A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
VERFAHREN ZUR HERSTELLUNG VON METALLISCHEN ODER KERAMISCHEN FORMKÖRPERN
What is described is a process for producing a metallic or ceramic moulded body from a thermoplastic composition, comprising A) 40 to 65% by volume of at least one inorganic sinterable powder A, B) 35 to 60% by volume of a mixture of B1) 50 to 95% by weight of one or more polyoxymethylene homo- or copolymers; B2) 5 to 50% by weight of a polymer which is homogeneously dissolved in B1) or is dispersed in B1) with a mean particle size of less than 1 µm, as a binder, and C) 0 to 5% by volume of a dispersing aid, where the sum of components A), B) and C) adds up to 100% by volume, by injection moulding or extrusion to give a green part, removing the binder and sintering, characterized in that the binder is removed by a) treating the moulded part with a solvent which extracts the binder component B2) from the moulded part and in which the binder component B1) is insoluble, b) then removing the solvent from the moulded part by drying, and c) then treating the moulded part in an acid-containing atmosphere which removes the binder component B1) from the moulded body.
VERFAHREN ZUR HERSTELLUNG VON METALLISCHEN ODER KERAMISCHEN FORMKÖRPERN
What is described is a process for producing a metallic or ceramic moulded body from a thermoplastic composition, comprising A) 40 to 65% by volume of at least one inorganic sinterable powder A, B) 35 to 60% by volume of a mixture of B1) 50 to 95% by weight of one or more polyoxymethylene homo- or copolymers; B2) 5 to 50% by weight of a polymer which is homogeneously dissolved in B1) or is dispersed in B1) with a mean particle size of less than 1 µm, as a binder, and C) 0 to 5% by volume of a dispersing aid, where the sum of components A), B) and C) adds up to 100% by volume, by injection moulding or extrusion to give a green part, removing the binder and sintering, characterized in that the binder is removed by a) treating the moulded part with a solvent which extracts the binder component B2) from the moulded part and in which the binder component B1) is insoluble, b) then removing the solvent from the moulded part by drying, and c) then treating the moulded part in an acid-containing atmosphere which removes the binder component B1) from the moulded body.
VERFAHREN ZUR HERSTELLUNG VON METALLISCHEN ODER KERAMISCHEN FORMKÖRPERN
PROCESS FOR PRODUCING METALLIC OR CERAMIC MOULDED BODIES
PROCÉDÉ DE FABRICATION DE CORPS MOULÉS MÉTALLIQUES OU CÉRAMIQUES
TER MAAT JOHAN (author) / BLÖMACHER MARTIN (author) / WOHLFROMM HANS (author)
2015-10-28
Patent
Electronic Resource
German
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