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Invisible but functional - protective coatings

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Smart coating roadshow - 30 September 2016
Invisible but functional - protective coatings

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Invisible but functional - protective coatings

  1. 1. Invisible but Functional Transparent, protective coatings on plastics and metals Smart Coatings Application Lab 27/10/2016 1© sirris | www.sirris.be | info@sirris.be |
  2. 2. Outline 27/10/2016 2  Modern hybrid coatings for protection  Scratch resistant coatings for plastics  Protective coatings for metals  Case CEBO Automotive © sirris | www.sirris.be | info@sirris.be |
  3. 3. Protective functions 27/10/2016 3  Protection of the surface is one of the most required properties of a coating  We consider here protection against  Mechanical degradation (Mar, micro-abrasion)  Chemical attacks (including oxidation and corrosion)  Degradation by dirt and daily use  Invisible  Transparent  Thin coatings © sirris | www.sirris.be | info@sirris.be |
  4. 4. Possible coatings 27/10/2016 4  Common coatings (varnish): organic  Acrylate, epoxy, polyurethane  Modern coatings: hardcoats  Hybride coatings organic-inorganic nanostructure  Combine properties of both organic and inorganic materials © sirris | www.sirris.be | info@sirris.be | Property Process- ability Hardness Thermal resistance Chemical resistance Surface energy Organic high Low low low low Inorganic low High high high high
  5. 5. Hybrid coatings: chemical structures 27/10/2016 5  Mainly 3 types are used © sirris | www.sirris.be | info@sirris.be | Polysiloxane Polysilazane Sol gel Polysilixane Polysilazane Sol gel Hybride • Thermal or UV curing • Industrial coating • Thermal curing • Hard and though • Expensive • Thermal or UV curing • Functionizable
  6. 6. Hybrid coatings: application 27/10/2016 6  Wet coatings to be applied as a thin layer: 1 – 10 µm  Application by traditional techniques  Spraying  Dipping  Flow coating  Curing  Thermal or UV © sirris | www.sirris.be | info@sirris.be | Industrial flow coating line Scheme of industrial spray coating line for tiles
  7. 7. Scratch resistant, transparent on plastics 27/10/2016 7© sirris | www.sirris.be | info@sirris.be | Examples Automotive (Momentive) MCC Smart Roadster PHC587 sun roof Momentive AS4000 DaimlerChrysler GL-class Various applications using PHC587, SHC5020 and UVHC7000.
  8. 8. Scratch resistant, transparent on plastics 27/10/2016 8  Measuring scratch resistance by Taber test © sirris | www.sirris.be | info@sirris.be | Circular Taber Abraser; ASTM D4060 Abrasive wheel CS10F 500 g Load Addition of silica nanoparticles to increase scratch resistance
  9. 9. Protective coatings on metals 27/10/2016 9  Examples (Hempel – Schaepman)  Architecture  Kitchens and bathrooms  Consumer products  Technical components © sirris | www.sirris.be | info@sirris.be |
  10. 10. Protective coatings on metals 27/10/2016 10  Anti-fingerprint coating (Nano-X) © sirris | www.sirris.be | info@sirris.be |
  11. 11. Case CEBO 27/10/2016 11  CEBO Automotive (Ingelmunster) refurbishes cast aluminium parts from oldtimer cars  They use an in-house developped blasting and peening process to render the surface of the components in their original state  Question of CEBO Can we apply a protective coating to the refurbished surfaces which is invisible, but protects the surface?  High temperature resistant (no yellowing)  Mechanically strong coating  Protection against chemicals and dirt © sirris | www.sirris.be | info@sirris.be | CEBO AUTOMOTIVE
  12. 12. Case CEBO 27/10/2016 12 Sirris: selection of possible coatings and further selection by testing © sirris | www.sirris.be | info@sirris.be | CEBO AUTOMOTIVE Not coated Siloxane- PES Hybride sol gel UV sol gel Silazane thickness / 10 µm 3 µm 15 µm 0,5 µm Chemical and dirt resistance - + + + + Heat resistance + + + - + Gloss 60° 11 51 17 44 9 Pencil hardness 4H 3H 5H 5H 5H
  13. 13. Case CEBO 27/10/2016 13  Advice for CEBO  From the tests appeared the best coatings for the application of CEBO  Hybrid sol gel (thermal curing)  Silazane coating  Final coating: Hybrid sol gel  Economic  Easy to apply (brush or sponge)  Thermal curing at 100 – 130 °C © sirris | www.sirris.be | info@sirris.be | CEBO AUTOMOTIVE
  14. 14. General Conclusion 27/10/2016 14  Modern hybrid coatings are high quality coatings for the protection of plastic and metal products.  Further functionalization such as anti-fingerprint or easy-to- clean is possible  Application and curing of the coatings is analogue to other coatings. © sirris | www.sirris.be | info@sirris.be |
  15. 15. 27/10/2016© sirris | www.sirris.be | info@sirris.be | +32 498 919372 Walter.Lauwerens@sirris.be Walter Lauwerens, Senior Projects Manager
  16. 16. 27/10/2016© sirris | www.sirris.be | info@sirris.be | http://www.sirris.be #sirris http://www.linkedin.com/company/sirris http://techniline.sirris.be

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