Composite metal

Abstract

Abstract A process for compounding a polymer resin heavily loaded in excess of 65 % by weight with a metal powder to produce a compounded mixture of metal particles in the resin having a consistent specific gravity and suitable for extrusion, the process comprises: i) blending the polymer resin with the metal powder, the polymer resin being selected from the group consisting of thermoplastic resins, elastomer resins and mixtures thereof, the selected resin having a defined melt phase temperature range at which compounding is carried out, the metal powder being selected from metals having specific gravities in excess of 2.7 and are in a powder form having a particle size of less than 1 mm with greater than 50 % of the powder passing a 100 mesh screen, ii) continuing to blend the polymer resin and the metal powder by folding the resin and powder in a confined chamber of high shear mixer at an elevated controlled temperature in the range of the melt phase temperature, the folding of the polymer and resin continuing with high shear mixing of the resin in softened state until the particles of metal are wetted with the resin to form the compounded mixture, iii) removing the compounded mixture from the confined chamber of the mixer, and iv) pelletizing the compounded mixture.

Inventors

• 👤 Jacques Mortimer
• 👤 Paul Moruzi

Bibliographic Details