Adhesive Bonding and Self-Curing Characteristics of alpha-Starch Based Composite Binder for Green Sand Mould/Core

摘要

Interactions between different components in alpha-starch based composite binder for green sand mould/core were investigated by using XRD, IR spectra, ~1H NMR spectra and SEM. Several adhesive hardening structures and theories of the binder at room temperature were proposed according to the interactions between various compositions. Thus, the reasons for the binder to have excellent combination properties and unique adhesive bonding and self-curing characteristics were explained by these theories successfully. And the theories are of great directive importance to design and development of composite binder for green sand mould/core.