What are the reasons for the timeliness and treatment effect decline after plasma cleaning machine treatment? Professionals and experienced people know that in practical applications, the effect of plasma treatment on material modification is not lasting. As time goes by, part of the treatment effect will gradually lose. This phenomenon is called the timeliness of plasma treatment. Or aging. The mechanism of the timeliness of plasma treatment is very complex, mainly caused by the dynamic reorganization of the surface of the material. 1. After plasma treatment, active groups are introduced into the surface of the material to increase the surface energy of the material, but this state is not stable. In order to reduce the surface free energy, the molecular chain will freely rotate or migrate freely, so that the active groups will gradually turn to adjacent molecules or groups, or even inside the material, so that the system tends to stabilize and the surface activity is reduced; 2. Long-term storage makes the active surface adsorb various impurities and cause the surface energy to decrease; 3. The material contains one or more polymers and a variety of small molecule additives, such as low antioxidants, plasticizers, antistatic agents, lubricants, colorants, pigments and stabilizers, etc., with the prolonged storage time Or increase in temperature leads to increased mobility of molecular chains. On the one hand, surface active bonds are moved away from the surface or quickly recombined. On the other hand, some additives will migrate from the inside of the material to the surface. The higher the temperature, the greater the mobility, which affects the surface of the material. can. The longer the storage time, the higher the storage temperature, or the higher the content of certain additives (such as slip agents), the greater the change in its surface energy; 4. The surface is subjected to external forces (such as friction) to cause part of the surface molecules to fall off or recombine, and the surface roughness decreases, resulting in a decrease in surface energy, and so on. In short, the timeliness of plasma processing is mainly affected by the type of processing gas, processing parameters, the chemical composition of the processed material, the crystalline structure, and the storage environment of the processed material. The above are the four points that Guoxing Technology explains to you. I hope it will be helpful to you. We specialize in making plasma cleaning machines. Whether it is vacuum plasma or atmospheric pressure plasma, we are all professionals. Welcome everyone to our company to discuss business. Grow and progress together.