Plastic Technology Service Ltd

V-PTS-Creamid Crosslinking PA

V-PTS-Creamid Crosslinking PA

For the electrical and appliance markets, PTS polymer scientists have developed a range of V-PTS-Creamid PA6, PA66, PA11 and PA12 that are crosslinkable by irradiation.

The crosslinking of V-PTS-Creamid polyamides by electron radiation or cobalt 60 (gamma rays) takes place independently of the moulding process. The degree of crosslinking can be suitably adjusted by varying the radiation dose, in many cases with the assistance of crosslinking boosters, which are supplied by PTS under the trade name BETALINK.

Advantages of Irradiation Crosslinking:

  • Dimensional Stability – Irradiation crosslinked materials retain their dimensional stability when heated over their former melting point (under low mechanical load)
  • Strength – Irradiation crosslinking normally creates higher strength as well as reduced creep under load if the application temperature is above the glass transition temperature (Tg) and below the former melting point
  • Chemical Resistance – Irradiation crosslinking leads to huge improvement in the resistance to most chemicals
  • Wear Properties – Irradiation crosslinking often leads to improvement in the wear behaviour
  • RTI Electrical– Irradiation crosslinking gives significant improvement in ageing behaviour
  • Hot Wire Ignition (HWI) – Irradiation crosslinked V-PTS-Creamid polyamide is extremely inflammable (HWI=0-1). Based on these new properties, flame retardant additives are no longer required according to UL508
  • Flammability – UL listed self extinguishing grades are available that meet the requirements of UL94 V0 at 0.8mm
  • Colour – Halogen and red phosphorous free grades are available giving no restriction on colour
  • Hard/Soft Combinations – If the raw materials are properly selected, hard/soft injection moulded parts can also be crosslinked by irradiation.
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