KR101110270B1 - Composition of a underglaze pigment for ceramic handpainting - Google Patents

Abstract

The present invention (A) 30 to 80 parts by weight of a pigment for ceramics; (B) 5 to 40 parts by weight of kaolin; (C) 0.1 to 30 parts by weight of glaze; (D) 15 to 70 parts by weight of water, based on 100 parts by weight of (A) + (B) + (C); And (E) provides a lower pigment composition for porcelain hand-painting consisting of 0.05 to 15 parts by weight of glycerin with respect to 100 parts by weight of (A) + (B) + (C) and a particle size of 0.1 to 20 ㎛.

Ceramics, Hand Painting, Hahoe

Description

Hahoe pigment composition for porcelain hand-painting {COMPOSITION OF A UNDERGLAZE PIGMENT FOR CERAMIC HANDPAINTING}

The present invention relates to a lower pigment composition for ceramic hand painting. More specifically, the present invention relates to a lower pigment composition for porcelain hand-painting, which exhibits a desired color during porcelain hand-painting and at the same time gives a stable coloring effect.

Painting techniques on pottery can be divided into upper and lower techniques. The overglaze involves painting and baking on glazed chaebol pottery surfaces. Underglaze involves painting on the surface of primitive pottery and then baking it with glaze.

Ceramic pigments are divided into upper pigments and lower pigments. Chamber pigments are used after glazing or when painting on chaebol pottery. Hahoe pigments, on the other hand, are used on prime ceramics before glazing.

Hahoe pigment is used as the main raw material for ceramic hand painting. Hahoe pigments can be used to create a painting atmosphere by painting or patterning the surface of ceramics. In addition, hand-painted ceramics using Hahoe pigments can be used as ceramics suitable for the food culture of many Koreans because fermented foods are calcined at high temperatures of 1200 ° C or higher.

However, unlike other paints, hahoe pigments are often significantly different colors before and after firing. Red-colored colors such as pink and purple may not stand at high temperatures and may change color or not appear at all. Depending on the firing conditions, red may turn gray or green may turn yellow. In addition, even the same red pigment may cause a problem in that the intended color does not appear when handpainting because there is a subtle difference in color between companies that manufacture the pigment.

In addition, the existing Hahoe pigment has a problem that the brush painting is not made well when the hand painting on the surface of the pottery can not express the desired painting.

The technique of hand painting is improving day by day, and it takes a lot of time and advanced techniques to produce a wonderful work with deep and diverse color development. Therefore, there is an urgent need for the development of a low pigment for hand-painting of various colors that can be used freely by a ceramic artist.

The present invention is to provide a lower pigment composition for porcelain hand painting by adjusting the mixing ratio and the particle size of the pigment composition, showing a desired color during the hand painting and stable color development effect.

In addition, the present invention is to provide a lower pigment composition suitable for ceramic hand painting.

The present invention (A) 30 to 80 parts by weight of a pigment for ceramics; (B) 5 to 40 parts by weight of kaolin; (C) 0.1 to 30 parts by weight of glaze; (D) 15 to 70 parts by weight of water, based on 100 parts by weight of (A) + (B) + (C); And (E) a lower pigment composition for porcelain hand-painting, consisting of 0.05 to 15 parts by weight of a lubricant and a particle size of 0.1 to 20 μm, based on 100 parts by weight of (A) + (B) + (C).

The composition may further include 0.1 to 15 parts by weight of water glass based on (F) 100 parts by weight of (A) + (B) + (C).

The water glass is an aqueous solution of silicate material selected from the group consisting of sodium silicate, potassium silicate, potassium potassium silicate and mixtures thereof, and the content of silicate material may be 0.1 to 15% by weight based on the total content of water glass material.

Hahoe pigment composition for porcelain hand-painting according to the present invention exhibits excellent color development effect and stable color development effect without significant change in the color when hand painted on the porcelain and the color after firing. In addition, the Hahoe pigment composition according to the present invention is excellent in brush application can be effectively painted on the surface of the porcelain thinker pottery manufacturers.

The present invention (A) Pigment for ceramics; (B) kaolin; (C) glazes; (D) water; And (E) a lubricant, and may further include (F) water glass.

