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.

What are the colors of different gases in the plasma cleaning machine

What are the colors of different gases in the plasma cleaning machine

The arc starting device of the plasma cleaning machine enables the atoms, ions or molecules with active energy excited state to emit light further down, thus forming the color of the plasma. Because the energy levels in each gas have different energy conversion, each process gas exhibits different luminous properties, resulting in different color properties. Typical gas colors commonly used in plasma cleaning are as follows: CF4: Blue SF6: Light blue SiF4: Light blue SiCl4: Light blue Cl2: Light green CCl4: Light green H2: Pink O2: Light yellow N2: Red to yellow Br2: Red He: Red to purple Ne: Brick red Ar: Dark red The glow color of the plasma cleaning machine can be used not only to identify which process gas is, but also to qualitatively evaluate whether the process gas contains no pollutants.

MORE +
Selection Guide of vacuum plasma cleaning machine

Selection Guide of vacuum plasma cleaning machine

The plasma cleaning technology, which originated in the early 20th century, has been widely used with the rapid development of high and new technology industry, and has occupied a key position in many high and new technology fields. Plasma has a great influence on the industrial economy and human civilization, and has been the first to promote the development of the electronic information industry, especially the semiconductor and optoelectronic industries. Since plasma cleaning machine is used more and more in more and more industries, how to choose a suitable plasma cleaning machine has become a concern of people, today we will talk about how to choose a plasma vacuum plasma cleaning machine. In the choice of plasma plasma cleaner, we mainly consider the following aspects. The model of plasma cleaning machine is firstly determined by the cavity size. The cavity size is mainly considered from the following two aspects. 1. Workpiece size: In general, the classification of vacuum plasma cleaning machine is mainly according to the cavity size and cavity material to divide, the choice of cavity size should first consider is the size of the workpiece, that is to say, at least to be able to put the workpiece down, if the workpiece even put can not put down, then consider other factors also does not have much meaning. 2. Production Capacity: For products with high production capacity requirements, the cavity size must be selected according to the production capacity. The larger the cavity size is, the more products will be processed at one time. If the production capacity requirements are not high, the workpiece size will be given priority. When the workpiece can be put down, we can calculate the appropriate cavity size according to its production capacity. The second question we need to consider is what frequency to choose for the plasma cleaner. Frequency selection: The frequencies commonly used today are 40KHz and 13.56MHz and 20Mhz. The self-bias voltage of 40kHz is about 1000V, that of 13.56mhz is about 250V, and that of 20MHz is even lower. These three excitation frequencies have different mechanisms. The reaction of 40kHz is physical reaction, the reaction of 13.56mhz is both physical reaction and chemical reaction, and the reaction of 20MHz is physical reaction but the main reaction is chemical reaction. Cavity material selection: Now commonly used cavity materials have the following: quartz cavity, stainless steel cavity, aluminum cavity, the three cavities have their own advantages, quartz cavity temperature is low, and is not easy to react. Advantages of aluminum profile: 1, aluminum profile low density, high strength, better than steel, with better mechanical processing performance. Aluminum has good conductivity, heat conduction and corrosion resistance. The compatibility of the material to the chemical reaction is good, not easy to produce metal pollution, will not produce pollution. Vacuum pump selection: In the end is the choice of domestic, or imported, dry pump or oil pump, single stage pump, or bipolar pump, each vacuum pump selection can be based on the actual needs of customers, here will not be repeated. Gas path selection: General vacuum plasma cleaning machine is a two-channel gas, but this can not meet all the processing requirements, if more reaction gas is needed, the airway should be appropriately increased, this is also according to the actual needs of users, choose multi-channel gas.

