TECASINT 2391 black

Polyimide with 15 % MoS2

TECASINT 2391 has been developed with 15 % MoS2 from the base polymer TECASINT 2011. It has optimum friction and wear properties in a vacuum, which means it can be used in space travel applications, in a vacuum or in inert gases (techn. dry). The plastic displays low outgassing in accordance with ESA regulation ECSS-Q-70-20.


Chemical designation
PI (Polyimide)
1,53 g/cm3

Main Features

  • high thermal and mechanical capacity
  • very good slide and wear properties
  • low outgassing
  • very good thermal stability
  • good chemical resistance
  • high creep resistance
  • resistance against high energy radiation
  • sensitive to hydrolysis in higher thermal range

Target industries

Technical details

  • Mechanical properties
    Mechanical propertiesValueUnitParameterNorm
    Shore hardness88-Shore D, 23°C-
    Tensile strength95MPa50 mm/min, 23°CDIN EN ISO 527-1
    Elongation at break (tensile test)3.5%50 mm/min, 23°CDIN EN ISO 527-1
    Modulus of elasticity
    (tensile test)
    4100MPa1 mm/min, 23°CDIN EN ISO 527-1
    Flexural strength140MPa10 mm/min, 23°CDIN EN ISO 178
    Modulus of elasticity
    (flexural test)
    3900MPa2 mm/min, 23°CDIN EN ISO 178
    Compression strength230MPa10 mm/min, 23°CEN ISO 604
    Compression modulus2000MPa1 mm/min, 23°CEN ISO 604
    Elongation at break (tensile test)4.0%10 mm/min, 23°CDIN EN ISO 178
    Compression strength165MPa10mm/min, 10% strain, 23°CEN ISO 604
    Compressive strain at break35.6%10 mm/min, 23°CEN ISO 604
    Ball indentation hardness265MPaISO 2039-1
  • Thermal properties
    Thermal propertiesValueUnitParameterNorm
    Glass transition temperature357C-
    Thermal expansion (CLTE)4.710-5*1/K50-200°CDIN 53 752
    Thermal expansion (CLTE)5.710-5*1/K200-300°CDIN 53 752
  • Other properties
    Other propertiesValueUnitParameterNorm
    Water absorption0.53%24 h in water, 23°CDIN EN ISO 62
    Water absorption1.58%24 h in water, 80°CDIN EN ISO 62
    Flammability (UL94)V0-corresponding toDIN IEC 60695-11-10;

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