Why nanofiber filter media has much more advantages?

Jan 19, 2017

There are many industrial filter media in factory or other places. However, many people prefer to nanofiber filter media. Why? Do you know?

Nanofiber Filter Media

Polymeric nanofibers are created through the electrospinning process. Electrospinning uses an electric field to draw a polymer solution from the tip of a capillary to a collector. A voltage is applied to the polymer solution, which causes a jet of the solution to be drawn toward a grounded collector. The fine jets dry to form polymeric fibers, which can be collected on a web. The electrospinning process has been documented using a variety of fiber forming polymers. By choosing a suitable polymer and solvent system, nanofibers with diameters in the range of 40-2000 nm can be produced. The collection web is actually the filter media in this case and the efficiency of the media can be controlled with the amount of nanofibers deposited on the media.

Nanofibers provide dramatic increases in filtration efficiency at relatively small increases in filter restriction. In actual operating environments, nanofiber filter media also demonstrates improved filter life and increased contaminant holding capacity since they truly add surface area utilizing the small nanofibers for particle collection.

In the particle size of interest, i.e., from submicron and up, better filter efficiency can be achieved at the same pressure drop, or conversely, the same filter efficiency at lower pressure drop can be achieved with smaller fiber sizes.

Chentai, an industrial filter media manufacturer, provides varies of filter papers.