Sanitary ceramic matt antibacterial cracked glaze and preparation method thereof

Abstract

The invention discloses a sanitary ceramic matt antibacterial cracked glaze and a preparation method thereof.The formula of the sanitary ceramic matt antibacterial cracked glaze comprises, by weight, 38-46 parts of quartz, 12-18 parts of potassium feldspar, 3-5 parts of kaolin, 2-5 parts of zinc oxide, 16-30 parts of wollastonite, 5-25 parts of zirconium silicate, 0.01-0.05 part of tea spar and 0.02-1 part of sodium carboxymethyl cellulose.The effect of the matt cracked glaze is generated through interaction of wollastonite, tea spar and zirconium silicate; a small amount of thorium-232 contained in the tea spar and potassium-40 contained in the zirconium silicate generate certain radioactivity, and the antibacterial ability is generated under the dosage harmless to the human body.

Description

Technical Field

[0001] The invention belongs to the technical field of crackle glaze production, and in particular relates to a matte antibacterial crackle glaze for sanitary ceramics and a preparation method thereof. Background Art

[0002] Crackle glaze is a traditional glaze in my country with a history of thousands of years. In recent years, the requirements of consumers for material and cultural life have also increased rapidly. More and more people are buying and collecting ceramic crackle glaze products, and the market share of such products is far from meeting the needs of consumers.

[0003] The most common method of preparing crackle glaze is to use potassium feldspar, quartz, kaolin and magnesium carbonate as raw materials, and use the hydrolysis performance of magnesium carbonate to form a difference in shrinkage ratio, thereby generating cracks. However, due to the many defects in the structure of this crackle glaze, the crack grid is difficult to control, but reducing the proportion of magnesium carbonate will make the crack effect worse. Therefore, under the premise of ensuring the crackle glaze pattern, producing a matte crackle glaze with a moderate grid has become an urgent problem to be solved. Summary of the invention

[0004] The purpose of the present invention is to provide a matte antibacterial crackle glaze for sanitary ceramics. By improving the formula, the interaction between wollastonite, citrine and zirconium silicate is utilized to produce the effect of matte crackle glaze, and a small amount of thorium-232 and potassium-40 are utilized to produce antibacterial properties, thereby forming a matte crackle glaze with antibacterial effect.

[0005] In order to achieve the above purpose, the following technical solutions are adopted: A matte antibacterial crackle glaze for sanitary ceramics comprises, by weight, 38-46 parts of quartz, 12-18 parts of potassium feldspar, 3-5 parts of kaolin, 2-5 parts of zinc oxide, 16-30 parts of wollastonite, 5-25 parts of zirconium silicate, 0.01-0.05 parts of citrine and 0.02-1 parts of sodium carboxymethyl cellulose.

[0006] By adopting the above technical scheme, wollastonite, citrine and zirconium silicate are added to the original matte glaze formula, and the low eutectic point is used to generate a matte microcrystalline phase, increase the internal stress of the glaze surface to generate cracks, and obtain a matte crackle glaze. In addition, citrine contains a small amount of thorium-232 and zirconium silicate contains potassium-40, which produces a certain radioactivity and has antibacterial ability at a dose that is harmless to the human body.

[0007] Furthermore, a matte antibacterial crackle glaze for sanitary ceramics comprises, by weight: 46 parts of quartz, 12 parts of potassium feldspar, 5 parts of kaolin, 5 parts of zinc oxide, 20 parts of wollastonite, 12 parts of zirconium silicate, 0.05 parts of citrine, and 0.2 parts of sodium carboxymethyl cellulose.

[0008] By adopting the above technical solution, the optimal value for preparing matte antibacterial crackle glaze for sanitary ceramics is achieved. According to this weight fraction, matte crackle glaze with moderate grid can be prepared.

[0009] Another object of the present invention is to provide a method for preparing a product made of matte antibacterial crackle glaze for sanitary ceramics, which method is simple and easy to operate.

[0010] In order to achieve the above purpose, the following technical solutions are adopted: A method for preparing a product made of matte antibacterial crackle glaze for sanitary ceramics comprises the following steps: S1. Weigh and mix quartz, potassium feldspar, wollastonite, zirconium silicate, zinc oxide, kaolin and citrine according to proportion to obtain a mixture; S2, weighing the mixture, then weighing water and sodium carboxymethyl cellulose and adding them to the mixture, wherein the weight ratio of the mixture, water and sodium carboxymethyl cellulose is 1000:600:1, and then ball milling is performed until the particles below 50 microns account for more than 99.95%, thereby obtaining a ball milled material; S3, filtering and removing iron from the ball mill to obtain a primary glaze slurry, wherein the mass of water accounts for 35-40% of the primary glaze slurry; S4, leaving the glaze slurry to stand for 12 hours to obtain a finished glaze; S5, using the finished glaze to glaze the green body of the sanitary ceramics, wherein the glazing thickness is 0.7-0.9 mm; S6. Firing at 1190~1210℃.

