Ceramic article having a grainy surface and method for producing the same

Abstract

The application discloses a ceramic product with a granular surface and a preparation method thereof, and belongs to the technical field of ceramics. The ceramic product with a granular surface is composed of a ceramic blank and a rough granular layer, the rough granular layer is coated on the surface of the ceramic blank, and the outer surface of the ceramic blank has a granular surface. The prepared glaze can be used in ceramic products with different particle size requirements, so that the ceramic product can meet different ceramic products, the application direction is wider, and the production efficiency of the ceramic product is improved. Moreover, the prepared ceramic product has high glaze strength and strong ornamental property.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of ceramics, and particularly relates to a ceramic product with a grainy surface and a preparation method thereof. BACKGROUND

[0002] It is known that most of the traditional ceramic products on the market are favored by consumers due to their smooth glaze surface, supplemented by different patterns, or the effect of pure color glaze surface,

[0003] In order to break through the traditional ceramic products, the applicant decides not to make a smooth glaze surface, but to develop a ceramic product with a grainy surface.

[0004] Chinese patent application No. 201710605622.0 discloses a kind of anti-skid wear-resistant ceramic tile, and in order to make the glaze surface have grainy feeling, it is realized by anti-skid wear-resistant particles, and the particle size distribution of anti-skid wear-resistant particles is 80-120 mesh 20%-30%, 120-180 mesh 50%-60%, and the rest is below 200 mesh. It can be seen that the grainy effect of the glaze surface is realized by controlling the particle size of the anti-skid wear-resistant particles.

[0005] The above-mentioned method for realizing the grainy effect of the glaze surface has a defect, i.e. it is necessary to prepare anti-skid wear-resistant particles with the required mesh number, and if particles with different mesh numbers are required, they need to be prepared separately. Therefore, the applicant designs a glaze material that can be used in ceramic products with different particle size requirements, so that it can be applied to different ceramic products, the application direction is wider, and the production efficiency of ceramic products is improved. SUMMARY

[0006] The present application aims to overcome the shortcomings of the prior art, and provides a glaze material that can be used in ceramic products with different particle size requirements, so that it can be applied to different ceramic products, the application direction is wider, and the production efficiency of ceramic products is improved.

[0007] The present application adopts the following technical solutions:

[0008] The ceramic product with a grainy surface is composed of a ceramic body and a rough granular layer, the rough granular layer is coated on the surface of the ceramic body, and the outer surface of the ceramic body has a grainy feeling.

[0009] Further, the rough granular layer is formed by firing the first glaze material and the second glaze material.

[0010] Further, the first glaze material comprises the following components in terms of mass fraction: glass powder 2-3 parts, kaolin 9-11 parts, alumina 11-16 parts, quartz 10-12 parts, calcined talc 6-8 parts, palygorskite 7-10 parts, vermiculite 6-8 parts, and amino silane 8-13 parts.

[0011] Further, the second glaze includes the following components in terms of mass fraction: 10-13 parts of potassium feldspar, 10-13 parts of sodium feldspar, 13-15 parts of aluminum oxide, 6-8 parts of zinc oxide, 9-13 parts of barium oxide, and 7-12 parts of silicon oxide.

[0012] The method for preparing the ceramic product with a granular surface includes the following steps:

[0013] Step 1, glaze preparation

[0014] According to the mass fraction, the components of the first glaze and the second glaze are prepared into first glaze water and second glaze water, respectively.

[0015] Step 2, preliminary glazing

[0016] The first glaze water obtained in step 1 is applied to the surface of the ceramic body to obtain a preliminarily glazed ceramic body.

[0017] Step 3, glazing

[0018] The second glaze water obtained in step 1 is sprayed onto the ceramic body obtained in step 2 by glazing to obtain a ceramic body to be fired.

[0019] Step 4, firing

[0020] The ceramic body to be fired obtained in step 3 is fired, and after cooling, a ceramic product with a granular surface is obtained, wherein the firing temperature is 1100-1130°C, and the time is 10-11h.

[0021] Further, during glazing, after the preliminarily glazed ceramic body is allowed to stand for 10-20min, the nozzle of the spray gun is adjusted and then glazing is performed.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] Firstly, in order to prepare a ceramic product with a granular surface, a rough granular layer is arranged on the glaze layer, and the rough granular layer is composed of a first glaze and a second glaze, and first glaze water and second glaze water are prepared, the first glaze water is first applied and then allowed to stand, and then the nozzle of the spray gun is adjusted, so that the second glaze water sprayed on the first glaze water layer presents different sizes of granules, which can meet the needs of different products.

[0024] Moreover, since the Baumé degree of the second glaze water is higher than that of the first glaze water, it is easier to form granules during firing.

