CN105084905B - A kind of inner container of electric cooker of composite ceramic material and preparation thereof - Google Patents
A kind of inner container of electric cooker of composite ceramic material and preparation thereof Download PDFInfo
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Abstract
This application discloses the inner container of electric cooker of a kind of composite ceramic material and preparation thereof, composite ceramic material is prepared by each component of following weight portion: brium carbonate 3～8 parts, 20～35 parts of calcite, Kaolin 5～10 parts, silicon powder 35～55 parts, potassium nitrate 3～8 parts, 10～15 parts of paraffin, soda 3～8 parts, boric acid 7～8 parts, 11～15 parts of quartz, aluminium nitride powder 50～75 parts, yittrium oxide 2～3 parts and lanthana 3～5 parts; Aluminium nitride powder is to adopt aluminium sesquioxide powder as aluminum source and hydrocarbon black powder reaction generation at 1500 DEG C～1700 DEG C in the nitrogen atmosphere of flowing; Course of reaction adds calcium oxide as catalyst, after having reacted, in the dry air of 700 DEG C～800 DEG C, carry out carbonization treatment; Cation impurity mass content in this aluminium sesquioxide powder is less than or equal to 0.02%, and the mass content of silicon and iron tramp is respectively smaller than 0.001%; The particle mean size of hydrocarbon black powder is 35-40 nanometer, and specific surface area is less than or equal to 90 meters squared per gram.
Description
Technical field
The application relates to the inner container of electric cooker of a kind of composite ceramic material and preparation thereof, belongs to electrical household appliance and ceramic material interleaving techniques field.
Background technology
Inner bag is the vitals that the household electrical appliance such as electric cooker are indispensable, but traditional inner bag thermal efficiency is low, and service life is short, is not suitable for the demand of modern appliances development. The inner container of electric cooker of production and sales on the market typically uses what the materials such as aluminum, ferrum, rustless steel were made at present, but adopt its surface of inner container of electric cooker that these materials are worked it out will carry out surface treatment and spraying, between when deployed long, surface spraying layer will come off and fade, so both unhygienic also unsightly, do not meet society people to Product Green environmental protection and healthy requirement.
Ceramic liner burns refining through the high temperature of degree more than 1,300, has stable thermal protection performance; Its advantage is in that: ceramic liner has environmental protection, pollution-free, the mineral function that keeps original fresh water that human body is useful, is easily secondary polluted thus being not result in the water capacity, simultaneously without producing harmful heavy metal rust water.
Tao Jing inner bag is the new technique being applied to the household electrical appliance such as electric cooker, " Tao Jing " technology has captured fusing point in conventional ceramic surface treatment technology, bi-material combines the technical barriers such as difficulty, material are not fitted together to, make inner container of electric cooker surface successfully adhere to last layer ceramic material, also utilize the natural non-adhesion behavior of ceramic material, scratch resistant wearability and the Far-infrared Heating performance improvement performance of traditional inner bag simultaneously.Owing to applying the inner bag ceramic surface treatment technology of this initiative, electric cooker enhances the performance of Far-infrared Heating, and its thermal efficiency cooked more is above traditional ordinary rigid inner bag 3～4 times. Meanwhile, the precious metal ion in " Tao Jing " inner bag crystal can also suppress to be mixed in pathogenic bacteria in food automatically, persistently, effectively, makes cooking food fresh-keeping more lasting, also much cleaner; But Tao Jing inner bag there is also some inferior positions, the service life of Tao Jing inner bag and security performance is drastically influence as oxidation resistance is poor, additionally electric cooker with ceramic liner on the market, heating is slow, thermal conductivity is low, linear expansion coefficient does not mate with inner container of electric cooker miscellaneous part, heat transfer inequality, often boils the problems such as uncooked rice; Therefore, a kind of heat transfer efficiency of research is high, and energy-saving and cost-reducing, the ceramic liner of long service life is significantly; The present invention, just from this angle, provides a kind of composite ceramic material with high thermal conductivity for inner bag manufacture and the ceramic liner prepared by this composite ceramic material.
Summary of the invention
The purpose of the application is in that to solve the problems referred to above, it is provided that the inner container of electric cooker of a kind of composite ceramic material and preparation thereof.
