Method of preparing a monolithic structure having flow channels

Plastic and nonmetallic article shaping or treating: processes – Including step of generating heat by friction

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264 63, C04B 3912

Patent

active

043791093

ABSTRACT:
A method of preparing ceramic monolithic structures having flow channels and their use as heat exchangers, filters, and catalyst supports are disclosed. In the method, a substantially uniform mixture of a composition comprising a ceramic powder, a polyolefin binder, and a plasticizer is shaped to form flat sheets and a series of ribs is formed on a first side of at least a portion of the sheets. After extraction of the plasticizer, a ceramic cement composition is applied to the ribs or to the second side of the sheets and the sheets are positioned in a layered structure such that the ceramic cement composition is in adhesive contact with a surface of the adjacent sheet. Firing the layered structure to sinter the ceramic powder and the cement composition and to decompose the polyolefin provides a monolithic structure of desirable strength and controlled porosity.

REFERENCES:
patent: 3854186 (1974-12-01), Sergeys
patent: 3887411 (1975-06-01), Goodyear
patent: 3943994 (1976-03-01), Cleveland
patent: 4046612 (1977-09-01), Warner

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