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.

The plastic surfaces collide with the plasma to produce "unexpected" effects

The plastic surfaces collide with the plasma to produce "unexpected" effects

With the continuous improvement of plastic processing and modification technology, the application field is expanding rapidly. Different application fields require more and more plastic surface decoration, material protection, improvement of adhesion and other properties, but the corresponding surface properties of various plastic materials are obviously different due to their different structures and components. Various surface treatment technologies and products adapted to different applications emerge as The Times require. Due to the characteristic low surface energy of most plastics, the adhesive property is low in nature, and many treatment methods, such as decoration, printing, spraying, etc., cannot be directly applied, and the surface treatment is required first. The adhesion of plastics to various materials is a key problem to be solved in surface treatment. Generally speaking, the bonding properties of plastics are related to the structure and composition of materials. Some plastics are nonpolar and do not stick well, including polypropylene (PP), polytetrafluoroethylene (PTFE), PEEK and POM. PP, PE and other polyolefin materials, the surface energy is very low, usually only 30 Dyne. To achieve good adhesion, the surface energy is generally required to be no less than 36 Dyne. The bonding strength of PE can be increased several times after plasma treatment. After the same treatment, the bonding strength of PP will be significantly improved after the ionizing treatment. Plasma provides an effective surface activation pretreatment for printing, painting or bonding. This is a reliable and effective way to improve the printing adhesion and bonding strength. Plasma processing is carried out in a vacuum device or space. Air is pumped out, low-pressure gases are pumped in, and energy is applied in the form of electricity. Plasma coating is one of the application fields of plasma technology. It is suitable for a wide range of applications and offers great potential for improving the function and value of materials. In a plasma coating, the entire surface of an object placed in the plasma is coated with a nano-thick polymer. This coating process takes only a few minutes. The coating is usually only a few dozen to a few hundred nanometers thick and is colorless, odorless and has no effect on the material's appearance or feel. At the same time, it's a permanent coating of material that binds at the molecular level The effects of plasma-activated surfaces can be clearly seen in subsequent production steps, including the measurement of surface contact angles: droplets form on untreated surfaces and plasma-activated surface water spreads (low contact angles).

MORE +
Atmospheric plasma cleaning machine analysis of working gas discharge principle

Atmospheric plasma cleaning machine analysis of working gas discharge principle

Atmospheric plasma cleaning machine working gas discharge is divided into DC discharge, low frequency discharge, high frequency discharge, microwave discharge and other types. Different working gas discharge principle of atmospheric plasma cleaning machine has different functions and applications. Atmospheric plasma cleaning machine usually under the action of electric field gas is broken down and conductive physical phenomenon known as gas discharge. The ionized gas thus produced is called a gas discharge plasma. Atmospheric plasma cleaning machine according to the frequency of the electric field added, gas discharge can be divided into DC discharge, low frequency discharge, high frequency discharge, microwave discharge and other types. Direct current (DC) discharge because of its simple and easy, especially for industrial atmospheric plasma cleaning machine device can apply a lot of power is still used. The range of low-frequency discharge is generally 1-100khz, and now the frequency commonly used in the device is 40kHz. At present, the most commonly used atmospheric plasma cleaning machine in experimental equipment and process equipment is the high frequency discharge device, whose frequency range is 10 ~ 100MHz. As it belongs to the Radio frequency spectrum range, it is also known as Radio frequencydischarge (RF discharge), with the commonly used frequency of 13.56mhz. When the electric field frequency of the atmospheric plasma cleaning machine exceeds 1GHz, it belongs to Microwave discharge (MW discharge). The commonly used microwave discharge frequency is 2.45GHz.

MORE +
Plasma cleaning machine to enhance the material surface adhesion and wetting

Plasma cleaning machine to enhance the material surface adhesion and wetting

How to solve the problem of poor adhesion and wettability of material surface, low cost, no waste, no pollution and good treatment effect of surface modification with plasma surface processor? Plasma surface cleaning equipment principle of work is by means of physical and chemical surface modification into plasma, plasma as the fourth state of matter, there are a lot of, a wide variety of active particles, than the usual types of active particles produced by chemical reaction is more and more active, more easy to react and the contact surface of the material, so the plasma is often used to the material surface modification. Compared with traditional methods, plasma surface modification has low cost, no waste, no pollution, excellent treatment effect, and has broad application prospects in metal, microelectronics, polymer, biological functional materials and other fields. Plasma surface modification of plasma surface cleaning machine exposes the material to non-polymeric gas plasma. The plasma bombards the material surface, causing many changes in the surface structure of the material, and the activation modification function of the material is realized. Plasma surface treatment of plasma surface modification of the functional layer is very thin (several to several hundred nanometers), will not affect the overall macroscopic properties of the material, is a lossless process. Plasma surface modification can also make use of the function of plasma polymerization or grafting polymerization to generate ultra-thin, uniform, continuous and high function without holes on the surface of the material to achieve the functions of hydrophobic, wear resistance, decoration and so on. It is an important way to develop new materials economically and effectively that the plasma of plasma surface cleaning machine can modify the surface of polymer materials to achieve high performance or high function. In the use of plasma polymer materials in the daily necessities, automobiles and electronics industries, low surface energy may lead to insufficient performance of finished products. Shenzhen Sing Fung Intelligent Manufacturing plasma treatment can improve the surface performance of polymer materials, including dyeing, wetting, printing, adhesion, anti-static, surface curing, not only improve the quality of products, but also broaden the application field of materials.

