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EUROPLASMA NV

Journée technique automotive Marc Pauwels

Low Pressure Plasma Used For AutomotivePolymers

EUROPLASMA NV


OutlineCompany HistoryWhat is Plasma?Plasma Processes for PlasticsApplicationsPlasma EquipmentIn-line Plasma EquipmentConclusions

EUROPLASMA NV


Company HistoryU

p-sc

alin

g

Process complexity

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What is a plasma?‘Fourth state of matter’A plasma is a mix of

Charged particles (ions, electrons)Neutrals (atoms, radicals, molecules)

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What is a plasma?Plasma is generated by anelectromagnetical discharge in a gas at low pressure

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Plasma processes for plastics

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Plasma processesRemoval of molecular contamination layersfrom a surfaceEtching of a surface (several nm up to 1 µm)Chemical activation of a surfaceCross linking of chemical species on the surfacePlasma polymerization on a surfaceSubstrates can be plastics, metals or ceramics

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ActivationSurface modification of outer molecularlayersTreatment depth limited to typically 0,3 –1,5 nm!Process gas mixtures typically based uponO2, N2 or Ar

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Activation of plastics

High surface energy = low water contact angle = good wetting = good adhesion

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Surface Energy Dynes/cm

Water Contact Angle Degrees

before after before after 1. Hydrocarbons

29 72 87 22 31 72 87 42 38 72 72.5 15 35 72 82 26 41 72 71 18

Polypropylene Polyethylene Polystyrene ABS Polyester Rigid PVC 39 72 90 35 2. Fluorcarbons Polytetrafluorethylene polyethylene copolymer

37 72 92 53

Fluorinated ethylene propylene

22 72 96 68

Polyvinylidene 25 72 78.5 36 3. Elastomers Silicone 24 72 96 53 4. Thermoplastics

41 72 76.5 17.5 46 72 75 33

Pet Polycarbonate Polyamide 40 72 79 30

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Automotive polymersPP or PP/PE (Borealis, Domo)PCPPS: Ryton (Chevron Phillips)Glass fibre reinforced polyamides:

Grivory/Grilamide (EMS)Zytel (Dupont)Ixef (Solvay)Rilsan (Arkema)

TPE/TPU

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Activation applicable for:

PaintingPrintingGluingFlockingElectroplatingMetallisation

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ActivationActivation of plastic of plastic partsparts prior prior toto paintingpaintinguntreated

plasma treated

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EUROPLASMA NV


ActivationActivation of plastic of plastic partsparts prior prior toto gluinggluing

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PLASMA AS PLASMA AS PREPRE--TREATMENTTREATMENT PRIOR PRIOR TO GLUING : CASE 1 TO GLUING : CASE 1 -- POLYMERSPOLYMERS

TLSSTLSS--datadata PEPE PEPE PPPP PPPP

((MPaMPa)) UntreatedUntreated Plasma Plasma treatedtreated

UntreatedUntreated Plasma Plasma treatedtreated

ECCOBONDECCOBOND®® 23322332 0.630.63 > 2.61> 2.61 0.140.14 1.781.78

ECCOBONDECCOBOND®® 45 W 145 W 1 0.590.59 > 2.66> 2.66 0.120.12 1.821.82

SurfaceSurface Energy Energy ((mNmN/m)/m)

3030 > 68> 68 3333 > 68> 68

(ECCOBOND ®® is a registered trademark of National Starch is a registered trademark of National Starch & Chemical)& Chemical)TLSS = Tensile Lap Shear Strength

Epoxy adhesivesProducts supplied by:

EUROPLASMA NV


PLASMA AS PLASMA AS PREPRE--TREATMENTTREATMENT PRIOR PRIOR TO GLUING : CASE 1 TO GLUING : CASE 1 -- POLYMERSPOLYMERS

TLSSTLSS--datadata ABSABS ABSABS PBTPBT, 30 , 30 %GF%GF

PBTPBT, 30 , 30 % GF% GF

((MPaMPa)) UntreatedUntreated Plasma Plasma treatedtreated

UntreatedUntreated Plasma Plasma treatedtreated

ECCOBONDECCOBOND®® 23322332 -- -- 7.027.02 12.6212.62

ECCOBONDECCOBOND®® 45 W 145 W 1 1.601.60 > 4.92> 4.92 2.342.34 7.927.92


3535 > 68> 68 3535 > 68> 68

TLSS = Tensile Lap Shear Strength

Epoxy adhesives Products supplied by:

