Flax fibre composite panel (1mm, 2mm, 3mm, 5mm laminate sheets)
Natural fibre composite laminates with density around 1.35 g/cm3 and tensile strength around 120 MPa (flax/epoxy laminate example). Fibre properties: tensile strength ~345?1830 MPa.
Natural fibre composite laminates with density around 1.35 g/cm3 and tensile strength around 120 MPa (flax/epoxy laminate example). Fibre properties: tensile strength ~345?1830 MPa.
Flax fibre composite panels use flax fibres in polymer matrices (e.g., epoxy). A flax/epoxy woven laminate data set reports density ~1.35 g/cm3, tensile strength ~120 MPa, tensile modulus ~13.5 GPa, and flexural strength ~165 MPa, with properties dependent on fibre volume fraction and processing. Flax fibre itself has reported tensile strength in the range ~345?1830 MPa and modulus ~27?80 GPa.
- Low density (~1.35 g/cm3) for flax/epoxy laminates
- Tensile strength around 120 MPa in laminate example
- Flax fibres have high specific stiffness compared with many natural fibres
- 01 Low density (~1.35 g/cm3) for flax/epoxy laminates
- 02 Tensile strength around 120 MPa in laminate example
- 03 Flax fibres have high specific stiffness compared with many natural fibres
- 01 Properties are highly dependent on fibre orientation and volume fraction
- 02 Fire performance not specified without system testing
- 03 Moisture sensitivity depends on resin system and protective coatings
- Density
- 1.35 g/cm3 Flax/epoxy laminate example (balanced weave, prepreg).
- Specific gravity
- 1.4-1.5
- Porosity
- 2-4% (resin-dependent) %
- Water absorption
- 1.5-3.3% (24 hours at 23°C) %
- Hardness
- Shore D 70-80
- UV resistance
- Poor - requires protective coating
- Chemical resistance
- Moderate - affected by alkaline solutions
- pH tolerance
- 4-9 pH range
- Surface roughness
- Ra 2-5 μm (moulded surface) µm
- Tensile strength
- 120 MPa Flax/epoxy laminate example (balanced weave).
- Compressive strength
- 100-150 MPa MPa
- Flexural strength
- 165 MPa Flexural strength for flax/epoxy laminate example.
- Shear strength
- 20-30 MPa MPa
- Poisson's ratio
- 0.35-0.4
- Impact resistance
- 15-25 kJ/m² (Charpy)
- Creep resistance
- Poor under sustained load at >50% ultimate strength
- Embodied carbon
- Data not available Product-specific LCA/EPD required.
- Carbon footprint
- 3.5-4.2 kg CO₂-eq/kg
- Embodied energy
- 55 GJ/tonne MJ/kg
- Water footprint
- 3,800-4,200 L/kg fibre L/kg
- Recycled content
- 0% (virgin agricultural fibres) %
- Renewable content
- 50-80% (fibre + bio-resin content) %
- Circular score
- 3/10 (limited recycling infrastructure)
- Expected lifespan
- 20-50 years (interior), 10-20 years (exterior protected)
- Maintenance interval
- Annual inspection, 3-5 year coating renewal (exterior)
- Warranty period
- 1 year (consumer), 10-15 years projected (structural)