Smart polyurethane foam with magnetic field controlled modulus and anisotropic compression property

Recent Progress on Magnetorheological Solids: Materials, Fabrication, Testing, and Applications

“…However, a few researchers took the benefits from the porous MREs for a specific purpose, such as high stretching materials. [55][56][57] Different to the open cell, inserting ferro particles within the foam matrix is performed together with the development of the matrix foam itself. The microstructure appearance of porous and nonporous MREs can be seen in Figure 3.…”

“…[57] Ju et al [58] fabricated isotropic porous silicone-based MREs using the decomposition reaction of NH 4 HCO 3 to produce the porous structure. The first advantage is that it is light in weight, which means it has the potential to be used in some special fields, such as aerospace.…”

“…The poor mechanical properties of silicone rubber, however, could not satisfy some application requirements. [8,9,14,26,28,46,52,[55][56][57]102,103, This is because of the wide range of mechanical properties that can be achieved by simply modifying the type and concentration of the constituent elements. The shortcomings of using a silicone matrix restrict the scope of its applications.…”

The enhanced magnetorheological performance of carbonyl iron suspensions using magnetic Fe3O4/ZHS hybrid composite sheets

“…[1][2][3] Such suspensions are usually composed of micron-sized ferromagnetic 4-6 particles with high saturation magnetization dispersed in a nonmagnetic carrier liquid. [9][10][11][12][13][14] Therefore, due to their extraordinary properties, MR suspensions have recently begun to be utilized in many industrial applications. 7,8 Generally, in the absence of an external magnetic eld, the particles are randomly dispersed in the carrier liquid and the suspensions exhibit a Newtonian-like behaviour.…”

Advancing Towards Polyurethane‐Based Magnetorheological Composites

“…They represent solids with similar properties to MR fluids. [12,[20][21][22] In this paper, we report on a novel polyurethane (PU) based magnetorheological hybrid material, which can be classified as an MR foam. A series of publications and patents submitted by Lord Corporation and Ford Motors [9][10][11][12] has since led to intensive studies into MR elastomers.…”