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Yangzhou Guoxing Technology is a well-known company in the domestic plasma industry. All senior executives of the company have rich experience in the circuit board industry. Welcome everyone to our company to learn from each other.

When it comes to the plasma industry, we must first understand what plasma is:
When the temperature continues to rise, the molecular thermal motion of the gaseous matter continues to intensify, and the collisions between them will become more and more intense. The electrons in some atoms will be stripped and no longer bound to the nucleus, but become high-potential and high-kinetic energy. Free electrons, which we call gaseous matter, produce ionization. Since positive ions and electrons always appear in the process of ionization of gaseous substances, the total number of positive charges carried by positive ions and negative charges carried by electrons in ionized gaseous substances is roughly equal. Therefore, from a general perspective, this The ionized gaseous matter is quasi-electrically neutral. We call this state of existence of gaseous matter as plasma (plasma). Plasma is the fourth of matter in addition to the common three states of solid, liquid and gas. state.

Next, I will explain the four major functions and characteristics of plasma surface treatment:

Purification effect of plasma surface treatment: It can effectively remove organic pollutants and oxides on the surface of objects. Main features: Any wet cleaning method will leave residues on the surface. Only low-temperature plasma surface treatment can achieve a thorough purification and obtain an ultra-high clean surface. The low-temperature plasma only affects the surface of the material at the nanometer level. It will change the original characteristics of the material, and it is being widely used instead of wet treatment in processes that require high surface cleanliness. Treatment mechanism: It mainly relies on the "activation" of the active particles in the plasma to achieve the purpose of removing stains on the surface of the object. The gas is excited into a plasma state; heavy particles hit the solid surface; electrons and active groups react with the solid surface to resolve into a new gas phase substance and leave the surface. The biggest feature of plasma cleaning technology is that regardless of the type of substrate to be processed, it can be processed. It can treat metals, semiconductors, oxides and most polymer materials, such as polypropylene, polyester, polyimide, and polychloride. Ethane, epoxy, and even polytetrafluoroethylene can be handled well, and can be used to clean the whole, part, and complex structures.

Plasma surface treatment activation: After low-temperature plasma treatment, three groups of C=O carbonyl (Carbonyl), -COOH carboxyl (Carboxyl) and -OH hydroxyl (Hydroxyl) are formed on the surface of the object. These groups have a stable hydrophilic function and have a positive effect on bonding and coating. Main features: It can make some active atoms, free radicals and unsaturated bonds appear on the polymer surface. These active groups react with active particles in the plasma to form new active groups, thereby increasing surface energy and changing the chemical properties of the surface , To enhance surface adhesion, adhesion, tension, including the treatment of rubber, composite materials, glass, cloth, metal, etc., involving all walks of life.

The roughening and etching effect of plasma surface treatment: Corresponding to different materials, use the corresponding gas combination to form a strong etching gas-phase plasma and chemical reaction and physical impact with the body of the material surface, so that the solid matter on the surface of the material body is vaporized to generate gases such as CO, CO2, H2O, etc. , So as to achieve the purpose of micro-etching. Main features: uniform etching without changing the characteristics of the material matrix; it can effectively roughen the surface of the material and accurately control the amount of microetching.

Plasma surface treatment coating (deposition, grafting) function: The plasma treatment process can also be applied to the micro-coating of materials. Two corresponding different gases are selected to enter the plasma reaction chamber at the same time. The two gases are excited and re-polymerized in the plasma environment, which will produce new compounds and deposit on the surface of the material to form a new coating. Plasma treatment is used With this special effect, materials that are not easy to coat can be applied to the surface of objects, such as anti-blood coagulation coatings for heart stents and artificial blood vessels, scratch-resistant surfaces and hydrophobic coatings for materials, etc. Main features: The molecular chain on the surface of the material can be broken to produce new free radicals, double bonds and other active groups, followed by cross-linking, grafting and other reactions. The active gas will polymerize on the surface of the material to produce a layer of deposition to reach the material. The purpose of surface modification.

Elites from all industries are welcome to come to our company to discuss the related knowledge of plasma equipment. This article explains the four points of action and characteristics of plasma for everyone, and I hope it will be helpful to everyone. Yangzhou Guoxing Technology will be committed to providing customers with plasma etching and surface cleaning equipment.