TECASINT 4021 black

polyimide with 15 % graphite

Starting with the base polymer TECASINT 4011, TECASINT 4021 with 15% graphite has been developed. Thanks to the improved friction and wear properties, TECASINT 4011 is particularly suitable for tribological applications. It is also suitable for dry applications since the material is self lubricating.

Facts

Chemical designation
PI (Polyimide)
Colour
anthracite
Alternative colours available

Density
1,49 g/cm3

Main Features

  • very high thermal and oxidative resistance
  • very low water absorption
  • very good slide and wear properties
  • high thermal and mechanical capacity
  • 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
    Notched impact strength (Charpy)3.8kJ/m2max 7.5 J, 23°CDIN EN ISO 179-1
    Impact strength (Charpy)24.4kJ/m2max 7.5 J, 23°CDIN EN ISO 179-1
    Shore hardness86-Shore D, 23°C-
    Tensile strength93MPa50 mm/min, 23°CDIN EN ISO 527-1
    Elongation at break3%50 mm/min, 23°CDIN EN ISO 527-1
    Modulus of elasticity
    (tensile test)
    4943MPa1 mm/min, 23°CDIN EN ISO 527-1
    Flexural strength131MPa10 mm/min, 23°CDIN EN ISO 178
    Modulus of elasticity
    (flexural test)
    4200MPa2 mm/min, 23°CDIN EN ISO 178
    Compression strength208MPa10 mm/min, 23°CEN ISO 604
    Compression modulus2067MPa1 mm/min, 23°CEN ISO 604
    Elongation at break3.4%10 mm/min, 23°CDIN EN ISO 178
    Compression strength163MPa10mm/min, 10% strain, 23°CEN ISO 604
    Compressive strain at break36%10 mm/min, 23°CEN ISO 604
  • Thermal properties
    Thermal propertiesValueUnitParameterNorm
    Glass transition temperature260CDIN EN ISO 11357
    Thermal expansion (CLTE)5.410-5*1/K50-200°CDIN 53 752
    Thermal expansion (CLTE)7.310-5*1/K200-300°CDIN 53 752
    Thermal expansion (CLTE)10.510-5*1/K300-350°CDIN 53 752
  • Other properties
    Other propertiesValueUnitParameterNorm
    Water absorption0.16%24 h in water, 23°CDIN EN ISO 62
    Water absorption0.53%24 h in water, 80°CDIN EN ISO 62
    Flammability (UL94)V0-corresponding toDIN IEC 60695-11-10;

Stock program