Composite ceramic material described herein is prepared by each component of following weight portion: brium carbonate 3～8 parts, 20～35 parts of calcite, Kaolin 5～10 parts, silicon powder 35～55 parts, potassium nitrate 3～8 parts, 10～15 parts of paraffin, soda 3～8 parts, boric acid 7～8 parts, 11～15 parts of quartz, aluminium nitride powder 50～75 parts, yittrium oxide 2～3 parts and lanthana 3～5 parts;
Wherein said aluminium nitride powder is to adopt aluminium sesquioxide powder as aluminum source, is mixed through ball milling with hydrocarbon black powder by aluminium sesquioxide powder, reaction generation at 1500 DEG C～1700 DEG C in the nitrogen atmosphere of flowing; Course of reaction adds calcium oxide as catalyst, after having reacted, in the dry air of 700 DEG C～800 DEG C, carry out carbonization treatment; Cation impurity mass content in this aluminium sesquioxide powder is less than or equal to 0.02%, and wherein the mass content of silicon and iron tramp is respectively smaller than 0.001%; The particle mean size of described hydrocarbon black powder is 35-40 nanometer, and specific surface area is less than or equal to 90 meters squared per gram;
The preparation method of described composite ceramic material comprises the steps: that ratio weighs brium carbonate, calcite, Kaolin, silicon powder, potassium nitrate, paraffin, soda, boric acid, quartz, aluminium nitride powder, yittrium oxide and lanthana by weight, by ready raw material through batch mixer mix homogeneously, the raw material of mix homogeneously is filled in model, from single shaft direction pressurized, heated, it is added to more than 5GPa, heating temperatures to more than 1700 DEG C, the pressurized, heated time controls between 120 minutes to 140 minutes; Preparation process is first pressurizeed, rear intensification, preparation starts latter 3 minutes pressure and is increased to required pressure, rate of pressure rise is at more than 30MPa/s, after reaching required pressure, quickly heat up to more than 1700 DEG C, be incubated 50-100 minute, then pressure was down to normal pressure in 2 minutes, and temperature is down to room temperature with the speed of 260 DEG C/min.
Inventor is proved by performance test, present invention composite ceramic material described above is better than the existing material for making inner bag in oxidation resistance and thermal diffusion performance, performance particularly in thermal conductivity and linear expansion coefficient aspect has bigger lifting than the existing material for making inner bag, wherein confirm according to above-mentioned test result, the present invention preferably embodiment is: a kind of composite ceramic material, it is prepared by each component of following weight portion: brium carbonate 8 parts, 35 parts of calcite, Kaolin 10 parts, silicon powder 55 parts, potassium nitrate 8 parts, 15 parts of paraffin, soda 8 parts, boric acid 8 parts, 15 parts of quartz, aluminium nitride powder 75 parts, yittrium oxide 3 parts and lanthana 5 parts,
Wherein said aluminium nitride powder is to adopt aluminium sesquioxide powder as aluminum source, is mixed through ball milling with hydrocarbon black powder by aluminium sesquioxide powder, reaction generation at 1700 DEG C in the nitrogen atmosphere of flowing; Course of reaction adds calcium oxide as catalyst, in the dry air of 800 DEG C, after having reacted, carry out carbonization treatment; Cation impurity mass content in this aluminium sesquioxide powder is less than or equal to 0.02%, and wherein the mass content of silicon and iron tramp is respectively smaller than 0.001%; The particle mean size of described hydrocarbon black powder is 40 nanometers, and specific surface area is less than or equal to 90 meters squared per gram;
The preparation method of described composite ceramic material comprises the steps: that ratio weighs brium carbonate, calcite, Kaolin, silicon powder, potassium nitrate, paraffin, soda, boric acid, quartz, aluminium nitride powder, yittrium oxide and lanthana by weight, by ready raw material through batch mixer mix homogeneously, the raw material of mix homogeneously is filled in model, from single shaft direction pressurized, heated, it is added to more than 5GPa, heating temperatures to more than 1700 DEG C, the pressurized, heated time controls at 140 minutes; Preparation process is first pressurizeed, rear intensification, preparation starts latter 3 minutes pressure and is increased to required pressure, rate of pressure rise is at 30MPa/s, after reaching required pressure, quickly heat up to 1700 DEG C, be incubated 100 minutes, then pressure was down to normal pressure in 2 minutes, and temperature is down to room temperature with the speed of 260 DEG C/min.
The present invention another preferably embodiment be: a kind of composite ceramic material, it is prepared by each component of following weight portion: brium carbonate 3 parts, 20 parts of calcite, Kaolin 5 parts, silicon powder 35 parts, potassium nitrate 3 parts, 10 parts of paraffin, soda 3 parts, boric acid 7 parts, 11 parts of quartz, aluminium nitride powder 50 parts, yittrium oxide 2 parts and lanthana 3 parts;
Wherein said aluminium nitride powder is to adopt aluminium sesquioxide powder as aluminum source, is mixed through ball milling with hydrocarbon black powder by aluminium sesquioxide powder, reaction generation at 1500 DEG C in the nitrogen atmosphere of flowing; Course of reaction adds calcium oxide as catalyst, in the dry air of 700 DEG C, after having reacted, carry out carbonization treatment; Cation impurity mass content in this aluminium sesquioxide powder is less than or equal to 0.02%, and wherein the mass content of silicon and iron tramp is respectively smaller than 0.001%; The particle mean size of described hydrocarbon black powder is 35 nanometers, and specific surface area is less than or equal to 90 meters squared per gram;
The preparation method of described composite ceramic material comprises the steps: that ratio weighs brium carbonate, calcite, Kaolin, silicon powder, potassium nitrate, paraffin, soda, boric acid, quartz, aluminium nitride powder, yittrium oxide and lanthana by weight, by ready raw material through batch mixer mix homogeneously, the raw material of mix homogeneously is filled in model, from single shaft direction pressurized, heated, it is added to more than 5GPa, heating temperatures to more than 1700 DEG C, the pressurized, heated time controls at 120 minutes; Preparation process is first pressurizeed, rear intensification, preparation starts latter 3 minutes pressure and is increased to required pressure, rate of pressure rise is at more than 30MPa/s, after reaching required pressure, quickly heat up to more than 1700 DEG C, be incubated 50 minutes, then pressure was down to normal pressure in 2 minutes, and temperature is down to room temperature with the speed of 260 DEG C/min.
