Most halogen-based flame retardants for polyolefins are under strong regulatory pressure due to their environmentally persistent, bioaccumulative, and toxic nature. Halogen Free Flame Retardant (HFFR) technology provides flame retardancy that is typically based on endothermic decomposition of benign metal hydroxides such as magnesium hydroxide and aluminum hydroxide. However, significant loading of these mineral fillers is necessary to achieve adequate flame retardancy, which compromises processability and mechanical properties. Such issues can be aggravated with some base resins that are economical and excellent insulation material for wire and cable application.<br/>This presentation will discuss HFFR technology that provides advantages for polyethylene in wire and cable applications by offering flame retardant compounds representatively based on (1) Designed plastomers such as AFFINITY™ Polyolefin Plastomers and ENGAGE™ Polyolefin Elastomers; (2) Polar ethylene copolymers like ELVAX™ EVA Copolymer Resins and ELVALOY™ AC Copolymers; (3) Maleic anhydride grafted polyethylenes such as FUSABOND™ Functional Polymers, and DOWSIL™ Silanes; (4) Silicones and/or silicone gums – DOWSIL™ Silicones. This HFFR Technology provides improved flame retardant properties, such as lower peak heat release rate and less smoke production compared to Dow conventional HFFR and halogenated FR technology. Heat release properties and smoke characteristics can be measured by a cone calorimeter (ASTM E1354) and a NBS smoke density chamber (ASTM E662). New HFFR offerings are developed for highly demanding applications, such as for the construction of cables suitable for the Euroclass B2ca classification under European Construction Product Regulations.<br/>™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow

Dow Wire and Cable Halogen Free Flame Retardant Technology

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ACS Fall 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.