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Plasma treatment of cellulose fibers

Plasma treatment of cellulose fibers

Plasma-treated cotton fiber is usually modified by plasma-treated surface treatment (PST), which can improve the adhesion and wettability of the fiber, improve the dyeing performance and increase the dyeing rate. Continuous low temperature plasma treatment device can desizing and refining cellulose fibers such as cotton. Plasma has been successfully used in the desizing process of open-width fabrics. The plasma can cut off the molecular bond of the fabric, increase the desizing rate, improve the dyeing performance, and shorten the pre-treatment washing process greatly, saving water, solar terms, economy and environmental protection. Hemp fiber has good mechanical and physical properties and health care properties. But because its orientation is high, the dyeing is poor, not easy to dye into dark, and the brightness is also poor. It was found that plasma treatment of ramie fiber, surface etching and introduction of hydrophilic groups could significantly increase the capillary effect, greatly improve the wettability of the fiber surface, improve the diffusion efficiency of dyes in the fiber and increase the adsorption capacity of the fiber to dyes. At the same time, the surface roughness is also increased, the surface area is increased, the weight loss rate is increased, and the grafting effect is improved after being treated by air plasma. It was found that the fabric's dry and wet rubbing fastness and washing fastness were improved when the flax was dyed with reactive dyes after grafting. The dyeing rate, color fastness and color depth of dyes have also been improved to a certain extent. In order to improve the printing effect of flax, semi-bleached and bleached linen fabrics were treated by plasma treatment, and the capillary effect of the fabrics was increased by 1 and 1.5 times respectively, and the whiteness of the raw and bleached fabrics samples was almost unchanged. Then the flax fabric is printed with reactive dye screen. The results show that the dyeing fastness of linen fabrics treated by plasma is high, and the fixing rate of reactive dyes on the fibers is greatly improved.

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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 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 generator classification

Plasma generator classification

1. High-frequency induction plasma generator is also called high-frequency plasma torch, or rf plasma torch. It USES the induction coupling without electrodes to input the energy of the high-frequency power supply into the continuous air flow for high-frequency discharge. 2. Arc plasma generator is also known as arc plasma torch, or plasma spray gun, sometimes also known as arc heater. It is a kind of discharge device that can produce directional "low temperature" (about 2000 ~ 20000 open) plasma jet. 3. Low-pressure plasma generator A low-pressure gas discharge device, generally composed of three parts: a power source to generate plasma, a discharge chamber, a vacuum pumping system and a supply system for working gas (or reaction gas). There are usually four types: static discharge device, high voltage corona discharge device, high frequency (radio frequency) discharge device and microwave discharge device.

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Can plasma cleaning machine replace ultrasonic cleaning machine and what's the difference

Can plasma cleaning machine replace ultrasonic cleaning machine and what's the difference

Believe that a lot of industrial product manufacturer of plasma cleaning machine and ultrasonic cleaning machine products are very familiar with, in many industrial products manufacturers understand the ultrasonic cleaning machine cleaning not thoroughly is similar to the idea, is there a device can replace the ultrasonic cleaning machine, so the search on the Internet to a large number of cleaning products information, may be varied, that still can't solve their doubts. Today we are going to talk about, in the end the plasma cleaning machine and ultrasonic cleaning machine have what kind of relationship? Many manufacturers of industrial products may have used ultrasonic cleaning. This equipment can be used in many industries. Its cleaning purpose is to clean the surface of the workpiece and remove the dirt from the surface of the workpiece, thus achieving a clean effect. So in that sense, a lot of people understand that ultrasonic cleaning is actually cleaning something visible on the surface. What is the purpose of the plasma cleaning machine? First to analyze the origin of the plasma cleaning machine, plasma cleaning machine, also known as plasma device, the advantages of plasma cleaning purposes, plasma cleaning machine is using the plasma for routine cleaning cannot reach the effect, such as plasma active component is ion, electrons and photons, etc, so it achieve the cleaning effect of affirmation and general cleaning products, such as ultrasonic cleaning machine is not the same. Plasma cleaning machine USES these ions and photons and other active components to treat the surface of the workpiece, and to achieve the purpose of cleaning, it is obvious that this cleaning effect is better than the ordinary cleaning. Can plasma cleaning machine replace ultrasonic cleaning machine? The answer is no, because an ultrasonic cleaner is a device for cleaning visible material on a surface, whereas a plasma cleaner is not. Plasma cleaning machine is to clean the surface of organic matter, so that the product modification, improve the rate of defects, do surface activation and other effects. So it can not replace the ultrasonic cleaning machine. Then we say that they are a complementary thing, after the ultrasonic cleaning to do the plasma cleaning machine cleaning will make the product performance to achieve better results. It is believed that many manufacturers of industrial products will have the same feeling and recognition when they combine the two types of products. Plasma cleaning machine is a dry cleaning, mainly cleaning very small oxides and pollutants. It is to use the working gas under the action of electromagnetic field to excite the plasma and the surface of the object to produce physical and chemical reactions, so as to achieve the purpose of cleaning; The ultrasonic cleaning machine is a wet cleaning, mainly cleaning obvious dust and pollutants, belongs to a rough cleaning. It is to use liquid (water or solvent) under the action of ultrasonic vibration to clean the object, so as to achieve the purpose of cleaning. The purpose of use is different, plasma cleaning machine is mainly to improve the surface of cleaning items fit effect, the surface of the workpiece is not necessarily washed clean, but the fit effect than no use to improve a lot. Ultrasonic cleaning machine is mainly used to clean the workpiece surface, improve the surface cleanliness. Plasma cleaning should use chemical method, ultrasonic cleaning is using physical method.