[0025] Second, since the second glaze water is formed into granular shape when falling on the outer surface of the first glaze layer, in order to improve the strength of the first glaze layer, kaolin, quartz, palygorskite and vermiculite are mixed to improve the glaze strength, and the adsorption performance of palygorskite is used to make the first glaze better adhere to the surface of the ceramic body;

[0026] Third, in order to make the second glaze better adhere to the first glaze layer, amino silane is added as an adhesion promoter in the first glaze, which can better ensure that the second glaze is fixed on the first glaze layer, and the glaze effect after firing is ensured, the glaze has a matte effect, and the glaze also has a rough granular shape, which has a different visual effect. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 Photos of the ceramic product with a granular surface;

[0028] Figure 2 Photos of the ceramic product with a granular surface. DETAILED DESCRIPTION

[0029] The raw materials used in the present application are all commercially available.

[0030] Example 1

[0031] The ceramic product with a granular surface is composed of a ceramic body and a rough granular layer, which is coated on the surface of the ceramic body, and the outer surface of the ceramic body has a granular surface.

[0032] The rough granular layer is formed after firing of the first glaze and the second glaze.

[0033] The first glaze includes the following components in mass fraction: glass powder 3 parts, kaolin 11 parts, alumina 16 parts, quartz 12 parts, calcined talc 8 parts, palygorskite 10 parts, vermiculite 8 parts, and amino silane 13 parts.

[0034] The second glaze includes the following components in mass fraction: potassium feldspar 13 parts, sodium feldspar 13 parts, alumina 15 parts, zinc oxide 8 parts, barium oxide 13 parts, and silicon oxide 12 parts.

[0035] The method for preparing the ceramic product with a granular surface includes the following steps:

[0036] Step 1, glaze preparation

[0037] According to the mass fraction, the components of the first glaze and the second glaze are prepared into first glaze water and second glaze water, respectively;

[0038] Specifically as follows:

[0039] The glass powder, kaolin, alumina, quartz, calcined talc, palygorskite and vermiculite are mixed, crushed, ball milled, sieved according to the mass fraction, then the sieved raw materials and the aminosilane are mixed, and water is added to prepare a first glaze water with a Baume degree of 43,

[0040] The potassium feldspar, sodium feldspar, alumina, zinc oxide, barium oxide and silicon oxide are mixed according to the mass fraction, also through mixing, crushing, ball milling and sieving, and then water is added to prepare a second glaze water with a Baume degree of 50;

[0041] Step 2, preliminary glazing

[0042] The first glaze water obtained in step 1 is applied to the surface of the ceramic body to obtain a preliminarily glazed ceramic body, which is left to stand for 20 min;

[0043] Step 3, glazing

[0044] The second glaze water obtained in step 1 is sprayed onto the ceramic body obtained in step 2 by adjusting the mesh number of the gun head of the spray gun to obtain a ceramic body to be fired;

[0045] Step 4, firing

[0046] The ceramic body to be fired obtained in step 3 is fired at a temperature of 1130℃ for 11h, and after natural cooling, a ceramic product with a granular surface is obtained.

[0047] Example 2

[0048] The ceramic product with a granular surface is composed of a ceramic body and a rough granular layer, the rough granular layer is coated on the surface of the ceramic body, and the outer surface of the ceramic body has a granular feeling.

[0049] The rough granular layer is formed after the first glaze and the second glaze are fired.

[0050] The first glaze includes the following components according to the mass fraction: glass powder 3 parts, kaolin 10 parts, alumina 14 parts, quartz 11 parts, calcined talc 7 parts, palygorskite 8 parts, vermiculite 7 parts, and aminosilane 11 parts.

[0051] The second glaze includes the following components according to the mass fraction: potassium feldspar 12 parts, sodium feldspar 12 parts, alumina 14 parts, zinc oxide 7 parts, barium oxide 11 parts, and silicon oxide 10 parts.

[0052] The method for preparing a ceramic product with a granular surface includes the following steps:

[0053] Step 1, glaze preparation

[0054] The components of the first and second glazes are prepared into first and second glaze water respectively according to the mass fraction;

[0055] The preparation is as follows:

[0056] The glass powder, kaolin, alumina, quartz, calcined talc, palygorskite and vermiculite are mixed, crushed, ball milled, and sieved according to the mass fraction, and then the sieved raw materials and the aminosilane are mixed to prepare the first glaze water with a Baume degree of 41 by adding water,

[0057] The potassium feldspar, sodium feldspar, alumina, zinc oxide, barium oxide and silicon oxide are mixed according to the mass fraction, and also mixed, crushed, ball milled, and sieved, and then water is added to prepare the second glaze water with a Baume degree of 48;

[0058] Step 2, preliminary glazing

[0059] The first glaze water obtained in step 1 is applied to the surface of the ceramic body to obtain a preliminarily glazed ceramic body, which is left to stand for 10-20 min;

[0060] Step 3, glazing

[0061] The second glaze water obtained in step 1 is sprayed onto the ceramic body obtained in step 2 by adjusting the mesh number of the gun head of the spray gun to obtain a ceramic body to be fired;

[0062] Step 4, firing

[0063] The ceramic body to be fired obtained in step 3 is fired at a temperature of 1110℃ for 11 h, and then naturally cooled to obtain a ceramic product with a granular surface.

