Wire&Cables - HFFR

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Cables used in buildings, automotive public transportation and power networks are required to have strong fire resistance and low smoke generation. Halogen Free Flame Retardant (HFFR*) compounds are made of polyethylene, Lotryl®/Evatane® copolymers, high mineral fillers loading (ATH or MDH) and Orevac®/Lotader® coupling agents. Coupling agents facilitate compounding with high filler content, as well as improve flame retardancy and mechanical properties (before and after ageing).

* Also called:​ Low smoke non halogen (LSNH)​ / Low smoke 0-halogen (LS0H, LSZH)​ / Eco-product (In Japan) 

HFFR (Halogen Free Flame Retardants) compounds are replacing PVC in more and more transportation, construction and military applications. Their formulations are based on polyolefins blends including Lotryl® or Evatane® copolymers, polyethylene, high mineral fillers loading (ATH or MDH) and coupling agents to optimize flame retardancy, mechanical properties and cost.

● Flexible and polar copolymers such as Evatane or Lotryl ensure the base polymeric resins can accept a high loading of mineral fillers;

● Orevac or Lotader coupling agents are necessary to improve the mechanical performance of the highly filled compounds.

The recommended grades are:

  • Evatane® with 28% vinyl acetate content
  • Lotryl® with 24% or more methyl acrylate content – Lotryl T 24MA02T 29MA03T 40MA05T
  • Lotader® 3210 coupling agent
  • Orevac® 18343,18341 18507 IM800 CA100 coupling agent

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