Optimization of stabilized magnetorheological fluids for high precision polishing processes

用于高精度抛光工艺的稳定磁流变液的优化

• 批准号: 576774-2022
• 负责人: Maric, MilanM
• 金额: $ 1.46万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=747056
• 关键词: Optimization; stabilized; magnetorheological; fluids; precision

This project, originating from a PRIMA Quebec-Korea joint research call, will develop a highly stable magnetorheological polishing (MRP) system for next-generation optical and electrical devices. The MRP method is a smart polishing process where the abrasive forces are controlled by the applied magnetic field, thereby allowing ultra-precise polishing of material surfaces. There have been extensive efforts to use MRP to finish the surface of materials serving in high-end optical and electrical devices using optical glass, silicon, glass, germanium, silicon carbide, etc. To obtain high-quality products, it is important to control the MRP suspension to prevent stratification of the magnetorheological fluid outside of the magnetic field (hydraulic system), but also to achieve an ordered structure within the polishing layer under the action of the magnetic field. To this end, optimization of the composition of MR fluids is crucial. Therefore, the core thrust of the project is to conduct theoretical and experimental studies on the sedimentation behaviour and MRP performance of magnetorheological fluids with different characteristics in terms of dispersed phase compositions, particle sizes, and stabilizing polymer in the dispersion medium. To support this, experimental design of the block copolymer stabilizer for the nanoparticles is critical, as its composition, chain length and microstructure dictate the ability to stabilize the dispersion. Through a systematic study on the MRP system, we will develop optimized MR fluid compositions for MRP smart polishing systems.

该项目源自Prima Quebec-Korea联合研究呼叫，将开发出高度稳定的磁性抛光（MRP）系统，用于下一代光学和电气设备。 MRP方法是一个智能抛光过程，在该过程中，磨料力由施加的磁场控制，从而允许对材料表面的超精油抛光。已经进行了广泛的努力，使用MRP使用光学玻璃，硅，玻璃，锗，碳化硅等在高端光学和电气设备中使用的材料表面，以获取高质量的产品，这对于控制很重要MRP悬浮液以防止磁场外（液压系统）外磁性流体的分层，但在磁场的作用下也可以在抛光层内实现有序结构。为此，MR流体组成的优化至关重要。因此，该项目的核心力量是在分散相组成，粒度和稳定聚合物中，对具有不同特征的磁流体流体的沉积行为和MRP性能进行理论和实验研究。 为了支持这一点，纳米颗粒的块共聚物稳定剂的实验设计至关重要，因为其组成，链长和微观结构决定了稳定分散体的能力。通过对MRP系统的系统研究，我们将为MRP智能抛光系统开发优化的MR流体组成。