NEW BioCo BINDERS CONTAINING BIOPOLYMERS FOR FOUNDRY INDUSTRY Received – Prispjelo: 2012-02-20

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 deter-mined. 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 (R u g) 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 in-vestigated moulding sands with the BioCo binders are easily knocked out and have a good susceptibility for me-chanical reclamation processes. Key words: foundry, moulding sands, polymer binders, spheroidal cast iron, biodegradatio