Hereinafter, the present invention will be described in more detail.

The pigment for ceramics (A) is synthesized using natural minerals and colored oxides. These pigments are widely used in various ceramic tiles, sanitary ware, and the like, and any commercially available pigment for ceramics can be used in the present invention. For example, reddish brown pigment made of iron oxide, yellow pigment made of zinc sulfide, green pigment made of chromium oxide, chromium hydroxide, etc., ultramarine pigment made of sodium aluminosilicate, etc., blue pigment such as cobalt oxide, titanium oxide, zinc oxide, etc. White pigments, such as these, can be mentioned, It can be purchased commercially.

Besides the pigments mentioned above, all pigments used in ceramics can be used.

The porcelain pigment may be used by adjusting the amount according to the degree of expression of color, using 30 to 80 parts by weight. If the content of the pigment for porcelain is less than 30 parts by weight may cause a disadvantage that the color development is not good, the pigment If it exceeds 80 parts by weight, the color is clear and strong, but it does not adhere well to the basic ceramics, and it is difficult to draw a picture. And, when firing may cause a problem that the glaze and the pigment is separated and not oiled.

In order to perform hand painting on the primary ceramics, (B) kaolin and (C) glaze are mixed and used in the ceramic pigment. The kaolin is a yellowish white or gray aluminum silicate mud powder that is present in its natural state in a water-containing form.

The kaolin has a strong adhesive force so that the brush (smooth) is attached to the porcelain smoothly while drawing the brush on the primary ceramics. In addition, the kaolin serves to stably display the color of the pigment during firing.

The kaolin is added 5 to 40 parts by weight. When the kaolin is added in less than 5 parts by weight of the hahoe pigment according to the present invention is not attached to the porcelain well, the state of the hahoe pigment may not be smooth to draw a picture, the color development of the pigment may not be stable after firing. . If the amount exceeds 40 parts by weight, the desired color may not be obtained and the shrinkage during firing may cause a problem that the pigment does not adhere well to the ceramics.

In addition, when the kaolin content exceeds 40 parts by weight, the pigment color becomes cloudy and bluish, and the adhesion of the pigment is strong, making it difficult to draw with a brush (that is, poor brushing), and less than the kaolin content exceeding 40 parts by weight. When painting the primary ceramics with pigments and firing the ceramics, the surface of the ceramics may be rough because kaolin does not melt.

Examples of the type of glaze include lime oil, lime barium oil, magnesia oil and the like. It is preferable to use lime barium oil having good color development ability for the handpaint glaze of the present invention.

The glaze is added at 0.1 to 30 parts by weight. If the glaze is added in less than 0.1 part by weight may cause a problem that the color of the pigment is not clear after firing, if the addition amount of the glaze exceeds 30 parts by weight, the color after the firing is blurred or too clear to express a strong color during hand painting. The problem may occur.

In addition, when the content of the glaze is more than 30 parts by weight, the color development of the pigment is blurred, a problem may occur that the phenomenon of curling when glazing on the primary ceramics. In addition, if the glaze is used in excess of 30 parts by weight, the adhesion of the pigment is lowered, so it may be difficult to apply the paint or paint a long time at a time when painting the pigment on the primary ceramics with a brush. In addition, it may be difficult to handle things easily because it is easy to erase even if only a slight rubbing by hand.

Hahoe pigment composition according to the present invention is used for hand painting of ceramics (D) water should be added. In the present invention, the water is added 15 to 70 parts by weight based on 100 parts by weight of the (A) + (B) + (C). Brushing is best done when hand painting with porcelain pigment containing this range of water. If the amount of the water is less than 15 parts by weight of the lower pigment composition is not mixed well, if more than 70 parts by weight may cause a problem that the color of the pigment is blurred.

The above (E) lubricant is added to increase the sliding property of the aforementioned ceramic (A) pigment, (B) kaolin, (C) glaze and (D) water mixture and to make the brushing well. The lubricant may be any hydrophilic lubricant, glycerin is preferred.

