A corrosion-resistant ceramic glaze and a method for preparing a ceramic product using the same

Abstract

The application discloses a kind of corrosion-resistant ceramic glaze and the method for preparing ceramic product with it, belong to ceramic technical field.A kind of corrosion-resistant ceramic glaze, by inner layer material and outer layer material are composed, inner layer material includes the following components: kaolin, quartz, zirconium carbonate, graphene, potassium feldspar, sodium feldspar and boron nitride 9~12 parts;Outer layer material includes the following components: epoxy resin, diatomite, graphene, basalt powder, cashew nut shell oil and diisopropanolamine.The corrosion-resistant ceramic product prepared has excellent corrosion resistance, and high gloss.

Description

Technical Field

[0001] This invention belongs to the field of ceramic technology, specifically relating to a corrosion-resistant ceramic glaze and a method for preparing ceramic products using the same. Background Technology

[0002] As society develops, consumers have different demands for ceramic products. Some pursue aesthetically pleasing ceramic handicrafts, while others seek practical daily-use ceramic products. Among these, daily-use ceramic products, such as tableware and kitchenware, sometimes come into contact with solids or liquids of different acids and alkalis. If they do not possess acid and alkali resistance, their lifespan will be short.

[0003] Traditional ceramic products are fired after glazing. If the resulting smooth glazed ceramics are not strong enough, they are very easy to break. Therefore, there is an urgent need to develop a ceramic glaze with high strength and safe corrosion resistance. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a ceramic glaze with high strength and safe corrosion resistance.

[0005] The present invention adopts the following technical solution: A corrosion-resistant ceramic glaze, comprising an inner layer and an outer layer, wherein the inner layer comprises the following components in parts by mass: 60-72 parts kaolin, 10-15 parts quartz, 8-11 parts zirconium carbonate, 10-12 parts graphene, 7-10 parts potassium feldspar, 7-10 parts sodium feldspar, and 9-12 parts boron nitride. The outer layer material comprises the following components by mass parts: 75-80 parts epoxy resin, 8-11 parts diatomaceous earth, 11-15 parts graphene, 12-15 parts basalt powder, 10-13 parts cashew nut shell oil, and 11-13 parts diisopropanolamine.

[0006] The method for preparing ceramic products using the aforementioned corrosion-resistant ceramic glaze includes the following steps: Step 1: Prepare the inner layer material: According to the stated mass fractions, kaolin, quartz, zirconium carbonate, potassium feldspar, sodium feldspar, and boron nitride are mixed and crushed to obtain crushed material. Graphene is then mixed with the crushed material and ball-milled to obtain the inner layer material. Step 2: Preparation of outer layer material According to the stated mass fractions, the epoxy resin is continuously stirred, and then cashew nut shell oil, diatomaceous earth, graphene, basalt powder and diisopropanolamine are added sequentially at intervals of 5-10 minutes to obtain the outer layer material; Step 3: Coating the inner layer material and firing. Add water to the inner layer material obtained in step one to adjust the Baumé degree to 46~50, then coat it on the ceramic body, dry it and fire it, and after cooling, obtain the fired product. Step 4: Apply outer layer material and cure. The outer layer material obtained in step two is coated onto the surface of the fired product obtained in step three, cured, and cooled to obtain a corrosion-resistant ceramic product.

[0007] Furthermore, during the ball milling process described in step one, a ball:water:crushed material mass ratio of 1:1.1 to 1.3:1 is used for ball milling, the ball milling speed is 500 to 600 r / min, and the ball milling time is 24 to 36 h.

[0008] Furthermore, the drying temperature in step three is 70~80℃, and the drying time is 12~24h.

[0009] Furthermore, the specific firing process described in step three is as follows: The temperature is increased to 1230-1250℃ at a heating rate of 0.9-1.1℃ / min, held at the temperature for 2-3 hours, and then cooled to obtain the fired product.

[0010] Furthermore, the coating thickness in step four is 0.9~1.1mm, and the curing process involves heating to 100~110℃ at a heating rate of 0.6~0.8℃ / min and holding at that temperature for 60~70min.

