Electret refers to a dielectric material with long-term charge storage function. It has the advantages of high efficiency, low flow resistance, antibacterial, and energy saving. On the basis of ensuring the physical collision blocking effect of conventional filter materials, it adds electrostatic adsorption. The electret treatment makes the filter material fibers charged, combined with the dense characteristics of meltblown ultrafine fiber materials, so a large number of electrodes are formed between the charged fibers. The charged fibers can not only attract most of the charged particles in the environment like a magnet, but also Part of the uncharged particles can be polarized, and then some pollutants with smaller particle size can be adsorbed, and even nano-sized substances such as viruses can also be electrostatically adsorbed or blocked by charge repulsion.
Experiments have proved that after adding electret masterbatch, the electret effect of meltblown cloth is greatly improved, and its surface charge density, filtration performance and antibacterial properties are significantly improved.
The electret masterbatch with excellent performance and stable quality is an indispensable material for the production of electret melt blown cloth. The self-contained electret masterbatch and compound modification additives make the electret masterbatch uniformly dispersed in the PP, avoiding the uneven dispersion of the electret masterbatch and the unstable filtration effect caused by the customers' self-stirring. The addition of compound modifiers further improves the compactness and uniformity of the product fibers.
The meltblown cloth made by "one-step method" is soft, uniform and dense, with better electret effect, and filtration efficiency ≥99%. The long-term filtering effect is more than 1 year, the charge retention rate is high, and the stability is good. Effectively avoid the problems of uneven mixing and dispersion, unstable filtration efficiency and failure to reach 99% filtration rate.
For more information about melt blown filter cloth, please pay attention to us(Guide Nonwoven Fabric).
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