The lubricant is added in an amount of 0.05 to 15 parts by weight based on 100 parts by weight of (A) + (B) + (C). When the content of the lubricant is less than 0.05 parts by weight, the lower pigment composition according to the present invention may be agglomerated, so that brushing may not be performed well or color may not be well formed during hand painting. When the amount of the lubricant exceeds 15 parts by weight with respect to 100 parts by weight of (A) + (B) + (C), a desired color development effect may not appear or problems such as curling after firing may occur. In addition, when the amount exceeds 15 parts by weight, the pigment may be hand painted on the primary porcelain, and then the drying may be slow, resulting in discomfort when applying the glaze to the primary porcelain hand-painted.

In the lower pigment composition according to the present invention, (F) water glass, which serves as a dispersant, may be further added.

The basic main raw material of the water glass is silicon oxide, i.e., silica sand or silica. The water glass is generally a soda water glass containing sodium silicate as a main component, but all materials such as potassium water glass and soda potassium water glass are also usable in the present invention.

In order to effectively perform the role of water glass in the present invention, the water glass is an aqueous solution of a silicate material selected from the group consisting of sodium silicate, potassium silicate, potassium potassium silicate, and mixtures thereof, wherein the content of silicate material is 0.1 to 15% by weight. Preference is given to using water glass.

The water glass is added in an amount of 0.1 to 15 parts by weight based on 100 parts by weight of (A) + (B) + (C). When the content of the water glass is less than 0.1 parts by weight, the kaolin is well dispersed because of poor dispersion of components such as kaolin in the pigment. If the content is greater than 15 parts by weight, silicate material is contained and affects color. There is a risk of dark color or smearing of the picture.

In the present invention, the mixing ratio of each component constituting the composition is adjusted to the optimum ratio so that the color before and after firing of the lower pigment composition is maintained. This is because it is very important to make a desired color appear when handpainting with the lower pigment composition. To this end, in addition to the combination ratio, the particle size of the pigment composition plays a very important role.

That is, in order to draw on the surface of the primary porcelain with the lower pigment composition of the present invention, the pigment for ceramics, kaolin, glaze, water and the like are mixed at a predetermined ratio and pulverized using a mill such as a ball mill.

At this time, the particle size of the lower pigment composition is preferably 0.1 to 20 ㎛. If the particle size is 0.1 μm or less, a problem may occur that affects the color of the pigment. If the particle size exceeds 20 μm, the mixing may not be uniform, and thus, a problem may occur in which a desired color is not formed after firing.

When the particle size of the pigment composition exceeds 20 μm and becomes visible, the color distribution becomes uneven and the depth of the color is poor when painting the pigment according to the present invention in the ceramics. The pellets may clump and peel.

The lower pigment composition is to show a variety of colors depending on the pigment for porcelain included. And using this pigment composition, hand painting to draw directly on the surface of the primary porcelain, and after applying the glaze can be obtained through the firing operation to obtain a painted ceramics.

Examples of the type of glazes include general glazes commercially available such as lime oil, lime barium oil and magnesia oil.

Hereinafter, the present invention will be described in more detail with reference to examples. However, these examples are only for illustrating the present invention, and the scope of the present invention is not limited thereto.

Example

Example 1

70 parts by weight of yellow pigment (H200, Hanil Pigment, Korea), 20 parts by weight of Indonesian kaolin, 10 parts by weight of lime barium glaze, 50 parts by weight of water, 13 parts by weight of glycerin and ground in a ball mill The lower pigment for hand-painting which is micrometer was manufactured. The pigment was applied to the first roasted porcelain specimen and calcined at 1250 ° C. with lime barium oil. As a result, it was confirmed that the brushing of the porcelain specimen was made well, the color of the porcelain specimen was not changed before and after firing, and the color of the porcelain specimen was consistently yellow even after firing (FIG. 1).

Example 2

70 parts by weight of red pigment (CM-500, Daewon Ceramics, Korea), 20 parts by weight of Indonesian kaolin, 10 parts by weight of lime barium glaze, and 45 parts by weight of water, 13 parts by weight of glycerin, sodium silicate content of 10 A pigment for handpainting with an average particle size of 6 μm was prepared in the same manner as in Example 1 except that 15 parts by weight of water glass (Gana Chemical, Korea) was used. The pigment was applied to the first roasted porcelain specimen and calcined at 1250 ° C. with lime barium oil. As a result, it was confirmed that the brushing was well made on the ceramic specimens, the color of the ceramic specimens did not change before and after firing, and the color of the ceramic specimens was consistently red after firing (FIG. 2).

