Low-shrinkage, high-strength, and large ceramic plate and manufacturing method thereof

US11084759B2 · kind B2 · utility

Assignee

• MONALISA GROUP CO., LTD · CN

Inventors

• Yijun Liu · Longbeilingcun, CN
• Qinggang Wang · Foshan, CN
• Limin Pan · Foshan, CN
• Xiaofeng Yang · Mauldin, US
• Zhijun Xie · Foshan, CN
• Songzhu Zhang · Foshan, CN
• Zhenhua YAN · Foshan, CN
• Junle Dong · Foshan, CN
• Yong Zhao · Beijing, CN
• Yuandong Yang · Foshan, CN

Key dates

• Filing date: Apr 14, 2016
• Grant date: Aug 10, 2021
• Expiry date: May 19, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P40/60
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Disclosed are a low-shrinkage, high-strength, and large ceramic plate and a manufacturing method thereof. The method comprises the following steps: (1) preparing a ceramic raw material powder; (2) subjecting an acicular wollastonite to surface coating with a silane coupling agent and to pre-dispersion with a fumed silica to obtain a pre-treated acicular wollastonite; and (3) thoroughly mixing the ceramic raw material powder and the pre-treated acicular wollastonite and granulating the resulting mixture, the amount of the pre-treated acicular wollastonite added being 10 wt % to 30 wt % of the ceramic raw material powder, and subjecting the resulting granules to dry pressing and sintering to obtain the large ceramic plate. The acicular wollastonite is incorporated into the manufacturing of the large ceramic plate to take full advantage of the reinforcing effect and low sintering shrinkage characteristics of the acicular wollastonite. The invention reduces sintering shrinkage and increases product strength.