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detail the application of small plasma cleaning machine

detail the application of small plasma cleaning machine

Small plasma cleaning machine also known as atmospheric plasma surface treatment instrument, is a high-tech technology, using plasma to achieve conventional cleaning methods can not achieve the effect. A plasma is a state of matter, also known as the fourth state of matter. A gas becomes a plasma when enough energy is applied to separate it. The "active" components of plasma include: ions, electrons, active groups, excited nuclides (metastable state), photons, etc. Plasma cleaning machine is to use the properties of these active components to treat the sample surface, so as to achieve the purpose of cleaning. Atmospheric pressure plasma cleaning machine can be selected with a variety of types of nozzle, used in different occasions, to meet a variety of different products and treatment environment; Small size of equipment, easy to carry and move, save space; In-line can be installed In the production Line of equipment to reduce the input cost; Long service life, low maintenance cost advantages. Sing Fung Intelligent  Manufacturing small plasma cleaning machine is widely used in: 1. Plasma surface activation/cleaning; 2. Bonding after plasma treatment; 3. Plasma etching/activation; 4. Plasma degumming; 5. Plasma plating (hydrophilic and hydrophobic); 6. Strengthen the state character; 7. Plasma coating; 8. Plasma-ashing and surface modification. Plasma cleaning machine is more environmentally friendly than ultrasonic cleaning machine, a higher level cleaning machine (processor), does not need cleaning agent, does not have any pollution to the environment, the use cost is low, can improve the product level, improve product quality, solve the technical problems of the industry. Application of plasma cleaner in brush circuit board industry; Medical diagnostic industry plasma cleaning machine application: medical device industry plasma cleaning machine application: elastomer industry plasma cleaning machine application, optical industry plasma cleaning machine application: packaging industry; Automobile manufacturing; Nanotechnology; Precision instruments, etc. Application of plasma cleaning machine in semiconductor industry: Filling - Improve the adhesion of the perfusion; Bond Pad Cleaning - Improves wire welding by bonding Pad cleaning; Polymer binding - Improves the binding properties of plastic materials. Application of plasma cleaning machine in PCB industry: The drilling hole through the multi-layer circuit board will leave residue and stain on the hole wall. Teflon (teflon) activated carbon removal disc base plate cleaning template passivation; Plasma cleaning machine in-line installed In the production Line. Application of plasma cleaning machine in medical diagnosis industry: Activation - Improves the adhesion of cells and biomaterials to the clinical diagnostic platform; Amination - Amination provides a state fixed point for biological and sensor molecules on polymer materials; Functional groups - Improve the selective adhesion of bioactive molecules to cell culture platforms. Application of plasma cleaning Machine in medical device industry: Microfluidics - Improves analytical flow characteristics through microfluidics devices; Catheters - Reduced protein adherence to catheters leads to decreased thrombosis and increased biocompatibility; Drug delivery - Solves the problem of drug adhesion to the wall of the measuring chamber; Anti-biological contamination increases the biocompatibility of medical devices in vitro and in vivo. Application of plasma cleaning Machine in elastomer Industry: Surface viscosity reduces the surface viscosity of seals and O-rings; Bunting to improve the bond bunting of artificial rubber. Application of plasma cleaning machine in optical industry: Lens cleaning Ultra-clean optical lenses; Ophthalmology improves contact lens infiltration; Improve optical transmission of fiber connector.