The another preferably embodiment of the present invention is: a kind of composite ceramic material, and it is prepared by each component of following weight portion: brium carbonate 5 parts, 30 parts of calcite, Kaolin 8 parts, silicon powder 45 parts, potassium nitrate 5 parts, 13 parts of paraffin, soda 5 parts, boric acid 8 parts, 13 parts of quartz, aluminium nitride powder 65 parts, yittrium oxide 3 parts and lanthana 4 parts;
Wherein said aluminium nitride powder is to adopt aluminium sesquioxide powder as aluminum source, is mixed through ball milling with hydrocarbon black powder by aluminium sesquioxide powder, reaction generation at 1600 DEG C in the nitrogen atmosphere of flowing; Course of reaction adds calcium oxide as catalyst, in the dry air of 750 DEG C, after having reacted, carry out carbonization treatment; Cation impurity mass content in this aluminium sesquioxide powder is less than or equal to 0.02%, and wherein the mass content of silicon and iron tramp is respectively smaller than 0.001%; The particle mean size of described hydrocarbon black powder is 37 nanometers, and specific surface area is less than or equal to 90 meters squared per gram;
The preparation method of described composite ceramic material comprises the steps: that ratio weighs brium carbonate, calcite, Kaolin, silicon powder, potassium nitrate, paraffin, soda, boric acid, quartz, aluminium nitride powder, yittrium oxide and lanthana by weight, by ready raw material through batch mixer mix homogeneously, the raw material of mix homogeneously is filled in model, from single shaft direction pressurized, heated, it is added to more than 5GPa, heating temperatures to more than 1700 DEG C, the pressurized, heated time controls at 130 minutes; Preparation process is first pressurizeed, rear intensification, preparation starts latter 3 minutes pressure and is increased to required pressure, rate of pressure rise is at more than 30MPa/s, after reaching required pressure, quickly heat up to more than 1700 DEG C, be incubated 80 minutes, then pressure was down to normal pressure in 2 minutes, and temperature is down to room temperature with the speed of 260 DEG C/min.
The two of the object of the invention are in that to protect a kind of inner container of electric cooker prepared by above-mentioned composite ceramic material; this inner container of electric cooker includes inner bag outer layer; inner bag middle level and inner bag internal layer; wherein said inner bag internal layer is prepared by above-mentioned composite ceramic material; inner bag middle level is metal level, and inner bag outer layer is conventional ceramic layer. Wherein said metal level and conventional ceramic layer are the material that in prior art, be applied to inner bag manufactures, and this is readily available for those skilled in the art, and its preparation method is also well-known to those skilled in the art. It is experimentally confirmed that the inner bag internal layer that composite ceramic material of the present invention prepares has the good compatibility with metal level of the prior art and conventional ceramic layer.
Compared with prior art, technical scheme provides the benefit that:
The composite ceramic material of the application not only has good thermal diffusivity, and heat conduction efficiency is high, dissipation of heat excellent performance, and thermal conductivity is high, linear expansion coefficient matches with metal level and conventional ceramic layer, adopts the inner bag of material of the present invention to be not easily burned, and energy loss is little. Simultaneous oxidation weightening finish is little, this shows, composite ceramic material of the present invention after being used for preparing inner bag not only oxidation resistent susceptibility be greatly enhanced relative to existing ceramic material, improve the service life of inner bag, more it is prevented from or delays the fragility increase that inner bag oxidation in use causes, prevent interior gallbladder break, improve the security performance that inner bag uses.
Detailed description of the invention
Technical scheme in the application will be clearly and completely described below, it is clear that described embodiment is only a part of embodiment of the application, rather than whole embodiments. Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art obtain under the premise not making creative work, broadly fall into the scope of the application protection.
