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Single-phase iolite transparent glaze with wear resistance and preparation method thereof

A single-phase cordierite and transparent technology, which is applied in the field of single-phase cordierite transparent wear-resistant glaze and its preparation, can solve the problems of high cost of raw materials, high energy consumption for firing, difficult removal of air bubbles, and reduced wear-resistant effect, so as to save The loss of mineral resources and energy, strong infrared absorption characteristics, and the effect of increasing the service life

Active Publication Date: 2017-08-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the particle size of the transparent frit is strictly required. If the particle size is too coarse and the base glaze has poor bonding force, it will easily peel off; if it is too fine, it will easily melt into the base glaze and reduce the wear resistance effect.
However, this patent does not explain in principle that there are transparent frit particles in the transparent glaze, and the glaze surface will be transparent, because if there are particles in the glaze surface, the viscosity around the particles is very large, and the air bubbles are difficult to get rid of; followed by transparent glaze and The bonding of the transparent frit is difficult to control, and there is no guarantee that the transparent frit particles will not react with the transparent glaze to precipitate other phase grains, because the transparent glaze and the transparent frit particles are both silicon-aluminum-calcium systems
[0004] Patent Nos. 103044080A and 103030435A for wear-resistant glazes for daily ceramics and their preparation methods disclose a method for glaze wear resistance. The wear resistance principle is to improve wear resistance with the help of free alumina, but due to its high aluminum content And high barium content will greatly increase the cost of raw materials and firing energy consumption, and the transparency of the glaze can only be achieved by controlling the high refractive index of the glass substrate (the refractive index of the substrate must be close to the refractive index of free alumina)

Method used

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  • Single-phase iolite transparent glaze with wear resistance and preparation method thereof
  • Single-phase iolite transparent glaze with wear resistance and preparation method thereof
  • Single-phase iolite transparent glaze with wear resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Use pure industrial raw materials to weigh SiO 2 (wt%): 46.11g; Al 2 o 3 (wt%): 17.25g; MgO (wt%): 26.64g; K 2 O (wt%): 3g; B 2 o 3 : 2g; TiO 2 (wt%): 5g.

[0036] (2) Add the raw materials weighed in step 1) into the ball mill tank for wet ball milling and mixing for 1 hour. According to ball stone: raw material = 2:1, add 3% CMC as plasticizer and 3% sodium polyphosphate for decondensation agent to keep the solid content at 60%.

[0037] (3) Glaze the slurry obtained in step 2 on the bisque-fired body, after natural air-drying, put it into a high-temperature furnace and keep it at 1350°C for 30 minutes to make a uniform glaze, and then cool it down to 1200°C at 5°C / min. ℃ for 30 minutes or lower the temperature to 1150 ℃ for 30 minutes at 5 ℃ / min, and finally cool down with the furnace to obtain a single-phase cordierite wear-resistant glaze. Its XRD pattern is as follows figure 1 .

Embodiment 2

[0039] (1) Use pure industrial raw materials to weigh SiO 2 (wt%): 46.11g; Al 2 o 3 (wt%): 27.51g; MgO (wt%): 16.38g; K 2 O (wt%): 3g; B 2 o 3 : 2g; TiO 2 (wt%): 5g.

[0040] (2) Add the raw materials weighed in step 1) into the ball mill tank for wet ball milling and mixing for 1 hour. According to ball stone: raw material = 2:1, add 1% CMC as plasticizer and 1% sodium polyphosphate as decondensation agent to keep the solid content at 50%.

[0041] (3) Glaze the slurry obtained in step 2 on the bisque-fired body, after natural air-drying, put it into a high-temperature furnace at 1400°C to make a uniform glaze surface, and then cool down to 1200°C at 5°C / min or 1150°C for 30 minutes, the single-phase cordierite wear-resistant glaze can be obtained, and its XRD pattern is as follows figure 2 .

Embodiment 3

[0043] (1) Use mineral raw materials to weigh 57 parts by weight of kaolin, 33 parts by weight of talc, 6 parts by weight of fused silica, and 4 parts by weight of albite (the chemical composition of which also belongs to the specified range).

[0044] (2) Add the raw materials weighed in step 1) into the ball mill tank and carry out wet ball milling and mixing for 1 hour. According to ball stone: raw material = 2:1, add 3% CMC as plasticizer and 3% sodium polyphosphate for decondensation agent to keep the solid content at 60%.

[0045] (3) Glaze the slurry obtained in step 2 on the bisque-fired body, after natural air-drying, put it into a high-temperature furnace at 1300°C to make a uniform glaze surface, and then cool down to 1150°C at 7°C / min to keep it warm 40min, the single-phase cordierite wear-resistant glaze can be obtained, and its XRD pattern is as follows image 3 , as shown in the electron microscope Figure 4 , as shown in the figure, there are a large number o...

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Abstract

The invention discloses a single-phase iolite transparent glaze with wear resistance. The glaze comprises the following components in parts by weight: 17-33% of Al2O3, 11-28% of MgO, 0.5-3% of alkali metal oxides, 0-5% of CaO, 1-3% of B2O3, 0-7% of TiO2, and the balance being SiO2. The invention also discloses a preparation method of the single-phase iolite transparent glaze with wear resistance. The method comprises the following steps: (1) raw materials are weighed, ball milling is carried out for mixing and pulping, and slurry is obtained; (2) the slurry is glazed on a blank after biscuiting; (3) after glazing, the blank is insulated at 1300-1400 DEG C for 30-40 minutes, and the single-phase iolite transparent glaze with wear resistance is obtained. The wear resistance of the traditional single-phase iolite transparent glaze is improved, and at the same time utilization rate of raw materials is improved.

Description

technical field [0001] The invention relates to a glaze and a preparation method thereof, in particular to a single-phase cordierite transparent wear-resistant glaze and a preparation method thereof. Background technique [0002] The molecular formula of cordierite is 2MgO 2Al 2 o 3 ·5SiO2 2 , it has three crystal forms. It exists in the form of μ-cordierite at low temperature, also known as magnesium aluminum silicate, which belongs to the rhombohedral crystal system; crystallizes at 950°C to form β-cordierite, which belongs to the orthorhombic crystal system and exists in nature. A form of α-cordierite at high temperature, which belongs to the hexagonal plate. Because of its low thermal expansion coefficient, low thermal conductivity, good thermal shock resistance, low dielectric constant, and low dielectric loss, cordierite is widely used in automobile exhaust emissions, foam ceramics, honeycomb ceramics, and turbine engines. As well as various aspects of industrial h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/14C03C8/20C04B41/86
CPCC03C8/14C03C8/20C04B41/5022C04B41/86C04B41/4535
Inventor 吕明陈鹏彭诚饶平根吴建青
Owner SOUTH CHINA UNIV OF TECH