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Application status of plasma cleaning machine in industrial cleaning equipment

Application status of plasma cleaning machine in industrial cleaning equipment

At present, there are three main types of industrial cleaning in the world, namely chemical cleaning, physical cleaning and biological cleaning. There are physical cleaning PIG technology cleaning, dry ice cleaning, ultrasonic cleaning, high-pressure water jet cleaning, plasma cleaning and other cleaning types. After years of research and practice, more and more users begin to look for and turn to physical cleaning methods. It can be said that physical cleaning technology is the development direction of world cleaning technology. Plasma cleaning machine is one of the physical cleaning equipment. Its working principle is that the plasma cleaning machine USES gas as the cleaning medium, which effectively avoids the secondary pollution caused by the liquid cleaning medium to the cleaned objects. A vacuum pump is attached to the plasma cleaning machine, and the plasma in the cleaning chamber gently washes the surface of the object to be cleaned when working. The organic pollutants can be thoroughly cleaned in a short time after cleaning, and the pollutants can be removed by the vacuum pump, and the cleaning degree reaches the molecular level. In addition to the super cleaning function, the plasma cleaner can also change the surface properties of some materials according to the needs under certain conditions. The plasma ACTS on the surface of materials, making the chemical bonds of surface molecules recombine and forming new surface properties. For some materials with special purpose, the glow discharge of plasma cleaner not only enhances the adhesion, compatibility and wetting of these materials, but also disinfuses and sterilizes them during the supercleaning process. Plasma cleaner is widely used in the fields of optics, optoelectronics, electronics, material science, life science, polymer science, biomedicine, microfluidics and so on. The application of plasma cleaning machine, originated in the early 20th century, with the rapid development of high-tech industry, its application is more and more widely, has been in many high-tech fields, in the status of the key technologies, plasma cleaning technology has a significant effect on industrial economy and industrial civilization, especially in the semiconductor and photovoltaic industry. Plasma cleaning machine has been used in the manufacture of various electronic components, we can be sure that, without the plasma cleaning machine and its cleaning technology, there would be no today so developed electronics, information and communication industries. In addition, the plasma cleaning machine and cleaning technology and application in the optical industry, machinery and aviation industry, polymer industry, industrial pollution prevention, control and measurement, and it is the key technology of product promotion, such as optical element coating, extend the life of the mold or machining tool abrasion resistance of the layer, the middle layer of composite material, weaving or recessive lens surface treatment, micro sensor smart, advanced mechanical processing technology, artificial joints, bones, or heart valve antifriction depletion are plasma technology progress, to complete the development. Plasma technology is a new field, the field combined with plasma physics, plasma chemistry and solid phase interface chemical reaction, this is a typical high-tech industries, across a variety of fields, including chemical, material and motor, so will be challenging, also full of opportunities, because of the fast development of semiconductor and photoelectric materials in the future have to leave the plasma cleaning. Cleaning machine nearly 20 years of research and development and promotion application, has achieved more successful experience. At present, there are two main reactions between plasma and material surface, one is chemical reaction by free radical, the other is physical reaction by plasma, which will be explained in more detail below. (1) Chemical reaction Commonly used gases in chemical reactions include hydrogen (H2), oxygen (O2), carbon tetrafloride (CF4), etc. These gases react in the plasma to form highly active free radicals, which will further react with the material surface. The reaction mechanism is mainly to use the free radicals in the plasma to do chemical reaction with the material surface. When the pressure is high, it is more favorable for the generation of free radicals. Therefore, if the chemical reaction is to be the main one, it is necessary to control the high pressure to conduct the reaction. (2) Physical reaction Mainly the ions in the plasma is used as a purely physical collision, the material on the surface of the atoms or attached on the surface of the material out, because the ions in the average pressure is lower free radicals is lighter, the accumulation of a lot energy, when the physical impact, the ion energy is higher, the more some impact, so

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