TECAPEI™ EF natural

PEI Bio-based

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TECAPEI EF natural (PEI) is an unreinforced, mass-balanced polyetherimide from our range of semi-finished products made from bio-based raw materials. It has been developed for applications across a wide range of sectors, including healthcare, the aerospace industry, consumer electronics and food processing.

Compared with its fossil-based counterpart, this biopolymer has a lower product carbon footprint. At the same time, the mass-balanced bioplastic offers equally outstanding mechanical strength and stiffness; its property profile includes remarkable hydrolysis resistance and dimensional stability. Furthermore, it ensures a comparatively high service temperature over the long term. TECAPEI EF natural is available as a bio-PEI semi-finished product in the form of plates and rods.

The material forms part of Ensinger’s ‘Reuse for Tomorrow’ solutions. These comprise carefully developed products which, thanks to a lower PCF compared with their respective fossil-based equivalents, can help to reduce greenhouse gas emissions. The relevant PCF values and information on how they are calculated can be found in the downloads section.

Facts

Chemical designation
PEI (Polyetherimide)
Colour
amber transparent
Density
1.28 g/cm3

Main Features

  • 100% bio-based
  • high dielectric strength
  • inherent flame retardant
  • easily machinable to tight tolerance
  • low smoke emissions
  • high thermal and mechanical capacity
  • flame retardant according to UL94 V-0

Target industries

Downloads

Technical details


  • product-technical-detail-collapse-item-0-lvl-1
    Mechanical properties Value Unit Parameter Norm
    Tensile strength at break 17,560 psi @ 73 °F ASTM D 638
    Modulus of elasticity
    (tensile test)
    592,000 psi @ 73 °F ASTM D 638
    Elongation at break (tensile test) 49 % @ 73 °F ASTM D 638
    Elongation at yield (tensile test) 6.4 % @ 73 °F ASTM D 638
    Flexural strength 20,200 psi @ 73 °F ASTM D 790
    Notched impact strength (Izod) 0.75 ftlbsin @ 73 °F ASTM D 256
    Modulus of elasticity
    (flexural test)
    490,400 psi @ 73 °F ASTM D 790
    Rockwell hardness 126 M Scale ASTM D 785
    Compression strength 22,160 psi @ 10% strain ASTM D 695
    Compression modulus 581,200 psi ASTM D 695
    Compression strength 4,990 psi @1 % strain ASTM D 695
  • product-technical-detail-collapse-item-1-lvl-1
    Thermal properties Value Unit Parameter Norm
    Deflection temperature 394 F @264 psi ASTM D 648
    Thermal expansion (CLTE) 3.1*10-5 ininF ASTM E 831
    Vicat softening point 426 F ASTM D 1525
    Thermal conductivity 1.5 BTU-in/hr-ft^2 - deg ASTM D 2214
    Deflection temperature 410 F @ 66 psi ASTM D 648
    Service temperature 392 F short term -
    Service temperature 338 F Long Term -
  • product-technical-detail-collapse-item-2-lvl-1
    Electrical properties Value Unit Parameter Norm
    Dielectric strength 709 V/mil In Oil ASTM D 149
    Dielectric strength 830 V/mil In Air ASTM D 149
    Dissipation factor 0.0013 - 1 kHz, 50% RH, 73 °F ASTM D 150
    Dielectric constant 3.15 - 1 kHz, 50% RH ASTM D 150
    volume resistance 1.0 x 1017 Ω*cm 1/16 ASTM D 257
  • product-technical-detail-collapse-item-3-lvl-1
    Other properties Value Unit Parameter Norm
    Flammability (UL94) V0 - -
    Moisture absorption .15 % @ 24 hrs, 73 °F ASTM D 570
    Moisture absorption 1.25 % @ saturation, 73 °F ASTM D 570
    Flammability pass - 3 mm FAR 25.853