KR100846146B1 - High-strengthened heat-resistant colorful ceramic ware and glaze compositions - Google Patents

Abstract

The present invention is a holding composition for a multi-color high strength heat-resistant ceramic, the holding composition, 50 to 70% by weight of feldspar, talc 5 to 10% by weight, cordierite 3 to 5 based on the total weight of the holding composition Provided is a composition for multicolor high strength heat-resistant ceramics consisting of 3-5% by weight barium carbonate and 10-39% by weight clay + clay. In another aspect, the present invention is a glaze composition for a multi-color high-strength heat-resistant ceramic that is oiled after molding the product from the base material composition according to the present invention, and then baked at the first 1000 ± 50 ℃, the glaze composition is the whole of the glaze composition 40 to 60% by weight of coarse stone, 5 to 15% by weight of talc, 3 to 5% by weight of barium carbonate, 3 to 5% by weight of lithium carbonate, 5 to 10% by weight of zirconium and 20 to 30% by weight of ceresite It provides a glaze composition for a multicolor high strength heat-resistant ceramic consisting of.

Colorful, heat resistant, ceramic

Description

High-strengthened heat-resistant colorful ceramic ware and glaze compositions

1 shows the surface of the body composition according to the present invention fired without glazing.

Figure 2 shows the surface of the body composition according to the present invention fired by treatment with a glaze composition according to the present invention.

The present invention relates to a multi-color high-strength heat-resistant ceramic body and the glaze composition oiled therein, and because the body forming the body of the porcelain is magnetized to have a high strength of the porcelain absorption rate of less than 4% kitchen utensils like general ceramics Not only is it inconvenient to use, but it is also possible to give various colors to ceramics, which can meet the various aesthetic needs of consumers.

In general, the ceramic cooking vessel or roasting plate has high heat resistance and low thermal expansion and thermal shrinkage due to heating and cooling, so that it does not crack when cooking by heating or microwave oven.

Conventional heat-resistant ceramics are generally manufactured by firing a mixture of inorganic materials such as kaolin, clay, acid blue soil, petalite, etc. in a kiln at a high temperature of 1150 ° C to 1300 ° C.

After highly roasting the above-mentioned ceramics, the highly concentrated composite metal was mixed with a mixture of 90% germanium sol having a concentration of 0.5% normal, about 2% iron chloride, about 6% nickel chloride, about 1% cobalt chloride, and about 1% copper chloride. Soaked in solute solution, roasted at about 1240 ℃, or bakelite 57-77% by weight, talcum 2 to 8% by weight, 10 to 10% by weight of a mixture of calistone and limestone After applying a glaze containing 3% by weight of a mixture of silica, there was a method of roasting chaebol.

In the above manner, the glazing tends to occur in the glaze before the glaze is dried by applying the glaze as described above, and the food cracks on the surface of the porcelain during cooking due to the surface crack of the completed heat-resistant magnetic. There is not only a problem of foaming when boiling due to the inflow of detergent during washing, but also a weak strength because the thickness of the porcelain must be made thick in order to secure the required strength. There is a problem that the back is lowered. In addition, conventionally, since the base material is not white, it is not possible to use colorful glazes and only fixed black / green / chocolate glazes can be used to satisfy the rapidly changing kitchen environment and various aesthetic needs of consumers. There is a problem.

The present invention has been made to solve the problems of the prior art as described above, the present invention is extremely low absorption rate of the heat-resistant magnetic and prevent the glazing surface cracking of the heat-resistant magnetic during cooking, as well as by increasing the strength of the heat-resistant magnetic It is an object of the present invention to provide a multi-color high-strength heat-resistant ceramic body composition and a glaze composition oiled thereto, which can realize the weight reduction of ceramics due to the thinning of the thickness.

One configuration according to the present invention for achieving the above object, as a holding composition for a multi-color high-strength heat-resistant ceramic, the holding composition, 50 to 70% by weight of feldspar, based on the total weight of the holding composition, It consists of 5-10% by weight of talc, 3-5% by weight of cordierite 3-5% by weight of barium carbonate and 10-39% by weight of clay + clay. Another constitution according to the present invention is a glaze composition for a multicolor high strength heat-resistant ceramic which is oiled after molding a product from the base material composition according to the present invention, and after being baked at 1000 ± 50 ° C., wherein the glaze composition is Based on the total weight of the glaze composition, 40 to 60% by weight of feldspar, 5 to 15% by weight of talc, 3 to 5% by weight of barium carbonate, 3 to 5% by weight of lithium carbonate, 5 to 10% by weight of zirconium and ceresite 20 It consists of -30 weight%. Preferably, a color pigment may be further included.

 Here, the color pigment may be made of any one or more of red, orange, and blue series, by adjusting the content of the color pigments within the constituent range of the feldspar may produce a variety of white and other colors.

