SGER/GOALI Industrial Personnel in Academe: Foundry Cores with Reclaimed Sand and Novel Less-polluting Binders with UV Curing

这项探索性研究小额拨款的目的是研究使用新型胶原蛋白基粘合剂减少铸造排放的可行性。相当一部分铸造排放发生在结合模具芯的传统酚醛聚氨酯在高温下热解释放挥发性有机化合物时。岩心是由硅砂颗粒组成的，这些颗粒通过粘合剂粘合在一起。本文研究的新型胶原蛋白粘合剂释放的VOC排放量是传统粘合剂的1/4到1/3，但它们没有传统粘合剂那么坚韧。因此，浇注的熔融金属将更容易侵蚀胶原蛋白结合的芯。在本研究中，将使用紫外线照射胶原蛋白，试图使胶原蛋白表皮变韧，提高其在熔融过程中使用的能力和可行性。如果成功，该研究将为了解与胶原蛋白的紫外线自由基反应及其在熔融金属加工过程中作为挥发性有机化合物粘合剂的用途提供基础知识。铸造厂减少排放的影响是非常重要的。提案团队预计，这项研究的成功实施可以使铸造厂的VOC污染减少40-60%。

The objective of this Small Grant for Exploratory Research is to investigate the feasibility of using a novel collagen protein-based binder to reduce foundry emissions. A considerable fraction of foundry emissions occurs when conventional phenolic urethanes that bind mold cores release VOCs when pyrolyzed at high temperatures. Cores are made of silica sand grains that are held together by binders. The new collagen protein binder examined herein releases 1/4 to 1/3 as much VOC emissions as do conventional binders but they are not as tough. Thus poured molten metal will more readily erode the collagen-binded cores. In this study, UV light irradiation of the collagen protein will be used in an attempt to toughen the collagen skin and improve its ability feasibility for use in molten processes. If successful, the research will provide fundamental understanding of UV radical reactions with collagen and its use as a binder of VOCs during molten metal processing. The impact of reduced emissions from foundries is enormously important. The proposal team anticipates that a successful implementation of this research can result in a 40-60% reduction in VOC pollution from foundries.