Centre of ExpertiseBiobased Economy

Willem Böttger

Op zoek naar biobased coatings voor composieten

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LightLow maintenanceDouble curved formingFunction Integration

Composites are a growth market because of advantages …

Façade elements Enexis

Composites make light & large possible

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… but do have a disadvantage

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Biocomposite value chain

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Ashby Materials Chart

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… SOYA BEAN OIL …… LINSEED OIL … … FURANES …

BALSA WOODKURK PLA foam

Biocomposites

UD Woven non woven FLAX/HEMP FIBERS

RESINS BASED ON SUGARS

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Bio composites next to environmental do have more advantages:Acoustics, Radiance permeability, Aesthetics, Safety and Performance

0

0,5

1

1,5

2

2,5

Base Strong Light UD Aluminium Steel

Sp. Plate Stiffness as measured by NPSP (E 1/3/ρ)

N-1010

N-3010

N-5010

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Vibration damping much better

• Experiment1: UD flax vs UD carbon panels, [0°]9, epoxy, equal geometry

0 0.5 1 1.5 2-1

-0.5

0

0.5

1

Tijd [s]

Ver

plaa

tsin

g (g

enor

mal

isee

rd)

Gesimuleerde Impuls Responsie Buigmode

Carbon

Vlas

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Bio based Façade elements

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Maarten van Severen chair

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Renovation of flat unit, cover of air-air heat exchanger for heat pump

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Flax and hemp based monocoque scooter frame replacement of steal

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Biocomposite Bridge – realisation coming weeks

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-16Bron: Hans de Wit

SPARK

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Coating belangrijk:

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• Vocht, maar dampopen

•UV/kleur

• Krassen

• Brand

• Bacteriën en schimmels te verminderen

En

• biobased

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-18BronMoisture absorption capacity of natural insulation materialsl (Holcroft & Shea, 2013) en Joost de Vree

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Water uptake of composites

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-10%

-8%

-6%

-4%

-2%

0%

2%

4%

6%

8%

0 50 100 150

we

igh

t ch

ange

in f

lax

par

t o

f la

min

ate

days

flax used asreceived (20 °C /50% RH)

extra moist flax(100% RH)

oven-dried flax

max uptake, dryflax

max loss, moistflax

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-20Bron: Àmphia ziekenhuis,

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: Survival curve of E. coli ST131 hourly during the first day up to 7 hours and daily up to 3 days on glass and hemp composite*. Error bars are proposing the 95% confidence intervals.

Bron: Àmphia ziekenhuis,

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-22Bron: KIWA BDA testing