MORE +
Introduction to cleaning principle of plasma cleaning machine

Introduction to cleaning principle of plasma cleaning machine

The principle of the plasma cleaning machine, mainly through the plasma acting on the surface of the material, cause a series of physical and chemical changes, the use of active particles and high-energy rays, and the surface organic pollutant molecules reaction, collision formation of small molecules volatile, removed from the surface, achieve the cleaning effect. Vacuum plasma cleaning machine is the use of rf power supply in the vacuum chamber to produce high-energy disordered plasma, under a certain pressure, the surface of the product plasma bombardment, so as to achieve the purpose of cleaning. Cleaning and etching: For example, in the plasma cleaning machine cleaning gas is usually used oxygen, after accelerating the bombardment of electrons into oxygen ions, free radicals, strong oxidation. Pollutants on the surface of parts, such as grease, flux, photographic film, mold release agent, punch oil, etc., will be rapidly oxidized into carbon dioxide and water, and through the vacuum pump discharge, in order to achieve the purpose of cleaning the surface, improve the wetting and adhesion. After plasma treatment at low temperature, the properties of the material body will not be affected. Because plasma cleaning is carried out under high vacuum conditions, the various activated ions in the plasma have a great degree of freedom, and they have a strong permeability, which can be processed for complex structures, including thin tubes and blind holes. Introduction of functional groups: By using N2, NH3, O2 and SO2 plasma to treat the polymer material, the chemical structure of the surface can be changed, so as to introduce the corresponding functional groups: -NH2, -OH, -COOH, -SO3H, etc. Such functional functional groups, such as polyethylene, polypropylene, polystyrene, polytetrafluoroethylene, etc., can be transformed into functional group materials with improved surface polarity, wettability, adhesiveness and reactivity, greatly increasing their application value. By low temperature plasma treatment of fluorine-containing gases, fluorine atoms can be introduced into the substrate surface, thus making the substrate hydrophobic, as opposed to oxygen plasma. Aggregation: Many vinyl monomers, such as ethylene, styrene, etc., can be under the condition of the plasma, without other catalyst and initiator, it can implement polymerization on the surface of workpiece, even in the conventional polymerization conditions cannot polymerization of methane, ethane, benzene, etc., can also be used under the condition of the plasma cleaning machine to clean the surface polymerization. The polymer layer can achieve the effect of being very dense and tightly bound to the matrix material.

MORE +
Improvement of plasma treatment technology and bonding coating performance

Improvement of plasma treatment technology and bonding coating performance

The barrier coating can be used on the inside and outside of the package, but many factors need to be considered in the specific choice of which method, plasma treatment technology is an effective method in this application. The permeability of the gas in different parts of the PET container is also different due to the biaxial orientation of the molecules inside the plastic. The outer coating is easy to cause mechanical damage. But in order to improve the scratch resistance, secondary coating process can be used for treatment. The advantage of inner coating is that it can prevent the change of packaging bottle material from having an impact on the food performance, but the inner layer is in direct contact with the food, so the interaction between the two must be considered. The coating on the inside of the filling bottle is subject to intense cleaning and may fall off during cleaning. In order to prevent fracturing of the bottle body, the outer space of the bottle body needs to be vacuumed when the vacuum coating system works. In addition to improving the mechanical and optical properties of the polymer, it is necessary to ensure that the polymer has good bonding properties, so plasma surface treatment is needed. The substrate surface condition before coating treatment is an important factor to determine the performance of vacuum deposition barrier coating. Many common polymers have low surface energy, so it is difficult to get a good barrier layer by coating treatment. The surface of the material can be treated by plasma treatment with high-energy ions, free radicals, electrons and neutral particles, which can make the surface modified molecules reach a certain depth. In the process of plasma surface treatment modification, not only dirt (such as organic matter) can be removed, but also some functional polar groups can be generated, which promote the bonding and generate the compensation effect through crosslinking. Corona discharge is often used in the process of winding coating, which is efficient and economical for many polymers. According to the practical application, the newly developed surface treatment technology can be used to ionize the mixed gas in the rf plant, combine with the DC magnetron sputtering technology, and use the plasma treatment technology to oxidize, nitride, ammoniate or hydrolyze the surface, so as to enhance the surface energy of the material and improve its binding performance. In addition, the surface morphology of selected materials also has a great influence on the performance of the barrier layer. For example, a smooth, flat base is easier to coat with high-quality septal faults.

MORE +
Surface treatment of carbon fiber plasma improves hydrophilicity

Surface treatment of carbon fiber plasma improves hydrophilicity

As an important fiber material, carbon fiber has high specific strength, high specific modulus, high temperature resistance, corrosion resistance and other excellent properties. It has been widely used in national defense and military industry, aerospace, weapons and equipment, transportation, biomedicine and other high-tech industries. But, as a result of carbon fiber is made of flake graphite crystallite organic fiber, such as along the fiber axial inclination of microcrystalline ink material, its surface is highly crystallization and non-polarity flake graphite layer structure, chemical inertness, lead to their table interface performance is poorer, the serious influence subsequent comprehensive performance of composite materials, is limited under the specific conditions of application, plasma surface treatment technology can improve the problem. At present, surface modification of carbon fiber has become an indispensable part in the process of carbon fiber production. Manufacturers such as Toray of Japan, Mitsubishi Rayon of Japan and Siguri of Germany have used surface modification as an important indicator of carbon fibre quality. Therefore, surface modification of carbon fiber to improve its surface hydrophilic properties is the key to the production and application of carbon fiber. In the past few years, a great deal of research has been done on the surface modification of carbon fiber. Among these factors, improving the surface roughness and increasing the surface chemical functional groups are the keys to improve the surface interface properties of carbon fiber. The common methods of surface modification of carbon fiber include surface oxidation, surface coating, high-energy ray irradiation, supercritical fluid surface grafting and plasma surface modification. The electrochemical oxidation process has the characteristics of strong continuity of production and easy control of process conditions, which has been applied in industry. But it still USES a lot of chemicals, consumes a lot of energy, produces a lot of waste water and liquid, and is difficult to oxidize for high-modulus carbon fiber, requiring extended treatment time. Compared with the traditional plasma surface modification technology, it is the most widely used method with the advantages of clean environment protection, time saving and high efficiency. The working principle of plasma surface treatment mainly includes two aspects: on the one hand, free radicals and polar groups are formed on the fiber surface through active particles, so as to improve the free energy and wettability of the fiber surface; On the other hand, the surface area and surface roughness of the fiber are increased by etching to remove pollutants from the fiber surface. The surface modification of carbon fiber in aqueous solution was carried out by surface treatment of atmospheric plasma cleaning machine, and the hydrophilic modification of carbon fiber surface slurry was carried out at the same time by using the interaction between active particles and water molecules in plasma.