Example 1) In the case of white color, the composition of the glaze composition is 40 to 60% by weight, talc 5 to 15%, barium carbonate 3 to 5%, lithium carbonate 3 to 5%, zirconium 5 to No color pigment is added to the base glaze of 10% by weight and 20% by weight of ceresite.

Example 2) If you want to give a red color, the composition of the glaze composition is composed of 40 to 60% by weight of feldspar, 5 to 15% by weight of talc, 3 to 5% by weight of barium carbonate, 3 to 5% by weight of lithium carbonate, 5 to zirconium 10% by weight, ceresite 20 ~ 30% by weight, add red as a color pigment.

The present invention is to develop a white base so that the pigment of a variety of colors that were not seen in the conventional heat-resistant material by the pigments of various series, such as the red, orange blue series, which could not be applied in the heat-resistant body of the conventional colored series It is possible to see.

Example

Examples 1 to 20 relate to the base material composition according to the present invention, the optimum composition ratio of the white high strength heat-resistant ceramic body composition according to the present invention is 50 to 70% by weight of feldspar, 5 to 10% by weight of talc, cordierite 3 ~ 5 wt%, barium carbonate 3-5 wt%, and clay + clay 10-40 wt%. Table 1 shows the results of moldability, sintering, heat resistance and strength test results of the composition according to the composition of the composition, the optimum composition ratio of the high-strength heat-resistant ceramic body composition according to the invention, 50 to 70% by weight, talc 5 ~ 10% by weight, cordierite 3 ~ 5% by weight, barium carbonate 3 ~ 5% by weight, support material mixture of clay + clay 10 ~ 40% by weight, the product is excellent in both moldability, sinterability, heat resistance and strength It can be seen that the physical properties. The criteria for the test results in Table 1 are shown in Table 2.

Molding, Sintering, Heat Resistance, and Strength Test Results of Body Compositions According to Composition Changes Feldspar talc Cordierite Barium carbonate Clay + clay Experiment result Formability Sinterability Heat resistance burglar Comparative Example 1 45 7 4 4 40 amount amount fire amount Comparative Example 2 75 7 4 4 10 fire fire amount fire Comparative Example 3 60 4 4 4 28 amount fire amount fire Comparative Example 4 60 12 4 4 20 fire amount fire amount Comparative Example 5 60 7 2 4 27 amount fire amount fire Comparative Example 6 60 7 6 4 23 fire amount fire amount Comparative Example 7 60 7 4 2 27 amount fire amount fire Comparative Example 8 60 7 4 7 22 fire amount fire amount Comparative Example 9 71 10 5 5 9 fire fire amount fire Comparative Example 10 48 5 3 3 41 amount amount fire amount Example 1 51 8 5 4 32 amount amount amount amount Example 2 55 9 4 3 29 amount amount amount amount Example 3 56 6 3 5 30 amount amount amount amount Example 4 53 8 5 5 29 amount amount amount amount Example 5 51 7 3 3 36 amount amount amount amount Example 6 68 6 3 3 20 amount amount amount amount Example 7 62 7 4 4 23 amount amount amount amount Example 8 66 5 4 3 22 amount amount amount amount Example 9 56 8 5 5 26 amount amount amount amount Example 10 66 6 4 4 20 amount amount amount amount Example 11 52 9 3 4 32 amount amount amount amount Example 12 50 5 4 4 37 amount amount amount amount Example 13 61 5 3 5 26 amount amount amount amount Example 14 54 8 3 3 32 amount amount amount amount Example 15 50 5 3 3 39 amount amount amount amount Example 16 68 6 3 5 18 amount amount amount amount Example 17 70 9 5 4 12 amount amount amount amount Example 18 65 5 3 3 24 amount amount amount amount Example 19 67 6 4 5 18 amount amount amount amount Example 20 62 8 5 3 22 amount amount amount amount

* 'Yang': indicates good, 'Fire': indicates bad.

Table 1 Judgment criteria by required property Defective Good Formability Molding yield less than 90% Molding yield over 90% Sinterability Absorption more than 4% Absorption rate less than 4% Heat resistance Quench quench 450 ℃ crack Quenching quenching 450 ℃ burglar Less than 600Kg / cm ² 600Kg / cm ² or more

Lithium content of foliar was different for each product, but experimental feldspar was tested with a product of 4.3% lithium. At this time, feldspar increases the heat resistance of the body by lowering the coefficient of thermal expansion of the body. When it is less than 50%, it cannot be used as a ceramic having heat resistance. And when the feldspar is more than 70%, the state of poor conformity with the glaze is reduced, and the amount of clay and clay is reduced, so that the molding ability is reduced.

