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Plasma Activation

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The activation effect of plasma can form polar functional groups such as carbonyl (-CO), carboxyl (-COOH), and hydroxyl (-OH) on the surface of materials. These functional groups have stable functions and play a positive role in adhesion and hydrophilicity. The main feature is to increase surface energy. For polymers, the low surface energy leads to poor adhesion. By plasma activation, surface energy can be increased, thereby changing the chemical properties of the surface to enhance surface adhesion and bonding strength.


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P1-8: Hydrophilic test before plasma activation

P1-9: Hydrophilic test after plasma activation.


The above are two hydrophilic test images of a plate before and after plasma activation treatment. From the images, we can see that before plasma activation treatment, the contact area between the plate surface and water droplets is relatively small, so the adhesion between the plate and water droplets is poor. After plasma activation treatment, the contact area between the plate surface and water droplets increases, indicating that the adhesion between the plate and water droplets becomes stronger. Therefore, it can be concluded that plasma activation can increase surface energy, change surface chemical properties, and enhance surface adhesion.

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