Carbon Dioxide Based Metal Working Fluids

0607213 Hayes本研究的目标是开发设计超临界二氧化碳（ScCO 2）中的环境友好金属加工液所需的基本知识基础。 提出了二氧化碳基金属加工液作为水基金属加工液的替代品。 基于初步研究，二氧化碳金属加工液有望减少对环境的影响，并改善冷却剂和润滑特性。 这项工作将推进超临界流体及其溶剂化性质的使用与散装和边界润滑剂的基本理解。 开发植物油-ScCO 2金属加工液以取代传统的矿物油-水包油，将产生100%不含石油和水的“绿色”材料。 这些知识将允许选择适当的组件和工艺操作条件，以便在汽车，医疗和航空航天工业中使用流体。 这些环保型金属加工液的开发将提高生产率，同时消除大量的健康风险和水废物。 金属加工行业代表了美国经济中超过10亿美元的部门，每年产生超过20亿加仑的水性金属加工液废物。

0607213HayesThe goal of this research is to develop the fundamental knowledge base needed to design environmentally benign metalworking fluids in supercritical carbon dioxide (ScCO2). The carbon dioxide based metalworking fluids are proposed as replacements for aqueous-based metalworking fluids. Based on preliminary work, the carbon dioxide metalworking fluids promise to have less environmental impact as well as improved coolant and lubrication characteristics. This work will advance the fundamental understanding of supercritical fluids and their solvation properties in uses with bulk and boundary lubricants. The development of a vegetable oil-in-ScCO2 metalworking fluid to replace the traditional mineral oil-in-water will result in a "green" material that is 100% petroleum- and water-free. This knowledge will allow selection of the proper components and process operating conditions necessary to use the fluids in the automotive, medical, and aerospace industries. The development of these environmentally benign metalworking fluids will enhance productivity while eliminating substantial health risks and aqueous wastes. The metalworking industry represents a greater than $1 billion sector of the United States economy and creates over two billion gallons of aqueous metalworking fluid waste each year.