Technology for preparing ultra-low-temperature glaze and formula

A low-temperature glaze and formula technology, applied in the field of fine ceramics, can solve the problems of high toxicity, unsuitable for long-term use, and environmental pollution, and achieve the effects of short firing cycle, huge economic and social benefits, and non-toxic raw materials

Inactive Publication Date: 2010-09-08
WUYI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the ultra-low temperature glazes are generally based on lead and barium, which are highly toxic and pollute the environment, so they are not suitable for long-term use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Coat a layer of glaze film on the quick-fired body, and the glaze formula is (mass percentage): borax (0.38); weathered potassium feldspar (0.35); calcium oxide (0.09); zinc oxide (0.18). Put the painted semi-finished product into the automatic tunnel kiln, the program controls the automatic temperature rise, control the heating rate at 25°C / min, keep it at 1100°C for 20 minutes, then rapidly cool to 750°C, and then follow the furnace to room temperature, and finally get the finished product .

Embodiment 2

[0014] A layer of glaze film is coated on the quick-fired body, and the glaze formula is (weight percent): borax (0.45); weathered potassium feldspar (0.35); calcium oxide (0.05); zinc oxide (0.15). Put the painted semi-finished product into the automatic tunnel kiln, the program controls the automatic temperature rise, control the heating rate at 25°C / min, keep it at 1000°C for 20 minutes, then rapidly cool to 750°C, and then follow the furnace to room temperature, and finally get the finished product .

Embodiment 3

[0016] Coat a layer of glaze film on the quick-fired body, and the glaze formula is (mass percentage): borax (0.5); weathered potassium feldspar (0.35); calcium oxide (0.05); zinc oxide (0.10). Put the painted semi-finished product into the automatic tunnel kiln, the program controls the automatic temperature rise, control the heating rate at 25°C / min, keep it at 900°C for 20 minutes, then rapidly cool to 750°C, and then follow the furnace to room temperature, and finally get the finished product .

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PUM

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Abstract

The invention discloses a process for preparing an ultra-low-temperature glaze and a formula and belongs to the field of the development and application of glazes. The annealing temperature of the glaze is reduced by regulating the formula of the glaze. The process is characterized by preparing a novel low-temperature glaze by taking borax, weathered potassium-feldspar, calcium oxide and zinc oxide as raw materials. The glaze comprises the following components in percentage by mass: borax (0.3 to 0.9), weathered potassium-feldspar (0.05 to 0.35), calcium oxide (0.03 to 0.18) and zinc oxide (0.03 to 0.18). The sintering temperature can be adjusted between 700 and 1,050 DEG C by changing the content of the borax and keeping the content proportion of other components invariable. The preparation process comprises the following steps of: pre-treating a blank at first and then applying the glaze on the blank body to form a coating with the thickness of 0.3 to 0.8mm. The process and the formula have the advantages of no toxic or side effect of raw materials, low cost of raw materials, simple and practical preparation method, low sintering temperature, short temperature preservation time, great energy source conservation, high surface glossiness of the glaze and good decoration effect.

Description

1. Technical field [0001] The invention relates to ultra-low temperature glazing technology and formula, specifically refers to a method for preparing a novel low-temperature glaze as raw materials from borax, weathered potassium, calcium oxide and zinc oxide, and belongs to the field of fine ceramics. 2. Background technology [0002] At present, the firing of various traditional ceramic industrial products that are mass-produced and widely used at home and abroad all have the characteristics of high temperature and long cycle, and the performance of daily-use enamel is more obvious due to its high performance requirements. Generally speaking, the firing temperature of ordinary daily-use porcelain is above 1250°C, and the firing cycle is above 15 hours. Therefore, in the ceramic industry, a large part of the product cost comes from the consumption of fuel. In foreign countries, the fuel cost accounts for about 25% of the total production cost, while in our country it is of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/86C03C8/04
Inventor 尹荔松胡社军范海陆刘志平唐贤信安科云
Owner WUYI UNIV
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