KR102314418B1 - Glace Composition for Ceramic Ware Comprising Ashes from tomato and Preparation Method thereof - Google Patents

Abstract

The present invention provides a glaze composition for ceramic ware comprising tomato stem ash which comprises tomato stem ash which is powder of ash prepared by burning tomato stems; and a glaze raw material comprising Buyeo feldspar, dolomite, and silica. According to the present invention, the glaze composition can express warm and soft feeling.

Description

Glaze composition for ceramics comprising tomato stem ash and manufacturing method thereof {Glace Composition for Ceramic Ware Comprising Ashes from tomato and Preparation Method thereof}

The present invention relates to a glaze composition for ceramics comprising tomato stem ash and a method for preparing the same.

The content described in this section merely provides background information on the present invention and does not constitute the prior art.

In general, glaze is a thin glass layer that is adhered to the surface of ceramics, and serves to reduce the absorbency of ceramics, express an aesthetic feeling, and strengthen the ceramics.

That is, a glaze is a formulation used to form a glossy or matte surface layer on the surface of ceramics or pottery, etc. by being painted on and heat-treated and fused. .

Glaze, which is painted on the surface of ceramics and made glossy by firing, may be composed mainly of feldspar, silica, kaolin, limestone, talc, fluorite, and bone powder.

As such, the conventional glaze for ceramics uses only soil or stone powder to make the glaze, so there is a limit in that it cannot preserve the luxurious natural beauty of celadon or white porcelain in the Goryeo and Joseon dynasties in the past when wood materials were used.

The glaze composition using pine needles, bean pods, feldspar, clams, etc. of the prior art Registration Patent No. 10-1079706, and the glaze composition using iron oxide, cobalt, etc. of the Registration Patent No. 10-0387920 have poor color development, which is also a luxurious natural beauty. There was a disadvantage that could not be saved.

Accordingly, the present inventors repeated intensive research to develop a glaze for ceramics that can preserve the luxurious natural beauty that gives a warm and soft feeling. and furthermore, it was found that a pattern having a naturally occurring unique aesthetic sense was found, and thus the present invention was completed.

One object of the present invention is to provide an environmentally friendly porcelain glaze and a method for producing the same, which can preserve a luxurious natural beauty by expressing a warm and soft feeling and has a naturally occurring unique aesthetic feeling.

In order to achieve one object of the present invention, the present invention provides a glaze composition comprising tomato stem ash, which is a powder of burnt tomato stem ash, and a conventional glaze raw material.

The glaze composition comprising tomato stem ash according to the present invention may use the powder of the ash remaining after burning the stem supporting the fruit and the leaf, not the tomato fruit. Tomato stems are useless waste, which can be recycled and used as a material for glazes for ceramics. When such tomato stem material is used as a raw material for glaze for ceramics, it is possible to provide ceramics that are environmentally friendly and exhibit luxurious natural beauty.

Tomato stem ash can contain an exceptionally large amount of calcium oxide (CaO), unlike other natural substances. Calcium oxide (CaO) can lower the melting temperature of the glaze mixture, thereby increasing the meltability of the glaze composition. That is, when a large amount of calcium oxide (CaO) is contained, the glaze composition starts to melt at a relatively low temperature, so that a glaze for ceramics that melts well can be prepared. If the melting temperature of the ceramic glaze is high and does not melt well, a higher temperature and a longer firing time are required, so the role of calcium oxide (CaO) may be important. In addition, calcium oxide (CaO) may serve as a mordant to mix the raw materials included in the glaze composition well with each other. In addition, calcium oxide (CaO) may play a role in softening the color of the glaze. In addition, calcium oxide (CaO) can increase the surface gloss of the glaze. That is, it can be applied to the outer surface of ceramics to increase the glossiness of the surface of ceramics. However, if it is contained in an excessive amount, the surface of the glaze may be formed to include cracks, grooves of a crater-like shape formed by bursting from the inside, and the like, and may be formed as an uneven surface.

In addition, tomato stem ash may contain a significantly higher amount of phosphorus _{oxide (P 2} O _{5 ) than other natural substances.} In the case of manufacturing a glaze for ceramics using this, a soft milky white color is expressed, so that a clear and warm feeling can be expressed. When tomato stem ash is added to glaze for ceramics, it can be applied to opalescent glaze and transparent glaze, and it is particularly preferable to apply to opal glaze. However, the present invention is not necessarily limited thereto and may be applied to any known glaze.

In addition, tomato stem ash may contain magnesium oxide (MgO). Magnesium oxide (MgO) can play a similar role to the calcium oxide (CaO) mentioned above.

