图片名称

NEWS

Popular Articles

Contact Us

图片名称
图片名称

Service Hotline

13632675935

CRF

TEL：13632675935

E-mail：shaobo@sfi-crf.com

Address: 1303, Building 3, Manjinghua Science and Innovation Workshop, No.6 Songjiang Road, Songgang Street, Bao'an District, Shenzhen, China.

How does the alternating electric field of the plasma cleaner affect the discharge and surface treatment effects

How does the alternating electric field of the plasma cleaner affect the discharge and surface treatment effects

How does the alternating electric field of the plasma cleaner affect the discharge and surface treatment effects: In the process of changing the electric field generated by the plasma cleaning machine, the frequency of the electric field and the electrode spacing have an important influence on the plasma discharge phenomenon and affect the effect of plasma surface treatment. What is the relationship between the two, in order to avoid the electric field The effect of frequency on the discharge of the plasma cleaning machine, within a quarter of a cycle, the charged particles between the electrodes can reach the electrodes completely, thereby avoiding the generation of charges in the gap; therefore, when the gap is given, the The frequency of the alternating electric field at the fixed gap should be limited, otherwise the discharge process will be affected by the charge in the gap. First, consider the movement of positive ions between the plates, and then the corresponding distance and frequency between the electrodes can be calculated. Based on the influence of space charge, it can be divided into three situations: when there is no space charge accumulation, the breakdown conditions are similar to static charge; when part of the space charge exists, the breakdown voltage is slightly lower than the static charge; when the space charge increases, the ion space charge It will oscillate between the poles, and the breakdown voltage is lower than the static charge. For an atmospheric piezoelectric field with a distance between electrodes of 1 cm, the relationship between the alternating electric field breakdown voltage of the plasma cleaner and the electrostatic breakdown electric field frequency is very complicated. Under the condition of an alternating magnetic field, the relationship between the breakdown voltage and the air pressure of the plasma cleaner is also different from that of static electricity. Now, the method of generating plasma by alternating electric field has been widely used in industrial applications and research fields. For example, intermediate frequency power supply, low-pressure radio frequency power supply and microwave source for low-temperature plasma discharge. Chengfeng Zhizao has focused on the research and development of plasma cleaning machine technology for 20 years. If you want to know more product details or have questions about the use of the equipment, Chengfeng Zhizao is looking forward to your call!

MORE +
Plasma treatment machine manufacturers introduce to you the desizing of cotton fabric by atmospheric pressure plasma treatment

Plasma treatment machine manufacturers introduce to you the desizing of cotton fabric by atmospheric pressure plasma treatment

