THERMOPLASTIC MATERIALS WITH BINDER FOR MOULDING METAL ARTICLES Russian patent published in 2012 - IPC B22F1/00 C08K3/08 C08L59/00 B22F3/20 

Abstract RU 2446031 C2

FIELD: process engineering.

SUBSTANCE: invention relates to powder metallurgy, namely, to thermoplastic powders for thermoplastic forming. Proposed material contains up to 40-70 vol.% of sintering powder metal or metal alloy (A), or mixes thereof, up to 30-60 vol.% of binder (B) consisting of 50-96 wt % of one or several homo- or copolymers of POM; 2-35 wt % of one or several polyolefins; 2-40 wt % of poly-1,3-dioxetane or poly-1,3-dioxiane, or mixes thereof. Note here that sum of wegith percentage of binder components makes 100% and 0-5 vol.% of dispersing agent (C). This material is produced by fusing component B at 150-220°C and adding component A, if required together with component C, into flow of component B melt at the same temperature, or by fusing component B and C in presence of component A at 150-220°C. Then, obtained material is formed, binder is removed in gaseous oxygen-containing atmosphere at 20-180°C for 0.1-24 h, heated to 250-600°C for 0.1-12 h and sintered.

EFFECT: higher strength.

10 cl, 3 tbl, 7 ex

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RU 2 446 031 C2

Authors

Vol'Fromm Khans

Assmann Jens

Maat Jokhan Kherman Khendrik Ter

Blemakher Martin

Dates

2012-03-27Published

2007-07-05Filed