Example 3

A lower pigment for handpainting was prepared in the same manner as in Example 1 except that 70 parts by weight of a black pigment (Nc900Z, Kawamura, Japan) was used. The pigment was applied to the first roasted porcelain specimen and calcined at 1250 ° C. with lime barium oil. As a result, it was confirmed that the brushing of the porcelain specimen was well made, and that the color of the porcelain specimen was not changed before and after firing, and the color of the porcelain specimen was consistently black (FIG. 3).

Comparative Example 1

70 parts by weight of yellow pigment (H200, Hanil Pigment, Korea) and 30 parts by weight of lime barium glaze were mixed without adding kaolin, and the same as in Example 1 except that 50 parts by weight of water and 13 parts by weight of glycerin were used. It was carried out to prepare a lower pigment for hand painting having an average particle size of 30 ㎛. When the pigment was painted on the porcelain roasting ceramic specimens, the adhesive force was large, and the brush did not go out well, and when the pigment was agglomerated and calcined at 1250 ° C. after lime barium oil was applied, it was confirmed that it was sticky (FIG. 4).

Comparative Example 2

The same procedure as in Example 1 was carried out except that 70 parts by weight of red pigment (CM-500, Daewon Ceramics, Korea), 30 parts by weight of lime barium glaze, 50 parts by weight of water, and 13 parts by weight of glycerin were not added. The lower pigment for hand-painting having an average particle size of 30 µm was prepared. The pigment was applied to the first roasted porcelain specimen and calcined at 1250 ° C. with lime barium oil. As a result, it was confirmed that the color of the painting drawn on the porcelain is blurred and cloudy (Fig. 5).

Comparative Example 3

It was carried out in the same manner as in Example 1, except that 70 parts by weight of black pigment (Nc900Z, Kawamura, Japan), 30 parts by weight of lime barium glaze, 50 parts by weight of water, and 40 parts by weight of glycerin were not added. A lower pigment for hand painting having an average particle size of 30 μm was prepared. The pigment was applied to the first roasted porcelain specimen and calcined at 1250 ° C. with lime barium oil. As a result, it was confirmed that the phenomenon that the glaze dries out a lot when drawing on the ceramic specimen (FIG. 6).

1 is a photograph of porcelain specimens prepared according to Example 1 of the present invention.

Figure 2 is a photograph of porcelain specimens prepared according to Example 2 of the present invention.

3 is a photograph of porcelain specimens prepared according to Example 3 of the present invention.

Figure 4 is a photograph of porcelain specimens prepared according to Comparative Example 1 of the present invention.

5 is a photograph of porcelain specimens prepared according to Comparative Example 2 of the present invention.

6 is a photograph of porcelain specimens prepared according to Comparative Example 3 of the present invention.

Claims (3)

(A) 30 to 80 parts by weight of a pigment for ceramics; (B) 5 to 40 parts by weight of kaolin; (C) 0.1 to 30 parts by weight of glaze; (D) 15 to 70 parts by weight of water, based on 100 parts by weight of (A) + (B) + (C); And (E) 0.05 to 15 parts by weight of glycerin relative to 100 parts by weight of (A) + (B) + (C); Hahoe pigment composition for porcelain hand-painting made of a particle size of 0.1 to 20 ㎛. The method of claim 1, The composition (F) (A) + (B) + (C) with respect to 100 parts by weight of water glass, the lower pigment composition for porcelain hand-painting further comprises 0.1 to 15 parts by weight. 3. The method of claim 2, The water glass is an aqueous solution of a silicate material selected from the group consisting of sodium silicate, potassium silicate, potassium potassium silicate and mixtures thereof, wherein the content of silicate material is 0.1 to 15% by weight based on the total content of water glass material Hahoe pigment composition for pottery hand-painting.

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