PEPTIDE/PROTEIN WASTE MATERIALS LIKE BINDERS OF FOUNDRY SANDS

摘要

The aim of this study was to research and develop a new foundry moulding mixture with new binder system based on proteins/peptides. At present, these moulds and cores containing resins, bentonite, cement or soluble glasses as binders of foundry sands are used. Furthermore, higher flexural and tensile strengths, good flowability of the sand, good surface property, easy shaking out under temperature 650 °C for aluminum casting and resistance of moisture absorption are also required. Water-soluble or water-swelling materials based on peptides form bonds with inorganic matrix, even though no chemical reactions take place. The experiments of some tested wastes based on proteins proved to be suitable binders for aluminum casting due to their environmental friendliness. To evaluate the quality and performance of molds with a new binder experimental casting has been performed.