1 one kinds of composite ceramic materials of embodiment and the inner container of electric cooker prepared thereof
A kind of composite ceramic material, is prepared by each component of following weight portion: brium carbonate 8 parts, 35 parts of calcite, Kaolin 10 parts, silicon powder 55 parts, potassium nitrate 8 parts, 15 parts of paraffin, soda 8 parts, boric acid 8 parts, 15 parts of quartz, aluminium nitride powder 75 parts, yittrium oxide (Y2O3) 3 parts and lanthana (La2O3) 5 parts;
Wherein said aluminium nitride powder is to adopt aluminium sesquioxide powder as aluminum source, is mixed through ball milling with hydrocarbon black powder by aluminium sesquioxide powder, reaction generation at 1700 DEG C in the nitrogen atmosphere of flowing; Course of reaction adds calcium oxide (CaO) as catalyst, in the dry air of 800 DEG C, after having reacted, carry out carbonization treatment; Cation impurity mass content in this aluminium sesquioxide powder is less than or equal to 0.02%, and wherein the mass content of silicon and iron tramp is respectively smaller than 0.001%; The particle mean size of described hydrocarbon black powder is 40 nanometers, and specific surface area is less than or equal to 90 meters squared per gram;
The preparation method of described composite ceramic material comprises the steps: that ratio weighs brium carbonate, calcite, Kaolin, silicon powder, potassium nitrate, paraffin, soda, boric acid, quartz, aluminium nitride powder, yittrium oxide and lanthana by weight, by ready raw material through batch mixer mix homogeneously, the raw material of mix homogeneously is filled in model, from single shaft direction pressurized, heated, it is added to more than 5GPa, heating temperatures to more than 1700 DEG C, the pressurized, heated time controls at 140 minutes; Preparation process is first pressurizeed, rear intensification, preparation starts latter 3 minutes pressure and is increased to required pressure, rate of pressure rise is at 30MPa/s, after reaching required pressure, quickly heat up to 1700 DEG C, be incubated 100 minutes, then pressure was down to normal pressure in 2 minutes, and temperature is down to room temperature with the speed of 260 DEG C/min.
A kind of inner container of electric cooker prepared by above-mentioned composite ceramic material, this inner container of electric cooker includes inner bag outer layer, inner bag middle level and inner bag internal layer, and wherein said inner bag internal layer is prepared by above-mentioned composite ceramic material, inner bag middle level is metal level, and inner bag outer layer is conventional ceramic layer.
2 one kinds of composite ceramic materials of embodiment and the inner container of electric cooker prepared thereof
A kind of composite ceramic material, is prepared by each component of following weight portion: brium carbonate 3 parts, 20 parts of calcite, Kaolin 5 parts, silicon powder 35 parts, potassium nitrate 3 parts, 10 parts of paraffin, soda 3 parts, boric acid 7 parts, 11 parts of quartz, aluminium nitride powder 50 parts, yittrium oxide 2 parts and lanthana 3 parts;
Wherein said aluminium nitride powder is to adopt aluminium sesquioxide powder as aluminum source, is mixed through ball milling with hydrocarbon black powder by aluminium sesquioxide powder, reaction generation at 1500 DEG C in the nitrogen atmosphere of flowing; Course of reaction adds calcium oxide as catalyst, in the dry air of 700 DEG C, after having reacted, carry out carbonization treatment; Cation impurity mass content in this aluminium sesquioxide powder is less than or equal to 0.02%, and wherein the mass content of silicon and iron tramp is respectively smaller than 0.001%; The particle mean size of described hydrocarbon black powder is 35 nanometers, and specific surface area is less than or equal to 90 meters squared per gram;
The preparation method of described composite ceramic material comprises the steps: that ratio weighs brium carbonate, calcite, Kaolin, silicon powder, potassium nitrate, paraffin by weight, soda, boric acid, quartz, aluminium nitride powder, yittrium oxide and lanthana, by ready raw material through batch mixer mix homogeneously, be filled in model by the raw material of mix homogeneously, from single shaft direction pressurized, heated, it is added to more than 5GPa, heating temperatures to more than 1700 DEG C, the pressurized, heated time controls at 120 minutes; Preparation process is first pressurizeed, rear intensification, preparation starts latter 3 minutes pressure and is increased to required pressure, rate of pressure rise is at more than 30MPa/s, after reaching required pressure, quickly heat up to more than 1700 DEG C, be incubated 50 minutes, then pressure was down to normal pressure in 2 minutes, and temperature is down to room temperature with the speed of 260 DEG C/min.
A kind of inner container of electric cooker prepared by above-mentioned composite ceramic material, this inner container of electric cooker includes inner bag outer layer, inner bag middle level and inner bag internal layer, and wherein said inner bag internal layer is prepared by above-mentioned composite ceramic material, inner bag middle level is metal level, and inner bag outer layer is conventional ceramic layer.
