| 摘要 |
A binder composition for use in the manufacture of foundry cores and moulds comprising an aqueous alkaline solution of a phenolic resole resin and a phenoxyethanol compound having the general formula Ar-O-CHR<1>-CHR<2>-OH, wherein Ar = phenyl optionally substituted with one or more groups selected from halogen, hydroxy, alkoxy and alkyl groups and R<1> and R<2> may be the same or different and are each selected from hydrogen, alkyl or alkoxy groups. The use of the phenoxyethanol compound in the binder composition improves the rate of cure of the binder composition and results in the production of moulds and cores having higher tensile strength. |
