Plasma treatment before painting and baking helmets and other materials to improve surface tension and enhance paint adhesion

The subsequent painting process can only be carried out if the effective surface treatment is completed first. Pre-treatment of workpiece surfaces with plasma technology - plasma cleaning and surface activation - can significantly improve the surface tension and the quality of subsequent paint processes.

Without cleaning contaminated surfaces to a fine degree and activating non-polar plastics, it is impossible to obtain a flawless paint surface that adheres consistently over time. Various methods are used for cleaning and activation, while the method using chemical solvents is by far the most applied, but more than 50% of volatile organic compound (VOC) emissions are caused by the use of solvents.

Surface energy is the key element to ensure wettability and adhesion. Whether a coating has the adhesion required to adhere to a substrate depends heavily on the surface energy. Good wettability is conditioned by the ultra-fine cleanliness of the material surface and by the surface energy of the solid material is higher than the surface tension of the liquid. Pretreatment processes based on chemical solvents are environmentally harmful, often harmful to health, and involve high energy and disposal costs. plasma surface treatment is an environmentally friendly material surface pre-treatment technology and is an efficient and economical pre-treatment process.

This plasma effect results in uniform surface hydrophilicity, which not only creates optimal adhesion in a matter of seconds but also ensures that the coating achieves a high-quality finish.

Plasma treatment modification principle

When an electric field is applied to a low-pressure gas, the gas molecules or atoms dissociate and become a gas containing cations and approximately the same number of anions or electrons in addition to neutral atoms, and the gas in this state is called plasma. Compared to normal gas, it is in a highly excited, high-energy state. Plasma treatment is to use this energy to introduce functional groups into the surface layer of the material, so that the affinity between the surface layer and the paint increases, thereby improving the adhesion performance of the paint film.

Plasma treatment effect

Removal of organic pollutants such as grease

Surface chemical modification to improve surface energy

Plasma surface treatment effectively improves paint adhesion, ensuring that paints and coatings adhere firmly to the surface of metals, aluminum, glass, plastics (such as polypropylene, EPDM rubber, etc.), and many other materials.