In-situ starch solidifying formation process to prepare ceramic biscuit

Abstract

The in-situ starch solidifying formation process to prepare ceramic biscuit includes adding starch in 1-15 wt% into ceramic slurry with solid content over 50 vol% and water as dispersing medium to prepare pH 3-10 ceramic slurry through homogeneous mixing; casting into mold, heating to 60-85 deg.c for solidification to fix powder particle in ceramic slurry and drying to make ceramic biscuit; and heating to oxidize and eliminate the introduced starch organic matter or carbonizing the organic matter into ceramic biscuit component. The present invention is practical, simple in production process, wide in material source, low in cost, without environmental pollution and high in product performance.

Description

technical field

[0001] The invention relates to the field of ceramic materials, in particular to a method for preparing a body of ceramic material by in-situ solidification and molding of starch. Background technique

[0002] Molding is a key link in the preparation process of ceramic materials, which directly affects the microstructure and material properties of materials. There are dry method, colloidal molding process, etc. for ceramic green body molding. Colloidal molding includes traditional colloidal molding and new colloidal molding process. Colloidal molding refers to the method of preparing ceramic green body by using the colloidal characteristics of ceramic powder, such as grouting, tape casting, casting, spinning, etc. Compared with dry molding, it is easy to control the agglomeration and impurities of the blank, It overcomes the defects of poor uniformity and low density of the dry-pressed green body, and has the advantages of being able to prepare various ceram...