer DOP dioctyl phthalate is 2-4%, the mass fraction of the defoaming agent is 0.5-1.5%, and the balance is deionized water.
3. A casting dope of a water-based casting film tape for a nitroxide sensor according to claim 1 or 2, characterized in that said aqueous acrylic binder solution is prepared by: weighing 60-80% of deionized water, placing the deionized water in a water bath, heating the deionized water to 70-90 ℃, adding 20-40% of water-based acrylic acid adhesive into a beaker filled with 60-80% of deionized water, and simultaneously carrying out magnetic stirring at the speed of 100-300 r/min until the glue is completely dissolved to form uniform colloid.
4. A casting slurry for a water based casting film tape for a nitrogen oxygen sensor according to claim 3, wherein 30% of water based acrylic binder is added to deionized water charged with 70%.
5. A cast slurry of a water-based cast film strip for a nitroxide sensor of claim 3, wherein the temperature in the water bath is heated to 80 ℃ at a speed of 200 rpm.
6. A preparation method of a water-based tape casting film belt for a nitrogen-oxygen sensor is characterized in that,
ball-milling and uniformly mixing deionized water and a dispersing agent for 15-45 min at a ball-milling speed of 60-100 r/min, adding zirconium dioxide powder into a ball-milling tank for 16-32 h at a ball-milling speed of 60-100 r/min to prepare ceramic slurry;
testing the pH value of the slurry by using a pH agent, adding oxalic acid if the pH value is more than 7, adding ammonia water if the pH value is less than 7, adding the ammonia water by using a dropper, stirring by using a glass rod after the addition is finished, and then testing the pH value by using the pH agent until the pH value is within the range of 7 +/-0.5;
adding water-based acrylic acid adhesive aqueous solution and dioctyl phthalate into the ceramic slurry, carrying out ball milling for 3-6 h to prepare casting slurry, then adding a defoaming agent, testing the viscosity of the slurry, finally pouring out the slurry, and carrying out vacuum defoaming treatment.
7. The method for preparing a water-based casting film belt for a nitrogen-oxygen sensor according to claim 6, wherein the casting slurry after vacuum defoamation treatment is put into a slurry tank of a film belt casting machine, the height of a knife is adjusted to 200-500 microns, the speed of the film belt is adjusted to 0.4-0.8 m/min, the drying temperature is set to 45-65 ℃, an air exhaust device is started for casting, and the cast film is cut.
8. The preparation method of the water-based tape casting membrane for the nitrogen-oxygen sensor, according to claim 6, is characterized in that deionized water and a dispersing agent are uniformly mixed in a ball-milling mode, the ball-milling time is 30min, the ball-milling speed is 80 r/min, zirconium dioxide powder is added into a ball-milling tank, the ball-milling time is 24h, and the ball-milling speed is 80 r/min, so that ceramic slurry is prepared.
9. The method of claim 6, wherein an aqueous acrylic binder solution and dioctyl phthalate are added to the ceramic slurry and ball-milled for 6 hours to produce a casting slurry.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269977A (en) * | 2008-05-04 | 2008-09-24 | 景德镇陶瓷学院 | Method for preparing ceramic sheet with composite caking agent series water-based cast |
| US20110198785A1 (en) * | 2008-10-31 | 2011-08-18 | Lanrik Kester | Methods and Appartus for Casting Ceramic Sheets |
| CN103056958A (en) * | 2012-12-29 | 2013-04-24 | 贵州振华红云电子有限公司 | Method for preparing piezoelectric ceramic piece green compact by using aqueous tape casting |
| CN103951421A (en) * | 2014-04-25 | 2014-07-30 | 东风电子科技股份有限公司 | Casting slurry and method for preparing zirconia substrate for NOx sensor by using same |
| CN105541323A (en) * | 2015-12-11 | 2016-05-04 | 广东风华高新科技股份有限公司 | Yttrium stabilized zirconia slurry and preparation method thereof, and preparation method of yttrium stabilized zirconia thin film |
| CN109449354A (en) * | 2018-10-25 | 2019-03-08 | 东莞东阳光科研发有限公司 | Ceramic slurry, Ceramic Composite diaphragm and lithium ion battery |
| CN111087239A (en) * | 2019-12-10 | 2020-05-01 | 神华新能源有限责任公司 | Water-based tape casting slurry, electrolyte film, preparation method and application thereof |
| CN114933476A (en) * | 2022-06-10 | 2022-08-23 | 北京智感度衡科技有限公司 | Zirconia green ceramic chip for nitrogen-oxygen sensor and preparation method thereof |
-
2022
- 2022-10-08 CN CN202211225550.4A patent/CN115838284A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269977A (en) * | 2008-05-04 | 2008-09-24 | 景德镇陶瓷学院 | Method for preparing ceramic sheet with composite caking agent series water-based cast |
| US20110198785A1 (en) * | 2008-10-31 | 2011-08-18 | Lanrik Kester | Methods and Appartus for Casting Ceramic Sheets |
| CN103056958A (en) * | 2012-12-29 | 2013-04-24 | 贵州振华红云电子有限公司 | Method for preparing piezoelectric ceramic piece green compact by using aqueous tape casting |
| CN103951421A (en) * | 2014-04-25 | 2014-07-30 | 东风电子科技股份有限公司 | Casting slurry and method for preparing zirconia substrate for NOx sensor by using same |
| CN105541323A (en) * | 2015-12-11 | 2016-05-04 | 广东风华高新科技股份有限公司 | Yttrium stabilized zirconia slurry and preparation method thereof, and preparation method of yttrium stabilized zirconia thin film |
| CN109449354A (en) * | 2018-10-25 | 2019-03-08 | 东莞东阳光科研发有限公司 | Ceramic slurry, Ceramic Composite diaphragm and lithium ion battery |
| CN111087239A (en) * | 2019-12-10 | 2020-05-01 | 神华新能源有限责任公司 | Water-based tape casting slurry, electrolyte film, preparation method and application thereof |
| CN114933476A (en) * | 2022-06-10 | 2022-08-23 | 北京智感度衡科技有限公司 | Zirconia green ceramic chip for nitrogen-oxygen sensor and preparation method thereof |
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