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Plasma Cleaning Technology of Composite Materials and Its Application in Material Field

Plasma Cleaning Technology of Composite Materials and Its Application in Material Field

Since the advent of plasma cleaning technology, with the rapid development of electronics and other industries, its application has gradually increased, used for plasma cleaning activation modification etching to improve adhesion and so on. At present, plasma cleaning technology has been widely used in semiconductor and optoelectronic industry, including integrated circuit, semiconductor, medical treatment and so on. Next, I will introduce the application of plasma cleaning technology in the field of composite materials. 1. Improve the interfacial bonding properties of composites: Plasma cleaning technology can effectively avoid the damage of chemical solvents to the properties of the material, and introduce a variety of active functional groups to the surface of the material to increase the surface roughness, improve the surface free energy of the fiber, and effectively strengthen the bond between the resin and the fiber. The composite properties can be improved by the bonding between the fiber interfaces. The results show that under appropriate conditions, the interlaminar shear strength and interfacial properties of polyaramid ether sulfone ketone resin can be greatly improved by plasma cleaning. 2. Improving the manufacturing process properties of composite materials: Due to the poor impregnation effect of resin on fiber in LCM process, and the phenomenon of cavity and dry spot on the surface of the product, plasma cleaning technology can be considered to improve the physical and chemical properties of the fiber surface and the surface quality of the fiber preform. Under the same process conditions (pressure field, temperature field, etc.), the resin can more fully impregnate the fiber surface, improve the impregnating uniformity, and improve the process performance of the composite liquid forming. 3. Improving the coating performance of the composite surface: Conventional cleaning methods should not only use organic solvents, but also produce a lot of dust pollution in the grinding process, which has a serious impact on the environment and endangers the personal safety of the operator. But after the green plasma technology cleaning, the composite coating surface reached a better coating state, coating reliability improved, can effectively avoid coating off, defects and other problems, the surface after coating smooth, continuous, no pores. Compared with the conventional cleaning, the adhesion of the coating is significantly improved, reaching the GB/T9286 test result grade 1, and meeting the requirements of engineering application. 4. To improve the bonding performance between multiple parts of composite materials: Using the method of physical grinding, the surface roughness of the composite parts is increased, so as to improve the bonding performance between the composite parts. However, this method causes dust pollution to the environment, and at the same time, it is difficult to achieve the purpose of uniformly increasing the surface roughness of the parts, which is easy to cause the deformation and damage of the surface of the composite parts, thus affecting the performance of the adhesive interface of the parts. Therefore, a simple and easily controlled plasma cleaning technology can be used to effectively and accurately clean the contaminants on the surface of composite parts. The physical and chemical properties of the surface are improved and the good bonding properties are obtained. Due to the increasing maturity of plasma technology and the development of cleaning equipment, especially the on-line continuous plasma equipment under atmospheric pressure, the cleaning cost is continuously reduced and the cleaning efficiency is further improved. Plasma cleaning technology itself has the advantages of ease of use, reasonable use of all kinds of materials, green and environmental protection. With the gradual improvement of people's understanding of fine production, the application of advanced cleaning technology in the field of composite materials will be widely promoted.

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Characteristics of plasma dry etching technology and typical material applications

Characteristics of plasma dry etching technology and typical material applications