In addition, tomato stem ash _{may contain potassium oxide (K 2} O). Potassium oxide (K ₂ O) can act as a flux when contained in a glaze, so when a glaze for ceramics is manufactured using this tomato stem ashes, a high-flowability glaze can be manufactured. _{In particular, tomato stem ash contains a lot of potassium oxide (K 2} O) unlike other natural substances such as beans and fruit skins, so it can be suitable for manufacturing Irabo glaze with high flowability.

Common ceramic glaze raw materials may include all of the porcelain glaze raw materials widely used in the art, and specifically may include those selected from the group consisting of feldspar, porcelain, dolomite, limestone, silica, kaolin, and mixtures thereof. However, it is not necessarily limited thereto.

Among the components of common glaze raw materials, alkali components of feldspar or porcelain react with silicate components in the glaze raw materials and act as a flux to make glass, while limestone and dolomite, a kind of limestone, dissolve the glaze better and increase its hardness. do. These mixing ratios will be apparent to those of ordinary skill in the art to which the present invention pertains.

The glaze composition for ceramics according to an embodiment of the present invention may include 10 to 50% by weight of tomato stem ash, 40 to 80% by weight of feldspar stone, 5 to 45% by weight of dolomite, and 5% by weight of silicate.

In addition, the glaze composition for ceramics according to an embodiment of the present invention is kaolin, clay, barium carbonate, porcelain, talc, dolomite, bone ash, ocher, bentonite, copper oxide, cobalt oxide, manganese oxide, nickel oxide, titanium oxide, oxide It may further include tin, zinc oxide, etc. depending on the type of glaze to be manufactured. When the glaze composition for ceramics according to an embodiment of the present invention is applied to ceramics, color-generating raw materials such as copper oxide, cobalt oxide, manganese oxide, nickel oxide, titanium oxide, and tin oxide are added to provide jade color, olive green color, brown color, etc. can represent

In addition, the present invention may provide a method for producing a glaze composition for ceramics comprising tomato stem ash. The method for preparing a glaze composition for ceramics may include preparing a tomato stem ash and mixing the tomato stem ash and a conventional glaze raw material.

The step of preparing the tomato stem ash is first, the first step of burning the tomato stem to make ashes, the second step of mixing the burnt ashes with water and grinding, and then filtering foreign substances other than the ashes using a sieve. can be Next, when the ash of the sieved tomato stem is precipitated and settled, the third step of separating the lye from the precipitated ash (repeated several times) and the fourth step of drying the remaining ash to a powder state may be performed.

The first step is to burn the tomato stems several times to ashes. Rather than simply burning the shells all at once to make ashes, if you burn them several times, you can figure out that each component of the ashes cohesive well. Therefore, the tomato stem can be burned three times in total for cohesion between the components. First, the tomato stems may be gathered together and subjected to a preliminary heating step at 100-120° C. for 60 to 70 minutes. After that, the shells are stirred at 300-350°C so that heat is transmitted evenly to the shells, and the intermediate heating step is performed for 4 hours to 4 hours and 30 minutes, and 6 hours to 7 hours while vibrating the container containing the shells at 500-550°C. It can be made into ash through the final heating step of

In the fourth step, tomato stem ash may be dried by the following method. After spreading the tomato stem ash soaked in moisture in a circle like spreading it on a flat surface, you can start with the ash located at the edge of the circle and go to the center sequentially to heat with hot air. After heating the hot air heating device by moving it from the edge of the circle along the circumference of the circle, it can be dried by moving it again along the circumference of the circle in a part close to the center and heating it. After this process is performed, it can be further subjected to a drying process of 8 to 10 hours at 30-40°C by spreading the ash on a well-ventilated flat place. Since the ash is made of small particles that are light enough to break down very easily and fly into the air, a more delicate drying process is required.

The glaze composition for ceramics according to an embodiment of the present invention can be prepared by mixing the tomato stem material prepared in this way with a conventional glaze raw material.

Additional solutions of the present invention will be set forth in part in the description that follows, and may be readily ascertained in part 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 as set forth in the claims.

The glaze composition for ceramics containing tomato stem material according to the present invention can preserve the luxurious natural beauty, and can be used in the production of various color glazes such as celadon glaze, transparent glaze, matte glaze, Irabo glaze, and cloth glaze.

1 is a ceramic test piece prepared in a reducing atmosphere according to an embodiment of the present invention.
2 is a ceramic test piece No. 6 prepared in a reducing atmosphere according to an embodiment of the present invention.

Hereinafter, specific 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 gist of the present invention, the detailed description thereof will be omitted.

Test Example: Tomato stem ash component analysis

Table 1 below is a component analysis table of tomato stem ash analyzed by XRF. Referring to Table 1, it can be understood the result of component analysis of tomato stem ash using XRF.

