Preparation method of intermediate-temperature magnesium strengthening porcelain and product prepared from intermediate-temperature magnesium strengthening porcelain

Abstract

The invention relates to a preparation method of an intermediate-temperature magnesium strengthening porcelain and a product prepared from the intermediate-temperature magnesium strengthening porcelain. The formula of the strengthening porcelain comprises the following billet materials and glaze materials by weight percent: the billet materials: 30% to 45% of sintered talc, 20% to 35% of raw talc, 5% to 15% of feldspar, 10% to 18% of kaolin, 3% to 5% of bentonite and 0% to 15% of quartz; the glaze materials: 20% to 40% of feldspar, 5% to 15% of calcite, 4% to 8% of kaolin, 0% to 15% of quartz, 3% to 5% of ZnO, 3% to 5% of BaCO and 20% to 35% of glass materials. The preparation method comprises the following steps: carrying preparation, molding, drying, billet biscuiting, glazing, drying and intermediate-temperature glaze firing on the billet materials and the glaze materials under the conditions that the biscuiting temperature of a billet is controlled within 1240 DEG C to 1260 DEG C, the heat preservation time of the billet is 30 minutes, the firing time of an intermediate-temperature glaze is 1100 DEG C and the firing time of the intermediate-temperature glaze is 30 minutes, thereby obtaining the strengthening porcelain with a good glaze surface quality and a high glossiness. Thus, the method has a wide application prospect.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials (ceramics), and in particular relates to a preparation method of medium-temperature magnesia reinforced porcelain and a prepared product thereof. Background technique [0002] At present, most of the preparation methods of domestic medium-temperature magnesia reinforced porcelain adopt a one-time firing process. However, due to the narrow firing temperature range of magnesia porcelain, it is difficult to control the temperature during the firing process. When the temperature is too high or the holding time is too long, deformation defects are easy to occur. , when the temperature is too low or the holding time is short, it is easy to produce cracking defects. Therefore, in the current production process of medium-temperature magnesia reinforced porcelain, in order to widen the firing range, about 30% raw talc is often added. However, due to the one-time firing process, During the fi...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the preparation methods of domestic medium-temperature magnesia reinforced porcelain adopt a one-time firing process. However, due to the narrow firing temperature range of magnesia porcelain, it is difficult to control the temperature during the firing process. When the temperature is too high or the holding time is too long, deformation defects are easy to occur. , when the temperature is too low or the holding time is short, it is easy to produce cracking defects. Therefore, in the current production process of medium-temperature magnesia reinforced porcelain, in order to widen the firing range, about 30% raw talc is often added. However, due to the one-time firing process, During the firing process, more pinhole defects will be produced on the glaze surface due to the decomposition of raw talc. In addition, because the expansion coefficient of the magnesia reinforced porcelain body is relatively large, the expansion coefficient of the glaze must match it. The surface gloss is poor and pinhole defects are prone to occur. Therefore, the current preparation methods of medium-temperature magnesia reinforced porcelain can no longer meet the needs of consumers, which seriously hinders the improvement of the quality of medium-temperature magnesia daily-use ceramics