Phenolic - Phenol Formaldehyde (Hard paper and hard fabric)

Thermosetting plastic with paper layers or cotton fabric

Many plastics are too brittle to be used successfully as construction material without including reinforcing additives. In order to obtain useful plastics with specific properties, layers of paper or cotton fabric are soaked in resins and heated under pressure. The resin then hardens and connects the layers to a shape that, unlike thermoplastics, cannot be 'melted back' after curing.

In the above manner, thermosetting plastics with reinforcements are created. Such as phenolic resin with paper or fabric layers. These thermosetting plastic materials have a very high compressive strength, good electrical insulating properties (paper) and a low coefficient of expansion. In particular, the cotton fabric reinforced version is also very wear-resistant.

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Unique features

  • Very high mechanical strength (fabric)
  • High wear resistance (fabric)
  • High compressive strength (fabric/paper)
  • Good electrically insulating (paper)
  • Weatherproof (paper)

Applications

  • Heavily loaded gears. pulleys (fabric)
  • Scraper strips, clamping blocks (fabric)
  • Slip and wear strips (fabric)
  • Electronic sector insulating material (paper)
  • Mechanical precision parts (paper)

Machining options

  • Water jet cutting
  • Laser beam cutting
  • Gluing
  • Welding
  • Warm bending
  • Cold bending
  • Thermoforming
  • Yes
  • Not in all cases
  • No

Technical information

Hard Paper
  • General
    Definition Norm Unit Value
    Density ISO 1183 g/cm³ 1.35
    Moisture absorption in normal climate
    Fire rating DIN 4102
    Specific heat capacity kj/Kg°C
  • Mechanical
    Definition Norm Unit Value
    Tensile strength DIN 53455 N/mm  120
    Elongation to break DIN 53455 † 
    E-Module DIN 53457 (23°C) N/mm²  7000 
    Bending strength DIN 53452 N/mm²  150 
    Impact strength DIN 53453 (23°C) Charpy 15 
    Shore or ball pressure hardness Shore °D 80 
    Coefficient of friction † 
  • Electrical
    Definition Norm Unit Value
    Relative electrical constant DIN 53485 (100Hz) 100 Hz
    Dielectric loss factor DIN 53483 (100Hz) tan (..x10-³ † 
    Specific resistance DIN 53482 16 cm 10 
    Surface resistance DIN 53482 13 10 
    Creep current resistance DIN 53480 KC 100 
    Breakdown voltage DIN 53481 kV/mm 15
  • Thermal
    Definition Norm Unit Value
    Crystalline melting point °C  †
    Heat conductivity DIN 52162 W/m°K 0.2 
    Linear coefficient of expansion DIN 53762 mm/m°C 0.04 
    Long-term no-load operating temperature °C -40/120 
    Maximum short-term operating temperature °C 120 
    Heat deformation DIN 53461 °C † 
  • Temperature range
    Minimum temperature Maximum temperature
     -40°C  +120°C
Hard Fabric
  • General
    Definition Norm Unit Value
    Density ISO 1183 g/cm³ 1.35
    Moisture absorption in normal climate
    Fire rating DIN 4102
    Specific heat capacity kj/Kg°C
  • Mechanical
    Definition Norm Unit Value
    Tensile strength DIN 53455 N/mm 50 
    Elongation to break DIN 53455 † 
    E-Module DIN 53457 (23°C) N/mm²  7000 
    Bending strength DIN 53452 N/mm²  100 
    Impact strength DIN 53453 (23°C) Charpy 15 
    Shore or ball pressure hardness Shore °D 80 
    Coefficient of friction 0.22
  • Electrical
    Definition Norm Unit Value
    Relative electrical constant DIN 53485 (100Hz) 100 Hz  5
    Dielectric loss factor DIN 53483 (100Hz) tan (..x10-³ † 
    Specific resistance DIN 53482 16 cm 10 
    Surface resistance DIN 53482 13 10 
    Creep current resistance DIN 53480 KC 100 
    Breakdown voltage DIN 53481 kV/mm
  • Thermal
    Definition Norm Unit Value
    Crystalline melting point °C  †
    Heat conductivity DIN 52162 W/m°K 0.2 
    Linear coefficient of expansion DIN 53762 mm/m°C 0.04 
    Long-term no-load operating temperature °C -40/120 
    Maximum short-term operating temperature °C 140 
    Heat deformation DIN 53461 °C † 
  • Temperature range
    Minimum temperature Maximum temperature
     -40°C  +120°C