Melt-blowing type non-woven filtering material

Abstract

The invention provides a melt-blowing type non-woven filtering material. A preparation method of the non-woven filtering material comprises the following steps that polylactic acid materials are provided and dissolved in DMF solvent, a polylactic acid spinning solution is obtained, wherein the concentration of the polylactic acid is 10-15 wt%; an electrostatic spinning method is adopted, and the polylactic acid spinning solution is taken as a raw material to prepare a polylactic acid electrostatic spinning layer; polylactic acid raw materials are provided again, and polyphenylene sulfide raw materials are provided; the polylactic acid materials are subjected to surface treatment; after treatment, the polylactic acid raw materials, the polyphenylene sulfide raw materials, nanometer titaniapowder and a processing agent are mixed to obtain a mixture; an extrusion forming method is utilized, and the mixture is extruded into modified polylactic acid particles; a melt-blowing method is utilized, and a modified polylactic acid melt-blowing fiber layer is formed on the polylactic acid electrostatic spinning layer. The material innovatively achieves that nanometer titania particles are carried in mixed fibers, and therefore the fiber material has not only a filtering effect but also the photocatalysis capacity.

Description

technical field [0001] The invention relates to the field of air filter materials, in particular to a melt-blown non-woven filter material. Background technique [0002] As one of the high-efficiency dust removal equipment, the bag filter is widely used in flue gas treatment systems such as power plants, metallurgy, and waste incineration. The biggest feature of the bag filter is its ultra-high dust removal efficiency, which is as high as 99.9999% in the laboratory and 99.99% in practical applications. The dust emission concentration is below 10mg / Nm3, or even 1mg / Nm 3 , basically achieve zero emissions. Filter material technology is the key technology of bag filter, the service life of filter material and dust removal efficiency are the most important factors of bag filter. Due to the limitation of equipment, production technology and other conditions, the domestic filter material technology has long lagged behind foreign countries; Dominant, such as PPS fiber has been m...

AI Technical Summary

Problems solved by technology

At present, the bag dust removal technology can fully meet the needs of flue gas dust removal and stable and reliable operation.