Flax fiber composite fabric 5025

unidirectional

Product description Non-crimp unidirectional flax fabric with fibres oriented at 0°, suitable for manufacturing fibre reinforced composite products with a high performance and a low environmental impact. Performance advantage Considering that glass fibres have a density of 2600 kg/m3 and a tensile modulus of 70 GPa, the flax ampliTex UD 300 gsm can replace a 500 gsm glass fibre UD fabric to have the same stiffness in tension. In compression, the performance of flax is a bit lower, thus the flax ampliTex UD 300 gsm can replace a 440 gsm glass fiber UD fabric to have the same stiffness. Processing guidelines • Good compatibility with epoxy and polyester • Near-zero CTE, hence good processing compatibility with carbon fibres • Compatible with infusion-based processes (vacuum infusion, RTM), wet layup, bladder inflation moulding (BIM) and compression moulding • Flax fibers always contain some humidity at ambient conditions. Some resins (especially polyesters) are sensitive to moisture and may badly polymerize or create bubbles. In that case, dry the fabrics before use (110°C for 15 minutes) • Fibre weight fraction of 60% can be reached with process pressure > 5 bars. However, the fibres absorb a lot of resin when hand-laminating the fabric and it tends to look “dry” (unless too much resin is used) before pressure is applied. We recommend controlling amount of adhesive used for laminating and to impregnate with 50 to 60% resin in weight. Excess resin comes out while pressing the fabric