3 one kinds of composite ceramic materials of embodiment and the inner container of electric cooker prepared thereof
A kind of composite ceramic material, is prepared by each component of following weight portion:
Brium carbonate 5 parts, 30 parts of calcite, Kaolin 8 parts, silicon powder 45 parts, potassium nitrate 5 parts, 13 parts of paraffin, soda 5 parts, boric acid 8 parts, 13 parts of quartz, aluminium nitride powder 65 parts, yittrium oxide 3 parts and lanthana 4 parts;
Wherein said aluminium nitride powder is to adopt aluminium sesquioxide powder as aluminum source, is mixed through ball milling with hydrocarbon black powder by aluminium sesquioxide powder, reaction generation at 1600 DEG C in the nitrogen atmosphere of flowing; Course of reaction adds calcium oxide as catalyst, in the dry air of 750 DEG C, after having reacted, carry out carbonization treatment; Cation impurity mass content in this aluminium sesquioxide powder is less than or equal to 0.02%, and wherein the mass content of silicon and iron tramp is respectively smaller than 0.001%; The particle mean size of described hydrocarbon black powder is 37 nanometers, and specific surface area is less than or equal to 90 meters squared per gram;
The preparation method of described composite ceramic material comprises the steps: that ratio weighs brium carbonate, calcite, Kaolin, silicon powder, potassium nitrate, paraffin by weight, soda, boric acid, quartz, aluminium nitride powder, yittrium oxide and lanthana, by ready raw material through batch mixer mix homogeneously, be filled in model by the raw material of mix homogeneously, from single shaft direction pressurized, heated, it is added to more than 5GPa, heating temperatures to more than 1700 DEG C, the pressurized, heated time controls at 130 minutes; Preparation process is first pressurizeed, rear intensification, preparation starts latter 3 minutes pressure and is increased to required pressure, rate of pressure rise is at more than 30MPa/s, after reaching required pressure, quickly heat up to more than 1700 DEG C, be incubated 80 minutes, then pressure was down to normal pressure in 2 minutes, and temperature is down to room temperature with the speed of 260 DEG C/min.
A kind of inner container of electric cooker prepared by above-mentioned composite ceramic material, this inner container of electric cooker includes inner bag outer layer, inner bag middle level and inner bag internal layer, and wherein said inner bag internal layer is prepared by above-mentioned composite ceramic material, inner bag middle level is metal level, and inner bag outer layer is conventional ceramic layer.
Above-described embodiment 1-3 is the preferred implementation of the composite ceramic material of the thermal diffusivity that disclosure satisfy that inner container of electric cooker that inventor finds in process of the test, thermal conductivity and linear expansion coefficient and the requirement of oxidation resistent susceptibility entirety. Process of the test finds, the overall performance of composite ceramic material can be had adverse effect on by constituent content or technological parameter beyond certain numerical value scope, inventor finds through substantial amounts of test, except above-mentioned preferred implementation, disclosure satisfy that the constituent content of the composite ceramic material of the thermal diffusivity of inner container of electric cooker, thermal conductivity and linear expansion coefficient and the requirement of oxidation resistent susceptibility entirety and technological parameter should meet following requirement:
Described composite ceramic material is prepared by each component of following weight portion: brium carbonate 3～8 parts, 20～35 parts of calcite, Kaolin 5～10 parts, silicon powder 35～55 parts, potassium nitrate 3～8 parts, 10～15 parts of paraffin, soda 3～8 parts, boric acid 7～8 parts, 11～15 parts of quartz, aluminium nitride powder 50～75 parts, yittrium oxide 2～3 parts and lanthana 3～5 parts;
Wherein said aluminium nitride powder is to adopt aluminium sesquioxide powder as aluminum source, is mixed through ball milling with hydrocarbon black powder by aluminium sesquioxide powder, reaction generation at 1500 DEG C～1700 DEG C in the nitrogen atmosphere of flowing; Course of reaction adds calcium oxide as catalyst, after having reacted, in the dry air of 700 DEG C～800 DEG C, carry out carbonization treatment; Cation impurity mass content in this aluminium sesquioxide powder is less than or equal to 0.02%, and wherein the mass content of silicon and iron tramp is respectively smaller than 0.001%; The particle mean size of described hydrocarbon black powder is 35-40 nanometer, and specific surface area is less than or equal to 90 meters squared per gram;
The preparation method of described composite ceramic material comprises the steps: that ratio weighs brium carbonate, calcite, Kaolin, silicon powder, potassium nitrate, paraffin by weight, soda, boric acid, quartz, aluminium nitride powder, yittrium oxide and lanthana, by ready raw material through batch mixer mix homogeneously, the raw material of mix homogeneously is filled in model, from single shaft direction pressurized, heated, it is added to more than 5GPa, heating temperatures to more than 1700 DEG C, the pressurized, heated time controls between 120 minutes to 140 minutes; Preparation process is first pressurizeed, rear intensification, preparation starts latter 3 minutes pressure and is increased to required pressure, rate of pressure rise is at more than 30MPa/s, after reaching required pressure, quickly heat up to more than 1700 DEG C, be incubated 50-100 minute, then pressure was down to normal pressure in 2 minutes, and temperature is down to room temperature with the speed of 260 DEG C/min.