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Plasma properties

Plasma properties

Plasma state is often called "supergas", it and gas have many similarities, such as: no definite shape and volume, has liquidity, but also has a lot of unique properties. The particles in a plasma have a population effect, and as long as a particle disturbance, the disturbance propagates to the ionized particles in each plasma. Plasmas themselves are good conductors. A plasma differs from a normal gas in that it is an ionized gas. Due to the presence of negatively charged free electrons and positively charged ions, there is a high conductivity and strong coupling of electromagnetic fields: charged particles can be coupled to the electric field, and charged particle flows can be coupled to the magnetic field. Plasma was described using electrodynamics, and a theory called magnetohydrodynamic was thus developed. Plasma: Unlike ordinary gases, a plasma contains two or three different components: free electrons, positively charged ions and unionized atoms. This allows us to define different temperatures for different components: electron temperature and ion temperature. In mildly ionized plasma, the ion temperature is generally much lower than the electron temperature, which is called "low temperature plasma". Highly ionized plasmas with high ionic and electron temperatures are called "high temperature plasmas". The interaction between the constituent particles of the plasma is also much larger than that of ordinary gases. Rate distribution: The velocity distribution of general gas satisfies The Maxwell distribution, but the plasma may deviate from the Maxwell distribution due to its coupling with the electric field. Surface isoexciter effect: Experiment we put metal particles as plasma (metal crystal because of its internal exist a large number of free electrons can move - - with quantitative charge, free distribution, collision and will not lead to the disappearance of the charge - so the metal crystals can be seen as the electron plasma), due to the dielectric coefficient of metal in the visible and infrared wavelengths is negative, so when the metal and dielectric composite as composite structure can happen a lot of interesting phenomenon. When light waves (electromagnetic waves) incident to the metal and medium interface, free electrons on the surface of the metal collective oscillation occurs, if the oscillation frequency of the consistent with the frequency of the incident light wave will produce resonance, then to form a special electromagnetic mode: electromagnetic field were limited within the scope of the metal surface is small and enhancement, this phenomenon is called from the excimer phenomenon such as surface. This electromagnetic field enhancement effect can effectively improve the molecular fluorescence signal, atomic high harmonic generation efficiency, and molecular Raman scattering signal. On a macroscopic scale, this phenomenon is manifested as a significant increase in the transmittance of metallic crystals at a specific wavelength.

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Plasma surface modification of polymers

Plasma surface modification of polymers

In the use of solid polymer materials such as plastic film, rubber and fabric, the properties of the material are not only related to its bulk properties, but also the surface properties of the material account for a considerable proportion. For example, involving adhesion, adsorption, friction, surface hardness, etc. Therefore, surface modification of materials is often carried out in order to meet the requirements of multifunctional materials in modern society. A new dry modification method, plasma surface modification, is introduced in this paper. Plasmas are composed of electrons, ions, atoms, molecules and free radicals, as well as photons. They are generally electrically neutral. Plasma is a state of existence of all kinds of materials, it is the same level of material existence form with solid, liquid, gas, some people say that plasma is the fourth state of matter. In fact, most of the matter around the sun and in the universe exists in plasma. We also see plasmas in our daily life. The most common is flame. A flame can be regarded as a plasma state in which combustible materials release energy and excite air and other volatile gases, which is a "primitive" artificial plasma. At present, among the artificial plasma methods, there are more radiation excitation methods, including radiofrequency glow discharge (10~100MHZ, RF) and microwave discharge (more than 1GHZ, MW). In the surface modification treatment of polymer materials, both of them are used. RF discharge plasma is more commonly used, but the low-pressure plasma generated by MW method is more evenly distributed and the surface treatment of the material is more uniform.

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Plasma and surface interactions

Plasma and surface interactions

plasma-surface interactions, such as sputtering, have been discovered for more than a century, but only in combination with the study of controlled thermonuclear fusion have they been rapidly developed. In the early stage of controlled thermonuclear fusion, unipolar arc, gas cycle and other phenomena have been discovered and studied. However, the plasma parameters were relatively low at that time, so these studies did not attract enough attention. In the 1970s, due to the progress of controlled thermonuclear fusion, especially the tokamak, the importance of impurity problem was gradually realized, and more and more work was put into this subject, which developed into a branch of controlled thermonuclear fusion research. Therefore, as a research field, the interaction between plasma and surface mainly refers to the interaction between plasma and surface at high temperature in controlled thermonuclear fusion devices. Plasma and surface interaction is a frontier research field, which is closely related to plasma physics, surface physics, plasma chemistry, atomic physics, molecular physics and other disciplines. Since plasma can be divided into low temperature plasma and high temperature plasma, the interaction between plasma and surface can also be divided into two aspects. The interaction between low temperature plasma and surface occurs mainly in plasma cutting, welding, smelting and surface treatment, between the walls and electrodes of the magnetofluid generator, and between the plasma formed on the surface of the rocket housing as the launch vehicle passes through the atmosphere, and so on. This plasma has a temperature of about 103 to 104K, a high density, and a pressure close to one atmosphere. High temperature plasma surface interactions occur primarily on the surfaces of controlled thermonuclear fusion experimental installations, and on the surfaces of the first wall (that is, the solid wall directly irradiated by plasma), deflectors, apertures, and energy direct converters of magnetic mirror installations in the reaction chamber of a future fusion reactor. Near these surfaces, there are also cooler plasmas, known as boundary layers. But in the center of the reaction chamber there are millions of degrees to tens of millions of degrees, hundreds of millions of degrees of high temperature plasma, from which radiation of high-energy particles and electromagnetic waves of various frequency bands. In fusion reactors, thermonuclear products such as energetic neutrons and alpha particles are also present. These particles and radiation reach the solid surface and produce various forms of interaction. In controlled thermonuclear fusion experiments and fusion reactors, this plasma-surface interaction has two effects. First, this interaction causes a large number of impurities that cannot participate in a nuclear reaction to leave the surface and enter the plasma, causing contamination. This not only reduces the concentration of the reaction particles, but also cools the plasma, making the reaction rate decrease or even stop. Secondly, the interaction causes damage to the wall of the reaction chamber and shortens its service life. Therefore, this interaction process must be studied and controlled.

