Drying shrinkage reduction method of ceramic molding drying shrinkage reducing agent and ceramic molded body

摘要

In order to obtain good reproducibility molded product with high precision, the present invention does not adversely affect the characteristics of the porosity, etc., and is effective for shrinkage suppression of the ceramic body due to drying after molding in the extrusion molding of ceramic The present invention relates to drying shrinkage reduction method of a ceramic molded body shrinkage reducing agent, and using the same. Drying shrinkage-reducing agent of the present invention are those containing the polymer fine particles, the average particle size in a state of being saturated swollen with ion-exchanged water is 0.01~10μm, polymer fine particles, ion-exchange at normal pressure I is characterized in that the amount of water absorption of water is 0.1~60mL / g. In addition, the polymer fine particles acidic functional groups are neutralized with an alkali is 3.0mmol / g or less.