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Introduction of plasma surface treatment technology for three dimensional objects

Keywords:

treatment,the,of,surface,and,to,plasma,in,cleaning

Published on:

06 May,2021

Introduction of plasma surface treatment technology for three dimensional objects

In plasma surface treatment technology, the energy of the particles is usually around a few to a dozen electron volts, which is much larger than the bonding energy of polymer materials (a few to a dozen electron volts), which can break the chemical bonds of organic macromolecules, thus generating new bond energy; 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. Electrons in the plasma surface treatment technology in the thermodynamic equilibrium state, has the very high energy, can damage the material surface molecular bonds, and improve the particle chemical reactivity heat plasma (strong), and the temperature close to room temperature neutral particles, this for heat-sensitive provides favorable conditions of surface modification of polymers. After low temperature plasma surface treatment, the surface of the material will undergo many physical and chemical changes, or corrosion roughness phenomenon, or the formation of dense crosslinking layer, or the introduction of polar oxygen-containing groups, respectively improve the hydrophilicity, bonding, absorbability, biocompatibility and electrical properties. The surface morphology of the material can be obviously changed by using the appropriate process conditions, and the introduction of a variety of oxygen-containing groups makes the surface from non-extremely difficult to stick to a certain polarity, easy to stick and hydrophilic, which is conducive to bonding, coating and printing.

Plasma surface treatment technology

Introduction to plasma surface treatment technology

Plasma surface treatment of the material has the following effects:

1, activity: significantly improve the wetting, the formation of active surface;

2, cleaning: remove dirt and oil, fine cleaning and static electricity;

3, coating: through the surface coating treatment, provide functional surface, improve the surface adhesion ability, improve the reliability and durability of surface adhesion.

The surface energy of all kinds of polymer plastics, ceramics, glass, PVC, paper and metal can be obtained by constant pressure plasma treatment. Adopts this kind of treatment technology, can improve the product surface tension performance, accords with the industry respect to the coating, the adhesive and so on treatment request.

Such as:

1, liquid crystal display coating processing, casing and buttons and other junction surface of the oil injection screen printing, PCB surface in addition to the glue cleaning, cleaning before film paste, wire, cable before the processing of code injection and so on.

2. The processing of lampshade, brake pad and door seal tape before pasting in the auto industry;

3, in the mechanical industry, the metal parts for the small, harmless cleaning treatment, lens coating treatment, a variety of industrial materials between the connection and sealing before the treatment.

4, in the printing packaging pasting box machinery, the edge of the sealing position of the pre-gluing treatment.

5, in the medical device industry, before the needle and plastic catheter bonding treatment and so on.

Plasma surface treatment technology is used to modify the surface of a three-dimensional object. High-frequency AC high voltage is applied to both ends of the electrode to make the air between the two electrodes produce plasma area to produce gas arc discharge. The plasma reaches the surface of the treated object under the airflow, thus realizing the modification of the three-dimensional object surface. Ion surface treatment technology is an economical, safe and thorough cleaning method. Contaminants are removed from the treated substrate surface without affecting the properties of the host material.

Plasmas are widely used in the circuit board industry, including for conformal coating before PCB cleaning and for cleaning lead frames during packaging. Compared with other surface cleaning technologies, plasma treatment has significant advantages. Widely used in metal, plastic, glass, ceramics and other materials. And this approach is environmentally friendly, plasma cleaning does not need to use dangerous chemical solvents, do not need to worry about environmental pollution problems greatly save costs.

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