In order to verify the overall performance of the composite ceramic material of the present invention, inventor have chosen three groups of Comparative Examples objects as a comparison, adopt identical method and test condition to test the composite ceramic material of embodiments of the invention 1-3 and the pottery of three groups of Comparative Examples or the thermal conductivity of inner bag and linear expansion coefficient, be described below in detail the data result of contrast.
Pottery obtained by embodiment 1 in Comparative Examples 1 Chinese invention patent application CN103073271A
A kind of High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic, it includes the component of following parts by weight: aluminium sesquioxide 90kg, calcium carbonate 2kg, Kaolin 1kg, silicon powder 1.2kg, chromium oxide 0.2kg, paraffin 10kg, oleic acid 0.2kg
The preparation method of above-mentioned High-abrasion-resisthigh-temperature-resceramic high-temperature-resceramic ceramic comprises the steps: aluminium sesquioxide, calcium carbonate, Kaolin, silicon powder by carrying out ball milling, batch mixing after formula ratio dispensing, being crushed to 300～400 orders; By the paraffin of formula ratio, oleic acid heating to 110～130 DEG C to melting; The paraffin of the fusing being added thereto in step 2 after being anhydrated by the raw material in step 1 and oleic acid, adopt injection moulding at 0.5MP, 60～70 DEG C of condition compacted unders after mix homogeneously; De-waxing, burn till and get product.
Glass inner bag in Comparative Examples 2 Chinese invention patent application CN102178463A
A kind of electric cooker glass inner bag, with silicon dioxide for base stock, is equipped with aluminium oxide, sodium oxide, lithium oxide and boron oxide composition, and the preparation method of electricity metal plate pot glass inner bag is:
A: preparing silicon dioxide is 78%, and aluminium oxide is 3%, and sodium oxide is 3.9%, and lithium oxide is 0.1%, and boron oxide is 15%.
B: by ready raw material through batch mixer mix homogeneously;
C: the raw material of mix homogeneously sent in melting tank and heat to 1650 DEG C of formation vitreous humours;
D: vitreous humour is sent into and carries out clarification and homogenizing process in depositing reservoir;
E: the vitreous humour after clarification being processed with homogenizing is sent in moulding press mould and made finished product.
The composite ceramic material of embodiment 1 in Comparative Examples 3 Chinese invention patent application CN103922711A
A kind of composite ceramic material manufactured for inner bag, it is prepared by each component of following weight portion:
Brium carbonate 3 parts, copper oxide 0.01 part, cobalt oxide 0.005 part, zinc oxide 5 parts, aluminium oxide are 1 part, sodium oxide is 3 parts, lithium oxide is 0.1 part, boron oxide is 1 part, 20 parts of calcite, Kaolin 5 parts, aluminium oxide 3 parts, silicon powder 35 parts, potassium nitrate 3 parts, 10 parts of paraffin, soda 3 parts and antimony oxide 0.5 part.
Following table lists the composite ceramic material of embodiments of the invention 1-3 and the contrast test data result of the pottery of three groups of Comparative Examples or the thermal conductivity of inner bag and linear expansion coefficient.
Be can be seen that by the correction data of upper table, the material of the thermal conductivity of the composite ceramic material of the present invention and Comparative Examples 1-3 increases significantly, by each sample X-ray diffraction (XRD) participating in contrast is measured, and according to bragg's formula and principle counting lattice constant, adopt Cu target, Kα1Ray, Ni filter plate, tube voltage 40KV, tube current 40mA, slit sizes DS=1 °, RD=0.15, SS=1 °, scanning speed is 1 °/min. Adopt electron microprobe analysis instrument (EPMA, model JE-OLJXA-8200) sample is carried out morphology analysis, utilize the micro-spy instrument (WavelengthDepressiveSpectroscope of wavelength dispersion formula electronics of electron microprobe analysis instrument, WDS) sample is carried out elemental composition analysis, adopt RM1000R type laser Raman spectrometer simultaneously, choose the argon ion laser (energy is 100mW) that optical maser wavelength is 514.5NM and sample is scanned. Test result shows, exists almost without free electron in the composite ceramic material of the present invention, and the conduction of heat energy mainly phonon carries out with forms of radiation as carrier, and its thermal conductivity is mainly determined by mean free path of phonons. Additionally, lattice vibration in the composite ceramic material of the present invention is humorous property, collision between phonon there's almost no, and this makes the mean free path of phonon can reach significantly high level, so that the thermal conductivity of the composite ceramic material of the present invention is significantly improved. Also just because of the lattice structure that the composite ceramic material of the present invention is unique, the material making its linear expansion coefficient and Comparative Examples 1-3 has significant difference, closer to the linear expansion coefficient of metal material, better with the expansion coefficient mismatching degree of metal inner tube conventional in electric cooker.
