We are pleased to announce that the Polish Patent Office has granted patent protection for the invention titled: Magnetorheological fluid based on metal oxides and the method of its preparation. Its creators are PhD. Magdalena Osial and PhD. DSc, Eng. Agnieszka Pręgowska from IPPT PAN, M.Sc. Magdalena Abramowicz from the University of Warsaw, PhD. Eng. Weronika Urbańska from the Wrocław University of Science and Technology, and PhD. Eng. Magdalena Warczak from the Bydgoszcz University of Technology.
Magnetorheological (MR) fluids are advanced engineering materials that change their viscosity under the influence of an external magnetic field. This unique property makes them ideal for use in vibration dampers, clutches, and brakes, allowing precise control over their operation. The key component of MR fluids is ferromagnetic additives, which determine their efficiency and durability. A new invention, protected by patent PL 246587 introduces a ferromagnetic additive in the form of iron oxide (II, III) nanoparticles doped with metals such as cobalt (Co), manganese (Mn), zinc (Zn), chromium (Cr), or nickel (Ni). These innovative nanoparticles, ranging in size from 0.01 to 30 µm, not only enhance the MR fluid’s sensitivity to magnetic fields but also improve its stability and longevity. A new feature of this invention is the use of waste from recycled batteries as raw material for nanoparticle production. This eco-friendly approach not only reduces production costs but also contributes to minimizing hazardous waste, promoting environmental sustainability. Additionally, the nanoparticles are coated with special anti-sedimentation agents such as oleylamine, oleic acid, or palmitic acid. This coating ensures that the MR fluid maintains a uniform consistency over time, enhancing its performance and reliability in practical applications. The new magnetorheological fluid formulation paves the way for broader industrial applications, including the automotive industry, construction, and robotics. With increased stability, improved efficiency, and the use of recycled raw materials, this invention represents a significant step toward sustainable technological solutions.
Fot.1-4: Creators: PhD. Magdalena Osial and PhD. DSc, Eng. Agnieszka Pręgowska from IPPT PAN, M.Sc. Magdalena Abramowicz from the University of Warsaw, PhD. Eng. Weronika Urbańska from the Wrocław University of Science and Technology, and PhD. Eng. Magdalena Warczak from the Bydgoszcz University of Technology.
Fot.5A i 5B: TEM image of nanoparticles from synthesis 2a (Fig. 5A) and TEM image of nanoparticles from synthesis 2a2b
