Open Access Thesis
Gums and resins, Biopolymers; Metal castings--Research;
The objectives of this research were to investigate the discovery and development of a biobased nobake binder resin for use within the foundry industry toward improved energy efficiency and environmental performance. The performance of polysaccharides within biobased resins was evaluated using industry-accepted methods and standards such as cure rate, tensile-strength development, and casting performance based upon step cone core results. Biobased nobake resins comprised of polysaccharide raw materials cure at a rate that is comparable to conventional nobake sand binders. Upon reaching stripping time, the development of biobased resin reveals a rapid increase in tensile strength, reaching 80% of its 24-hour strength within the first 10 minutes. Step cones produced with polysaccharide resins possess greater resistance to the formation of veining and penetration defects within ferrous castings. Based upon the physical characteristics of the binder and the defect analysis of the step cones, polysaccharides can serve as a complete substitute for oil based components of a nobake binder system.
Year of Submission
Master of Arts
Department of Technology
1 PDF file (vi, 55 pages)
©2014 Ian David Morgan Williams
Williams, Ian David Morgan, "The environmental performance of biobased resin within phenolic-urethane nobake binders: A feasibility study" (2014). Dissertations and Theses @ UNI. 54.