Talc increases the sinterability of the body to make it a stable body and increases the light transmittance. When it is less than 5%, the sintering is not good and cannot produce magnetic heat-resistant magnetic. And when more than 10%, the fire resistance of the body is lowered and the heat resistance is lowered.

Core Deerite has the property of improving sinterability while increasing the strength of the body. When less than 3%, the effect on strength is small and the sinterability is also poor. And more than 5% will affect your color.

Barium carbonate improves the sinterability and lowers the degree of ignition of the body so that it can be magnetized at an appropriate temperature. The magnetization eliminates the absorption rate, which improves the durability of the ceramic composition and prevents impurities from penetrating into the ceramic when the composition is used. When it is less than 3%, the degree of possession increases and the composition is not fully magnetized. And when it is more than 5%, the fire resistance of the body becomes low and heat resistance is inferior.

Clay and clay are good formability of heat-resistant magnet and make the basic body. Use good whiteness because it affects whiteness after firing. If it is less than 10%, it is difficult to form a heat-resistant ceramic. In addition, if the amount of clay is increased, good results can be expected in the molding process during production, but the heat resistance of the product is lowered, which leads to a deterioration of the quality of the product. And when more than 40% the base material sintering and heat resistance is lowered.

Examples 21 to 40 relate to the glaze composition according to the present invention, the optimal composition ratio of the glaze composition according to the present invention applied to the heat-resistant magnetic produced in the possession according to Examples 21 to 40 is 40 to 60% by weight of feldspar It consists of 5 to 15% by weight of talc, 3 to 5% by weight of barium carbonate, 3 to 5% by weight of lithium carbonate, 5 to 10% by weight of zirconium and 20 to 30% by weight of ceresite. Table 2 shows the results of the characteristics test of the glaze composition according to the composition change of the glaze composition, which is the optimum composition ratio of the glaze composition according to the present invention, 40 to 60% by weight, talc 5 to 15% by weight, barium carbonate 3 to 5 Based on the weight percent, lithium carbonate 3 to 5% by weight, zirconium 5 to 10% by weight, and ceresite 20 to 30% by weight, the surface of the glaze is good and has a coefficient of thermal expansion similar to that of the base composition according to the present invention. It shows no glaze cracks and excellent glaze properties. In addition, by mixing a suitable amount of a ceramic pigment having a variety of colors to the composition glaze can be made of a heat-resistant ceramic composition of a variety of colors. The criteria for the test results in Table 3 are shown in Table 4.

Property test result of glaze composition according to composition change of glaze composition Feldspar talc Lithium carbonate Barium carbonate zirconium Sherite Experiment result Smoothness Heat resistance Meltness Whiteness Physical state Melting Point Compatibility Crack castle Comparative Example 11 38 14 5 5 9 29 amount fire amount amount amount amount fire Comparative Example 12 61 6 3 3 7 20 fire amount fire fire fire fire amount Comparative Example 13 55 4 4 4 7 26 fire amount fire amount amount fire amount Comparative Example 14 44 16 4 4 7 25 amount fire amount fire amount amount fire Comparative Example 15 50 10 2 4 8 26 fire amount fire amount amount amount amount Comparative Example 16 50 7 6 4 7 26 amount amount amount amount amount fire fire Comparative Example 17 50 10 4 2 7 27 fire amount fire amount amount fire amount Comparative Example 18 50 7 4 6 7 26 amount fire amount fire amount amount fire Comparative Example 19 50 12 4 4 4 26 amount fire fire fire amount amount fire Comparative Example 20 50 5 4 3 12 26 fire amount fire amount fire fire amount Comparative Example 21 50 15 4 4 9 18 amount amount amount amount fire amount amount Comparative Example 22 50 5 4 4 6 31 fire fire fire fire amount fire fire Example 21 55 8 3 4 7 23 amount amount amount amount amount amount amount Example 22 54 12 3 3 8 20 amount amount amount amount amount amount amount Example 23 52 9 4 4 7 24 amount amount amount amount amount amount amount Example 24 59 8 5 3 5 20 amount amount amount amount amount amount amount Example 25 48 7 3 3 9 30 amount amount amount amount amount amount amount Example 26 57 6 4 5 6 22 amount amount amount amount amount amount amount Example 27 46 8 3 4 10 29 amount amount amount amount amount amount amount Example 28 44 9 3 5 9 30 amount amount amount amount amount amount amount Example 29 52 7 5 3 8 25 amount amount amount amount amount amount amount Example 30 46 9 4 4 7 30 amount amount amount amount amount amount amount Example 31 45 14 4 4 7 26 amount amount amount amount amount amount amount Example 32 47 11 3 3 10 26 amount amount amount amount amount amount amount Example 33 52 8 5 4 9 22 amount amount amount amount amount amount amount Example 34 43 13 5 5 8 26 amount amount amount amount amount amount amount Example 35 49 7 3 3 9 29 amount amount amount amount amount amount amount Example 36 55 6 5 3 7 24 amount amount amount amount amount amount amount Example 37 51 13 5 5 6 20 amount amount amount amount amount amount amount Example 38 44 10 4 4 9 29 amount amount amount amount amount amount amount Example 39 50 10 3 4 7 26 amount amount amount amount amount amount amount Example 40 47 12 4 3 9 25 amount amount amount amount amount amount amount

* 'Yang': indicates good, 'Fire': indicates bad.