Plasma treatment machine manufacturers introduce to you the desizing of cotton fabric by atmospheric pressure plasma treatment: Research on the modification of fiber materials by low-temperature plasma has been carried out since the 1970s. Low-temperature plasma treatment can improve fiber wettability, easy decontamination, printing and dyeing performance, etc. The following Chengfeng Zhizhi plasma treatment machine manufacturer will explain its process. The fabric must be desizing before dyeing, printing and finishing. Different slurry desizing methods are often different. For PVA pulp, the traditional method mainly uses H2O2 or alkali high temperature desizing, usually two hot and cold water washing, which consumes water and energy, and produces a lot of waste water. In recent years, we have applied atmospheric pressure plasma technology to remove PVA slurry from cotton fabrics. After the pure cotton sizing cloth sample is plasma treated, the cellulose itself is etched and the loss of water is relatively small, so the weight loss rate of the fabric. It can be considered as an important indicator that directly reflects the amount of PVA slurry that is oxidized and degraded into small molecules and disappeared by plasma. It can be seen that the plasma treatment of atmospheric pressure plasma treatment machine can cause the oxidative degradation of PVA slurry and lose weight. After the fabric containing PVA slurry is subjected to regular pressure plasma treatment, the weight loss is obvious, and the solubility of PVA in water after treatment increases, which helps For cold water desizing, these changes should be related to the changes in the chemical composition and structure of the PVA. These changes indicate that the atmospheric pressure plasma treatment machine plasma treatment will cause the PVA to undergo oxidative degradation, resulting in the reduction of CH and CC bonds, the increase of CO, C=O, O=C, and O- bonds, and the oxygen-air-helium plasma has an effect on PVA. The effect is stronger than that of air helium. Generally speaking, the PVA desizing process includes swelling, dissolution and dispersion. The molecular weight of PVA and the degree of degradation of macromolecules are two important factors affecting its desizing. XPS analysis shows that atmospheric pressure plasma treatment can cause PVA to undergo oxidative degradation and cause the PVA macromolecular chain to be cut, which is conducive to the swelling, dissolution and dispersion of PVA. Compared with the commonly used H2O2 desizing process, the atmospheric pressure plasma treatment of Chengfeng Zhizhi plasma treatment machine manufacturers can achieve the effects of water saving, energy saving and less pollution. Before plasma treatment, there is a lot of PVA slurry on the fiber, and the surface is uneven, and there are a lot of particulate matter attached, making the surface of the fiber rough. After plasma treatment, the particulate matter on the fiber surface has been significantly reduced, and the surface is relatively clean. Atmospheric pressure plasma from Chengfeng Zhizhi plasma treatment machine manufacturer has obvious oxidative degradation effect on PVA slurry. Plasma treatment increases the solubility of PVA slurry in cold water. This may be due to the degradation of PVA macromolecules into relatively small molecules due to the action of plasma, making it easier to swell and dissolve in water.

MORE +
Professionals answer the types of plasma treatment machines and plasma equipment in the industry

Professionals answer the types of plasma treatment machines and plasma equipment in the industry

Professionals answer the types of plasma treatment machines and plasma equipment in the industry: I believe people in the industry are not unfamiliar with the term plasma treatment machine, plasma equipment or plasma cleaning machine, because there are already many industrial products in China that use equipment such as plasma cleaning machine for surface cleaning. Many manufacturers are not very clear about what a plasma processor is when they need to purchase a machine, nor are they very clear about how many types of plasma equipment it is divided into. It's like sometimes when a professional manufacturer of plasma equipment made by Shenzhen Chengfeng Zhizhi receives a call from a customer, the customer proposes to buy a plasma processor, and asks which one to use, it may not be right all at once. , Because there are many types of plasma equipment such as plasma cleaning machine. Now let's make a simple classification introduction. Plasma equipment on the market currently includes: plasma treatment machine, plasma treatment machine, plasma surface treatment machine, plasma equipment, vacuum plasma equipment, plasma cleaning machine, low temperature plasma equipment, as well as plasma surface treatment equipment, roll-to-roll plasma equipment , And atmospheric plasma equipment and so on. The plasma equipments introduced now are common types in the current market. As for how to distinguish these equipments, please consult our customer service hotline for details. Therefore, customers should do some understanding before purchasing the machine, what kind of plasma cleaning machine is needed for their products for pre-processing, if they understand, then they can easily buy the products they are satisfied with when they buy the machine. Of course, professional manufacturers of plasma treatment machines like Shenzhen Chengfeng Zhizhi will provide customers with satisfactory services and products in detail, and are committed to helping customers solve problems. If standardized equipment does not meet customer needs, non-standard customized equipment can be used. , Which is a one-to-one plasma processor solution (customized solution), and to achieve customer satisfaction as the standard. Such a professional plasma equipment manufacturer can be said to have a good reputation in the industry, and the brand of Chengfeng Zhizhi plasma equipment also has a certain influence in the market. It can be said that it is the brand of choice for many companies on the market.