In sum, being the embodiment of the present application content, and obviously presently filed embodiment is not limited to that, it according to different application environment, can utilize the functional realiey corresponding demand of the application.
Claims (5)
1. a composite ceramic material, it is characterised in that prepared by each component of following weight portion:
Brium carbonate 3～8 parts, 20～35 parts of calcite, Kaolin 5～10 parts, silicon powder 35～55 parts, potassium nitrate 3～8 parts, 10～15 parts of paraffin, soda 3～8 parts, boric acid 7～8 parts, 11～15 parts of quartz, aluminium nitride powder 50～75 parts, yittrium oxide 2～3 parts and lanthana 3～5 parts;
Wherein said aluminium nitride powder is to adopt aluminium sesquioxide powder as aluminum source, is mixed through ball milling with hydrocarbon black powder by aluminium sesquioxide powder, reaction generation at 1500 DEG C～1700 DEG C in the nitrogen atmosphere of flowing; Course of reaction adds calcium oxide as catalyst, after having reacted, in the dry air of 700 DEG C～800 DEG C, carry out carbonization treatment; Cation impurity mass content in this aluminium sesquioxide powder is less than or equal to 0.02%, and wherein the mass content of silicon and iron tramp is respectively smaller than 0.001%; The particle mean size of described hydrocarbon black powder is 35-40 nanometer, and specific surface area is less than or equal to 90 meters squared per gram;
The preparation method of described composite ceramic material comprises the steps: that ratio weighs brium carbonate, calcite, Kaolin, silicon powder, potassium nitrate, paraffin, soda, boric acid, quartz, aluminium nitride powder, yittrium oxide and lanthana by weight, by ready raw material through batch mixer mix homogeneously, the raw material of mix homogeneously is filled in model, from single shaft direction pressurized, heated, it is added to more than 5GPa, heating temperatures to more than 1700 DEG C, the pressurized, heated time controls between 120 minutes to 140 minutes;Preparation process is first pressurizeed, rear intensification, preparation starts latter 3 minutes pressure and is increased to required pressure, rate of pressure rise is at more than 30MPa/s, after reaching required pressure, quickly heat up to more than 1700 DEG C, be incubated 50-100 minute, then pressure was down to normal pressure in 2 minutes, and temperature is down to room temperature with the speed of 260 DEG C/min.
2. composite ceramic material according to claim 1, it is characterized in that, each component of following weight portion prepare: brium carbonate 8 parts, 35 parts of calcite, Kaolin 10 parts, silicon powder 55 parts, potassium nitrate 8 parts, 15 parts of paraffin, soda 8 parts, boric acid 8 parts, 15 parts of quartz, aluminium nitride powder 75 parts, yittrium oxide 3 parts and lanthana 5 parts;
Wherein said aluminium nitride powder is to adopt aluminium sesquioxide powder as aluminum source, is mixed through ball milling with hydrocarbon black powder by aluminium sesquioxide powder, reaction generation at 1700 DEG C in the nitrogen atmosphere of flowing; Course of reaction adds calcium oxide as catalyst, in the dry air of 800 DEG C, after having reacted, carry out carbonization treatment; Cation impurity mass content in this aluminium sesquioxide powder is less than or equal to 0.02%, and wherein the mass content of silicon and iron tramp is respectively smaller than 0.001%; The particle mean size of described hydrocarbon black powder is 40 nanometers, and specific surface area is less than or equal to 90 meters squared per gram;
The preparation method of described composite ceramic material comprises the steps: that ratio weighs brium carbonate, calcite, Kaolin, silicon powder, potassium nitrate, paraffin, soda, boric acid, quartz, aluminium nitride powder, yittrium oxide and lanthana by weight, by ready raw material through batch mixer mix homogeneously, the raw material of mix homogeneously is filled in model, from single shaft direction pressurized, heated, it is added to more than 5GPa, heating temperatures to more than 1700 DEG C, the pressurized, heated time controls at 140 minutes; Preparation process is first pressurizeed, rear intensification, preparation starts latter 3 minutes pressure and is increased to required pressure, rate of pressure rise is at 30MPa/s, after reaching required pressure, quickly heat up to 1700 DEG C, be incubated 100 minutes, then pressure was down to normal pressure in 2 minutes, and temperature is down to room temperature with the speed of 260 DEG C/min.
