Factors that affect the electrostatic properties of textiles

Factors that affect the electrostatic properties of textiles

(1)Hydrophilic properties of textiles

The better the hydrophilicity of the fiber, the more moisture absorption, the lower the charge, and the better the antistatic effect. Because it is easy to form surface water film or water veins in the fiber surface and microcapillary, which is conducive to the escape of electrons or ions. Natural fibers such as cotton, wool, silk, hemp, etc. have high hygroscopicity and low resistance, and the electrostatic phenomenon is not serious, while synthetic fibers are prone to static electricity due to low hygroscopicity and high crystallinity.

(2)Relative humidity of air

The lower the relative humidity of the air, the lower the moisture absorption rate of the fiber. Even hydrophilic fibers are prone to static electricity due to the low moisture regain. Because even hydrophilic fibers are insulators when they are absolutely dry.

(3)Friction conditions

The rougher the fiber surface, the greater the friction coefficient, and the more contact points, the easier it is to generate static electricity.

The faster the relative friction speed between the surfaces of two objects, the greater the probability of point contact, the greater the charge density, and the higher the potential difference. During friction, the greater the pressure between the fibers, the greater the friction area and the greater the amount of charge.

(4) The temperature of the air

Temperature also has an effect on the amount of static electricity of the fiber material. As the temperature rises, the resistance drops and the amount of charge decreases. But the influence of temperature on static electricity is much smaller than the influence of relative humidity.

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