Method for shaping green body of ceramic powder and ceramic body

Details Method for shaping green body of ceramic powder and ceramic body Method for shaping green body of ceramic powder and ceramic body

1982-08-30

1985-01-29

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Forming articles by uniting randomly associated particles

264 63, C04B 3564

Patent

active

044965060

ABSTRACT:
The invention provides a novel method for shaping a green body of a ceramic powder by use of a specific organic binder, which is a modified polyvinyl alcohol comprising monomeric units expressed by the formula ##STR1## in which R is a monovalent hydrocarbon group having at least 4 carbon atoms, Z is a divalent linking unit of --O-- or --O--CO-- and a is zero or 1, in a limited mole fraction, Due to the strong binding power and lubricity of the binder polymer, the wet blend of ceramic powder with an aqueous solution of the binder has good workability in shaping and the wet shaped body has good shape retainability. The shaped body after drying also has excellent mechanical strength to facilitate handling.

REFERENCES:
patent: 3953562 (1976-04-01), Hait et al.
patent: 4001364 (1977-01-01), Suzuki
patent: 4020134 (1977-04-01), Gordon et al.
patent: 4108929 (1978-08-01), Prochazka et al.

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