KR102052079B1 - Glace Composition for Ceramic Ware Comprising Ashes from Walnut Shell and Preparation Method thereof - Google Patents

Abstract

The present invention relates to a glaze composition for ceramics comprising ashes from a walnut shell and, more specifically, to a glaze composition for ceramics which comprises: ashes from a walnut shell which is powder of the ashes obtained by burning the walnut shell; and conventional glaze raw materials including feldspar, quartzite and Sancheong clay, and has luxurious natural beauty.

Description

Glaze composition for ceramics comprising a walnut shell material and a method for preparing the same {Glace Composition for Ceramic Ware Comprising Ashes from Walnut Shell and Preparation Method}

The present invention relates to a glaze composition for ceramics comprising a walnut shell material and a method for producing the same.

The contents described in this section merely provide background information on the present invention and do not constitute a prior art.

In general, glaze is a thin glass layer adhered to the surface of the porcelain serves to lower the absorbency of the porcelain, to express aesthetics and to strengthen the porcelain.

In other words, glaze is applied to the surface of ceramics or pottery, etc., and is heat-treated and fused to form a gloss or matte surface layer on the surface. It can remove permeability, increase aesthetic effect, and improve the strength of ceramics. .

Glazes that are polished by firing on the surface of ceramics can usually be composed of feldspar, silica, kaolin, limestone, talc, fluorspar, and bone meal as main components.

As such, the conventional glaze for ceramics has a limitation that it cannot save the luxurious natural beauty such as celadon or white porcelain in the past, which used wooden materials because the glaze is made using only soil or stone powder.

The glaze composition using pine needles, soybean pods, feldspar, clam shell, etc., and the glaze composition using iron oxide, cobalt, etc. of the prior art Patent No. 10-1079706, etc. are not good color development ability, too There was a disadvantage that can not be saved.

Therefore, the present inventors have intensively studied to develop porcelain glazes that can make use of luxurious natural beauty that gives a warm and soft feeling, and as a result, when applying glazes with ash of walnut shell to porcelain, a soft and warm feeling is expressed. It has been found that the present invention can be completed to complete the present invention.

One object of the present invention is to provide an environmentally friendly ceramic glaze and a method of manufacturing the same that can express a warm and soft feeling to save the luxurious natural beauty.

In order to achieve the object of the present invention, the present invention provides a glaze composition comprising a walnut shell ash which is a powder of walnut shell-burned ash and a common glaze raw material.

Walnuts are the fruit of the walnut tree, a deciduous tree of the phlegm family, and contains a lot of omega-3 fats, a type of unsaturated fat. What we often see on the market is that the surgical bleed is removed, leaving only the internal bleeding. Walnut shell in the present invention may mean the inner skin of the walnut fruit. The walnut shell ash can be collected by burning the walnut fruit's inner skin and using the remaining ash powder. When the walnut shell ash is used as a raw material of the glaze for ceramics, it is possible to provide a ceramic that exhibits environmentally friendly and luxurious natural beauty.

Walnut shell ash may contain calcium oxide (CaO). Calcium oxide (CaO) can lower the melting temperature of the glaze mixture and thereby increase the meltability of the glaze composition. That is, when the calcium oxide (CaO) is contained a lot, the glaze composition starts to be melted at a relatively low temperature, so that the melting glaze for ceramics can be prepared. If the melting temperature of porcelain glaze is high and does not melt well, the role of calcium oxide (CaO) may be important because higher temperatures and longer firing times are required. In addition, calcium oxide (CaO) may serve as a solvent to mix the raw materials contained in the glaze composition with each other.

In addition, calcium oxide (CaO) may serve to soften the color of the glaze. In addition, calcium oxide (CaO) may increase the surface glossiness of the glaze. In other words, it is applied to the outer surface of the ceramics to increase the glossiness of the surface of the ceramics. However, when excessively contained, the surface of the glaze may be formed to include cracks, grooves shaped like craters formed in the inside, and may be formed as a smooth and uneven surface.

In addition, the walnut shell ash may contain phosphorus oxide (P ₂ O ₅ ). When the glaze for ceramics is manufactured using this, a soft milky white color is expressed, and thus a clear and warm feeling can be expressed. When walnut shell ash is added to ceramic glazes, it can be applied to milky glazes and transparent glazes, and especially to milky glazes. However, the present invention is not limited thereto and may be applied to any known glaze.

In addition, the walnut shell ash may contain a silica (SiO 2) component. According to the silica (SiO 2) component, it is possible to increase the viscosity of the glaze, and thus, when preparing glaze using walnut shell ash, it may not add silica (component that can increase the viscosity) separately.

