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Sirris 2016 04-12 towards succesfull coating application-sirris

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Succesfull coatings @ the Sirris Smart Coating Application Lab - definition of coatings, applications, processes

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Sirris 2016 04-12 towards succesfull coating application-sirris

  1. 1. Roadshow Smart Coating Application Lab 14/04/2016 1© sirris | www.sirris.be | info@sirris.be |
  2. 2. 14/04/2016 2© sirris | www.sirris.be | info@sirris.be |
  3. 3. Towards successful coating application Daan Dewulf Project Engineer Coatings Daan.Dewulf@sirris.be 14/04/2016 3© sirris | www.sirris.be | info@sirris.be |
  4. 4. Not very succesful… 14/04/2016 4© sirris | www.sirris.be | info@sirris.be |
  5. 5. Applying coatings succesfully : not as easy as it sounds… 14/04/2016 5  What are the expectations?  Functionality  Indoor/outdoor exposure  … © sirris | www.sirris.be | info@sirris.be |  Even more so: limitations?  Plastic, metal, wood, mineral,…  Surface/workpiece  Temperature resistance?  Applications technology?  Curing conditions?  …
  6. 6. How to apply coatings - Flowchart 14/04/2016© sirris | www.sirris.be | info@sirris.be | 6 PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING
  7. 7. How to apply coatings - Flowchart 14/04/2016© sirris | www.sirris.be | info@sirris.be | 7 PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING
  8. 8. Cleaning and pretreatment 14/04/2016 Cleaning & pretreatment leads to activation of the substrate  Increase wettability  Increase adhesion © sirris | www.sirris.be | info@sirris.be | 8 PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING No plasma
  9. 9. 14/04/2016 9© sirris | www.sirris.be | info@sirris.be | Removal of surface contaminants  Dust, oils, rust  Physical/Mechanical  Sand blasting  wiping  Ionized air  Anti-static  Chemical  Degreasing  Solvent ultra sonic PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING Cleaning
  10. 10. Pretreatment 14/04/2016© sirris | www.sirris.be | info@sirris.be | 10 PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING Treatment of surface  Chemical  Priming  Etching  Physical  Flame/oxidative gas  Corona/glow discharge  Plasma
  11. 11. Pretreatment 14/04/2016 Flame treatment Surface oxidation leads to increase in polarity Continuous Simple Effective Thermal stress on components Not really suited for heat sensitive surfaces Very short-term effect © sirris | www.sirris.be | info@sirris.be | 11 PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING
  12. 12. Pretreatment 14/04/2016 Corona treatment AC voltage electrode in stead of a flame Oxidizes the surface by high energy oxygen ions Adding and deleting electrons (+,- sites) Continuous No thermal stress Limited reach Plane surfaces and films (1D-2D) Short-term effect © sirris | www.sirris.be | info@sirris.be | 12 PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING
  13. 13. Pretreatment 14/04/2016 Plasma treatment Like corona, plasma is the electrical ionization of a gas Plasma discharge creates a smooth undifferentiated cloud of ionized gas with no visible electrical filaments More effective than corona Effect can last several weeks Suitable for difficult to activate substrates (3D) smaller area of activation © sirris | www.sirris.be | info@sirris.be | 13 PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING
  14. 14. Pretreatment @ Smart Coating Lab 14/04/2016© sirris | www.sirris.be | info@sirris.be | 14 PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING
  15. 15. Pretreatment 14/04/2016© sirris | www.sirris.be | info@sirris.be | 15 PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING
  16. 16. How to apply coatings - Flowchart 14/04/2016© sirris | www.sirris.be | info@sirris.be | 17 PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING
  17. 17. Coating application 14/04/2016 18© sirris | www.sirris.be | info@sirris.be | PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING Coating is sprayed (atomized) (1D-2D-3D) Coating not sprayed (1D-2D) Pneumatic high pressure Brush, roll, wipe Pneumatic low pressure (HVLP) Dipping Hydraulic (pressure feed, HVLP) Flowing Rotation (bel) Bar coating/Meyer bar Electrostatically assisted Electrodeposition
  18. 18. Dipcoating Flow coating Bar coating/ Meyer bar 1D-2D coating application 14/04/2016 19© sirris | www.sirris.be | info@sirris.be | PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING
  19. 19. Pneumatic low pressure/HVLP Hydraulic pressure feed/HVLP Manual 1D-2D-3D Application 14/04/2016 20© sirris | www.sirris.be | info@sirris.be | PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING
  20. 20. Programming knowledge Higher investment cost Profound knowledge of different parameters Automated 1D-2D-3D application 14/04/2016 21© sirris | www.sirris.be | info@sirris.be | PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING High flexibility Reliability Reproducibility Parameter optimization Parameters  Nozzle diameter  Coating viscosity  Air pressure Influences on  Overspray  Surface quality  Coating speed
  21. 21. Automated application 14/04/2016 22© sirris | www.sirris.be | info@sirris.be | PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING Programming tool: Simplified Robot Programming (SRP)
  22. 22. How to apply coatings - Flowchart 14/04/2016© sirris | www.sirris.be | info@sirris.be | 23 PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING
  23. 23. Drying and curing/hardening 14/04/2016 24  Drying  Elimination of solvents  Densification  Reactions  Condensation  Polymerization  Oxidation/reduction  Chemical modification  2K systems © sirris | www.sirris.be | info@sirris.be | PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING
  24. 24. Drying and curing 14/04/2016 25  Thermal curing  Hot (circulating) air  IR curing  Radiation curing  UV curing  UV-LED curing  (Electron beam)  (Microwave)  (laser) © sirris | www.sirris.be | info@sirris.be | PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING
  25. 25. Drying and curing @ Smart Coating Lab 14/04/2016 26© sirris | www.sirris.be | info@sirris.be | PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING
  26. 26. 14/04/2016 27© sirris | www.sirris.be | info@sirris.be | PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANINGDrying and curing @ Smart Coating Lab
  27. 27. Drying and curing 14/04/2016 28 IR drying © sirris | www.sirris.be | info@sirris.be | PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING
  28. 28. Drying and curing 14/04/2016 29 UV curing © sirris | www.sirris.be | info@sirris.be | PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING
  29. 29. Drying and curing 14/04/2016 30© sirris | www.sirris.be | info@sirris.be | PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING Hot air IR UV Thick/pigmented coatings ++ ++ - Coating complexity/Cost - - ++ Drying/Curing times -- + ++ Energy consumption/ Ecological footprint -- + + Maintenance cost ++ +- +- Investment cost +- +- - Throughput - + ++ Hot air IR UV Heat transfer ++ + / Installation size ++ - - Flexible technology ++ - - Line-of-sight effect/ shadowing ++ - -- Thermal stress -- + ++ Heat sensitive substrates -- + ++ VOC - - ++ Health issues + + --
  30. 30. How to apply coatings - Flowchart 14/04/2016© sirris | www.sirris.be | info@sirris.be | 31 PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING
  31. 31. Control & testing 14/04/2016 32© sirris | www.sirris.be | info@sirris.be | PRETREATMENT APPLICATION DRYING & CURING CONTROL & TESTING CLEANING  Scratch resistance  Cross-cut  UV-degradation  Abrasion resistance  Thickness ( on metal)  Gloss  Contact angle  Surface topography
  32. 32. 14/04/2016 33© sirris | www.sirris.be | info@sirris.be |
  33. 33. +32 472 38 11 60 Daan.dewulf@sirris.be Daan Dewulf – Project Engineer Smart Coatings 14/04/2016© sirris | www.sirris.be | info@sirris.be |

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