The plasma cleaning machine modifies the surface of silicone rubber through dielectric barrier discharge to improve its hydrophilicity. After modification of the plasma cleaning machine, the wettability of the surface can be measured. Plastic is one of the most essential and important materials in modern industry and daily life, due to its low cost and good performance.

When manufacturing complete products, polymer materials undergo many technical processes in the industry, including printing, bonding, or activation treatments. Unfortunately, 

the smooth and difficult to wet surface of plastics is prone to adhesive problems during these processes. Plasticizers, lubricants, and flame retardants may remain on the material surface, greatly reducing the adhesion between the product and the surface application substance. The main purpose of polymer material surface modification is to increase the adhesion between the material surface and the substances deposited on the surface. Surface modification can change the surface free energy, thereby increasing or decreasing hydrophilicity or hydrophobicity, removing impurities, improving conductivity, reducing friction coefficient, and introducing specific functional groups on the surface. All surfaces have been found to have invisible ultrafine pollutants.

Plasma technology can provide various cleaning processes to meet different requirements in different situations. Compared with other cleaning processes, plasma cleaning machines have unique advantages:

Even in the smallest cracks and crevices, it is possible to clean all component surfaces, including the interior of the hollow body, in one working step. By vacuum extraction, decomposition products can be removed without residue. Chemical cleaning agents will not cause damage to solvent sensitive surfaces

The removal of molecular fine residues is suitable for immediate further processing.

After being treated with atmospheric pressure plasma cleaning machine, the surface of silicone rubber can achieve good results in multiple aspects, as follows:

1. PP/PET and other silicone rubber materials have low surface energy and exhibit hydrophobicity. After being treated by a plasma cleaning machine, hydrophilic groups such as hydroxyl and carboxyl groups are introduced into the surface, and the micro roughness is increased, which significantly improves the hydrophilicity of the silicone rubber surface. The contact angle of water on its surface is significantly reduced, allowing for better contact and binding with water-based substances, thereby enhancing the surface hydrophilicity.

2. Untreated silicone rubber has poor surface bonding performance and is difficult to firmly bond with other materials. Plasma cleaning machine treatment can remove organic pollutants on the surface, increase surface energy and roughness, provide better surface conditions for bonding, greatly improve the bonding strength between silicone rubber and other materials such as adhesives, coatings, metals, etc., effectively improve the bonding effect, and enhance the reliability and service life of the product.

3. Due to the plasma cleaning machine treatment, the hydrophilicity and surface energy of the silicone rubber surface are improved, resulting in better wetting and adhesion of inks, coatings, etc. on its surface. During printing, ink can be more evenly distributed on the surface of silicone rubber, resulting in clearer and more secure patterns; When coating, the coating can adhere better, form a uniform and dense coating, improve the quality and protective performance of the coating, and thus improve the printing and coating effect.

4. In the biomedical field, silicone rubber is often used to manufacture various medical devices and products. After treatment with a plasma cleaning machine, the chemical composition and microstructure of the surface of silicone rubber change, improving its biocompatibility and reducing rejection reactions in the body. This is beneficial for the application of silicone rubber products in the biomedical field, thereby improving biocompatibility.

5. The plasma cleaning machine can effectively remove impurities such as release agents, oil stains, dust, etc. on the surface of silicone rubber, while activating surface atoms to make the surface in a highly active state, providing a clean and highly active surface for subsequent processing, which is conducive to various chemical reactions and physical interactions.

In summary, plasma cleaning machines can enhance surface hydrophilicity, improve product reliability, and improve surface printing and coating in the field of silicone rubber. For more details, please follow our editor.