Tomato stem ash may include calcium oxide (CaO), phosphorus oxide (P ₂ O ₅ ), magnesium oxide (MgO) and potassium oxide (K ₂ O). Tomato stem ash may contain 45.15% by weight of calcium oxide (CaO), _{19.57% by weight of phosphorus oxide (P 2} O ₅ ), 14.40% by weight of magnesium oxide (MgO), 11.86% by weight of _{potassium oxide (K 2 O)} have. Calcium oxide (CaO) and magnesium oxide (MgO) can lower the melting temperature of the composition of the glaze, as mentioned above, and can serve as a mordant to make the various components mixed in the glaze composition well mixed. In addition, potassium oxide (K ₂ O) can also serve as a flux by being included in the glaze as mentioned above.

In addition, tomato stem ash may contain _{phosphorus oxide (P 2} O _{5 ).} Tomato stem material may contain about 19.75% by weight of phosphorus oxide (P ₂ O _{5 ).} Phosphorus oxide (P ₂ O ₅ ), as mentioned above, can make the glaze feel clear and warm, and can soften the feeling of the glaze.

In addition, tomato stem ash may contain 1.58% by weight of other components. Other ingredients group elements that do not significantly affect the characteristics of the glaze due to their small content in one category called 'Other', and may include Fe ₂ O ₃ , Na ₂ O, ZnO, MnO, SrO, etc. .

ingredient CaO P ₂ O ₅ MgO K ₂ O SiO ₂ SO ₃ Cl Al ₂ O ₃ etc Unit (w t%) 45.15 19.57 14.40 11.86 3.37 1.79 1.22 1.06 1.58

Example

15 kinds of glazes were prepared by mixing tomato stem ash with Buyeo feldspar, dolomite and silica, according to the composition ratios (weight ratio based on the total weight of the glaze composition) of the components shown in Table 2 below. The test piece attached to FIG. 1 is glazed on 15 unglazed test pieces with 15 types of glazes prepared according to the composition ratio shown in Table 2, and then put into a kiln and fired at 1240°C to 1250°C in a reducing atmosphere for 8 hours to 10 hours. It was manufactured through the process of

division tomato stem ash Buyeo Feldspar dolomite burr One 10 80 5 5 2 10 70 15 5 3 20 70 5 5 4 10 60 25 5 5 20 60 15 5 6 30 60 5 5 7 10 50 35 5 8 20 50 25 5 9 30 50 15 5 10 40 50 5 5 11 10 40 45 5 12 20 40 35 5 13 30 40 25 5 14 40 40 15 5 15 50 40 5 5

1 is a ceramic test piece prepared in a reducing atmosphere according to an embodiment of the present invention. The color and surface of the glaze according to the change in the content ratio of each component are observed with reference to the ceramic specimens 1 to 15 of FIG. 1 as follows.

It can be seen that beige and pink colors appear overall. However, in the case of the 6th test piece, it can be understood that the overall green-based jade color is shown as shown in FIG. 2 . The test piece shown in FIG. 2 and the porcelain arranged on the right side were fired using the glaze composition No. 6 (the other rows of the test piece are directed from left to right, but only rows 4, 5, and 6 are arranged so that they are directed from right to left. ). In the case of No. 10 glaze, it is a matt pink color, with many crystal grains formed on the surface, and it will be very useful when you want to express a feeling of a softer and more delicate color while showing a somewhat rough surface.

This embodiment is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains may make various modifications and variations of this embodiment within the scope not departing from the essential characteristics of the present invention. It will be possible. This embodiment is intended to explain, not to limit the technical spirit of the present invention, and therefore, the scope of the present invention is not limited by the present embodiment. The protection scope of the present invention should be construed by the claims, and all technical ideas equivalent to or recognized as equivalent should be construed as being included in the scope of the present invention.

Claims (5)

Tomato stem ash, which is a powder of burnt tomato stem ash; and
Glaze raw materials including Buyeo feldspar, dolomite and silicate
including,
The tomato stem ash is calcium oxide (CaO) 45.15% by weight, phosphorus oxide (P ₂ O ₅ ) 19.57% by weight, magnesium oxide (MgO) 14.40% by weight, potassium oxide (K ₂ O) based on the total weight of the tomato stem ash 11.86% by weight, silicon oxide (SiO ₂ ) It contains tomato stem ash containing 3.37% by weight,
Based on the total weight of the glaze composition, the tomato stem ash is 40% by weight, the Buyeo feldspar is 50% by weight, dolomite is 5% by weight, and silica is 5% by weight,
When applied to ceramics, a matt pink color is expressed, and a number of crystal grains are formed so that the surface is uneven.
A glaze composition for ceramics comprising tomato stem ash. delete delete delete delete

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