In addition, the walnut shell ash may contain magnesium oxide (MgO). Magnesium oxide (MgO) may play a similar role as calcium oxide (CaO) mentioned above.

In addition, the walnut shell ash may contain aluminum oxide (Al ₂ O ₃ ). Aluminum oxide (Al ₂ O ₃ ) can increase the physical properties of the glaze, increase the viscosity of the glaze can prevent flowing like water and make the matte feeling less light.

Common ceramic glaze raw materials may include all of the ceramic glaze raw materials widely used in the art, specifically selected from the group consisting of feldspar, pottery stone, dolomite, limestone, silica, kaolin, sancheol and mixtures thereof It may include, but is not necessarily limited thereto.

Alkaline component of feldspar or pottery among the components of ordinary glaze material reacts with the silica component of glaze material and plays the role of flux to make glassy, and dolomite, which is a kind of limestone and limestone, melts glaze better and increases hardness. do. These mixing ratios are obvious to those of ordinary skill in the art.

Glaze composition for ceramics according to an embodiment of the present invention may include 10 to 40% by weight of walnut shell ash and 60 to 90% by weight of conventional glaze raw materials.

In addition, glaze composition for ceramics according to an embodiment of the present invention is kaolin, clay, barium carbonate, pottery, talc, dolomite, bone ash, loess, bentonite, copper oxide, cobalt oxide, manganese oxide, nickel oxide, titanium oxide, oxide It may further include according to the type of glaze to prepare tin, zinc oxide and the like. The glaze composition for ceramics according to an embodiment of the present invention, when applied to ceramics, by adding a coloring material such as copper oxide, cobalt oxide, manganese oxide, nickel oxide, titanium oxide, tin oxide, etc., such as jade, olive green, brown Can be represented.

In addition, the present invention can provide a method for producing a glaze composition for ceramics containing walnut shell ash. The method of preparing a glaze composition for ceramics may include preparing a walnut shell ash and mixing a walnut shell ash with a conventional glaze raw material.

The step of preparing the walnut shell ash can be obtained by the general method used in the art. For example, walnut shells are burned with ash and mixed with water, and then sieved to filter out foreign materials. If the sifted walnut shell ash precipitates and sinks, the lye can be separated from the precipitated ash (repeats several times), and the remaining ash can be dried and used in powder form.

The walnut shell ash thus prepared may be mixed with a conventional glaze material to prepare a glaze composition for ceramics according to an embodiment of the present invention.

Additional solutions of the invention will be set forth in part in the description which follows, and in part will be readily apparent from the description, or may be learned by practice of the invention.

Both the foregoing general description and the following detailed description are exemplary and explanatory only and do not limit the invention described in the claims.

The glaze composition for porcelain comprising the walnut shell ash according to the present invention can save the luxurious natural beauty, can be used in the production of various color glazes such as celadon glaze, powder blue glaze, matt glaze, irabo glaze, celestial glaze.

FIG. 1 is a drawing substitute photograph of ten test pieces prepared by baking 10 compositions having different composition ratios according to an embodiment of the present invention in a test piece and sintering them in an oxidation or reduction atmosphere.
2 to 10 is a picture substitute photograph taken in close-up each of the ten test pieces from the first to ten times in accordance with an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, in describing a specific embodiment of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Test Example: Analysis of Walnut Shell Ash Ingredients

Table 1 below is a component analysis table of walnut shell ash analyzed by XRF. Referring to Table 1, it is possible to grasp the results of the component analysis of walnut shell ash using XRF.

Walnut shell ash may include calcium oxide (CaO) and magnesium oxide (MgO). Walnut shell ash may include 64.52 wt% calcium oxide (CaO) and 18.25 wt% magnesium oxide (MgO) based on the total weight of the walnut shell ash. Calcium oxide (CaO) and magnesium oxide (MgO), as mentioned above, can lower the melting temperature of the composition of the glaze, and may serve as a solvent to facilitate the mixing of the various components mixed in the glaze composition.

In addition, the walnut shell ash may include phosphorus oxide (P ₂ O ₅ ). Walnut shell ash may contain 6.99% by weight of phosphorus oxide (P ₂ O ₅ ) based on the total weight of the walnut shell ash. Phosphorus oxide (P ₂ O ₅ ), as mentioned above, can make the glaze feel clear and warm, and can make the glaze feel soft.

In addition, the walnut shell ash may include silicon oxide (SiO ₂ ). Walnut shell ash may contain 2.88% by weight of silicon oxide (SiO ₂ ) based on the total weight of the walnut shell ash.

