TECAPEEK PVX black

Bearing grade PEEK modification

TECAPEEK PVX black is a modified PEEK material using Victrex® PEEK 450G or Solvay KetaSpire® KT-820 and is classified in the same performance category as Victrex® PEEK™ FC30.

TECAPEEK PVX black was developed especially for bearing and sliding applications. It is based on a PEEK polymer that has been modified with 10% each of PTFE, graphite and carbon fibres. It combines the properties of a high-grade matrix material with special, wear-improving additives. Compared to all PEEK modifications, TECAPEEK PVX black has the lowest coefficient of friction, and shows higher wear resistance. In addition, a comparatively higher dimensional stability under thermal load is achieved. The reinforcement by means of carbon fibre and graphite in low friction PEEK plastic also ensures higher mechanical properties than is normally seen with unfilled PEEK.
Furthermore, it is helpful for a PEEK bearing material to have improved thermal conductivity in order to dissipate the frictional heat generated on the component as much as possible, thus avoiding thermal overload or overheating. In particular, the carbon fibre and graphite fillers in TECAPEEK PVX black help ensure improved thermal conductivity of this PEEK bearing grade. It also results in thermal conductivity that is three times higher than what we find in standard PEEK natural.  
For bearing and sliding applications, the resistance to high PV loads is particularly remarkable.

A comparison between TECAPEEK natural (unfilled PEEK) and TECAPEEK PVX black (PEEK bearing) also shows the differences relative to the coefficient of friction, depending on the number of cycles and different sliding speeds. The tests were carried out on a steel shaft Ø 4mm, at sliding speeds of 0-22 mm/s and a load of 30 N. 
PEEK PVX also offers outstanding tribological performance properties when used with non-metallic mating partners. At the same time, excellent chemical resistance is maintained. It can be used dry or with the application of an external lubricant.
This PEEK bearing modification, TECAPEEK PVX black, was developed for use under high loads and speeds in harsh environments and can also be operated under continuous exposure to hot water or steam.

As with all Ensinger PEEK materials, we can confirm that our bearing grade TECAPEEK PVX black meets the limitations imposed by RoHS Directive 2011/65/EU Restriction of Hazardous Substances in electrical and electronic equipment.

Compliances

Facts

Chemical designation
PEEK (Polyetheretherketone)
Colour
black
Density
1,44 g/cm3

Main Features

  • good heat deflection temperature
  • good slide and wear properties
  • high creep resistance
  • hydrolysis and superheated steam resistant
  • good wear properties
  • inherent flame retardant
  • very good chemical resistance

Target industries

Technical details


  • product-technical-detail-collapse-item-0-lvl-1
    Mechanical properties Value Unit Parameter Norm
    Modulus of elasticity
    (tensile test)
    5500 MPa 1mm/min DIN EN ISO 527-2
    Tensile strength 84 MPa 50mm/min DIN EN ISO 527-2
    Tensile strength at yield 84 MPa 50mm/min DIN EN ISO 527-2
    Elongation at yield (tensile test) 3 % 50mm/min DIN EN ISO 527-2
    Elongation at break (tensile test) 3 % 50mm/min DIN EN ISO 527-2
    Flexural strength 142 MPa 2mm/min, 10 N DIN EN ISO 178
    Modulus of elasticity
    (flexural test)
    6000 MPa 2mm/min, 10 N DIN EN ISO 178
    Compression strength 22/43/102 MPa 1% / 2% / 5% EN ISO 604
    Compression modulus 4000 MPa 5mm/min, 10 N EN ISO 604
    Impact strength (Charpy) 28 kJ/m2 max. 7,5J DIN EN ISO 179-1eU
    Ball indentation hardness 250 MPa ISO 2039-1
  • product-technical-detail-collapse-item-1-lvl-1
    Thermal properties Value Unit Parameter Norm
    Glass transition temperature 146 C DIN EN ISO 11357
    Melting temperature 341 C DIN 53765
    Service temperature 300 C short term NN
    Service temperature 260 C long term NN
    Thermal expansion (CLTE) 3 10-5*1/K 23-60°C, long. DIN EN ISO 11359-1;2
    Thermal expansion (CLTE) 3 10-5*1/K 23-100°C, long. DIN EN ISO 11359-1;2
    Thermal conductivity 0.82 W/(k*m) ISO 22007-4:2008
    Specific heat 1.1 J/(g*K) ISO 22007-4:2008
    Thermal expansion (CLTE) 4 10-5*1/K 100-150°C, long. DIN EN ISO 11359-1;2
  • product-technical-detail-collapse-item-2-lvl-1
    Electrical properties Value Unit Parameter Norm
    surface resistivity 104- 1011 O Conductive rubber, 23°C, 12% r.h. DIN EN 61340-2-3
    volume resistivity 107- 1012 O*cm Conductive rubber, 23°C, 12% r.h. DIN EN 61340-2-3
  • product-technical-detail-collapse-item-3-lvl-1
    Other properties Value Unit Parameter Norm
    Resistance to hot water/ bases + - -
    Flammability (UL94) V0 - corresponding to DIN IEC 60695-11-10;
    Resistance to weathering - - -
    Water absorption 0.03 % 24h / 96h (23°C) DIN EN ISO 62

Stock program