The invention discloses a catalytic
degreasing type binder used for
powder injection molding and feedstock preparation method; the catalytic
degreasing type binder used for
powder injection molding consists of
polyoxymethylene homopolymer, high-density
polyethylene and
paraffin wax, as well as compatibilizer,
plasticizer, and surfactant, with the
volume percentage thereof as follows: 85 to 95 percent of
polyoxymethylene homopolymer, 4 to 9 percent of high-density
polyethylene, 3 to 6 percent of
paraffin wax, 0.5 to 1 percent of compatibilizer, 1 to 2 percent of
plasticizer, and 0.5 to 1 percent of surfactant. According to the binder ratio and a certain
powder load, the binder and the powder are added into an internal mixer so as to undertake mixing and prepare catalytic
degreasing type feedstock. The catalytic degreasing type binder used for
powder injection molding and feedstock preparation method overcome the shortage that only the imported catalytic degreasing type feedstock can be applied in the current PIM industrial production and thus causing the production cost to be expensive, thereby reducing the cost of using the catalytic degreasing technology and promoting the extensive application thereof in the PIM industrial production.