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LAPEX A

Family: LAPEX A
Base resin:Polyethersulphone (PESU)
General information
Product made of Polyethersulphone (PESU). Unfilled. Intrinsically flame retardant. PFAS-free product.
Versions of product mentioned herein are suitable for applications in contact with foodstuffs or for toy manufacturing. Nevertheless, manufactured parts have to be verified according to the specific directives.
The products mentioned herein are not suitable for applications in the pharmaceutical, medical or dental sector.
Features
  • - Intrinsically flame retardant.
Project challenges
  • - High temperature usage
  • - Flame retardancy halogen free
  • - Chemical stability
  • - Wear and friction
Additives
  • - Unfilled
Process types
  • - Injection moulding
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Technical datasheets
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Technical characteristics
Physical properties Standard Value Measure Units
Density ISO 1183 1.37 g/cm³
Linear shrinkage at moulding
Longitudinal (2.0mm/60MPa) ISO 294-4 0,70 ÷ 0,90 %
Transversal (2.0mm/60MPa) ISO 294-4 0,75 ÷ 0,95 %
Dimensional stability --- 81
Moisture absorption
Saturation, in air ISO 62-4 0.8 %
At saturation, in water ISO 62-4 2.2 %
Melt Flow Index (MFI) ASTM D 1238 30,00@380°C/2,16kg g/10'
Mechanical properties Standard Value Measure Units
CHARPY impact strength
Notched, at +23°C ISO 179-1eA 6 kJ/m²
Notched, at -20°C ISO 179-1eA 2.5 kJ/m²
Tensile elongation
At yield (5 mm/min), 23°C ISO 527 6.3 %
At yield (5 mm/min), 60°C ISO 527 5.5 %
At yield (5 mm/min), 90°C ISO 527 4.8 %
At yield (5 mm/min), 120°C ISO 527 4.3 %
At yield (5 mm/min), 150°C ISO 527 3.8 %
Tensile strength
At yield (5 mm/min), 23°C ISO 527 85 MPa
At yield (5 mm/min), 60°C ISO 527 75 MPa
At yield (5 mm/min), 90°C ISO 527 70 MPa
At yield (5 mm/min), 120°C ISO 527 60 MPa
At yield (5 mm/min), 150°C ISO 527 45 MPa
Elastic modulus
Tensile (1 mm/min), 23°C ISO 527 3000 MPa
Tensile (1 mm/min), 60°C ISO 527 2500 MPa
Tensile (1 mm/min), 90°C ISO 527 2500 MPa
Tensile (1 mm/min), 120°C ISO 527 2500 MPa
Tensile (1 mm/min), 150°C ISO 527 2000 MPa
Thermal properties Standard Value Measure Units
Coefficient of linear thermal expansion (CLTE)
+30°C to +100°C (longitudinal) ISO 11359 50 × 10⁶ K¹
+30°C a +100°C (transversal) ISO 11359 45 × 10⁶ K¹
VICAT - Softening point
50N (heating rate 120°C/h) ISO 306 215 °C
HDT - Heat Deflection Temperature
0.45 MPa ISO 75 210 °C
1.81 MPa ISO 75 195 °C
Thermal conductivity
in plane ASTM E 1461-92 0.2 W/mK
through plane ASTM E 1461-92 0.2 W/mK
Flammability Standard Value Measure Units
Oxygen Index ASTM D 2863 39 %
Flammability rating
3 mm thickness UL 94 V-0
1.5 mm thickness UL 94 V-0
Electrical properties Standard Value Measure Units
CTI - Comparative Tracking Index - solution A (without surfactant) IEC 60112 125 V
Electrical resistivity
Surface, dry ASTM D 257 1E12 ohm
Dielectric strength (short period)
2 mm thickness, 23°C, dry ASTM D 149 25 kV/mm
Melt Temperature Standard Value Measure Units
Suggested melt temperature --- 340 ÷ 370 °C
Mould Temperature Standard Value Measure Units
Suggested mould temperature --- 140 ÷ 165 °C
Drying conditions (hot air dessiccator)
Predrying needed. At least 3 hours at 130 ÷ 170°C
Injection speed
Injection speed: low to medium. Setting an injection profile should improve moulding.
Hot runners
Usage of hot runner: possible