[0064] Example 3

[0065] The ceramic product with a granular surface is composed of a ceramic body and a rough granular layer coated on the surface of the ceramic body, and the outer surface of the ceramic body has a granular feeling.

[0066] The rough granular layer is formed after the first and second glazes are fired.

[0067] The first glaze includes the following components according to the mass fraction: glass powder 2 parts, kaolin 9 parts, alumina 11 parts, quartz 10 parts, calcined talc 6 parts, palygorskite 7 parts, vermiculite 6 parts, and aminosilane 8 parts.

[0068] The second glaze includes the following components according to the mass fraction: potassium feldspar 10 parts, sodium feldspar 10 parts, alumina 13 parts, zinc oxide 6 parts, barium oxide 9 parts, and silicon oxide 7 parts.

[0069] The application discloses a method for preparing a ceramic product with a granular surface, comprising the following steps:

[0070] Step 1, preparing a glaze

[0071] According to the mass fraction, the components of the first glaze and the second glaze are prepared into first glaze water and second glaze water respectively;

[0072] Specifically as follows:

[0073] According to the mass fraction, the glass powder, kaolin, alumina, quartz, calcined talc, palygorskite and vermiculite are mixed, crushed, ball milled, sieved, and then the sieved raw materials and the aminosilane are mixed and water is added to prepare the first glaze water with a Baume degree of 40,

[0074] According to the mass fraction, the potassium feldspar, sodium feldspar, alumina, zinc oxide, barium oxide and silicon oxide are mixed, and are also mixed, crushed, ball milled and sieved, and then water is added to prepare the second glaze water with a Baume degree of 46;

[0075] Step 2, primary glazing

[0076] The first glaze water obtained in step 1 is applied to the surface of the ceramic body to obtain a primary glazing ceramic body, and the primary glazing ceramic body is placed for 10-20 min;

[0077] Step 3, glazing

[0078] The second glaze water obtained in step 1 is sprayed on the ceramic body obtained in step 2 by adjusting the mesh number of the gun head of a spray gun, so that a ceramic body to be fired is obtained;

[0079] Step 4, firing

[0080] The ceramic body to be fired obtained in step 3 is fired at a temperature of 1100 DEG C for 10 h, and after natural cooling, a ceramic product with a granular surface is obtained.

[0081] The ceramic product with a granular surface prepared by the examples 1-3 of the application is detected, and the chromium and lead dissolution amounts of the ceramic product are detected according to GB / T3532-2009.

[0082] The detection results are shown in Table 1.

[0083] Table 1: test results of the ceramic product with a granular surface

[0084]

[0085] From Table 1, it can be seen that the lead and chromium elution amounts of the ceramic products with the surface having a granular feel obtained by the methods of Examples 1 to 3 all meet the standards, and the thermal shock resistance requirements are met. In particular, the glaze surface has a matte effect, and the glaze surface also has coarse granular shape, and has a different visual effect.

[0086] The above describes the preferred embodiments of the present application. It should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements are also considered to be within the scope of protection of the present application.

Claims

1. A ceramic product having a grainy surface, characterized in that, The ceramic product with granular surface is composed of a ceramic body and a rough granular layer coated on the surface of the ceramic body, and the outer surface of the ceramic body has a granular feeling. The rough granular layer is formed by firing the first glaze and the second glaze. The first glaze comprises the following components in terms of mass fraction: glass powder 2-3 parts, kaolin 9-11 parts, alumina 11-16 parts, quartz 10-12 parts, calcined talc 6-8 parts, palygorskite 7-10 parts, vermiculite 6-8 parts, and amino silane 8-13 parts. The second glaze comprises the following components in terms of mass fraction: potassium feldspar 10-13 parts, sodium feldspar 10-13 parts, alumina 13-15 parts, zinc oxide 6-8 parts, barium oxide 9-13 parts, and silicon oxide 7-12 parts.

2. The ceramic article of claim 1 having a surface with a grainy appearance, characterized in that, The method comprises the following steps: Step 1, glaze preparation The components of the first glaze and the second glaze are prepared into first glaze water and second glaze water, respectively, according to the mass fraction. Step 2, preliminary glazing The first glaze water obtained in step 1 is applied to the surface of the ceramic body to obtain a preliminarily glazed ceramic body. Step 3, glazing The second glaze water obtained in step 1 is sprayed onto the ceramic body obtained in step 2 by glazing to obtain a ceramic body to be fired. Step 4, firing The ceramic body to be fired obtained in step 3 is fired, and after cooling, a ceramic product with a granular surface is obtained, wherein the firing temperature is 1100-1130℃, and the time is 10-11h.

3. The ceramic article of claim 2, wherein, During the glazing, the gun head of the spray gun is adjusted after the preliminarily glazed ceramic body is allowed to stand for 10-20min.

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