[0011] Since the matte crackle glaze is produced by improving the matte glaze formula and cracks are produced by the interaction between zirconium silicate, wollastonite and citrine, the method for producing the matte antibacterial crackle glaze for sanitary ceramics only requires ball milling, filtering and iron removal, which is relatively simple and easy to operate overall.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. The interaction of wollastonite, zirconium silicate and citrine is used to form a matte crackle glaze, enriching the types of ceramic glazes; 2. A small amount of thorium-232 contained in citrine and potassium-40 contained in zirconium silicate are used to produce a certain radioactivity, which produces antibacterial ability at a dose that is harmless to the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a glaze effect diagram of product 1 produced in Example 1 of the present invention; Figure 2 This is a glaze effect diagram of product 2 produced by Example 2 of the present invention; Figure 3 This is a glaze effect diagram of product 3 produced by Example 3 of the present invention; Figure 4 This is the glaze effect diagram of comparative example 1; Figure 5 This is the glaze effect diagram of comparative example 2; Figure 6 This is the glaze effect diagram of comparative example 3; Figure 7 This is the glaze effect diagram of comparative example 4; Figure 8 This is the glaze effect diagram of comparative example 5; Fig. 9 This is the glaze effect diagram of comparative example six. Implementation

[0014] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Unless otherwise specified, the raw materials and equipment selected in the present invention are all commercially available, and the quartz powder described in the embodiments of the present invention and the comparative examples are all ordinary quartz powder. Example

[0015] A product made of matte antibacterial crackle glaze for sanitary ceramics is prepared according to the following steps: In the first step, 38 kg of quartz, 18 kg of potassium feldspar, 16 kg of wollastonite, 5 kg of zirconium silicate, 2 kg of zinc oxide, 3 kg of kaolin and 0.01 kg of citrine are weighed and mixed to obtain a mixture.

[0016] In the second step, 50 kg of the mixture is weighed, and then 30 kg of water and 0.05 kg of sodium carboxymethyl cellulose are added, and ball milling is performed until the particles below 50 microns account for more than 99.95%, thereby obtaining a ball milled material.

[0017] In the third step, the ball mill is filtered, iron removed, and filter pressed to obtain the primary glaze slurry. After measurement, the mass of water at this time accounts for 38% of the total mass of the glaze slurry.

[0018] The fourth step is to let the initial glaze slurry obtained in the third step stand for 12 hours. The glaze slurry at this time is the finished glaze slurry.

[0019] The fifth step is to use the finished glaze slurry to glaze the body of the sanitary ceramics. When glazing, the glaze thickness can be 0.7~0.9mm.

[0020] Step six, firing at 1190~1210℃ to obtain product one.

[0021] The glaze effect of this product is as follows Figure 1 shown. Example

[0022] A product made of matte antibacterial crackle glaze for sanitary ceramics is prepared according to the following steps: In the first step, 39 kg of quartz, 13 kg of potassium feldspar, 17 kg of wollastonite, 6 kg of zirconium silicate, 3 kg of zinc oxide, 4 kg of kaolin and 0.02 kg of citrine are weighed and mixed to obtain a mixture.

[0023] In the second step, 50 kg of the mixture is weighed, and then 30 kg of water and 0.06 kg of sodium carboxymethyl cellulose are added, and ball milling is performed until the particles below 50 microns account for more than 99.95%, thereby obtaining a ball milled material.

[0024] In the third step, the ball mill is filtered, iron removed, and filter pressed to obtain a primary glaze slurry. According to measurement, the mass of water at this time accounts for 37% of the total mass of the primary glaze slurry.

[0025] The fourth step is to let the initial glaze slurry obtained in the third step stand for 12 hours. The glaze slurry at this time is the finished glaze slurry.

[0026] The fifth step is to use the finished glaze slurry to glaze the body of the sanitary ceramics. When glazing, the glaze thickness can be 0.7~0.9mm.

[0027] Step 6, firing at 1190~1210℃ to obtain product 2.

[0028] The glaze effect of product 2 is as follows Figure 2 shown. Example

[0029] A product made of matte antibacterial crackle glaze for sanitary ceramics is prepared according to the following steps: In the first step, 46 kg of quartz, 12 kg of potassium feldspar, 20 kg of wollastonite, 12 kg of zirconium silicate, 5 kg of zinc oxide, 5 kg of kaolin and 0.05 kg of citrine are weighed and mixed to obtain a mixture.

