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
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

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Technical details


  • product-technical-detail-collapse-item-0-lvl-1
    Mechanical properties Value Unit Parameter Norm
    Notched impact strength (Charpy) 3.8 kJ/m2 max 7.5 J, 23°C DIN EN ISO 179-1
    Impact strength (Charpy) 24.4 kJ/m2 max 7.5 J, 23°C DIN EN ISO 179-1
    Shore hardness 86 - Shore D, 23°C -
    Tensile strength 93 MPa 50 mm/min, 23°C DIN EN ISO 527-1
    Elongation at break (tensile test) 3 % 50 mm/min, 23°C DIN EN ISO 527-1
    Modulus of elasticity
    (tensile test)
    4943 MPa 1 mm/min, 23°C DIN EN ISO 527-1
    Flexural strength 131 MPa 10 mm/min, 23°C DIN EN ISO 178
    Modulus of elasticity
    (flexural test)
    4200 MPa 2 mm/min, 23°C DIN EN ISO 178
    Compression strength 208 MPa 10 mm/min, 23°C EN ISO 604
    Compression modulus 2067 MPa 1 mm/min, 23°C EN ISO 604
    Elongation at break (tensile test) 3.4 % 10 mm/min, 23°C DIN EN ISO 178
    Compression strength 163 MPa 10mm/min, 10% strain, 23°C EN ISO 604
    Compressive strain at break 36 % 10 mm/min, 23°C EN ISO 604
  • product-technical-detail-collapse-item-1-lvl-1
    Thermal properties Value Unit Parameter Norm
    Glass transition temperature 260 C DIN EN ISO 11357
    Thermal expansion (CLTE) 5.4 10-5*1/K 50-200°C DIN 53 752
    Thermal expansion (CLTE) 7.3 10-5*1/K 200-300°C DIN 53 752
    Thermal expansion (CLTE) 10.5 10-5*1/K 300-350°C DIN 53 752
  • product-technical-detail-collapse-item-2-lvl-1
    Other properties Value Unit Parameter Norm
    Water absorption 0.16 % 24 h in water, 23°C DIN EN ISO 62
    Water absorption 0.53 % 24 h in water, 80°C DIN EN ISO 62
    Flammability (UL94) V0 - corresponding to DIN IEC 60695-11-10;

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