MORE +
The difference between plasma and corona treatment

The difference between plasma and corona treatment

Plasma is not treated in the same way as corona, which can only deal with very thin things, such as plastic film, which requires that the object should not be large in volume and should be used for wide area processing. The principle is to use high frequency and high voltage in the treated plastic surface corona discharge (high frequency AC voltage up to 5000-15000V/m2), thus producing a low-temperature plasma, the plastic surface to produce free radical reaction and polymer crosslinking. Surface roughness and increased wettability to polar solvents - these molecules are shocked and infiltrated into the surface of the substrate to destroy its molecular structure, thereby oxidizing and polarizing the surface molecules to be treated, and ionic shocks erode the surface, thereby increasing the adhesion of the substrate surface. I. Similarities between plasma surface treatment and electric airsickness surface treatment: 1. Plasma surface treatment and electric airsickness surface treatment are glow discharges with high frequency and high voltage. Plasma is used to treat the surface of materials. 2. Effects of plasma surface treatment and electric airsickness surface treatment: both can improve the adhesion of material surface and facilitate bonding, spraying and printing processes. 3. are all online processing, production line. Ii. Differences between plasma surface treatment and electric airsickness surface treatment: 1. In addition to glow discharge, plasma surface treatment also includes electrovolt discharge, which generates more energy and can reach adhesion of 52 Dyne above, while electric airsickness generally can only reach adhesion of 32-36 Dyne. 2. corona function processing large width, suitable for adhesion is not very high material, such as cloth, film, plastic film and other things. Plasma treatment is suitable for high adhesion, good durability and low temperature. A linear plasma cleaner (as shown below) can be used for processing up to 120mm-2000mm in width, and larger processing systems can be customized. Therefore, plasma cleaning can also meet the processing of large materials, but the budget is higher than electric airsickness, can be selected according to the needs.

MORE +
Design and characteristics of miniature low temperature plasma spark discharge device

Design and characteristics of miniature low temperature plasma spark discharge device

Because of its high chemical activity and limited thermal damage, atmospheric pressure cryogenic plasma is a promising tool for biomedical applications, including coagulation, bacterial inactivation, sterilization and cancer treatment. It is important to develop portable plasma sources that are accessible to the human body and suitable for outdoor and home operation. In this work, a portable rechargeable low-temperature plasma spark discharge device (130 mm×80 mm×35 mm, 300 g) was designed. Optimize discharge frequency and plume length by selecting resistance, capacitance, electrode gap, and ground electrode aperture. Results show that the spark plasma plume in 0.33 the length of the capacitance of 12 mm and 10 hz frequency of u F, resistance to 1 m Ω, electrode gap of 2 mm, grounding electrode diameter is 1.5 mm. Biological tests have shown that the plasma produced by the device is rich in active substances that can be used in plasma biomedicine, including routine disinfection and wound healing.

MORE +
Plasma cleaning technology research

Plasma cleaning technology research

Plasma cleaning operation time, optimize organization parameters and adjust the operation mode of transmission organization, thus improving Plasma organization operation efficiency and reducing cleaning cost. During the production of TFT-LCD module, the main purpose of the pressing zone cleaning is to remove the remaining solid particles and organic substances on the surface of the glass substrate. Solid particles can be removed by brush cleaning and dust-free cloth cleaning, but organic materials require Plasma cleaning. Due to the requirements of the front-end process, there are many organic compounds in the production process, the main common liquid crystal in the liquid crystal irrigation process, UV glue, etc. If these organics cannot be effectively removed, there will be pressing foreign matter, IC pressing migration and other adverse phenomena, resulting in line defects and no picture problems. 1. Plasma cleaning principle Plasma, also known as Plasma, is the product of ultraviolet fluorescence. Plasma is the fourth state of matter after solid, liquid and gas. A plasma is a gas of positively and negatively charged particles containing neutral gas atoms, molecules and free radicals. Organics are mainly compounds composed of C and O elements. Plasma USES electrode discharge to clean organics, which is mainly aimed at some inert materials with weak activity. This type of material is not easy to be activated by acid or alkali. For the small impurities remaining after cleaning, the kinetic energy generated by the high-speed impact of medium gas molecules can be used to achieve the purpose of removal. After cleaning, the use of water droplets on the surface infiltration to form a droplet Angle, is a good method to detect the surface activity of materials. The surface of the activated material is mainly for the cleaning of hydrocarbons, so the kind of compounds are oleophilic, so the Angle of the water drop Angle test will be larger (70° ~ 100 °); After plasma treatment, ions or active radicals in the plasma react easily with hydrocarbons to generate volatile hydrocarbon synthesis, such as CO, CO2, CH4, CHxOy, etc., so the Angle of water droplets after plasma will be small (10° ~ 30 °). 2. Study on Plasma cleaning technology In the Plasma cleaning process, as the electrode works under the electric field, the arc root of the electrode front end is consumed seriously. As the cleaning effect directly affects the pressing effect and the electrode cost is high, it is necessary to formulate the electrode replacement cycle. In addition, the Plasma cleaning time is 12.9s, so it is necessary to optimize the running time of the organization and improve production efficiency. 3, conclusion CRF-plasma studies the service life of the electrode, and tests the Plasma cleaning effect by measuring the droplet Angle, and concludes that the service life of the electrode is 1440h. The time in the Plasma cleaning process is optimized to reduce the time of the Plasma cleaning unit from 12.9s to 8.6s by reducing the waiting time and modifying the transmission mode. Through the study of Plasma cleaning process, it provides a method to solve the parameter setting, improves the utilization rate of equipment and saves the operating cost, which has practical reference significance for reducing the cost and improving the efficiency of key equipment in production.

MORE +
< 1...456...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