MORE +
Why is plasma power also used for surface treatment of powder

Why is plasma power also used for surface treatment of powder

Why is plasma power also used for surface treatment of powder: The surface treatment of the powder material using plasma power can enable the surface of the powder to achieve the effects of etching, activation, impurity removal, grafting, crosslinking, and coating, thereby changing its structure and chemical composition. There are mainly two types of powder materials: organic powder and inorganic powder. Now Chengfeng Zhizao will introduce the role of plasma power in the surface treatment of organic powder. The surface treatment of organic powder materials is usually based on inhibition to make the organic powder more dispersed and more compatible in the polymer. Therefore, the composite material formed by it and polymer has good performance in terms of force, light, electricity and so on. When the plasma power source performs surface treatment on organic powders, polymer monomers and initiating gas mixed discharge are generally used. In this method, the discharge initiates the gas to generate active particles, and can initiate the grafting of polymerized monomers to the powder surface to form a modified coating layer. In addition to processing ordinary oxide organic powders, it can also process certain materials such as carbon fiber, activated carbon, and carbon nanotubes. Oxygen plasma is used to process the nano-carbon fiber material, and the mechanical properties of the treated carbon fiber and polypropylene are much better than that of the untreated one. In addition, under normal circumstances, after the carbon nanotubes are treated with a plasma power source, the dispersion and compatibility of the composite material can be significantly improved. Chengfeng Zhizao focuses on the research and development of plasma cleaners. If you want to know more product details or have questions about the use of the equipment, please click "Online Customer Service", and look forward to your call!

MORE +
Share the magic of low-temperature plasma technology in air purification

Share the magic of low-temperature plasma technology in air purification

Share the magic of low-temperature plasma technology in air purification: In addition to the frequently shared low-temperature plasma cleaning technology, low-temperature plasma technology can also be used in air purification, sterilization, deodorization, etc., can comprehensively treat the physical, chemical, and biological effects of various pollutants, and has low energy consumption, high efficiency, Obvious advantages such as no secondary pollution. Introduction of low-temperature plasma technology made by Chengfeng Zhizhi. Low-temperature plasma technology can generate negative ions in the air: In low-temperature plasma, high-energy electrons can cause gas molecules such as oxygen and nitrogen to carry electrons, thereby generating air negative ions. This negative ions are called "air vitamins" and "longevity elements". They have good health effects and are beneficial to humans. The life activities of other organisms have a great influence. Low-temperature plasma technology can achieve the purpose of biological disinfection: Low-temperature plasma has obvious biological killing effect. This feature has also been confirmed and applied in the outbreak of the epidemic. Because of the electrostatic effect produced by the low-temperature plasma technology, current shearing force is generated on the surface of bacteria, viruses and other microorganisms. This current shearing force is greater than the surface tension of the cell membrane, which can destroy the cell membrane of the microorganisms and cause the death of the microorganisms. , To achieve the effect of sterilization. Through the above discussion, we can realize that low-temperature plasma technology can not only purify the air, but also play a role in sterilization, keeping the air in a natural and fresh state. This processing effect is also unattainable by other processing technologies. Chengfeng Zhizao has focused on plasma cleaning machines for 20 years. If you have any questions, Chengfeng Zhizao is looking forward to your call!

MORE +
The effect of low-temperature plasma surface treatment on the inter-turn insulation performance of variable frequency traction motors

The effect of low-temperature plasma surface treatment on the inter-turn insulation performance of variable frequency traction motors

