from natural fibres as fillers towards high end applications in composites
DESCRIPTION
From natural fibres as fillers towards high end applications in composites. Lindy Hensen & Willem B öttger. This is a presentation from . Content NPSP Composites NaBasCo Optimization NaBasCo Conclusion. NPSP Composites. Established in 1998 Around 25 employees - PowerPoint PPT PresentationTRANSCRIPT
From fillers towards high end applications
From natural fibres as fillers towards high end applications in
composites.
Lindy Hensen & Willem Böttger
This is a presentation from
From fillers towards high end applications
Content
NPSP Composites NaBasCo Optimization NaBasCo Conclusion
From fillers towards high end applications
NPSP Composites
From fillers towards high end applications
Established in 1998 Around 25 employees Thermosetting composites Some customers: Nedtrain, ANWB, G-Star,
From fillers towards high end applications
Products NPSP Composites
From fillers towards high end applications
Production processVacuum Assisted – Resin Transfer Moulding
From fillers towards high end applications
Options NPSP Composites
• Transparent resins• Different kinds of fibres possible
•Integration of LEDs
• Use of inserts• Details on all sides
• Double shaped curves• Elegant products
From fillers towards high end applications
Mission NPSP Composites
‘It is our mission to make sustainable composites common ground.’
Fibres Resins
From fillers towards high end applications
Nature Based Composites
From fillers towards high end applications
NaBasCo
From fillers towards high end applications
Nature Based Composites
From fillers towards high end applications
Nature Based Composites
NaBasCo is:• Natural fibres: flax, hemp• Resins: polyester• Sandwich material & additives
From fillers towards high end applications
Current situation
Current reasons to apply natural fibres: Weight Price Acoustics Radiance permeability Health and safety in processing Esthetics Sustainability
From fillers towards high end applications
Current situation
Non-wovens No optimization fibres for use in composites Hands on approach
From fillers towards high end applications
Current situation
Consequences: a lot of uncertainties What about: fire resistance, moisture sensitivity, lifetime, etcetc.
From fillers towards high end applications
Optimization NaBasCo
From fillers towards high end applications
Potential natural fibresMechanical properties
Flax Hemp GlassDENSITY g/m3 1,4-1,5 1,48 2,55YOUNG’S MODULUS GPa 50-70 30-60 73TENSILE STRENGTH MPa 900-1400 400-700 2400-
3500
STRAIN AT FAILURE % 2,0-3,0 1,6-2,5 3,0
Flax Hemp GlassSpecific YOUNG’S MODULUS
GPa 33-50 20-41 29
Specific TENSILE STRENGTH
MPa 600-1000 270-473 941-1373
From fillers towards high end applications
Optimization NaBasCoMechanical properties
Current optimization steps: Use of wovens and unidirectional mats
UD flax (20 V% )*UP Ref: Glass non-woven (20 V%) * UP
Strength (MPa) 180 140E-modulus (GPa) 14 8,5
From fillers towards high end applications
Optimization NaBascoMechanical properties
Current optimization steps: Low-torque yarn or direct use of sliver: Twining results in reduction of tensile strength of at least 10%
From fillers towards high end applications
Optimization NaBascoMechanical properties
Current optimization steps: Lower moisture content of natural fibres
Moisture content natural fibres around 10%. Influence drying on mechanical properties:
E-modulus: 60% higher Tensile strength: 25% higher
From fillers towards high end applications
Optimization NaBascoMechanical properties
Other possible optimization steps: Use of sizings to improve adhesion resin-fibres Thermal modification of natural fibres Other natural fibres
Besides mechanical properties: This year official tests on: fire resistancy, moisture absorption and uptake, aging,… Further “greening” of NaBasCo:
From fillers towards high end applications
Optimization NaBasCoPotential fully bio-based composites
The next step: also bio-based resins. A few resins on the market; 25%-100% bio-based; Not all fit for VA-RTM: viscosities, high
curing temperatures (>140 degrees); Compatibility with natural fibres limited: moisture sensitivity, aggressive.
From fillers towards high end applications
Conclusion
From fillers towards high end applications
Conclusion
NaBasCo shows a lot of potential: UD flax already show mechanical properties comparable (or higher) to that of glass non- woven. Fully bio-based composites are proven to be feasible in the future
From fillers towards high end applications
Conclusion
Optimizations and development are needed: Optimization of processing of natural fibres for use in composites; Optimization of natural fibre reinforced composites; Towards fully bio-based composites (bio-resins!); Chain & market development.
From fillers towards high end applications
Questions or suggestions?
Contact:NPSP Composieten BV
Lindy Hensen+31 23 55 123 28