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Daily used reinforced ceramic and its preparation process

A technology for strengthening porcelain and daily use, which is applied in applications, clay products, household appliances, etc. It can solve the problems of narrow firing temperature range of porcelain bodies, difficult control of thermal stability, narrow firing temperature range, etc., and achieve easy industrialization Popularization, wide range of firing temperature, and low production difficulty

Inactive Publication Date: 2007-08-08
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] High-alumina reinforced porcelain is a ceramic material made by adding 10-30wt% industrial alumina to the traditional daily-use porcelain ternary system ingredients. It has high bending strength (up to 140Mpa or more), good impact toughness, and good thermal stability. It is the leading product of strengthened porcelain at present, but the whiteness of the porcelain body is poor, almost no light transmittance, high volume density and high product cost
[0005] High-silicon reinforced porcelain is based on the K2O(Na2O)-AL2O3-SiO2 ternary system. The ceramic products are made of fine and uniformly distributed quartz crystal phases. The porcelain body has good light transmittance and mechanical strength. Reinforced porcelain is required, but its firing temperature range is narrow, the degree of deformation is large, and the thermal stability is difficult to control
[0006] Talc porcelain is a daily-use fine porcelain based on the talc-potassium feldspar-clay ternary system. It has high whiteness, good light transmittance and high bending strength. However, the firing temperature range of the porcelain body is very narrow, only 15°C, the firing temperature range is the narrowest among reinforced porcelain materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of reinforced porcelain, whose body mainly includes the following components: 65% talc (mass percentage, the same below), 18% albite, 10% kaolin, and 7% clay.

[0031] The chemical composition of the green body is: SiO 2 67.00%, Al 2 o 3 8.19%, CaO 0.93%, MgO2 1.65%, K 2 O 0.18%, Na 2 O 1.66%.

[0032] The chemical composition of albite in the green body is: SiO 2 73.45%, Al 2 o 3 16.54%, CaO0.35%, MgO0.15%, K 2 O 0.50%, Na 2 O 8.85%, loss on ignition 0.34%.

[0033] In the microstructure of the porcelain body, the crystal phase components are: original enstatite (MgO·SiO 2 ) 100.00%.

[0034] Its production process is as follows:

[0035] The preparation process of bisque porcelain body: talc, albite, clay, and kaolin are separately finely ground by wet ball milling, and each raw material reaches the stated particle composition [the cumulative percentage of particles not greater than 10um (micrometer) accounts for more than 90%] Finally, mix acc...

Embodiment 2

[0038] A kind of strengthened porcelain, its body includes the following components: 70% of talc (mass percentage, the same below), 15% of albite, 10% of kaolin, and 5% of clay.

[0039] The chemical composition of the green body is: SiO 2 66.58%, Al 2 o 3 7.38%, CaO 0.94%, MgO2 3.20%, K 2 O 0.14%, Na 2 O 1.38%.

[0040] The chemical composition of albite in the green body is: SiO 2 72.45%, Al 2 o 3 16.24%, CaO0.35%, MgO0.15%, K 2 O 0.90%, Na 2 O 9.45%, loss on ignition 0.46%

[0041] In the microstructure of the porcelain body, the crystal phase components are: original enstatite (MgO·SiO 2 )98.00%, quartz 2.00%.

[0042] Its production process is as follows:

[0043] The preparation process of the bisque porcelain body: talc, albite, clay, and kaolin are separately finely ground by wet ball milling, and each raw material reaches the stated particle composition [the cumulative percentage of particles not greater than 10um (micrometer) accounts for more than 90%]...

Embodiment 3

[0046] A strengthened porcelain, the body of which includes the following components: 75% talc (mass percentage, the same below), 13% albite, 10% kaolin, and 2% clay.

[0047] The chemical composition of the green body is: SiO 2 66.14%, Al 2 o 3 6.60%, CaO 0.93%, MgO2 4.69%, K 2 O 0.09%, Na 2 O 1.18%.

[0048] The chemical composition of albite in the green body is: SiO 2 72.45%, Al 2 o 3 16.24%, CaO0.35%, MgO0.15%, K 2 O 0.90%, Na 2 O 9.45%, loss on ignition 0.46%

[0049] In the microstructure of the porcelain body, the crystal phase components are: original enstatite (MgO·SiO 2 ) 97.00%, quartz 3.00%.

[0050] Its production process is as follows:

[0051] The preparation process of the bisque porcelain body: talc, albite, clay, and kaolin are separately finely ground by wet ball milling, and each raw material reaches the stated particle composition [the cumulative percentage of particles not greater than 10um (micrometer) accounts for more than 90%] Finall...

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Abstract

A strengthened ceramic for daily purpose is proportionally prepared from albite, talc and clay. Its preparing process features sintering twice respectively at 1250-1350 deg. C and at 1100-1200 deg. C. Its advantages are fine quality, high whiteness, and high strength and thermal stability.

Description

technical field [0001] The invention relates to daily-use strengthened porcelain and a preparation method thereof, belonging to the field of high-grade daily-use fine porcelain. Background technique [0002] Reinforced porcelain is a very popular high-grade daily-use ceramics in the domestic and foreign markets. Its main features are the high impact strength and bending strength of the material, and good thermal stability. Reinforced porcelain products are not easy to touch the edge of the break, suitable for high-temperature disinfection, mechanical washing and rapid heating in microwave ovens. Before 1975, high-strength low-temperature porcelain appeared in the Soviet Union; before 1983, West Germany doubled the strength of daily-use ceramics by adjusting the composition on the basis of the three components of ceramics; in 1989, nearly 50 ceramic companies in Japan invested in Japanese ceramics. With the research of strengthened porcelain, the strength of the strengthene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/16C04B35/20C04B35/622C04B33/34
Inventor 王志义李辉史献峰
Owner QINGDAO UNIV OF SCI & TECH
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