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At present, anti-static filter bags at home and abroad mainly have two kinds of filter materials, which can effectively solve the problem of electrostatic adsorption. That is to use modified polyester and spun metal fiber.
1.Modified polyester filter bag
Through a series of chemical treatment, the hydrophobicity of polyester fiber is changed to generate ions, which will leak the static charges accumulated on the anti-static filter bag, so that the fiber and fabric have durable anti-static performance. Its antistatic mechanism is as follows: in the process of co spinning, the antistatic agent formed by mixing and the polyester blend are evenly dispersed, and a group of molecules in the state of microfiber in the antistatic agent are distributed along the fiber axis. Because of the connection between the microfibers, moisture absorption and conductive channels from inside to outside are formed, and it is convenient for another group of hydrophilic genes to combine to leak the static charges accumulated on the fiber to achieve the antistatic purpose.
2.Spun metal fiber cloth filter bag
This anti-static filter bag is made of chemical fiber and stainless steel fiber, because stainless steel fiber has good electrical conductivity and has a long anti-static performance after being blended with chemical fiber. Stainless steel metal fiber has good electrical conductivity and is easy to be blended with other fibers. It has mechanical properties, good flexibility, good electrical conductivity, acid and alkali resistance, other chemical corrosion resistance, high temperature resistance and other characteristics. Stainless steel metal fiber is used in the dedusting system of conductive dust such as pulverized coal and coke powder, which can reduce resistance, extend the service life of filter material and ensure the safe operation of the deduster. In addition to adding conductive fiber to the filter material of anti-static filter bag, some anti-static needle felt filter materials are made of conductive base cloth, which can achieve the same results.