[0011] Compared with the prior art, the present invention has the following advantages: The corrosion-resistant ceramic glaze of this invention consists of an inner layer and an outer layer. The inner layer is mainly composed of kaolin, with quartz, zirconium carbonate, and boron nitride used in combination, along with the addition of graphene. This mixture forms the inner glaze layer, ensuring the ceramic's shape and fixing the glaze's outline. The outer layer is mainly composed of epoxy resin, with diisopropanolamine as the curing agent, and includes diatomaceous earth, graphene, basalt powder, and cashew nutshell oil. After curing, it forms a transparent outer glaze layer, achieving the required corrosion resistance. Detailed Implementation

[0012] All raw materials used in this invention are commercially available products. Example 1

[0013] A corrosion-resistant ceramic glaze, comprising an inner layer and an outer layer, wherein the inner layer comprises the following components in parts by mass: 60 parts kaolin, 10 parts quartz, 8 parts zirconium carbonate, 10 parts graphene, 7 parts potassium feldspar, 7 parts sodium feldspar, and 9 parts boron nitride. The outer layer material comprises the following components by mass parts: 75 parts epoxy resin, 8 parts diatomaceous earth, 11 parts graphene, 12 parts basalt powder, 10 parts cashew nut shell oil, and 11 parts diisopropanolamine.

[0014] A method for preparing ceramic products using corrosion-resistant ceramic glazes includes the following steps: Step 1: Prepare the inner layer material: According to the stated mass fractions, kaolin, quartz, zirconium carbonate, potassium feldspar, sodium feldspar, and boron nitride are mixed and crushed to obtain crushed material. Graphene is then mixed with the crushed material and ball-milled. During ball milling, the mass ratio of ball:water:crushed material is 1:1.1:1. The ball milling speed is 500 r / min, and the ball milling time is 24 h to obtain the inner layer material. Step 2: Preparation of outer layer material According to the stated mass fractions, the epoxy resin was continuously stirred, and then cashew nut shell oil, diatomaceous earth, graphene, basalt powder and diisopropanolamine were added sequentially at 5-minute intervals to obtain the outer layer material; Step 3: Coating the inner layer material and firing. The inner layer material obtained in step one is mixed with water to a Baumé degree of 46, then coated onto the ceramic body and dried at a temperature of 70°C for 12 hours. Then it is fired by heating at a rate of 0.9°C / min to 1230°C and holding at that temperature for 2 hours. After cooling, the fired product is obtained. Step 4: Apply outer layer material and cure. The outer layer material obtained in step two is coated onto the surface of the fired product obtained in step three, with a coating thickness of 0.9 mm. Then, a curing treatment is performed, with the temperature raised to 100°C at a heating rate of 0.6°C / min and held at that temperature for 60 min. After cooling, a corrosion-resistant ceramic product is obtained. Example 2

[0015] A corrosion-resistant ceramic glaze, comprising an inner layer and an outer layer, wherein the inner layer comprises the following components in parts by mass: 72 parts kaolin, 15 parts quartz, 11 parts zirconium carbonate, 12 parts graphene, 10 parts potassium feldspar, 10 parts sodium feldspar, and 12 parts boron nitride. The outer layer material comprises the following components by mass parts: 80 parts epoxy resin, 11 parts diatomaceous earth, 15 parts graphene, 15 parts basalt powder, 13 parts cashew nut shell oil, and 13 parts diisopropanolamine.

