Rubber plug is a high-performance sealing material mainly used for sealing under high temperature, high pressure, strong corrosion, and high purity conditions. Therefore, how to improve the sealing performance and durability of the surface of plasma cleaned rubber plugs is an important issue.
1、 Material selection for plasma cleaning rubber plugs
The material selection of rubber plugs directly affects their sealing performance and durability. At present, commonly used materials for plasma cleaning rubber plugs include polytetrafluoroethylene (PTFE), polyimide (PI), polyisocyanate (PU), etc.
2、 How to treat rubber plugs with plasma cleaning
By treating rubber plugs with plasma generated by plasma cleaning equipment, surface properties can be improved, while removing dirt, oxide layers, and other impurities from the material surface, and improving its surface energy and adhesion. The surface of the material after plasma treatment has better wear resistance, corrosion resistance, and high temperature resistance, and its surface energy has also been improved, thereby enhancing the sealing performance.
Plasma surface cleaning technology is the use of a charge pump to control plasma energy under the action of low-pressure and high-frequency pulsed plasma, generating a large amount of active free radicals that instantly decompose pollutants on the surface of objects into gases (H+) and atoms (H), and combine them into small molecule compounds. On this basis, the plasma active group also contains a large amount of ozone ions, which can cause the pollutants on its surface to be decomposed by secondary oxidation, thereby achieving the goal of thoroughly cleaning the surface of the object.
In addition, plasma groups have high energy, which can change the molecular structure of the rubber sealing strip surface, improve surface adhesion, and facilitate the tight fit between the sealing strip and the vehicle body, thereby improving sealing performance.
Compared to other physical and chemical surface cleaning processes, plasma surface cleaning technology has the characteristics of low cost, high efficiency, and strong environmental friendliness. Its process flow is simpler and only requires high-frequency discharge for effective cleaning operations. Meanwhile, a lower temperature can prevent damage to the product surface due to excessive temperature.
