The role of high-voltage power supply on electrostatic polarizations

I、 What is electrostatic polarization?

Electrostatic polarization is a process that uses high-voltage discharge technology to generate an electrostatic field on the surface of meltblown fabric, allowing the charges in the electrostatic field to reside inside the polypropylene molecules.

II、 Why is electrostatic polarization necessary?

a.The filtration performance of meltblown fabric itself is actually only below 70%, and relying solely on mechanical blocking to prevent viruses and bacteria is not enough. Simply increasing the weight and thickness of the material will greatly increase the filtration resistance.

b. By using the process of electrostatic polarization to add electrostatic charges to the meltblown fabric and utilizing electrostatic adsorption to improve filtration efficiency, it can reach up to 99.9%. That is to say, achieving

III、 What is the principle of polar adsorption?

Electret air filtration materials utilize the inherent polarizability of fibers to electrostatically adsorb dust and capture bacteria and viruses. The electrostatic charge of polypropylene melt blown fibers is different from that of friction bands in ordinary materials. Frictional electrification is a temporary charging phenomenon where surface charges are temporarily accumulated, with positive and negative charges accumulating on the surface. The charge of the polarizable fibers is an additional internal charge added by external high voltage. Due to the insulation and water repellency of polypropylene, these charges are firmly locked in the ultrafine fiber molecular structure of the meltblown fabric and will not be easily neutralized or eliminated. Only when fine particles enter the interior of the meltblown fabric, the electrostatic effect and ultrafine fiber structure begin to play a role. The electrostatic field and particle flow capture bacteria and viruses, causing their proteins and nucleic acids to mutate and damage, destroying the surface structure of bacteria and leading to bacterial death.

IV、The role of the high-voltage power supply

The role of high-voltage power supply in electrostatic polarizations is indispensable. Without the support of high-voltage power supply, the phenomenon of electrostatic polarizations cannot be achieved. Below are several functions of high-voltage power sources:

Improve polarization efficiency

Because the electret requires high voltage to attach charges. High voltage power supply can provide stable high-voltage output for electrostatic polarization devices, making it easier for materials to generate polarization effect in high-voltage electric fields. The polarization effect is a phenomenon in which charges are distributed on the surface of a material, and this distribution can be maintained for a long time, thereby enabling the material to have long-term electrostatic adsorption function. Therefore, high-voltage power supplies play a crucial role in electrostatic polarization technology, which can improve polarization efficiency and reduce energy waste.

Ensure equipment stability

The stability of high-voltage power supply directly determines the working stability of electrostatic polarization equipment. It can achieve a high potential on the surface of an electrostatic polarizer, forming a strong electric field. This high potential enables electrostatic polarizations to maintain charge for a longer period of time without rapidly losing charge due to environmental factors such as air humidity or temperature changes. If the voltage output of the high-voltage power supply fluctuates greatly, it may cause uneven charge distribution on the surface of the material, thereby affecting the adsorption effect of the equipment. Therefore, when designing electrostatic discharge devices, it is necessary to choose high-quality high-voltage power sources to ensure that they can provide stable output voltage under various working conditions.

Ensure safety

Static electrostatic discharge technology may generate electrostatic sparks during operation, which may pose a threat to the safety of the equipment. Therefore, high-voltage power supplies need to have sufficient safety protection measures, such as short-circuit protection, overcurrent protection, etc., to ensure that the power supply can be cut off in a timely manner under abnormal conditions and prevent accidents from occurring. At the same time, the output voltage of the high-voltage power supply also needs to comply with relevant safety standards to ensure the safety of the operator.

Overall, high-voltage power supplies play a crucial role in electrostatic polarization technology. It can not only provide a sufficiently strong electric field, improve polarization efficiency, reduce energy consumption, but also ensure the stability and safety of the equipment due to the stability and uniformity of the provided charge. Therefore, in the future development process, we need to continuously optimize high-voltage power supply technology, improve its performance and stability, in order to promote the application and development of electrostatic polarization technology in more fields