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Plasma forming device

Plasma forming device

Generally, the energy of particles in low-temperature plasma is about several to dozens of electron volts, which is larger than the bonding energy of polymer materials (several to dozens of electron volts). It can break the chemical bonds of organic macromolecules and form new bonds. However, it is far lower than high-energy radiation, which only involves the surface of the material and does not affect the performance of the matrix. The thermodynamic equilibrium conditions of low temperature plasma, electron has high energy, can fracture of material surface molecular bonds, improve particle chemical reactivity (more than hot plasma), and neutral particles temperature close to room temperature, these advantages for heat-sensitive polymer surface modification provides appropriate conditions. Plasma with different properties and application characteristics can be obtained by selecting the appropriate discharge mode. Generally, hot plasma is generated by corona discharge of gas at atmospheric pressure, and cold plasma is formed by glow discharge of gas at low pressure. The hot plasma device USES a charged body tip (such as a knife or needle tip and a slit electrode) to create an uneven electric field, which is called corona discharge. The application voltage and frequency, electrode spacing, treatment temperature and time all affect the corona treatment effect. If the voltage increases and the power supply frequency increases, the treatment intensity is large and the treatment effect is good. However, too high power frequency or too wide electrode gap will cause too many ion collisions between the electrodes, resulting in unnecessary energy loss. However, if the electrode spacing is too small, there will be induction loss and energy loss. When the treatment temperature is high, the surface characteristics change rapidly and the treatment time is prolonged, and the polar groups increase. However, if the time is too long, decomposition products may be generated on the surface, forming a new weak interface layer. Cold plasma device is set in an airtight container, two electrode form electric field with a vacuum pump to achieve a certain degree of vacuum, with gas more and more thin, the distance between molecules and the free movement of distance between molecules or ions is also becoming more and more long, the electric field, they collide and form plasma, then have a glow, so called the glow discharge treatment. The pressure of glow discharge has great influence on the effect of material treatment, and is related to discharge power, gas composition, flow velocity, material type and other factors. Different discharge modes, working material states and the factors above affecting plasma generation can be combined to form various low-temperature plasma treatment equipment.

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How to maintain plasma TV products

How to maintain plasma TV products

With the current plasma TV technology update, more friends bought plasma TV, especially like watching big movies and playing games friends are more keen on plasma TV, this is because of the technical advantages of plasma TV. Below I discuss with everybody when maintaining plasma TV, must pay attention to item. 1. Avoid heat, moisture and dust Plasma TV is well-known for its high power, so it must ensure its heat dissipation effect, otherwise it will cause fatal damage to the plasma screen, or even burn out. Do not cover the machine when the TV is on, and pay attention to ventilation. Every period of time to pay attention to clean the dust, to prevent the dust with static electricity this "invisible killer", and pay attention to moisture. 2. Avoid long-term image freeze The early plasma products are prone to local screen burns after long-time use, which makes the screen stay in one picture for a long time, just like people can't get rest from their hard work. In the case that the emission state of each plasma gas chamber remains unchanged for a long time, the picture will linger on the screen like a shadow. Therefore must not let the plasma TV fixed in the same picture for a long time, to avoid this irreparable damage. 3. Wipe the screen carefully Screen dust attracted by static electricity is inevitable, and we often have to clean the screen. But did you know that if you don't clean it properly, you can damage the screen and regret the quality of the picture? First, wipe the screen not too often, using a dedicated screen to wipe the material or soft cotton cloth. Also, do not wipe the screen with chemicals that can damage the oxide coating used to enhance the screen. Water is also not a very good cleaner because it leaves water marks on the screen. You can choose a dedicated plasma screen cleaner. 4.Ask a technician to disassemble the TV If you need to disassemble a plasma TV, don't do it yourself. Because you don't know which parts are critical, if you break a key part of the TV, it won't pay to replace it. And the plasma screen is with high voltage, private disassembly is very easy to shock, which is closely related to life.

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