# Presentation: 168381

## FAA Materials Meeting  (Zürich)

- 12-13 July 2004
**Plasma Technology: **
**An Environmentally Friendly Innovation for Aircraft Industry**

## PLASMA SYSTEM:

- Vacuum chamber
- Vacuum pumps
- Gas distribution
- RF-generator
- Process controller
- Loading principle

**PLASMA PARAMETERS:**
- Primary parameters:
- Gas type
- Residence time
- Secondary parameters:
- Gas flow
- Frequency
- Power
- Pressure

**WHAT IS PLASMA?**
- 4the state
- Ionized gas, highly reactive
- Visible glow discharge

- Low pressure: 5.10-2 - 1 mbar
- Ambient temperature: 30 - 40 °C
- Gasses: O2,N2,Ar,He,CxFy,H2,CH4,...
- Liquid monomers: HMDSO,...
- Frequency’s: KHz, MHz, GHz

**TREATMENTS:**
- Cleaning
- Activation
- Etching
- Polymerization

## 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

**Applications:**
- Printing and painting
- Gluing and flocking
- Biomedical cell growth
- Biocompatible coatings
- Soldering and bonding
- Laminate and Composite production

- PLASMA
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- PLASMA
- N2

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- NH2

- NO2

- OH      O

- COOH

- NH

## Plasma for etching of:

- Polymers (thermoplasts, duroplasts and elastomers)
- Textiles (synthetic and natural fibres)
- Foils

**To remove:**
- Parts of the material
- Whole layers
**To obtain:**
- Better Adhesion
- Roughening of the surface

**Applications:**
- Back etch of PCB
- Desmear of PCB, including PTFE
- Cleaning of laser vias (blind holes)
- Photo resist stripping
- Suitable for hybrid materials

- PLASMA

- PLASMA

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## Plasma for polymerisation of:

- Polymers (thermoplasts, duroplasts and elastomers)
- Textiles (synthetic and natural fibres)
- Foils

**To produce layers with:**
- Polymer like properties
- Pin-hole free dense properties
- Thickness in nm range
- Highly cross linked properties
- Custom designed surface properties

**Applications:**
- Hydrophobic coatings
- Hydrophilic coatings
- Oleo phobic coatings
- Barrier coatings
- Biocompatible coatings
- Inert behaving coatings

- PLASMA
- CH4/Ar

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## 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

## 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