| 摘要 |
This invention provides a production method for a ceramic structure capable of making a extrusion rate coefficient, in extruding of a ceramic structure, greater than that of prior art technologies. In a production method for a ceramic structure by the steps of mixing and kneading a ceramic batch material containing at least ceramic powder and water, extruding the mixture so kneaded, and drying and sintering a resulting extrudate, a water-insoluble liquid lubricant consisting of acyl glycerin and/or a derivative is added to the ceramic batch material. |
| 主权项 |
1. A production method for a ceramic honeycomb structure having partitions arranged in a honeycomb shape, comprising the steps of mixing and kneading a ceramic batch material devoid of water-soluble lubricants, the ceramic batch material including ceramic powder, triacyl glycerin, water, and a binder, extruding the mixture so kneaded, and drying and sintering a extrudate, wherein:
the temperature of the ceramic batch material is controlled to 10 to 30° C. at the time of extrusion, the triacyl glycerin is a water-insoluble liquid lubricant, that is a water-insoluble liquid at a temperature of said extrusion and having a kinematic viscosity at 20° C. of 30 cSt to 120 cSt, which is added to said ceramic batch material in an amount of 1.0 to 8.0 wt % on the basis of 100 wt % of said ceramic powder, and wherein the sum of the contents of said water and said water-insoluble liquid lubricant contained in said ceramic batch material is 18.0 to 24.5 wt % (to be contained) on the basis of 100 wt % of said ceramic batch material.
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