Plasma etching machine is also known as plasma etching machine, plasma plane etching machine, plasma surface treatment instrument, plasma cleaning system, etc. Plasma etching, is a common form of dry etching, its principle is exposed to the electronic area gas plasma, the plasma and the release of high-energy electron gas, forming a plasma or ion, when the plasma atomic accelerated by electric field can release enough force to close to the material or surface of etching, which combined with surface driving force. Plasma cleaning is actually a slight phenomenon in the process of plasma etching to some extent. Dry etching equipment includes reaction chamber, power supply, vacuum, etc. The working parts are sent to the reaction chamber, where the gases are introduced into the plasma and exchanged. Plasma etching process is essentially an active plasma process. More recently, in the reaction room there is a downstream format that will play a flexible role and users will move around to configure appropriate plasma etching methods: RIE, downstream plasma, direction plasma. Inductively coupled plasma etching (ICPE) is the result of chemical and physical processes. Whose basic principle is: under the pressure, the RF power supply to the loop coupling coil output by ICP, coupled by glow discharge, mixed etching gas glow discharge by coupling, to produce high density plasma, the electrode under the action of RF, bombarding the substrate surface, substrate semiconductor materials of chemical bonds in graphic area is interrupted, and etching gas to produce volatile substances, gas out of the substrate, the vacuum tube to pull away. For etching, and after etching for decontamination, scum removal, surface treatment, plasma polymerization, plasma ash or any other etching applications, we can produce safe and reliable plasma treatment systems according to customer requirements. The company has both traditional plasma etching system and reactive ion etching system, can produce a series of products, also can customize the special system for customers. Our company can provide fast/high quality etching, reduce plasma damage, provide the required uniformity. Plasma treatment can be applied to a variety of substrates, even complex geometry can be activated by plasma, plasma cleaning, plasma coating without problem. Plasma treatment has low thermal and mechanical loads, so low-pressure plasmas can also handle sensitive materials. Typical applications of plasma etching machines are: semiconductors/integrated circuits; Gallium nitride; Gallium aluminum nitride/gallium nitride; Gallium arsenide/aluminum gallium arsenide; Gallium arsenide. Indium phosphide, indium aluminum-arsenic/indium gallium arsenide (Inp InGaAs/InAlAs); Silicon; Silicon germanium. Silicon nitride ceramics (Si3N4); Hydrogen bromide of silicon; Zinc selenide (ZnSe); Metal; Aluminum; Chromium; Platinum; Molybdenum; Niobium; Tantalum; Titanium; Tungsten; The dielectric; Indium tin oxide; Lead zirconate titanate (PZT); Silicon carbide. Plastics/polymers; Polytetrafluoroethylene (PTFE); Polyformaldehyde (POM); Polybenzimidazole (PBI); Polyether ether ketone (PEEK); Polyimide (polyimide); Polyamide (nylon); Perfluoroalkoxy alkane (PFA); Polyfluorinated ethylene propylene (FEP); Polyolefin; Polyester, etc.

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Carbon film of plasma cleaner to remove the carbon film of aspheric mirror of tungsten carbide on the surface of DLC

Carbon film of plasma cleaner to remove the carbon film of aspheric mirror of tungsten carbide on the surface of DLC

Plasma cleaners are widely used in precision electronics, semiconductor packaging, automotive manufacturing, biological medical, photoelectric manufacturing, new energy, textile printing and dyeing, packaging containers, household appliances and other industries, such as cleaning activation modification. This paper mainly discusses the application of the plasma cleaner in removing the WC aspheric carbon film on the surface of DLC, and introduces the treatment effect of the plasma cleaner in removing the WC aspheric carbon film on the surface of DLC. After the treatment by the etc ion cleaner, the removal effect of the DLC film on the aspheric mirror surface is very good, and the residue such as dirt and impurity film on the surface will be removed. Small plasma cleaning machine is developed for universities and scientific research units. Research institutions and corporate laboratories, or innovative experimental platforms developed by innovative, small-scale production enterprises. The company has a wealth of customer use information, application needs analysis, design and manufacturing experience for many years. Small, multifunctional plasma surface treatment device regardless of design concept, accessories selection, have invested a lot of energy. According to the different requirements of customers, we provide the corresponding accessories, with surface coating (coating), etching, plasma chemical treatment, powder plasma treatment and other functions, at the same time to achieve the conventional performance.

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Application of surface modification of low temperature plasma metal biomaterials

Application of surface modification of low temperature plasma metal biomaterials

The application of low temperature plasma to the surface modification of metal biomaterials can be divided into three categories: improving biocompatibility, immobilizing bioactive macromolecules and improving the physical corrosion resistance of metals. 1. Improve biocompatibility: When metal materials are implanted into living organisms, biocompatibility requirements must be met. Biocompatibility refers to the degree to which a material is compatible with blood and tissue. Graft polymerization of hydrophilic functional groups on the surface of metal biomaterials to improve the surface properties of metal biomaterials is an important surface modification method, which is mainly used to improve the biocompatibility of materials and the growth induction of living cells, so as to make them have better biological activity. 2. Grafting Inorganic Matter on Metal Matrix: Calcium and phosphorus are the basic components of bone tissue. A layer of CA-P or HA on the surface of metal implants can effectively improve their compatibility with bone tissue and inducement to osteogenesis. It can be modified by plasma spraying (PSC). The high potential difference between electrodes is used to generate an arc discharge (>10000℃), which ionizes the gas around the electrodes into plasma, and then impacts the suspended surface modification powder at high speed to make it settle on the metal surface. Plasma spraying is a widely used deposition method at present. It can provide high adhesion between the substrate and the surface modification layer, and can obtain a complete coating (4O ~ 54M). Coatings formed by this process can rapidly nucleate and grow in body fluids. However, as a high temperature process, it has some disadvantages such as uneven density, inconsistent structure, large variation range of binding strength and so on. Moreover, the decomposition of hydroxyapatite in the spraying process may lead to the desolvation phenomenon in the environment of body fluids. In order to improve the composition and structure of HA coating, another heat treatment or steam bath is needed after spraying. Such as spraying the products in the vapor pressure of the o. 15 mpa, temperature of 125 ℃ steam environment for 6 h steam bath, can make the most of the amorphous phase into HA crystalline state, and coating produced by other breakdown products will resume as crystalline HA phase, which greatly improved the stability of the coating of the amorphous hydroxyapatite coating has good stability, but relative to the functional hydroxyapatite coating, due to the improvement of the surface density. It also detracts from its osteogenic induction. Therefore, in the actual preparation process should be selected according to the specific requirements of the use of the material, the selection of suitable technological conditions. At present, many domestic units are using plasma surface modification technology to actively carry out the research on the surface modification and surface film synthesis of biomedical materials, in order to solve the key technical problems such as anticoagulant, biocompatibility, polymer surface hydrophilicity, anti-calcification, and cell adsorption growth and inhibition. Shanghai Institute of Ceramics, Chinese Academy of Sciences uses plasma spraying technology. Significant progress has been made in the improvement of artificial bone by ZrO2 coating on material surface.

