TECASINT 4111 natural

unfilled polyimide

Compared with the other TECASINT materials the TECASINT 4100 series exhibits extremely high thermal stability, extremely low moisture absorption and high mechanical rigidity. This is accompanied by a very high oxidative stability and increased resistance to chemicals. TECASINT 4111 has a very high thermal stability (HDT/A=470°C). Rigidity and modulus are significantly increased vis-a-vis conventional polyimides in a temperature range up to 400 °C. The material has minimal thermal and electrical conductivity. The plastic is highly pure with low outgassing in accordance with ESA regulation ECSS-Q-70-20.

Facts

Chemical designation
PI (Polyimide)
Colour
yellow
Density
1,47 g/cm3

Main Features

  • very high thermal and oxidative resistance
  • very low water absorption
  • high thermal and mechanical capacity
  • low outgassing
  • good chemical resistance
  • high creep resistance
  • resistance against high energy radiation
  • sensitive to hydrolysis in higher thermal range

Target industries

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Technical details


  • product-technical-detail-collapse-item-0-lvl-1
    Mechanical properties Value Unit Parameter Norm
    Notched impact strength (Charpy) 1.1 kJ/m2 max 7.5 J, 23°C DIN EN ISO 179-1
    Impact strength (Charpy) 20 kJ/m2 max 7.5 J, 23°C DIN EN ISO 179-1
    Shore hardness 90 - Shore D, 23°C -
    Tensile strength 100 MPa 50 mm/min, 23°C DIN EN ISO 527-1
    Elongation at break (tensile test) 1.7 % 50 mm/min, 23°C DIN EN ISO 527-1
    Modulus of elasticity
    (tensile test)
    6100 MPa 1 mm/min, 23°C DIN EN ISO 527-1
    Flexural strength 160 MPa 10 mm/min, 23°C DIN EN ISO 178
    Modulus of elasticity
    (flexural test)
    6100 MPa 2 mm/min, 23°C DIN EN ISO 178
    Compression strength 250 MPa 10 mm/min, 23°C EN ISO 604
    Compression modulus 2500 MPa 1 mm/min, 23°C EN ISO 604
    Elongation at break (tensile test) 2.5 % 10 mm/min, 23°C DIN EN ISO 178
    Compression strength 210 MPa 10mm/min, 10% strain, 23°C EN ISO 604
    Compressive strain at break 25 % 10 mm/min, 23°C EN ISO 604
    Ball indentation hardness 345 MPa -
  • product-technical-detail-collapse-item-1-lvl-1
    Thermal properties Value Unit Parameter Norm
    Glass transition temperature n.a. C DIN EN ISO 11357
    Heat distortion temperature 470 C 1.82 MPa ASTM D 648
    Thermal expansion (CLTE) 5.2 10-5*1/K 50-200°C DIN 53 752
    Thermal expansion (CLTE) 6.9 10-5*1/K 200-300°C DIN 53 752
    Thermal expansion (CLTE) 9.9 10-5*1/K 300-400°C DIN 53 752
    Thermal conductivity 0.52 W/(k*m) 40°C ASTM E1461
    Specific heat 1.24 J/(g*K) ASTM E1461
    Service temperature 450 C short term -
    Service temperature 294 C long term -
  • product-technical-detail-collapse-item-2-lvl-1
    Electrical properties Value Unit Parameter Norm
    surface resistivity 1016 O 23°C ASTM D 257
    volume resistivity 1016 O*cm 23°C ASTM D 257
    Dielectric constant 3.7 - 1 MHz, 23°C ASTM D 150
    Electric strength DC 22.7 kV*mm-1 23°C ASTM D 149
    Dielectric loss factor 0.0013 - 1 MHz, 23°C ASTM D 150
  • product-technical-detail-collapse-item-3-lvl-1
    Other properties Value Unit Parameter Norm
    Water absorption 0.08 % 24 h in water, 23°C DIN EN ISO 62
    Water absorption 0.3 % 24 h in water, 80°C DIN EN ISO 62
    Flammability (UL94) V0 - corresponding to DIN IEC 60695-11-10;
    Oxygen Index 53 % EN ISO 4589-2

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