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Plasma Technology: Environmentally Friendly Innovation for Aircraft Industry

This text discusses plasma parameters, plasma system, and various treatments in the context of aircraft industry materials. It also explores the applications of plasma technology, such as surface activation, etching, and polymerization, for better adhesion and surface properties. Additionally, it highlights the use of plasma for textile activation and aircraft window coating developments.

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Plasma Technology: Environmentally Friendly Innovation for Aircraft Industry

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  1. FAA Materials Meeting (Zürich) 12-13 July 2004 Plasma Technology: An Environmentally Friendly Innovation for Aircraft Industry FAA Materials Meeting (Zürich)

  2. PLASMA PARAMETERS: • Primary parameters: • Gas type • Residence time • Secondary parameters: • Gas flow • Frequency • Power • Pressure • PLASMA SYSTEM: • Vacuum chamber • Vacuum pumps • Gas distribution • RF-generator • Process controller • Loading principle • TREATMENTS: • Cleaning • Activation • Etching • Polymerization Low pressure: 5.10-2 - 1mbar Ambient temperature: 30 - 40 °C Gasses: O2,N2,Ar,He,CxFy,H2,CH4,… Liquid monomers: HMDSO,… Frequency’s: KHz, MHz, GHz • WHAT IS PLASMA? • 4the state • Ionized gas, highly reactive • Visible glow discharge FAA Materials Meeting (Zürich)

  3. Plasma for activation of: • Polymers (thermoplasts, duroplasts and elastomers) • Textiles (synthetic and natural fibers) • Foils • To create: • Polar groups on the surfaces To obtain: • Better Adhesion OH O COOH c c c c c c c c PLASMA O2 c c c c c c c c NH NH2 NO2 c c c c c c c c PLASMA N2 c c c c c c c c • Applications: • Printing and painting • Gluing and flocking • Biomedical cell growth • Biocompatible coatings • Soldering and bonding • Laminate and Composite production FAA Materials Meeting (Zürich)

  4. To remove: • Parts of the material • Whole layers To obtain: • Better Adhesion • Roughening of the surface Plasma for etching of: • Polymers (thermoplasts, duroplasts and elastomers) • Textiles (synthetic and natural fibres) • Foils c c c c c c c c c c c c c c c c c c c c c c PLASMA c c c c c c c c c c c c c c c c c c c c c c c c PLASMA c c c c c c c c • Applications: • Back etch of PCB • Desmear of PCB, including PTFE • Cleaning of laser vias (blind holes) • Photo resist stripping • Suitable for hybrid materials FAA Materials Meeting (Zürich)

  5. To produce layers with: • Polymer like properties • Pin-hole free dense properties • Thickness in nm range • Highly cross linked properties • Custom designed surface properties Plasma for polymerisation of: • Polymers (thermoplasts, duroplasts and elastomers) • Textiles (synthetic and natural fibres) • Foils c c c c c c c c c c c c c c c c PLASMA CH4/Ar c c c c c c c c • Applications: • Hydrophobic coatings • Hydrophilic coatings • Oleo phobic coatings • Barrier coatings • Biocompatible coatings • Inert behaving coatings FAA Materials Meeting (Zürich)

  6. NEW DEVELOPMENTS FOR AIRCRAFT INDUSTRY: TEXTILES • Activation of the textile with plasma technology, for a better uptake of FR-product and for a better adhesion of the FR-product onto the textile using impregnation technology • Already proven on PA-textiles (FAR 25.853 appendix f part 1) • Why it can be used: • For better adhesion of the flame retardant product onto the textiles: better wash ability • To reduce the chemical concentration in a impregnation bath (more environmental friendly) • To obtain extending flame retardant properties according the FAA-regulations for interiors. Plasma pre-treatment FAA Materials Meeting (Zürich)

  7. NEW DEVELOPMENTS FOR AIRCRAFT INDUSTRY: AIRCRAFT WINDOWS • Polymerization of multifunctional barrier coating with plasma technology • Fire retardant properties and anti-crazing properties • Development of scratch resistant multifunctional barrier • Why it can be used: • The multifunctional barrier should increase the burn-through time (longer time for evacuation) • The multifunctional barrier should also increase the crazing resistance due to some influences as temperature, UV-radiation, humidity, … • The coating will also increase the hours of flying: less maintenance is needed Plasma treatment FAA Materials Meeting (Zürich)

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