[0030] In the second step, 50 kg of the mixture is weighed, and then 30 kg of water and 0.2 kg of sodium carboxymethyl cellulose are added, and ball milling is performed until the particles below 50 microns account for more than 99.95%, thereby obtaining a ball milled material.

[0031] In the third step, the ball mill is filtered, iron removed, and filter pressed to obtain a primary glaze slurry. After measurement, the mass of water at this time accounts for 38% of the total mass of the primary glaze slurry.

[0032] The fourth step is to let the initial glaze slurry obtained in the third step stand for 12 hours. The glaze slurry at this time is the finished glaze slurry.

[0033] The fifth step is to use the finished glaze slurry to glaze the body of the sanitary ceramics. When glazing, the glaze thickness can be 0.7~0.9mm.

[0034] Step six, firing at 1190~1210℃ to obtain product three.

[0035] The glaze effect of product 3 is as follows Figure 3 shown.

[0036] Comparative Example 1: Compared with the product 3 produced in Example 3, wollastonite and zirconium silicate were not added in Comparative Example 1.

[0037] Comparative Example 2: Compared with the product 3 produced in Example 3, no citrine and wollastonite were added in Comparative Example 2.

[0038] Comparative Example 3: Compared with the product 3 produced in Example 3, no citrine and zirconium silicate were added in Comparative Example 3.

[0039] Comparative Example 4: Compared with the product 3 produced in Example 3, no wollastonite was added in Comparative Example 4.

[0040] Comparative Example 5: Compared with the product 3 produced in Example 3, no citrine was added in Comparative Example 5.

[0041] Comparative Example 6: Compared with the product 3 produced in Example 3, no zirconium silicate was added in Comparative Example 6.

[0042] The performance of Examples 1 to 3 and Comparative Examples 1 to 6 was tested and the results are shown in Table 1. Table 1 Performance test results Test items Pattern effect Embodiment 1 Matt fine crack Embodiment 2 Matt large mesh crack Embodiment 3 Matte mesh cracks Comparative Example 1 Matte and crack-free Comparative Example 2 Bright without cracks Comparative Example 3 Matte and crack-free Comparative Example 4 Raw firing without cracks Comparative Example 5 No cracks in glaze shrinkage Comparative Example 6 Bright without cracks From the above comparison, it can be seen that when wollastonite, citrine and zirconium silicate exist at the same time, due to their mutual effect, they present the effect of matte crackle glaze and have good antibacterial properties, while when wollastonite, citrine and zirconium silicate do not exist at the same time, they cannot present the effect of matte crackle glaze.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A matte antibacterial crackle glaze for sanitary ceramics, characterized in that: Calculated by weight: including 38-46 parts of quartz, 12-18 parts of potassium feldspar, 3-5 parts of kaolin, 2-5 parts of zinc oxide, 16-30 parts of wollastonite, 5-25 parts of zirconium silicate, 0.01-0.05 parts of citrine, and 0.02-1 parts of sodium carboxymethyl cellulose.

2. The matte antibacterial crackle glaze for sanitary ceramics according to claim 1, characterized in that: In parts by weight: 46 parts of quartz, 12 parts of potassium feldspar, 5 parts of kaolin, 5 parts of zinc oxide, 20 parts of wollastonite, 12 parts of zirconium silicate, 0.05 parts of citrine, and 0.2 parts of sodium carboxymethyl cellulose.

3. A method for preparing a product made of matte antibacterial crackle glaze for sanitary ceramics as claimed in claim 1, characterized in that: The steps include: S1. Weigh and mix quartz, potassium feldspar, wollastonite, zirconium silicate, zinc oxide, kaolin and citrine according to proportion to obtain a mixture; S2, weighing the mixture, then weighing water and sodium carboxymethyl cellulose and adding them to the mixture, wherein the weight ratio of the mixture, water and sodium carboxymethyl cellulose is 1000:600:1, and then ball milling is performed until the particles below 50 microns account for more than 99.95%, thereby obtaining a ball milled material; S3, filtering and removing iron from the ball mill to obtain a primary glaze slurry, wherein the mass of water accounts for 35-40% of the primary glaze slurry; S4, leaving the primary glaze slurry to stand for 12 hours to obtain a finished glaze; S5, using the finished glaze to glaze the green body of the sanitary ceramics, wherein the glazing thickness is 0.7-0.9 mm; S6. Firing at 1190~1210℃.

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