SBIR Phase I: Novel Magnetorheological Fluids with Nanosized Magnetic Particles

SBIR 第一阶段：具有纳米磁性颗粒的新型磁流变流体

• 批准号: 0127991
• 负责人: Anit Giri
• 金额: $ 10万
• 依托单位: Nanomat, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-01-01 至 2002-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0127991&HistoricalAwards=false
• 关键词: SBIR; Phase; Novel; Magnetorheological; Fluids

This Small Business Innovation Research (SBIR) Phase I project will develop magnetorheological (MR) fluids using nano-sized magnetic particles. MR fluids are a family of smart materials that have the unique ability to undergo rapid, reversible, and significant changes in their rheological properties on application of an external magnetic field. These unique properties make MR fluids very attractive for such applications as shock and vibration control, brakes, and precision finishing technology. However, problems persist with commercial MR fluids due to the relatively large magnetic particles used (typically 3-5 um). These problems include poor stability against sedimentation and redispersibility. In this Phase I project, nanosized magnetic powders will be developed to produce MR fluids with improved stability and redispersibility. This will be followed by optimization of synthesis, characterization, and testing of the MR fluids. The commercial applications of this project are expected to include electrically controllable dampers, brakes, clutches, engine mounts, throttle valves, cross steppers and precision finishing technology.

这个小企业创新研究（SBIR）第一阶段项目将开发使用纳米磁性颗粒的磁流变（MR）流体。MR流体是一系列智能材料，具有独特的能力，在施加外部磁场时，其流变特性发生快速，可逆和显著的变化。这些独特的性能使MR流体在冲击和振动控制、制动器和精密加工技术等应用中非常有吸引力。然而，由于使用相对大的磁性颗粒（通常3-5 μ m），商业MR流体仍然存在问题。这些问题包括抗沉降和回弹的稳定性差。在这个第一阶段的项目中，纳米磁性粉末将被开发用于生产具有更好的稳定性和恢复性的磁流变液。随后将对MR流体的合成、表征和测试进行优化。该项目的商业应用预计将包括电控阻尼器、制动器、离合器、发动机悬置、节气门、交叉步进器和精密加工技术。