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High-hardness wollastonite glaze slip and preparation method thereof
The invention discloses a formula of wollastonite glaze slip for preparing a high-strength glaze surface of sanitary ceramics. The wollastonite glaze slip is prepared from the following raw materials in parts by mass: 28.0-33.0 parts of potash feldsphar, 24.0-27.0 parts of quartz, 7.0-8.0 parts of calcite, 12.0-15.0 parts of wollastonite, 3.0-5.0 parts of kaolin, 2.0-3.5 parts of calcinedtalc, 3.0-4.0 parts of zinc oxide, 8.0-10.5 parts of zirconium silicate, 1.0-2.0 parts of aluminum oxide and 1.0-2.0 parts of low-temperature frits. A great deal of wollastonite is introduced to the glaze slip, the calcinedtalc is pre-sintered, air bubbles in the glaze slip are reduced through reducing crystal water and carbonates in the raw materials, and aggregation is caused under the action of generating the frits through partial melting by virtue of disordered arrangement of acicular crystals of wollastonite to form an interwoven structure; and the average Vickers hardness of a glaze surface is higher than 700, so that the mechanical strength of the glaze surface is greatly improved.
High-hardness wollastonite glaze slip and preparation method thereof
The invention discloses a formula of wollastonite glaze slip for preparing a high-strength glaze surface of sanitary ceramics. The wollastonite glaze slip is prepared from the following raw materials in parts by mass: 28.0-33.0 parts of potash feldsphar, 24.0-27.0 parts of quartz, 7.0-8.0 parts of calcite, 12.0-15.0 parts of wollastonite, 3.0-5.0 parts of kaolin, 2.0-3.5 parts of calcinedtalc, 3.0-4.0 parts of zinc oxide, 8.0-10.5 parts of zirconium silicate, 1.0-2.0 parts of aluminum oxide and 1.0-2.0 parts of low-temperature frits. A great deal of wollastonite is introduced to the glaze slip, the calcinedtalc is pre-sintered, air bubbles in the glaze slip are reduced through reducing crystal water and carbonates in the raw materials, and aggregation is caused under the action of generating the frits through partial melting by virtue of disordered arrangement of acicular crystals of wollastonite to form an interwoven structure; and the average Vickers hardness of a glaze surface is higher than 700, so that the mechanical strength of the glaze surface is greatly improved.
High-hardness wollastonite glaze slip and preparation method thereof
XIA JIANSHI (author) / FU WENLONG (author) / WANG WENDONG (author)
2015-06-10
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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