Method of removing binder material from a shaped ceramic preform

Details Method of removing binder material from a shaped ceramic preform Method of removing binder material from a shaped ceramic preform

1985-12-24

1988-03-15

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Recycling of reclaimed or purified process material

Of gaseous process material

260705, 264 28, 264 401, 264 43, 264 63, 264 85, 264344, 428688, C04B 3564

Patent

active

047312084

ABSTRACT:
The invention relates to a method of removing binder materials from a shaped preform (green body) in the preparation procedure for the manufacture of ceramics from particulate materials. The new method comprises exposing the green body to a supercritical fluid to dissolve the binder materials in the supercritical fluid without deforming the shape of the article. In the method, the binder materials can be removed without swelling of the article because the green body is not exposed to a rapid temperature increase and the binder does not volatilize in the body. In addition, the binder material can be removed in a drastically shorter period of time from the entire body.

REFERENCES:
patent: 3351688 (1967-11-01), Kingery et al.
patent: 3442668 (1969-05-01), Fenerty et al.
patent: 4011291 (1977-03-01), Curry
patent: 4404166 (1983-09-01), Wiech, Jr.
patent: 4552786 (1985-11-01), Berneburg et al.

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