In addition, the walnut shell ash may contain aluminum oxide (Al ₂ O ₃ ). Walnut shell ash may contain 1.7% by weight of aluminum oxide (Al ₂ O ₃ ) based on the total weight of the walnut shell ash. This increases the viscosity of the glaze and prevents it from flowing like water and gives a matte look with less light.

In addition, the walnut shell ash may contain 0.39% by weight of other components based on the total weight of the walnut shell ash. The other components group elements having a relatively small component content into one category, 'other', and may include SrO, ZnO, BaO, CuO, Cr ₂ O ₃ , and Pm ₂ O ₃ .

ingredient CaO MgO P ₂ O ₅ K ₂ O SiO ₂ Al ₂ O ₃ Na ₂ O SO ₃ Fe ₂ O ₃ MnO Other Unit (w t%) 64.52 18.25 6.99 3.15 2.88 1.7 0.7 0.56 0.46 0.4 0.39

Example

Walnut shell ash was mixed with feldspar and silica, but 10 kinds of glazes were prepared by mixing according to the composition ratio (weight ratio based on the total weight of the glaze composition) of the components shown in Table 2 below. The test pieces attached to FIG. 1 were used for ten glazes prepared in accordance with the composition ratios shown in Table 2 in ten primed test pieces, and then put in a kiln for 8 hours to 10 hours at 1230 ° C. to 1250 ° C. in an oxidation or reduction atmosphere. It is manufactured by the process of baking for time.

division Walnut shell ash feldspar burr One 10 80 10 2 10 70 20 3 20 70 10 4 10 60 30 5 20 60 20 6 30 60 10 7 10 50 40 8 20 50 30 9 30 50 20 10 40 50 10

2 to 10 is a picture substitute photograph taken in close-up each of the ten test pieces from the first to ten times in accordance with an embodiment of the present invention.

Among these, it can be seen that the specimens 3, 4, 7, 8, and 10 have a characteristic aspect compared to the other.

Referring to FIG. 4, in the case of No. 3, the whole milky white color may be formed to have a blue color near the edge of the portion where the glaze composition is applied. Some emulsion effect may occur. The glaze effect is a phenomenon in which the color of the glaze is blurred, which means that the glaze does not melt completely because the temperature does not rise above the melting point of the surface glaze.

Referring to FIG. 5, in the case of No. 4, the glaze composition is not melted as a whole, and thus, the surface of porcelain may be formed as a white matte surface.

Referring to FIG. 8, the seventh case may be entirely milky, but the glaze composition may not be properly melted, and thus the surface of ceramics may be formed as a white matte surface.

Referring to FIG. 9, in the case of No. 8, the glaze composition is relatively less melted, so that the surface of ceramics may be formed as a white semi-matte surface.

Referring to FIG. 11, in the case of No. 10, the color is entirely white, but the color is generally blue. In particular, the color 10 may be formed to have a blue color near the edge of the portion where the glaze composition is applied. Specifically, it can be seen that the case 10 is a milky white with a light blue to green color as a whole, the central portion of the glaze-coated portion has a milky white color, and the edge portion has a deep blue-green color compared to the center portion.

The present embodiment is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains various modifications and variations of the present embodiment without departing from the essential characteristics of the present invention. It will be possible. The present embodiment is not intended to limit the technical spirit of the present invention but to explain, and thus the scope of the present invention is not limited by the present embodiment. The scope of protection of the present invention should be construed by the claims, and all technical ideas deemed equivalent or equivalent thereto should be construed as being included in the scope of the present invention.

Claims (6)

delete delete delete delete Walnut shell ash, which is a powder of ash that corresponds to the inner skin of the shell covering the walnut fruit; And
Glaze raw materials including feldspar and silica
Including,
The walnut shell ash is 40% by weight, the feldspar is 50% by weight, the silica is 10% by weight based on the total weight of the glaze composition,
The walnut shell ash,
64.52% by weight of calcium oxide (CaO), 18.25% by weight of magnesium oxide (MgO), 6.99% by weight of phosphorus oxide (P2O5), 3.15% by weight of potassium oxide (K2O), silicon oxide (SiO2) 2.88 Wt%, aluminum oxide (Al2O3) 1.7 wt%, sodium oxide (Na2O) 0.7 wt%, sulfur oxide (SO3) 0.56 wt%, iron oxide (Fe2O3) 0.46 wt% and manganese oxide (MnO) 0.4 wt%
Including,
When fired in a reducing atmosphere, it is milky white with an overall blue color, but the central part of the part coated with the glaze composition is milky white, and the edge part is dark blue compared to the center part.
Glaze composition for ceramics comprising a walnut shell ash, characterized in that. delete

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