A long-lasting melt-blown polypropylene composite electret material for mask melt-blown cloth and preparation method thereof

Abstract

The invention discloses a long-lasting melt-blown polypropylene composite electret material for mask melt-blown cloth and a preparation method thereof. The long-lasting melt-blown polypropylene composite electret material includes the following components in parts by weight : 100 parts of polypropylene resin; 0.1-10 parts of fluorosilicon polymer; 0.01-2 parts of inorganic charge enhancer; 0.1-2 parts of lubricant; 0.01-0.3 part of antioxidant; A fluorine-containing polysiloxane with a bond as the main chain and a fluoroalkyl group as the side chain. In the long-lasting melt-blown polypropylene composite electret material for mask melt-blown cloth of the present invention, the silicon-oxygen main chain of the fluorosilicon polymer is pliable, which is conducive to improving the depth of charge injection, and the fluoroalkyl side chain promotes charge capture , At the same time, it can produce dipole alignment, and can also cover the main chain, endow the cloth with good hydrophobicity, make the material have a good electret effect, and effectively improve the long-term performance of the material. Moreover, the fluorosilicon polymer has a low melting point and is uniformly dispersed, and the processing and molding of the melt-blown polypropylene composite electret material is relatively simple.

Description

technical field [0001] The invention relates to the technical field of polypropylene composite electret materials, more specifically, to a long-lasting melt-blown polypropylene composite electret material used for mask melt-blown cloth and a preparation method thereof. Background technique [0002] Melt-blown polypropylene composite electret material is a high-efficiency filter material. In addition to the interception effect of ordinary filter materials, its filtration principle mainly relies on the electrostatic effect of electret fibers to capture fine dust particles, so it has low filtration resistance. , thin filter layer, good filtering effect and so on. It has a good filtering effect on fine solid dust particles, and has a good blocking and filtering effect on aerosols, bacteria, smoke, and various pollen in the atmosphere. [0003] It has been reported in the prior art that by adding an inorganic charge enhancer to prepare an electret filter material, the filter per...

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Problems solved by technology

[0006] In order to overcome the defects of poor long-term performance described in the above-mentioned prior art, the present invention provides a long-lasting melt-blown polypropylene composite electret material for mask melt-blown cloth, the melt-blown polypropylene composite electret material The filter performance of the material is good, and the processing and molding are relatively simple

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