EUROPLASMA NV


PLASMA AS PLASMA AS PREPRE--TREATMENTTREATMENT PRIOR PRIOR TO GLUING : CASE 2 TO GLUING : CASE 2 –– METALSMETALS, Al, Al

TLSS (TLSS (MPaMPa)) UntreatedUntreated Plasma Plasma treatedtreated((physicalphysical

cleaningcleaning, Ar/O, Ar/O22))

Plasma Plasma treatedtreated((chemicalchemical

cleaningcleaning, O, O22))ECCOBONDECCOBOND®® 23322332 13.9013.90 18.1818.18 20.1020.10


3535 > 68> 68 > 68> 68

TLSS = Tensile Lap Shear Strength

Epoxy adhesive

Products supplied by:

EUROPLASMA NV


0

500

1000

1500

2000

2500

3000

3500

R-7-120NA R-4-200NA R-4-240NA XE5030NA XK2240 R-4

Max

bre

ak fo

rce,

N

Smooth surface - no pre-treatmentPlasma surface activation - 1Plasma surface activation - 2Physical surface roughening

Gluing of plasma activated PPS

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ActivationActivation of plastic of plastic partsparts prior prior toto gluinggluing//flockingflocking

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Electro-pneumatisch

luchtstroom

• 3-D parts

• Flock flow adjustable

• Air flow adjustable

• High Voltage adjustable

airflow

Electro pneumatic

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PolymerizationReactionReaction takestakes place on the place on the substratesubstrate surfacesurfacePermanent Permanent coatingscoatings withwith typicaltypical thicknessthickness of of tenstens of of nmnmFunctionalityFunctionality determineddetermined byby precursor gas(es):precursor gas(es):

HydrocarbonsHydrocarbons (+ O(+ O22): ): permanentlypermanently hydrophilichydrophiliccoatingscoatingsFluorocarbonFluorocarbon mixtures: mixtures: permanentlypermanently hydrophobichydrophobicand and oleophobicoleophobic coatingscoatings

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Applicable for:Non-woven media for filtration

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Oleophobic/Hydrophobic treatment filter media

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Applications

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Arm rest in car doorActivation of PP parts prior to gluing

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Motor capActivation prior to flocking

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DashboardActivation prior to flocking, gluing

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Silicone-based connector partsActivation prior to gluing

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Car bumperCleaning & activation prior to gluing

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Inner part of map holderActivation prior to gluing

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Glove boxActivation prior to flocking

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Control panelActivation prior to gluing

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Car radio partsActivation prior to painting

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Car glazingEtching before coating

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AirfiltersHydrophobic plasma coating

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Plasma treatment equipment

EUROPLASMA NV


CD400PLC

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CD1000PLC

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CD1800

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Custom Design

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EUROPLASMA NV


Roll- to-roll plasma treatment system fornonwovens

Pump systemVacuum chamber

Winding system

Electrode system

RF-Generator

Proces control system

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References AutomotiveVISTEONFAURECIAHUTCHINSONSTRUCTUPLASFREMACHMAGNETTI MARELLI (PLASTIVALOIRE)HELLAAKTSOURIAUECASECURIT SAINT-GOBAINKIEKERTQUALPLASTHONDA

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In-line plasma equipment

EUROPLASMA NV


Cycle: 6 bumpers in 6minutes

Custom Design

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MOLDOW

EUROPLASMA NV


EUROPLASMA NV


VENJAKOB

plasma

EUROPLASMA NV


VENJAKOB

EUROPLASMA NV


In-line 2D treatment system

EUROPLASMA NV


Conclusions

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Advantages of vacuum plasmaEffective treatment!

High surface energy levelsGood shelf life

Uniform treatment of three dimensionalpartsSimple process controlLow defect density

EUROPLASMA NV


Advantages of vacuum plasmaLow variable costsDry and clean processClean room compatible equipmentBatch process easily integrated in production line

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