Category

In addition to mechanical barriers, mask filtration also has electrostatic adsorption. Fiber filter material is a commonly used material for treating pollution, purifying air and water sources. The dust capture mechanism mainly relies on mechanical blocking effects such as Brownian diffusion, interception, inertial collision, and direct interception. However, this mechanical blocking effect has poor filtering effect on particles with a particle size of less than 1 μ m and cannot purify them.

In addition to the original mechanical barrier effect, adding electrostatic adsorption in the process of air filtration, relying on Coulomb force to directly attract charged particles in the gas phase and capture them, or inducing neutral particles to produce polarity and capture them, can more effectively filter sub particles in the gas carrier phase, greatly enhancing filtration efficiency without increasing air resistance. This is the so-called high-efficiency and low resistance filter material. Electret materials happen to possess this property.

To store this static electricity, it is required that the material composition and structure of the polarizer are conducive to charge retention. The addition of stationary mother particles plays a crucial role in electrostatic storage and charge retention processes.

Adding a small amount of stationary mother particles can increase the density and depth of charge trapping energy traps in meltblown nonwoven fabrics, effectively releasing negative ions and storing charges to improve the comprehensive filtration efficiency and thermal degradation resistance of meltblown nonwoven fabrics. Reduce the resistance of non-woven fabric products and improve the filtration efficiency of non-woven fabric products under the same fiber fineness and weight. Electrified masterbatch with excellent performance and stable quality is an indispensable material for producing electrospun meltblown fabrics. It has the function of long-term generation of electric ions and storage of charges. Under the action of initiators, magnesium lithium tourmaline permanently releases charges and air negative ions, increasing the ability of mask electrostatic adsorption and negative ion sterilization, effectively blocking droplets, dust, viruses, etc. below micrometers.

The discharge characteristics of magnesium lithium tourmaline will be further enhanced after heating and pressurization of the polarizing agent. The effect will double for every ten degrees increase in temperature, and the finer the fineness, the more static electricity will be generated, and the higher the voltage.