MORE +
Plasma surface processor lithium battery electrode coating pretreatment

Plasma surface processor lithium battery electrode coating pretreatment

The production and manufacture of lithium ion battery is a process closely linked by each process step. Generally speaking, the production of lithium battery includes the fabrication process of electrode, fabrication process of cell and assembly process of battery. In the three stages of the process, each process can be divided into several key processes, each step will have a great impact on the final performance of the battery. So the application of plasma surface processor in lithium battery industry arises at the right moment. Lithium battery Market Analysis: With the in-depth study of the relationship between electrode material structure and performance, the design of positive and negative electrode materials with a variety of structured structures or doped with a variety of composite structures at the molecular level will strongly promote the research and application of lithium ion batteries. After nickel-Cadmium and nickel-hydrogen batteries, lithium-ion batteries will be a very long time in the future, with good market prospects. According to the demand trend, electric vehicle market will gradually become a large field of lithium battery application. GGII predicts that the global sales of new energy vehicles in 2022 will reach 6 million units, an increase of 2.7 times compared with 2017, which is affected by the following factors: continuous promotion of policies, technological progress, changes in consumer habits, popularization of supporting facilities, and the demand for lithium batteries for electric vehicles will exceed 325GWh in the same period, an increase of 3.7 times compared with 2017. Meanwhile, competition in the lithium battery industry will mainly focus on the field of new energy vehicles. Power battery in the future will be the largest in lithium ion batteries growth engine, its development in the direction of high energy density, high security is set, the trend of high-end digital lithium ion battery power battery and lithium ion battery market is the main growth point, lithium electricity under 6 microns copper foil will become key raw materials of lithium ion battery, become the focus of the mainstream enterprise layout. Selection of coating equipment and coating process: Coating process includes: uncoiling → splicing → tension control → coating → drying → rectifying → Tension control → rectifying → winding and so on. Coating technology is complex, and factors influencing the coating effect is more, such as: the manufacturing precision of equipment, the stability of the equipment operation, dynamic tension control in the process of coating, drying air flow and temperature control curve, such as size, so choose the appropriate coating process is very important, the plasma surface treatment machine will show the reliability of it. Common coating methods need to be considered from the following aspects: coating layer number, wet coating thickness, coating liquid rheological property, required coating accuracy, coating support or substrate, coating speed. Base materials - Copper foil and aluminium foil: Surface tension: the surface tension of copper and aluminum foil must be greater than the surface tension of the coating solution, otherwise the solution on the substrate tile will be very difficult, resulting in poor coating quality. One rule that must be followed is that the surface tension of the solution to be coated should be 5dynes/cm lower than the substrate, although this is only a rough calculation. The surface tension of solution and substrate can be adjusted by adjusting the formula or substrate surface treatment. The measurement of both surface tensions should also be used as a test item for quality control. Because the coating process has a high demand on the surface tension of the substrate, so the plasma cleaning can effectively solve this problem. Before sputtering, painting, bonding, welding, brazing and PVD and CVD coating, the surface of aluminum foil metal often has organic matters and oxidation layers such as grease and grease, which all need cleaning treatment to get a completely clean and non-oxidized surface. However, most of the existing technologies use chemical cleaning methods, which require solvents, are not environmentally friendly, and are prone to "hydrogen embrittle" phenomenon. The deconvolution effect is not ideal, the deconvolution speed is slow, and the mechanical performance index of aluminum foil is easily affected. The use of plasma cleaning surface processor can solve the above problems. The anode and cathode materials of lithium battery pack are coated with the anode and cathode materials of lithium battery. When the electrode materials are coated with the metal strip, the metal strip needs to be cleaned. The metal strip is generally aluminum or copper thin. Dry cleaning plasma cleaning function can effectively solve the above problems.

MORE +
< 1...222324...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