Plasma Treating Expert Speaks at Queens University Belfast
With specialist knowledge and expertise spanning a breadth of applications, industries and substrates worked on, Chris Lines, Managing Director of Dyne Technology, the UK and Ireland’s Number One Plasma Treatment technology supplier, has become an in-demand speaker on how to solve the problems of adhesion.
Institute of Materials Finishing Ireland: 20th Anniversary Conference
Recently, Chis spoke at the 20th anniversary of Institute of Materials Finishing (IMF) Ireland which was held at Queens University, Belfast. The lecture focused on helping to answer the age old question of “How do you solve the problems of adhesion?”.
“It was an honour to be asked to speak at the IMF Ireland Anniversary Conference. The IMF has evolved from being a meeting point for metal finishing experts, to now attracting a far broader field, including those working within the polymer industry. It was a fantastic experience to share knowledge with professionals from such a diverse set of specialisms. Here’s to the next twenty years!” – Chris Lines, Managing Director, Dyne Technology
If you missed Chris’ talk, we’ve got you covered! Here are Chris’ top three takeaways from his lecture at Queens University, Belfast.
Why can achieving good adhesion be difficult?
The problem of adhesion unfortunately isn’t a simple one and it takes into account a variety of factors. Simply put, achieving good adhesion to “non-stick” plastics such as traditionally “non-stick” plastics include Polypropylene (PP), Polyethylene (PE), Polyether ether ketone (PEEK) all of which have a low surface energy of between 29 – 36 Dynes/cm² (mN/m).
These low surface energy materials mean that no matter how much cleaning or abrasion of the surface, they remain at best difficult or often impossible to paint, coat, print or bond to without appropriate surface modification.
Improving adhesion to metal, once again is dependent on a number of factors, including surface cleanliness. Surface contamination can be hugely detrimental to achieving good adhesion and we always recommend measuring your surface cleanliness, ideally using a CleanoSpector (a fluorescence measurement instrument), to determine the level of cleanliness of the metal surface.
What are the ideal surface properties for good adhesion?
It is widely accepted that the ideal surface to bond to should be Polar, Dust Free, Non-Porous, Smooth, Dry, Clean and Wettable. Having a clean, dry, dust free, smooth and non-porous surface requires little discussion, however, ensuring the surface is polar and has good “wettability” is a more complex matter. We have a blog explaining more about the ideal properties of adhesion here.
How do we improve adhesion?
Plasma Surface Activation is achieved by exposing the component undergoing treatment to a high energy Plasma discharge. The Plasma discharge is created by exposing a gas, commonly air, to a high energy discharge, the gas is then broken up into ions, electrons, free radicals and other excited particles.
The treated material’s polarity is increased as the free radicals and other active particles that exist within the highly active plasma discharge attach to the material’s surface which forms additional polar groups and improves surface wettability.
Interestingly, the excited particles within the Plasma also effectively scrub the surface of the substrate clean, removing organic contamination from the surface
Want to find out more?
If you want to find out more about Plasma Treating, get in touch with one of our in-demand experts by giving us a call on +44(0) 1543 411 460 or email us at email@example.com.