New BioCo binders containing biopolymers for foundry industry

Abstract

Possibilities of cross-linking of new polymer binders from the BioCo group, their hardening in moulding sands at the application of cross-linking agents both physical and chemical are presented. Their thermal stability was determined. It was proved, that moulding sands bound by the BioCo binders are characterised by the compression strength (Ruc) of an order of 2 MPa, and the bending strength (Rug) of 1 MPa, after 1 hour of a sample curing. The worked out BioCo binders are biodegradable and renewable in the part which was not completely burned. The investigated moulding sands with the BioCo binders are easily knocked out and have a good susceptibility for mechanical reclamation processes.

Keywords

• foundry
• moulding sands
• polymer binders
• spheroidal cast iron
• biodegradation