3. composite ceramic material according to claim 1, it is characterized in that, each component of following weight portion prepare: brium carbonate 3 parts, 20 parts of calcite, Kaolin 5 parts, silicon powder 35 parts, potassium nitrate 3 parts, 10 parts of paraffin, soda 3 parts, boric acid 7 parts, 11 parts of quartz, aluminium nitride powder 50 parts, yittrium oxide 2 parts and lanthana 3 parts;
Wherein said aluminium nitride powder is to adopt aluminium sesquioxide powder as aluminum source, is mixed through ball milling with hydrocarbon black powder by aluminium sesquioxide powder, reaction generation at 1500 DEG C in the nitrogen atmosphere of flowing; Course of reaction adds calcium oxide as catalyst, in the dry air of 700 DEG C, after having reacted, carry out carbonization treatment; Cation impurity mass content in this aluminium sesquioxide powder is less than or equal to 0.02%, and wherein the mass content of silicon and iron tramp is respectively smaller than 0.001%; The particle mean size of described hydrocarbon black powder is 35 nanometers, and specific surface area is less than or equal to 90 meters squared per gram;
The preparation method of described composite ceramic material comprises the steps: that ratio weighs brium carbonate, calcite, Kaolin, silicon powder, potassium nitrate, paraffin, soda, boric acid, quartz, aluminium nitride powder, yittrium oxide and lanthana by weight, by ready raw material through batch mixer mix homogeneously, the raw material of mix homogeneously is filled in model, from single shaft direction pressurized, heated, it is added to more than 5GPa, heating temperatures to more than 1700 DEG C, the pressurized, heated time controls at 120 minutes;Preparation process is first pressurizeed, rear intensification, preparation starts latter 3 minutes pressure and is increased to required pressure, rate of pressure rise is at more than 30MPa/s, after reaching required pressure, quickly heat up to more than 1700 DEG C, be incubated 50 minutes, then pressure was down to normal pressure in 2 minutes, and temperature is down to room temperature with the speed of 260 DEG C/min.
4. composite ceramic material according to claim 1, it is characterized in that, each component of following weight portion prepare: brium carbonate 5 parts, 30 parts of calcite, Kaolin 8 parts, silicon powder 45 parts, potassium nitrate 5 parts, 13 parts of paraffin, soda 5 parts, boric acid 8 parts, 13 parts of quartz, aluminium nitride powder 65 parts, yittrium oxide 3 parts and lanthana 4 parts;
Wherein said aluminium nitride powder is to adopt aluminium sesquioxide powder as aluminum source, is mixed through ball milling with hydrocarbon black powder by aluminium sesquioxide powder, reaction generation at 1600 DEG C in the nitrogen atmosphere of flowing; Course of reaction adds calcium oxide as catalyst, in the dry air of 750 DEG C, after having reacted, carry out carbonization treatment; Cation impurity mass content in this aluminium sesquioxide powder is less than or equal to 0.02%, and wherein the mass content of silicon and iron tramp is respectively smaller than 0.001%; The particle mean size of described hydrocarbon black powder is 37 nanometers, and specific surface area is less than or equal to 90 meters squared per gram;
The preparation method of described composite ceramic material comprises the steps: that ratio weighs brium carbonate, calcite, Kaolin, silicon powder, potassium nitrate, paraffin, soda, boric acid, quartz, aluminium nitride powder, yittrium oxide and lanthana by weight, by ready raw material through batch mixer mix homogeneously, the raw material of mix homogeneously is filled in model, from single shaft direction pressurized, heated, it is added to more than 5GPa, heating temperatures to more than 1700 DEG C, the pressurized, heated time controls at 130 minutes; Preparation process is first pressurizeed, rear intensification, preparation starts latter 3 minutes pressure and is increased to required pressure, rate of pressure rise is at more than 30MPa/s, after reaching required pressure, quickly heat up to more than 1700 DEG C, be incubated 80 minutes, then pressure was down to normal pressure in 2 minutes, and temperature is down to room temperature with the speed of 260 DEG C/min.
5. the inner container of electric cooker that prepared by the composite ceramic material according to any one of claim 1-4, it is characterized in that, this inner container of electric cooker includes inner bag outer layer, inner bag middle level and inner bag internal layer, wherein said inner bag internal layer is prepared by above-mentioned composite ceramic material, inner bag middle level is metal level, and inner bag outer layer is conventional ceramic layer.
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| CN106278282A (en) * | 2016-08-18 | 2017-01-04 | 广东伊莱特电器有限公司 | The preparation technology of a kind of pottery and apply the IH inner container of electric cooker of this technique |
| CN106333609A (en) * | 2016-11-15 | 2017-01-18 | 河源市源日通能源有限公司 | Inner container of electric cooker and manufacturing method thereof |
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| CN107129306A (en) * | 2017-05-04 | 2017-09-05 | 钦州学院 | The preparation method of the inner bag of electric cooker ceramics |
| CN107698938A (en) * | 2017-09-29 | 2018-02-16 | 广东华源电器有限公司 | A kind of health pig iron inner bag of simulated primitive ecology intelligent electric cooker and preparation method thereof |
| CN109592189B (en) * | 2017-09-30 | 2021-04-30 | 上海住邦电器有限公司 | Nano-silver negative ion bacteriostatic and bactericidal inner container enamel container |
| CN111018489A (en) * | 2019-12-16 | 2020-04-17 | 王安华 | Bone china material for non-stick cookers, application of bone china material, non-stick cookers and manufacturing method of non-stick cookers |
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