The effect of low-temperature plasma surface treatment on the inter-turn insulation performance of variable frequency traction motors: Polyimide (PI) is used in the turn-to-turn insulation of traction motors of high-speed EMUs due to its excellent dielectric properties. China's high-speed railways have achieved world-renowned achievements through the introduction, digestion, absorption and re-innovation. The frequency conversion traction motor is one of the core equipment of high-speed EMUs. Its speed adjustment is carried out through pulse width modulation (PWM) technology. Due to the short rise time and high frequency of the pulse, the cable and motor terminal Impedance detuning will generate overvoltage, which will impact the inter-turn insulation of the motor, causing its insulation failure and threatening driving safety. Polyimide (PI) is used as the inter-turn insulation material of the variable frequency motor, which uses a 2/3 stacking method to wind the magnet wire, that is, there are three layers of PI film on the magnet wire as the inter-turn insulation of the motor winding. In the process of material preparation, magnet wire winding, etc., defects such as air gaps and wrinkles will inevitably occur between the inter-turn insulating materials of the frequency conversion motor. Studies have shown that the partial discharge in the insulation between the turns of the variable frequency motor is the root cause of the insulation failure of the motor. Therefore, the low-temperature plasma surface treatment can improve the partial discharge resistance of the inter-turn insulation of the inverter motor, which can significantly increase the insulation life of the motor and ensure the safe operation of electric locomotives. In recent years, low-temperature plasma surface treatment technology has been widely used in surface modification of polymer materials. Because of its simple structure and the ability to generate large-scale low-temperature plasma in atmospheric air, it is widely used in industrial production. Low-temperature plasma treatment can cause etching, cross-linking, and group introduction on the surface of the material, thereby significantly changing the surface characteristics of the material, such as hydrophilicity, hydrophobicity, flashover voltage along the surface, surface charge dissipation, space charge accumulation characteristics, etc. . The partial discharge between the insulation of the inverter motor is also a kind of gas discharge that occurs on the surface of the material in the air gap, and its working voltage is a square wave pulse voltage. Increase the intensity of the discharge in the air gap. Therefore, low-temperature plasma surface treatment can be used to only change the surface of the material without affecting the superior characteristics of its internal matrix structure. Plasma surface modification of the polyimide film can be used to improve its insulation performance. The contact angle is a key parameter reflecting the surface energy of the film, which is determined by the surface characteristics of the film. The smaller the contact angle, the stronger the hydrophilicity of the film surface and the greater the surface energy. The modification of materials by plasma is actually a process of interaction between the plasma and the surface of the material. In this process, the etching of the surface of the material, the cross-linking of molecular chains, and the introduction of polar functional groups mainly occur. The highly active plasma ionizes or excites many molecules in the air (such as H2O, 02, N2, etc.) and forms particle products (N2, O2, O, H, ultraviolet light, etc.), which are processed in the plasma During the process, it will bring higher energy and hit the PI film. On the one hand, the PI film will be cross-linked or etched, so that the inert substances in the amorphous area on the surface are eliminated and the active groups are exposed. On the other hand, the active particles will also cause the PI molecular chain to undergo a ring-opening reaction, and introduce -NH2, -COOH, -OH and other polar hydrophilic groups at the end of the molecular chain, thereby improving the hydrophilicity of the surface of the material and the surface can. In addition, the increase of polar groups and the exposure of active materials will also increase the number of carriers on the surface of the material, thereby increasing the surface conductivity of the material. The double-layer film without low-temperature plasma surface treatment is only a simple physical stacking, and it is difficult to form cross-links or cross-connections between the PI molecules between the layers, and thus cannot form a charge transfer channel, which makes Schottky emission or field emission injection into the film The internal electrons are easy to accumulate inside a layer of the film, and it is difficult to reach the second layer. In addition, the low conductivity of the interface between the l

MORE +
< 1...979899...132 > proceed page
图片名称

CRF

National Service Hotline

136 3267 5935

Contact Email

shaobo@sfi-crf.com

Address:1303, Building 3, Manjinghua Science and Innovation Workshop, No.6 Songjiang Road, Songgang Street, Bao'an District, Shenzhen, China.

图片名称

Add WeChat
Get related information

Links

Apply to exchange friend links

Copyright © Shenzhen Chengfeng Smart Co.

京ICP备10002622号-38

粤公网安备 44030602005200号

图片名称

Cheng Feng Zhi Zuang a focus on plasma research and development for 20 years

We

The services of

Inquire for free sample testing

1-to-1 program customization

24-hour online after-sales service

Source manufacturer

Get the program
%{tishi_zhanwei}%
图片名称

Scan the code for information

诚峰智造