Knowde Enhanced TDS
Identification & Functionality
- Reinforcement Form
- Reinforcement Material
- Composite Materials Functions
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Features
Fabric construction
Fiber type: Flax (EU)
Construction: +45/-45
Fabric weight: 350 gsm +/-5%
Ply construction
+45/-45 ply
Fiber type: Flax
Fiber tex: 105 TEX
Ply weight: 171 gsm
Stitching fiber
Thread: textured polyester
Weight: 6 gsm
Measurements
Standard width: 1270 mm
Standard roll length: 50m- Performance advantage
Considering that glass fibers have a density of 2600 kg/m3 and a tensile modulus of 70 GPa, the flax ampliTex biax 350 gsm can replace a 580 gsm glass fiber biax fabric to have the same stiffness in tension.
In compression, the performance of flax is a bit lower. Since a biaxial fabric often works in traction in one direction and compression in the other direction, the flax
ampliTex biax 350 gsm can replace a 550 gsm glass fiber biax fabric to have the same stiffness.
Applications & Uses
- Applications
- Compatible Polymers & Resins
- Compatible Reinforcements
- Composites Processing Methods
- Processing guidelines
- Good compatibility with epoxy and polyester
- Near- zero CTE, hence good processing compatibility with carbon fibers
- Compatible with infusion- based processes (vacuum infusion, RTM), wet layup, bladder inflation molding (BIM) and compression molding
- 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)
- Fiber weight fraction of 60% can be reached with process pressure > 5 bars. However, the fibers 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 the amount of resin used for laminating and impregnating with 50 to 60% resin in weight. Excess resin comes out while pressing the fabric.
Properties
- Physical Form
- Mechanical Properties
| Value | Units | Test Method / Conditions | |
| Tensile Modulus // to fibres | 61.0 | GPS | - |
| Tensile Modulus ⊥ to fibres | 6.4 | GPa | - |
| Tensile Strength // to fibres | 580.0 | MPa | - |
| Tensile Strain to failure // to fibres | 1.0 | % | - |
| Flexural Modulus // to fibres | 57.0 | GPa | - |
| Flexural Modulus ⊥ to fibres | 6.3 | GPa | - |
| Flexural Strength // to fibres | 663.0 | MPa | - |
| Density | 1350.0 | kg/m3 | - |