Onto™ Adhesion Promoters Enabling a Greener Automotive Future

Terence Warmbier

Automotive market targets

“One of the greatest challenges still facing the (UK automotive) sector is the transition to a low-carbon future.”

SMMT New Car CO2 Report 2015

Climate change Ocean acidification Air quality

Fuel Emissions Fuel Economy

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Tackling Emissions

Global Automotive Lightweight Materials survey, April 2015

Which Material Do you Feel Is The Greatest Priority For Research And

Development For The Next 3 Years To Most Significantly Reduce Vehicle

Weight?

Light-weighting is more than just reducing weight, it is necessary to compensate for new drive components and new driver aids

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Onto™: A completely unique surface treatment technology

Patented worldwide

Multi-£M core technology platform developed over nine years by a team of highly skilled scientists

Onto™ adhesion promoters developed for industrial applications over the past two years

Wide range of market sectors - automotive, aerospace, etc.

Environmental credentials

Innovation

Onto™ solves the issues of joining mixed-materials

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Advancing the Joining of Materials

Steel

Welding Welding/Riveting/Adhesives

Aluminium

Adhesives/Welding

Composite

Steel processing is very well understood and vehicle manufacturers are heavily invested

Aluminium processing is now largely understood – involves mixed material jointing

Composite joining is still under development, not least because materials are still developing

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“46% of industry professionals admitted the cost and time of mixed-material joining is the biggest

hindrance to further reducing vehicle weight”. GALM survey April 2015

Advancing the Joining of Materials

Manufacturing reality…

Heavy investment in metals processing and the higher cost of composite materials means the reality in volume manufacturing is to introduce light-weight components over time. To achieve this overcoming the challenge of mixed-materials joining is critical. OntoTM can solve the problem – allowing the bonding for composite and metal components, both structural and non-structural

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Advanced materials are hard to bond to

• Chemical resistance

• Temperature resistance

Mixed-materials – an adhesive that works well with one material may not work with the other. OntoTM creates compatible surfaces

Bonding: compatibility problems

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Surface preparation must be practical for volume manufacture

• A single process suitable for all materials

• Easy to apply

• Flexible in application

• Fast processing

Bonding: compatibility problems

OntoTM meets all requirements No simpler solution

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Onto™ adhesion promoters

Carbene precursor Carbene

Δ

Onto™

B C A

Mechanical Abrasion

Chemical Bonding

Chemical Entanglement

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Issues with Mechanical Abrasion

Sanding or Grit/Shot Blasting

Time/

labour

Coverage

Component Design

H&S

Substrate Damage

Material

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Issues with Entanglement

• Why is adhesion such an issue now? - Environmental Drivers

• Adhesives and primers used to contain harmful organic solvents (Toluene, Xylene, Ethyl Benzene)

• These solvents swell the underlying material to prepare it for bonding

• Health & Safety concerns along with VOC limits mean these types of products are less welcome in a modern manufacturing environment

• Moving to Water based adhesives lowers H&S concerns – also non -flammable

• However primary adhesion mechanism is removed leading to adhesion issues

• Not effective on all plastics and composites

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Abrasion Plasma Chemical OntoTM

Environment H&S Time

Labour Capex

Longevity Complex shapes

Substrate damage Coverage

Wide range of substrates

Surface Treatment Choices

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Onto™ SB1000

https://www.youtube.com/watch?v=Al7QT3GLXUk

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Example of brush-applied Onto™ adhesion promoter:

Effective with a range of substrates…

Substrates Polyamide (Nylon) Carbon fibre epoxy Glass fibre epoxy

Engineering polymers Aluminium

PP HDPE

Polyamide

Snaps Adhesive fails

Carbon fibre epoxy

Blank Onto™

Blank Onto™ Snaps OAS Ltd - 19/10/15 ©

Non-destructive surface preparation

Abrasion Removes material Weakens substrate Variance leads to weak bond

Over Abrasion Weak bond Weaken substrate

Onto™ treated Consistent bond strength No damage to substrate

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Effective with a range of adhesives

Adhesive chemistry Adhesive formulation Epoxy

Polyurethane 100% solids

Water-based Film

Leather bonded to nylon with water-based PU

Blank

Onto™ Tears

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Oxford Advanced Surfaces

Onto™: Enabling the automotive industry to create an environmentally

better future

Effective Practical Scalable

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Oxford Advanced Surfaces Limited

@oas_ltd

www.oxfordsurfaces.com

info@oxfordsurfaces.com +44 1865 854 807

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