[0016] A method for preparing ceramic products using corrosion-resistant ceramic glazes includes the following steps: Step 1: Prepare the inner layer material: According to the stated mass fractions, kaolin, quartz, zirconium carbonate, potassium feldspar, sodium feldspar, and boron nitride are mixed and crushed to obtain crushed material. Graphene is then mixed with the crushed material and ball-milled. During ball milling, the mass ratio of ball:water:crushed material is 1:1.3:1. The ball milling speed is 5600 r / min, and the ball milling time is 36 h to obtain the inner layer material. Step 2: Preparation of outer layer material According to the stated mass fractions, the epoxy resin was continuously stirred, and then cashew nut shell oil, diatomaceous earth, graphene, basalt powder and diisopropanolamine were added sequentially at 10-minute intervals to obtain the outer layer material; Step 3: Coating the inner layer material and firing. The inner layer material obtained in step one is mixed with water to a Baumé degree of 50, then coated onto the ceramic body and dried at a temperature of 80°C for 24 hours. Then it is fired by heating to 1250°C at a heating rate of 1.1°C / min and holding at that temperature for 3 hours. After cooling, the fired product is obtained. Step 4: Apply outer layer material and cure. The outer layer material obtained in step two is coated onto the surface of the fired product obtained in step three. The coating thickness is 1.1 mm. Then, a curing treatment is performed. The temperature is raised to 110°C at a heating rate of 0.8°C / min and held at the temperature for 70 min. After cooling, a corrosion-resistant ceramic product is obtained. Example 3

[0017] A corrosion-resistant ceramic glaze, comprising an inner layer and an outer layer, wherein the inner layer comprises the following components in parts by mass: 68 parts kaolin, 13 parts quartz, 10 parts zirconium carbonate, 11 parts graphene, 9 parts potassium feldspar, 8 parts sodium feldspar, and 10 parts boron nitride. The outer layer material comprises the following components by mass parts: 78 parts epoxy resin, 10 parts diatomaceous earth, 13 parts graphene, 14 parts basalt powder, 11 parts cashew nut shell oil, and 12 parts diisopropanolamine.

[0018] A method for preparing ceramic products using corrosion-resistant ceramic glazes includes the following steps: Step 1: Prepare the inner layer material: According to the stated mass fractions, kaolin, quartz, zirconium carbonate, potassium feldspar, sodium feldspar, and boron nitride are mixed and crushed to obtain crushed material. Graphene is then mixed with the crushed material and ball-milled. During ball milling, a mass ratio of ball:water:crushed material = 1:1.2:1 is used. The ball milling speed is 550 r / min, and the ball milling time is 30 h to obtain the inner layer material. Step 2: Preparation of outer layer material According to the stated mass fractions, the epoxy resin was continuously stirred, and then cashew nut shell oil, diatomaceous earth, graphene, basalt powder and diisopropanolamine were added sequentially at 8-minute intervals to obtain the outer layer material; Step 3: Coating the inner layer material and firing. The inner layer material obtained in step one is mixed with water to a Baumé degree of 48, then coated onto the ceramic body and dried at a temperature of 75°C for 20 hours. Then it is fired by heating to 1240°C at a heating rate of 1.0°C / min and holding at that temperature for 2.5 hours. After cooling, the fired product is obtained. Step 4: Apply outer layer material and cure. The outer layer material obtained in step two is coated onto the surface of the fired product obtained in step three, with a coating thickness of 1.0 mm. Then, a curing treatment is performed, with the temperature raised to 105°C at a heating rate of 0.7°C / min and held at that temperature for 65 min. After cooling, a corrosion-resistant ceramic product is obtained.

[0019] Comparison Example

[0020] A corrosion-resistant ceramic glaze, comprising an inner layer and an outer layer, wherein the inner layer comprises the following components in parts by mass: 68 parts kaolin, 13 parts quartz, 10 parts zirconium carbonate, 11 parts graphene, 9 parts potassium feldspar, 8 parts sodium feldspar, and 10 parts boron nitride. The outer layer material comprises the following components by weight: 78 parts epoxy resin, 10 parts diatomaceous earth, and 12 parts diisopropanolamine.

