Flame Retardant

Next-generation Estane^® Engineered Polymers with flame-retardants are available in halogenated and non-halogenated versions. Halogen-free grades are an effective alternative to PVC in wire and cable and meet the more stringent requirements for non-halogenated compounds in Europe. Environmental pressures have focused on reduced emissions of carcinogenic dioxines and chlorines, as well as reduced use of certain stabilizers, plasticizers, and flame retardants.

The primary market is extruded wire and cable jacketing for telecommunications, automotive, military, robotics, oil and gas, building and construction, and mass transit. Estane aromatic, polyether-based resin grades deliver good low-temperature flexibility, antimicrobial resistance, and good hydrolytic stability. They also offer better abrasion resistance and chemical resistance than PVC and olefinics. The workhorse material, Estane 58202 TPU, is an 85 Shore A extrusion grade that balances physical properties and flammability for commercial cable and military uses.

New flame-retardant grades with a limited oxygen index (LOI) approaching 40 are also emerging. Estane ZHF 95AT3 TPU is a non-halogenated grade with a LOI of 38 for tray cable applications. A developmental grade, Estane X-1311 TPU, boasts an LOI of 40.

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