Sandwich sheet with two outer layers of carbon fibre fabric (twill) and one filling layer Aramid Honeycomb 32 kg/m³.
Outer layers of carbon fibre:
CFK-Prepreg: Carbon fibre fabric 245 g/m² (twill), 3k (200 tex)
Resin system: Epoxy
Prepreg weight: 445 g/m²
Technical Data Prepreg:
Flexural strength (MPa): 1050 (0°), 990 (90°)
Tensile modulus (GPa): 62 (0°), 60 (90° )
Tensile strength (MPa): 1100 (0°), 1030 (90°)
Interlaminar shear strength (MPa):68 (0°), 70 (90°)
Tensile modulus (GPa): 70 (0°), 65 (90°)
Elongation at break (%): 1.6 - 1.7
Density (g/m³): 1.56
CFRP sheets are generally not UV-resistant.
Filling layer Aramid Honeycomb 32 kg/m³:
High impact, vibration, and fatigue strength
Extremely high compressive strength
Very good chemical resistance
Light supporting material produced from aramid paper for fibre compound parts in sandwich construction. With reference to weight, honeycombs have the greatest resistance to pressure amongst all support materials and extremely good resistance to chemicals, impact, vibration and fatigue. They are also very flexible and thus also suitable for components with spherical roundings. Mould pressure is used to bond honeycombs. A vacuum bag is normally used.
Technical data Aramid Honeycomb:
Density: 32 kg/m³
Thickness: 3.0 mm
Cell size: 3.2 mm
Production tolerances: Length: ≥ 0 mm, width: ≥ -5 mm, thickness: 2-50 mm: ±0.2 mm; 50.01-100 mm: ±0.5 mm; > 100.01 mm: ± 3 mm, Dichte: ± 10 %
Compressive strength (bare): 0.64 MPa
Shear strength: Length: 0.68 MPa, width: 0.41 MPa
Shear modulus: Length: 36 MPa, width: 20 MPa
Dimensions Carbon fibre/Aramid Honeycomb-Sandwich sheet:
Total thickness: 3.5 mm
Length x width: 1100 x 700 mm, 550 x 350 mm, 350 x 150 mm