Ion wind control method for electrostatic spinning

Abstract

The invention relates to an ion wind control method for electrostatic spinning. A electrostatic spinning is modularized; a strong ionic air knife is added between modules; the strong ionic air knife is linked with a row of metal needles with certain density to form a discharge electrode; the discharge electrode discharges after electrostatic high voltage is connected; air in an area near a pinpoint is ionized; compressed air blows out from a spindly slit after entering from an input port, and the blown gas forms laminar flow wind; the laminar flow wind brings the ions in the area near the pinpoint of each metal needle to the film surface accumulated with static electricity; and the adjustment of the concentration of the ions to the film surface is determined by the voltage of the discharge needle, the air flow of the air knife and the distance from the edge of the air knife to the film surface. The electrostatic accumulation caused by large-scale electrostatic spinning is reduced or removed by the ion wind control method; and the laminar flow wind of the strong ionic air knife brings the ions in the area near the pinpoint to the film surface accumulated with the static electricity, so as to neutralize the static electricity at the surface caused by large-scale electrostatic spinning.

Description

technical field [0001] The invention relates to an ion wind control method for electrospinning. Background technique [0002] Substances in nature can gain or lose electrons through certain processes (such as friction or induction electrification), and this type of charge is called static electricity. When these positive charges or negative charges gradually accumulate, there will be a potential difference with the surrounding environment. If the charges are transferred between different potentials through the discharge path, this is called electrostatic discharge phenomenon, referred to as ESD (ElectroStatic Discharge) ). This phenomenon often occurs in daily life in dry winter. It occurs in industrial production processes such as film production, packaging process, paper production and chemical fiber cloth production. Especially in the semiconductor industry, it is more important to prevent ESD. In non-semiconductor industrial production, the usual way to prevent ESD i...

AI Technical Summary

Problems solved by technology

Will ultimately affect the electrospinning process

[0006] 2. Since the final film is formed by stacking multiple layers of nanofibers, the accumulation of surface charges will weaken the bonding between layers, which will reduce the density of the film (in thickness)

This is extremely unfavorable for water filtration applications

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