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The antistatic property of non-woven needled of felt filtrat

Time:2015-11-03 Click:

Some fiber(especially for synthetic fiber) has high electric resistance and easily to carry electric charge. The common polypropylene felt’s surface resistance can reach 1×1014 Ω. Friction on the surface of the felt for one minute can produce 2000V high-voltage electrostatic, the half-life is 1600s. The sparks occurred while the electrostatic is discharged. The sparks may cause the burning of the flammable dust inside the dust catcher. It may also cause explosion when the dust concentration reach explosion limit. Some easy charged dust concentration onto the surface of the filtration resistance. The high load will damage the filtration bag.
In addition, some dust scatters in the air, it may also cause explosion when the dust reach to certain concentration and when the dust meets the sparks. Most explosive dust has particle size of 1-150um. The smaller the particle is the bigger the surface area is and the easier to cause the flame. For the dust collection of inflammable and explosive dust, we must choose the antistatic filtration materials even take special fire retardant or explosion-proof method.
In order to prevent the electrostatic hazards, we must use the conductive antistatic filtration material in certain industry conditions. The antistatic property will make the filtration material easily release the surface charge into the ground.
Our production technology to produce the non-woven felt line products with antistatic function. The method is listed as follows:
      1. Add antistatic thread into the fabric for non-woven needled felt.
      2. Add conductive fibers into the fiber nets for non-woven needled felt filtration material
Stainless steel fiber and modification conductive(carburizing) chemical fiber are commonly used.

The filtration material with flame retardant properties generally refers to the fibers with limit oxygen index (LOI) more than 30. For example, PPS, P84, and PTFE fibers are safe.
For the fibers with LOI less than 30, such as polypropylene fiber, polyamide, polyester, and other filtration materials, our company can apply the flame retardant dipping treatment to reach the safety goal based on user needs.
Wuxi Jiacheng Environmental Protection Products Co., Ltd