THERMOPLASTIC HFFR INSULATION AND SHEATH COMPOUNDS
Ocak 17, 2020SILICONE AND RUBBER POLYMERS
Ocak 21, 2020HFFR COMPOUNDS USED IN CABLE INSULATION
Wiring systems installed in the buildings increase the spread rate of the fire since they are in flammable and toxic gas producing structures. The cables burning during the fire endanger the safety of life because they produce poisonous gas. In fire incidents, it has been determined that the cables cause fire spread and poison the living creatures. Among the causes of this poisoning is that the insulation materials used in cable insulation and sheaths contain halogen. Materials known as halogens are poisonous and dangerous elements. The compounds they make with metal and gases during the fire have a destructive and lethal effect on living things and structures. Thanks to the technology developed today, the materials used in cable insulation and sheath have been produced as a material that does not produce corrosive gas that is based on fire for a certain time, does not conduct flame and poison. Cable insulation and sheath materials of this type are what we call HFFR. In short, HFFR (Halogen Free Flame Reterdant) wrists should be flammable in terms of security and can be self-extinguishing. HFFR materials are produced by blending EVA, PP and PE polymers with ATH (aluminum trihydroxide) or MDH (magnesium hydroxide) in a proportional ratio. The combustion values of these materials are LOI (limiting oxygen index). LOI can be calculated as the percentage of oxygen in the air mixture that must be present in the environment for the burning of a material. In the air ratio containing 15% oxygen, the greater the LOI value is 15%, the greater the flammability of the material. The HFFR compounds are divided into thermoset and thermoplastic.
