Process for the production of moulded articles of expanded graph

Details Process for the production of moulded articles of expanded graph Process for the production of moulded articles of expanded graph

1991-05-14

1993-03-16

Aftergut, Karen

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Of inorganic materials

264 41, B29C 6720, B29C 6724

Patent

active

051941988

ABSTRACT:
Moulded articles are produced by heating expandable graphite, in which the expandable graphite is first pre-expanded at 140.degree. to 450.degree. C. until a bulk density of 30 to 500 g/l has been reached, at least 50% by volume of a mould is then filled with the graphite thus pre-expanded, and the expansion of the graphite is then completed in the mould by heating to temperatures in the range from 300.degree. to 700.degree. C.

REFERENCES:
patent: 3333941 (1976-08-01), Olstowski et al.
patent: 3389964 (1968-06-01), Olstowski
patent: 3414381 (1968-12-01), Olstowski et al.
patent: 3853972 (1974-12-01), Berner
patent: 3877080 (1975-04-01), Olcott
patent: 3885007 (1975-05-01), Olsen et al.
patent: 3928520 (1975-12-01), Shinomoto et al.
patent: 4075114 (1978-02-01), Ishikawa et al.
patent: 4102960 (1978-07-01), Borkowski
patent: 4146401 (1979-03-01), Yamada et al.
patent: 4777000 (1988-10-01), Kuwabara et al.
patent: 4929404 (1990-05-01), Takahashi et al.

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