Progress in research of metal fibers air -laid process

As a new type of porous metals, fiber metal porous materials were applied for filtration and separation, sound absorption, enhanced heat and mass transfer. The application performances of porous metal fiber materials depend on its pore structure characteristics. The webbing is the first step of porous metal fiber materials fabrication, which determines the pore structure. Air-laid is the most common method to metal fiber webbing, the fibers disperse, suspend and sediment to metal fiber felt with pore structure with air flow. At present, the research on process of metal fiber air-laid is far from mature. Metal fiber porous material cannot be prepared for effective guidance practice. This paper reviewed the research on the fiber movement and sedimentation in the flow field to provide reference for subsequent in-depth study.