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Research Status of Surface Modification of Metal Biomaterials by Low Temperature Plasma

Research Status of Surface Modification of Metal Biomaterials by Low Temperature Plasma

With the development of basic industries and high-tech products, the demand for high quality and efficient surface modification and coating technology has been extended in depth. Under the mutual promotion of this field and related disciplines, breakthroughs have been made in surface modification of metal biomaterials and coating process simulation and performance prediction. As an important part of the development of new metal biomaterials, surface modification and coating technology have penetrated into the traditional industry and high-tech industry sectors, and in turn promoted the further development of surface functional coating technology according to the application requirements. It has become an important research direction of low-temperature plasma surface modification technology to design the material surface, cut the surface performance parameters to meet the specific requirements, and further realize the prediction of the structure and properties of the surface coating. Various plasma vapor deposition is the world famous research institutes and universities to carry out a challenging research topic, overseas has the plasma chemical vapor deposition (PCVD), and other surface modification method was carried out by computer simulation, in view of the PCVD process was simulated, the macroscopic and microscopic multi-level model, the plasma technology and coating of various properties and simulate and predict the adhesion strength of the matrix; Computer simulation of the performance stress of the permeable layer on the metal surface can better control and optimize the process. In the future according to the development of the plasma surface modification technology at home and abroad, combined with the demand and status quo of biomedical engineering, in a batch of advanced applied during the development of metal material surface function cladding, key technologies, including new type of low temperature plasma vapor deposition technology and equipment, surface coating technology and the quality of the research and development of the numerical simulation and optimization control and so on. To sum up, low-temperature plasma technology is doing a lot of research on surface modification and surface film synthesis of metal biomaterials due to its unique advantages, but most of these studies are still in the development stage or test stage. With the further study of plasma theory and the solution of technological problems, the surface modification technology of low-temperature plasma will certainly improve the biological properties of metal materials, reduce toxic and side effects, and play a positive role in medical application.

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What is the hazardous safety distance of plasma surface processor equipment

What is the hazardous safety distance of plasma surface processor equipment

Glow plasma produced by plasma surface processor equipment, can be dealt with effectively remove the original material surface contaminants and impurities, and produce etching effect, make the surface rough, forming many small pits, increase the contact area and improve the surface wettability (as the saying goes, improve the adhesion of surface, increase the hydrophilic). Plasma surface processor equipment has a wide range of applications, it can solve the bonding, printing, spraying, electrostatic and other technical problems, to achieve the pursuit of modern manufacturing process of high quality, high reliability, high efficiency, low cost, environmental protection and other goals. Many factory operators, when using plasma surface processor equipment, always want to consult the manufacturer, plasma surface processor equipment dangerous safety distance is what?   Plasma surface processor devices produce trace amounts of ozone when they are turned on. Ozone is basically no harm to the human body, but also can effectively decompose harmful bacteria in the air, sterilization. But if the use of the environment is relatively closed, ventilation conditions are poor, it will be too high, so that people around smell irritant odor, produce a mild feeling of dizziness and headache. Therefore, the plasma machine production workshop needs to keep unblocked with the outside air. If the use space is relatively closed and the ventilation condition is poor, a special exhaust system needs to be installed.   Plasma surface processor devices produce a glow that burns the human body when in close contact. So when plasma beams process materials, they cannot be touched by hand. In general, the distance between the direct-injection plasma surface processor and the nozzle is 50mm, and the distance between the rotating plasma surface processor and the nozzle is 30mm (the distance is different for different types of equipment). In order to ensure the safe operation of the equipment, please use AC220V/380V power supply, and do a good job of grounding, to ensure that the air supply is dry and clean.

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