Plasma Polymerization

Plasma coating is the process of coating materials’ surfaces by plasma polymerization via low-pressure plasma treatment. To achieve this, specific monomers polymerize under the influence of low-pressure plasma and are then adhered onto the material’s surface. The polymer layers are ultra-thin, in the range of tens for nanometers to one micrometer and up. After the plasma-treatment these layers are firmly bonded with the original material’s surface. With this technology, for example, CDs are made scratchproof or textiles, normally hydrophilic, are made waterproof, i.e. the surface has hydrophobic properties.

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Plasma Coating Solutions by Thierry Plasma

Thierry Plasma creates and delivers solutions for plasma coatings for everyone’s specific needs. The developmental part is time-consuming, but there are already established coating types which may meet your needs as well. Adhering hydrophobic layers with monomers like hexamethyldisiloxane is a very well-established solution. Also PTFE-like coating or equipping surfaces with hydrophilization (using vinylacetate) are well-known and comprehensively functioning plasma coating solutions.

How it works

There are two ways to create new surface properties. Physical vapor deposition (PVD) is a purely physical process in which vaporized material is deposited on a surface by condensation using plasma bombardement. Whereas when performed as PECVD (plasma enhanced chemical vapor deposition), the monomer is introduced into a plasma chamber to be adhered to a materials surface, that was heated up to high temperatures prior to the plasma coating process.

Materials

The choice of materials to be plasma coated is versatile and can be textiles, plastics, metals, glass or ceramics whose surface functionality and properties can be modified. From all those materials, plastic is the most uncomplicated one when it comes to plasma coating. The application possibilities are versatile. Next to the already mentioned scratch-resistance of i.e. CDs or DVDs, PTFE-like coatings enhance the treated areas smoothness. It is also possible to target specific functional groups to be adhered to surface areas, which plays a role e.g. in bio analytical applications. Porous plastic materials receive a barrier coat via low-pressure plasma treatment that hinders diffusion, which is for example necessary for fuel tanks.

Treating metals leads to enabling desired effects like creating an activation that lasts several weeks. Coating metals via plasma treatment is a functional as well as decorative modification.

Some examples of application

There are many areas where the modification of a materials surface can make a lot of sense. In the textile industry for example cotton fibres are coated to give them hydrophobic, i.e. water-repellent and dirt-repellent, properties. Especially in the sector of smart textiles this treatment is indispensable.

In biotechnology plasma coating enables glass to become biochips on which molecules, e.g. proteins, are bound chemically. Plain bearings are coated with extremely hard and smooth diamond-like carbon layers and therefore work smoothly without any additional lubricant thanks to plasma coating technologies. There are more fields of application for plasma coating.

Top supplier of customizable plasma systems

Thierry Corporation North America is subdivided into two divisions, Color & Mastering and Plasma Science & Technology, and is distribution partner of the high-quality and highly functioning products of Diener Electronics. A big range of plasma systems can be customized according to each customer’s needs by Thierry Plasma and therefore are found in many industry branches from automobile to life science. Get in contact with us and get the optimal solution for any plasma coating or plasma related project idea.

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