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 +
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 +
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 +
Plastic plasma surface treatment

Plastic plasma surface treatment

Plastic is a solid substance based on organic macromolecules, which can be synthesized artificially or modified by natural products. It can be divided into thermoplastic materials (fusible, castable, and mouldable) and thermosetting materials (castable only in monomer state, polymerizable), which are then cured. In the pure state, plastic is a good insulating material with densities between 0.9g/cm3 and 1.5g/cm3 (except in the foamy state). Generally speaking, it is combustible. Plastic has lower hardness, stiffness and strength than metal building materials. Different copolymers may have rubber elastic properties. Plastics can also be made harder than steel by various modifications, such as adjusting their electrical conductivity, through additives and fillers or by plasma surface processors. Typical defects on plastic surfaces: Adhesives, paints, printing inks and other adhesion performance is poor, low hardness, poor wear resistance; The following characteristics can be improved or completely changed by plasma treatment: the wettability and adhesion of coating can be obviously improved by plasma surface treatment for plasma activation and etching. Most plastics have very little surface tension. Its surface tension is generally lower than that of most liquids, which are the building blocks of binders, paints, and paints. As a result, the coating is less wettability and therefore less adhesion because most plastics have non-polar properties. The oxygen plasma surface treatment has a significant effect on the increase of surface tension of non-polar plastics, which forms polar bridge bonds due to the high activity of oxygen free radicals in the coated liquid. This increases the surface tension and wettability of the plastic, which increases the surface area of the plastic as it is etched, allowing it to bond better.

MORE +
The plasma cleaning machine adds hydrophilicity to the material

The plasma cleaning machine adds hydrophilicity to the material

In order to better tell you why the plasma cleaning machine can make the material surface hydrophilicity, first of all we have a general understanding of hydrophilicity, the following is some basic explanation of hydrophilicity Baidu Encyclopedia. Hydrophilic property; Hydrophilicity, in layman's terms, has a stronger affinity with water, attracts water molecules, or is easily dissolved in water. Hydrophilic definition: Molecules with polarized groups have a strong affinity for water and can attract water molecules or dissolve in water. The molecules form solid surfaces that are easily wetted by water. Having this property is the hydrophilicity of the substance. Hydrophilicity is a physical property of molecules that can form transient bonds with water through hydrogen bonds. As a result of thermodynamics, this molecule is soluble not only in water but also in other polar solutions. A hydrophilic molecule, or the hydrophilic part of a molecule, capable of polarizing it to form hydrogen bonds and making it more readily soluble in water in oil or other hydrophobic solutions. Hydrophilic and hydrophobic molecules may also be referred to as polar and non-polar molecules, respectively. Hydrophilic principle: Easy hydrogen bond with water is called hydrophilicity. Many hydrophilic groups, such as hydroxyl, carboxyl, amino, and sulfonic acid groups, readily bind to hydrogen bonds and are thus hydrophilic. From the description of the hydrophilic principle mentioned above, we can clearly see that, due to the presence of hydrophilic groups on the surface of the material, these hydrophilic groups are easy to bond with hydrogen bonds, resulting in hydrophilicity. Therefore, it is easy to explain why plasma cleaning makes the material surface hydrophilic. Principle of making materials hydrophilic by plasma cleaning machine: Plasma cleaning machine, also known as plasma surface treatment, is a new high-tech technology, using plasma to achieve conventional cleaning can not achieve the results. Plasma is a state of matter, also known as the fourth state of matter, does not belong to the commonly said solid gas liquid three states. When enough energy is applied to the gas, it dissociates and becomes a plasma. The active components of plasma include ions, electrons, atoms, activating groups, excited nuclides and photons, etc. When the reactive gas is passed into the plasma cleaning machine, complex chemical reactions can occur on the surface of the material, and new functional groups are introduced, such as hydrocarbon group, amino group, carboxyl group, etc., all of which are active groups, which can significantly improve the surface activity of the material. After being treated by gas plasma such as NH3, O2, CO, Ar, N2 and H2, ordinary materials will contact with air, and increase the surface -COOH,-C=O, -NH2, -OH, and other groups to increase their hydrophilicity. The hydrophilic principle of the plasma cleaner is simply that the active particles in the plasma react with the surface of the material to produce hydrophilic groups, thus producing hydrophilicity.

MORE +
Operating principle of vacuum plasma cleaning machine pump

Operating principle of vacuum plasma cleaning machine pump

Low pressure vacuum plasma cleaning machine is a kind of cleaning equipment that depends on the activation of the material in the plasma state to remove the surface stains of the object. It belongs to dry cleaning in industrial cleaning, which requires vacuum pump to produce vacuum conditions that meet cleaning requirements. The required plasma is mainly produced by specific gas molecules in special occasions such as vacuum and discharge, such as low-pressure gas glow plasma. Plasma cleaning needs to be in the vacuum state, so a vacuum pump is needed to complete the vacuum pumping work.   Its main principle steps are as follows: first, the workpiece to be cleaned is sent to the vacuum chamber for fixation, then the vacuum pump and other devices are started, vacuum is pumped, and the vacuum is discharged to about 10Pa vacuum degree. Then the gas used for plasma cleaning is introduced into the vacuum chamber (different gases, such as oxygen, hydrogen, argon, nitrogen, etc., are selected according to different cleaning materials), and the pressure is maintained at about 100Pa. A high frequency voltage is applied between the electrode and the grounding device in the vacuum chamber, which causes the gas to be broken down and ionized by glow discharge to produce plasma. After the plasma generated in the vacuum chamber has completely covered the cleaned workpiece, the cleaning work begins. The cleaning process lasts from tens of seconds to several minutes. The whole process depends on electromagnetic bombardment and surface treatment in the field of plasma. Most physical cleaning processes require high energy and low pressure. Before the bombardment, the atoms and ions on the surface of the object are bombarded to their maximum velocity. Because it takes a lot of energy to speed up the plasma, atoms and ions can travel faster in the plasma. The lower pressure is needed to increase the average distance between the atoms before they collide, and the longer the average free path, the greater the chance of bombarding the ions on the surface of the object being washed. This allows for surface treatment, cleaning and etching (there is a slight etching process during cleaning); When the cleaning is complete, the evaporating dirt and cleaning gas are expelled, while the air is returned to the indoor vacuum to return to normal atmospheric pressure.   During cleaning, in the vacuum environment of vacuum chamber controlled by vacuum pump, the gas flow determines the luminance chroma: if the color is heavy, it means that the vacuum degree is low and the gas flow is large; If it is white, it means high vacuum and low gas flow. The specific needs according to the need of the treatment effect to determine the vacuum pump to achieve the vacuum degree.   As a kind of precision dry cleaning equipment, vacuum plasma cleaning machine manufacturers mainly used for cleaning hybrid integrated circuit, monolithic integrated circuit shell and ceramic substrate; It is suitable for precise cleaning of semiconductor, thick film circuit, component before packaging, silicon wafer after etching, vacuum electronics, connector and relay, etc. It can remove organic matter and oxide layer such as grease and oil on metal surface. It can also be used for surface activation of plastics, rubber, metals, ceramics, and life science experiments.

MORE +
< 1...789...43 > 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