Long-acting melt-blown polypropylene composite electret material for mask melt-blown cloth and preparation method of long-acting melt-blown polypropylene composite electret material

Abstract

The invention discloses a long-acting melt-blown polypropylene composite electret material for mask melt-blown cloth and a preparation method of the long-acting melt-blown polypropylene composite electret material. The long-acting melt-blown polypropylene composite electret material comprises the following components in parts by weight: 100 parts of polypropylene resin, 0.1 to 10 parts of a fluorosilicone polymer, 0.01 to 2 parts of an inorganic charge enhancer, 0.1 to 2 parts of a lubricant, and 0.01 to 0.3 part of an antioxidant, wherein the fluorosilicone polymer is fluorine-containing polysiloxane taking a silicon-oxygen bond as a main chain and fluoroalkyl as a side chain. In the long-acting melt-blown polypropylene composite electret material for mask melt-blown cloth, a silicon-oxygen main chain of the fluorosilicone polymer is smooth, increase of the charge injection depth can be facilitated, a fluoroalkyl side chain promotes charge capture, meanwhile, dipole directional arrangement is generated, a main chain can be masked, a cloth cover is endowed with good hydrophobicity, the material has a good electret effect, and the long-term effect of the material is effectively improved. Moreover, the fluorosilicone polymer is low in melting point and is uniformly dispersed, so that the melt-blown polypropylene composite electret material is relatively simple to process and form.

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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