[0021] A method for preparing ceramic products using corrosion-resistant ceramic glazes includes the following steps: Step 1: Prepare the inner layer material: According to the stated mass fractions, kaolin, quartz, zirconium carbonate, potassium feldspar, sodium feldspar, and boron nitride are mixed and crushed to obtain crushed material. Graphene is then mixed with the crushed material and ball-milled. During ball milling, a mass ratio of ball:water:crushed material = 1:1.2:1 is used. The ball milling speed is 550 r / min, and the ball milling time is 30 h to obtain the inner layer material. Step 2: Preparation of outer layer material According to the stated mass fractions, the epoxy resin was continuously stirred, and then diatomaceous earth and diisopropanolamine were added sequentially at 8-minute intervals to obtain the outer layer material; Step 3: Coating the inner layer material and firing. The inner layer material obtained in step one is mixed with water to a Baumé degree of 48, then coated onto the ceramic body and dried at a temperature of 75°C for 20 hours. Then it is fired by heating to 1240°C at a heating rate of 1.0°C / min and holding at that temperature for 2.5 hours. After cooling, the fired product is obtained. Step 4: Apply outer layer material and cure. The outer layer material obtained in step two is coated onto the surface of the fired product obtained in step three. The coating thickness is 1.0 mm. Then, a curing treatment is performed. The temperature is raised to 105°C at a heating rate of 0.7°C / min and held at the temperature for 65 min. After cooling, a corrosion-resistant ceramic product is obtained.

[0022] The corrosion-resistant ceramic products obtained in Examples 1-3 of this invention and the corrosion-resistant ceramic products obtained in the control example were tested, wherein: The crack resistance performance of daily-use ceramics was tested according to GB / T 34252-2017 Test Method for Glaze Crack Resistance. The gloss was tested according to GB / T 3532-2022 Daily-use Porcelain. The test results are shown in Table 1 below: Table 1: Test Results

[0023] As can be seen from Table 1, the corrosion-resistant ceramic products prepared in Examples 1 to 3 have excellent corrosion resistance and high gloss.

[0024] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A corrosion-resistant ceramic glaze, characterized in that, It consists of an inner layer and an outer layer. The inner layer comprises the following components by mass parts: 60-72 parts kaolin, 10-15 parts quartz, 8-11 parts zirconium carbonate, 10-12 parts graphene, 7-10 parts potassium feldspar, 7-10 parts sodium feldspar, and 9-12 parts boron nitride. The outer layer material comprises the following components by mass parts: 75-80 parts epoxy resin, 8-11 parts diatomaceous earth, 11-15 parts graphene, 12-15 parts basalt powder, 10-13 parts cashew nut shell oil, and 11-13 parts diisopropanolamine. The method for preparing ceramic products using the aforementioned corrosion-resistant ceramic glaze includes the following steps: Step 1: Prepare the inner layer material: According to the stated mass fractions, kaolin, quartz, zirconium carbonate, potassium feldspar, sodium feldspar, and boron nitride are mixed and crushed to obtain crushed material. Graphene is then mixed with the crushed material and ball-milled to obtain the inner layer material. Step 2: Preparation of outer layer material According to the stated mass fractions, the epoxy resin is continuously stirred, and then cashew nut shell oil, diatomaceous earth, graphene, basalt powder and diisopropanolamine are added sequentially at intervals of 5-10 minutes to obtain the outer layer material; Step 3: Coating the inner layer material and firing. Add water to the inner layer material obtained in step one to adjust the Baumé degree to 46~50, then coat it on the ceramic body, dry it and fire it, and after cooling, obtain the fired product. Step 4: Apply outer layer material and cure. The outer layer material obtained in step two is coated onto the surface of the fired product obtained in step three, cured, and cooled to obtain a corrosion-resistant ceramic product.

2. The corrosion-resistant ceramic glaze according to claim 1, characterized in that, In step one, the ball milling is carried out with a mass ratio of ball:water:crushed material = 1:1.1~1.3:1, the ball milling speed is 500~600 r / min, and the ball milling time is 24~36 h.

3. The corrosion-resistant ceramic glaze according to claim 1, characterized in that, The drying temperature in step three is 70~80℃, and the drying time is 12~24h.

4. The corrosion-resistant ceramic glaze according to claim 1, characterized in that, The specific firing process described in step three is as follows: Heat to 1230-1250℃ at a heating rate of 0.9-1.1℃ / min and hold at that temperature for 2-3 hours.

5. The corrosion-resistant ceramic glaze according to claim 1, characterized in that, The coating thickness in step four is 0.9~1.1mm. During the curing process, the temperature is raised to 100~110℃ at a heating rate of 0.6~0.8℃ / min and held at that temperature for 60~70min.

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