As early as the early 20th century, scientists used statistics to analyze the relationship between the diameter and quantity of dust in industrial areas: for dust with diameter ≤ 3um in the atmosphere, only 30% of the total weight of dust in weight, but 99.9% in quantity. Ordinary filter materials mainly rely on Brownian motion, interception, inertial collision, gravity sedimentation and other mechanical blocking effects when filtering dust, and it is difficult to meet the requirements for dust with particle size ≤ 3um.
At present, SFFILTECH electret composite filter media is mainly prepared by corona discharge. The self-developed functional nano tourmaline hybrid lotion makes its nano particles cross-linked and grafted to the surface of filter media fiber through "physical" - "chemical" action, and then conducts corona electret treatment to form an efficient and low resistance filter material. Compared with the traditional impregnation or scraping process, Yuanchen Technology's nanoparticle treatment technology has stronger adhesion with the fiber surface, uniform charge density everywhere, and good consistency of charge burial depth, which is more conducive to the improvement of filtration performance and the extension of service life cycle.
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