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Invisible but functional - water resistent coatings

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Smart coating roadshow - 30 September 2016
Invisible but functional - water resistent coatings

Publié dans : Technologie
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Invisible but functional - water resistent coatings

  1. 1. Invisible but Functional Protective water-resistant nanocoatings Smart Coating Application Lab 27/10/2016 1© sirris | www.sirris.be | info@sirris.be |
  2. 2. Effect of water 27/10/2016 2 © sirris | www.sirris.be | info@sirris.be |
  3. 3. Water-resistant or Water-proof? 27/10/2016 3  Waterproof: impervious to water  Water-resistant: able to resist the penetration of water to some degree but not entirely  Water-repellent: not easily penetrated by water No clear definition of water-resistance. Electronics: IP rating (2 digit number) © sirris | www.sirris.be | info@sirris.be |
  4. 4. Water-resistant or water proof? 27/10/2016 4 © sirris | www.sirris.be | info@sirris.be | www.liquiproof.co.uk/ www.techsnapr.com www.ultimateears.com
  5. 5. Choice of coating? 27/10/2016 5© sirris | www.sirris.be | info@sirris.be | Application Durability Type of material Degree of protection Appearance Cost
  6. 6. State-of-art 27/10/2016 6© sirris | www.sirris.be | info@sirris.be | Conventional application Plasma deposited Spray, brush, roller Plasma Wet proces Dry vacuum proces (gas) Nanometer to micrometer (mostly invisible) 1 – 100 nm (Invisible) Batch process or inline Building materials, glass, metals Electronics, textile, medical
  7. 7. Conventional coatings 27/10/2016 7 • Water repellent • Low surface free energy (PTFE, silicon) • Non polar groups • Coatings based on nanotechnology => nano coatings  Silicon chemistry  (Hybrid) Sol-gel nano composites © sirris | www.sirris.be | info@sirris.be |
  8. 8. Nano technology 27/10/2016 8© sirris | www.sirris.be | info@sirris.be | Hydrophobic impregnations Hybrid (sol-gel) composites Super hydrophobic coatings Impregnations Inorganic - organic Lotus effect
  9. 9. Hydrophobic impregnations • Silicone chemistry • Often blends with fluorinated polymers • Variations in formulation on different materials • Porous surfaces 27/10/2016 9© sirris | www.sirris.be | info@sirris.be | Source: sika.com
  10. 10. Hybrid nano composites • Hybrid = combination of organic and inorganic • A lot of possibilities in functionalities • Water resistant –> easy-to-clean 27/10/2016 10© sirris | www.sirris.be | info@sirris.be |
  11. 11. Super hydrophobic coatings 27/10/2016 11 • Combination of hydrophobic groups and surface roughness, similar to lotus leaf. • Very high water contact angle => High water repellency Challenges: Often visible, lack durability Suppliers: Never wet, ultra ever dry, hydrobead, Pee Back © sirris | www.sirris.be | info@sirris.be |
  12. 12. Plasma deposited coatings 27/10/2016 12 • (Pulsed) plasma • Dry process • Gas phase – deep penetration – - thin coatings (filters) • No additional curing step • Used frequently in electronics, textile treatment and medical © sirris | www.sirris.be | info@sirris.be | www.plasmatreatment.co.uk
  13. 13. Industry standard testing 27/10/2016 13 Humidity testing Immersion testing Water protection (IPX standard) Water penetration test (Karsten Tube) Water vapor Transmission rate Chemical resistance Corrosion resistance Salt fog testing © sirris | www.sirris.be | info@sirris.be |
  14. 14. Case Nanex Company 27/10/2016 14 • 3 product lines: different technologies and market focus.  Always dry: water repellent coatings  Cleaners: nano protective cleaners  Car coating Nanex is working together with Sirris to improve their formulations. © sirris | www.sirris.be | info@sirris.be |
  15. 15. Case: Coating development 27/10/2016 15 Main goal: To improve water-repellent products. • Focus on improving the durability • Introduction of new functionalities • Combination of technologies  Introduction of nano-particles  Proper evaluation by correct testing © sirris | www.sirris.be | info@sirris.be |
  16. 16. Overview & Conclusions 27/10/2016 16 • Many suppliers of protective water-resistent coatings • Amount of protection is related to many factors • Miscommunication exists on water-repellancy • Durability is an issue (wear, UV protection) • Major interest in water-protective coatings & technologies. => Future developments! © sirris | www.sirris.be | info@sirris.be |
  17. 17. 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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