Table 3 Judgment criteria by required property of experimental results Defective Good Smoothness Oil is not smooth Oiliness is smooth Heat resistance Oil cracking occurs during quench and quench Oil-free cracking Meltness Button cone less than 25mm Button cone 25-27mm Whiteness Less than L = 90 L = 90 or more Physical state More than 5mm before immersion after standing for 24 hours 5mm or less Melting Point Suitability Weak against physical rim shock Resistant to shock Crackability Glaze Crack Generation No glaze cracks

The feldspar is resistant to glaze cracks by increasing its heat resistance. If it is more than 60%, the meltability of the glaze is lowered.

Lithium carbonate (Li ₂ CO ₃ ) increases the composition of Li ₂ O to prevent oil cracking. If it is more than 5%, heat resistance is good but oil is not good. If it is less than 3%, heat resistance is significantly decreased.

Barium carbonate (BaCO ₃ ) improves the meltability of the glaze and smoothes the oil surface, but more than 5% causes cracks in the oil surface and less than 3% reduces the meltability of the glaze.

Talc increases the meltability of the glaze and smoothes the oil surface, but when it is more than 15% by weight, the firing temperature is lowered and oil surface cracking occurs. If it is less than 5%, the glaze becomes insoluble.

Zirconium increases the whiteness, heat resistance and sintering of the glaze. If less than 5%, whiteness and heat resistance are inferior. When it is more than 10%, glaze curling occurs.

Ceresite improves the product properties by improving the physical properties of the glaze and the flow of the glaze. If it is less than 20%, the glaze is precipitated. If it is more than 30%, the glaze curling phenomenon occurs.

 After making the heat-resistant magnetic material as described above, applying the glaze to the first baked product and producing the product is the same as the production method of general ceramics, but after molding the product with a composition composition of the mixed composition according to the present invention After the shaping process, it is first baked at 1000 ± 50 ° C., lubricated by glazing with the glaze composition according to the present invention, and then oxidized and calcined at 1250 ± 10 ° C. for shipping and packaging as a finished product.

1 shows the surface of the body composition according to the present invention fired without glaze treatment, Figure 2 shows the surface of the body composition according to the invention fired by treatment with a glaze composition according to the present invention. According to Figure 1 it can be seen that the oil surface of the holding composition according to the present invention fired at 1250 ℃ without applying the glaze is completely sintered, no pores and smooth state, according to Figure 2 treated with the glaze composition according to the present invention It can be seen that there is no glaze crack on the surface of the base material composition according to the present invention fired.

According to the present invention, the absorption rate of the heat-resistant magnetic is extremely low to less than 4%, and there is no inconvenience in using it as a kitchenware like general ceramics, as well as increasing the light transmittance (transparency of the heat-resistant ceramic composition) and the strength of the heat-resistant magnetic. It can be expected to produce higher strength than conventional porcelain even if it is manufactured to about 70% of the thickness of heat-resistant ceramics, so it is very useful because it can lead to increased productivity and reduced energy cost of producers and lower weight to users. In addition, by realizing a white base material composition can be treated with a glaze composition containing a variety of color pigments to develop a variety of colors to meet the various aesthetic needs of the consumer. In addition, by providing the optimum glaze composition to the base material composition according to the present invention can obtain excellent glaze properties such as to prevent the surface glaze crack of the heat-resistant magnetic when cooking.

Claims (2)

As a holding composition for a multi-color high strength heat-resistant ceramic, the holding composition, 50 to 70% by weight of feldspar, 5 to 10% by weight of talc, 3 to 5% by weight of cordierite based on the total weight of the holding composition A holding composition for a multicolor high strength heat-resistant ceramic consisting of 3-5% by weight of barium and 10-39% by weight of clay + clay. As a glaze composition for a multi-color high strength heat-resistant ceramic which is oiled after molding a product with the base material composition according to claim 1 and then baking it at 1000 ± 50 ° C. The glaze composition, based on the total weight of the glaze composition, 40-60% by weight of feldspar, talc 5-15%, barium carbonate 3-5%, lithium carbonate 3-5%, zirconium 5-10 Glaze composition for a multi-color high strength heat-resistant ceramic consisting of 20% by weight and ceresite 20-30% by weight.

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