High-strength magnesia porcelain ultrathin plate and preparation method thereof

A magnesia porcelain, high-strength technology, applied in the field of high-strength magnesia porcelain ceramic ultra-thin plate and its preparation

Active Publication Date: 2015-05-06
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to MgO-A1 2 o 3 -SiO 2 The ternary system phase diagram systematically analyzes the influence of the amount of talc, feldspar and kaolin on the strength of magnesia porcelain, and provides a magnesia porcelain formula with high flexural strength and wide firing range. Using this formula, water system casting is further adopted By optimizing the preparation process and selecting appropriate dispersants, plasticizers and binders, the problems of une

Method used

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  • High-strength magnesia porcelain ultrathin plate and preparation method thereof
  • High-strength magnesia porcelain ultrathin plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The following formula is used for batching: talc 70.3wt%, kaolin 12.7wt%, potassium feldspar 6.8wt%, barium carbonate 2.9wt%, limestone 4.9wt%, zinc oxide 2.4wt%.

[0050] The casting slurry of magnesia porcelain mainly includes four stages of high-speed ball milling, fast grinding and slow grinding to disperse, slow grinding for plasticizing and viscosifying, and vacuum stirring for defoaming. The casting slurry can be prepared in strict accordance with the requirements to obtain better casting performance. cast slurry.

[0051] (a) High-speed ball milling stage: the prepared magnesia porcelain billet is ball milled for 1.5 hours in a planetary ball mill with a material:ball:water ratio of 1:1:0.9 and a rotational speed of 350r / min, and then baked at a temperature of 100°C to 120°C Dry and set aside. This process makes the large-grained minerals reach a certain fineness (the fineness of the billet is less than 250 mesh, that is, the particle diameter is less than 61um...

Embodiment 2

[0055] Firstly, the ingredients are prepared according to the following formula: talc 71.4wt%, kaolin 12.7wt%, potassium feldspar 7.4wt%, barium carbonate 2.1wt%, dolomite 4.7wt.%, zinc oxide 1.7wt%.

[0056]The casting slurry of magnesia porcelain mainly includes four stages of high-speed ball milling, fast grinding and dispersion, slow grinding for plasticizing and viscosifying, and vacuum stirring and defoaming. Extension slurry. (a) High-speed ball milling stage: the prepared magnesia ceramic billet is ball milled for 45 minutes in a planetary ball mill with a material:ball:water ratio of 1:1:0.9 and a rotational speed of 350r / min, and then dried at a temperature of 100°C to 120°C spare. This process makes the large-grained minerals reach a certain fineness (the fineness of the billet is less than 250 mesh, that is, the particle diameter is less than 61um), and the raw materials are mixed evenly; (b) first fast ball milling and then slow ball milling: through electrostati...

Embodiment 3

[0060] The following formula is used for batching: talc 73.2wt%, kaolin 10.6wt%, potassium feldspar 7.3wt%, barium carbonate 2.6wt%, calcite 4.1wt.%, zinc oxide 2.2wt.%.

[0061] Magnesia porcelain casting slurry mainly includes four stages of high-speed ball milling, fast grinding dispersion, slow grinding plasticization, vacuum stirring and defoaming, and the preparation of casting slurry strictly according to the requirements can obtain casting slurry with better casting performance material. (a) High-speed ball milling stage: the prepared magnesia porcelain billet is milled for 3 hours in a planetary ball mill with a material:ball:water ratio of 1:1:0.9, a speed of 350r / min, and then dried at a temperature of 100°C to 120°C spare. This process makes the large-grained minerals reach a certain fineness (the fineness of the billet is less than 250 mesh, that is, the particle diameter is less than 61um), and the raw materials are mixed evenly; (b) first fast ball milling and ...

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Abstract

The invention relates to a high-strength magnesia porcelain ultrathin plate with thickness of 0.5-1.5mm and strength of 160MPa-200MPa. The high-strength magnesia porcelain ultrathin plate is prepared from the following mineral raw materials in percentage by mass through an aqueous tape casting technology: 70wt%-75wt% of talcum, 10wt%-15wt% of kaolin, 6wt%-10wt% of potassium feldspar, 2wt%-5wt% of barium carbonate, 1wt%-3wt% of zinc oxide, and 4wt%-6wt% of other alkaline earth metallic minerals. The slurry mixing process mainly comprises four stages including high-speed ball milling, dispersing by means of rapid milling and slow milling, plastifying and tackifying by means of slow milling, and stirring for removing bubbles under a vacuum condition; and then, the high-strength porcelain ultrathin plate is obtained through a tape casting firing step. The high-strength magnesia porcelain ultrathin plate has the characteristics of light weight, excellent light transmission, exquisite texture, high whiteness, and on the like; moreover, the high-strength magnesia porcelain ultrathin plate is easy to implement in industrialization, and has stability and high uniform performance in large-scale preparation.

Description

technical field [0001] The invention relates to a high-strength magnesia ceramic ultra-thin plate and a preparation method thereof, belonging to the technical field of traditional ceramic preparation. Background technique [0002] Generally, traditional ceramics can be divided into feldspar porcelain, bone china and magnesia porcelain according to the quality of porcelain. Among them, the flexural strength of feldspar porcelain is generally about 80MPa, and that of bone china is above 137Mpa. The flexural strength of magnesia porcelain is about 145MPa. Magnesia porcelain plays an important role in electric porcelain because of its good insulation. Magnesia porcelain also has the advantages of high mechanical strength, good thermal stability, fine and white porcelain, and good light transmission. The daily-use porcelain tableware, Compared with traditional porcelain, tea sets have a different charm, and are very popular in domestic and foreign markets. The ultra-thin magnes...

Claims

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Application Information

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IPC IPC(8): C04B35/16C04B35/622
Inventor 程亮罗凌虹石纪军吴也凡孙良良徐序
Owner JINGDEZHEN CERAMIC INSTITUTE
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