Posted on 09/02/2022 in Fire Safety 2021
Yann Bourgeois, Huber Martinswerk

Yann Bourgeois, Huber Martinswerk, presented results of combining zinc melamine polyphosphate (ZMP intumescent) and aluminium tri hydroxide (ATH) for LSZH (low smoke zero halogen) cables (polyethylene – EVA). The zinc in ZMP is known to reduce smoke emission and the melamine phosphate generates a carbonaceous intumescent protective layer. In typical cable formulation, replacing 60% ATH by 50% ATH – 10% ZMP resulted in lower heat release rates and five times reduced smoke emission, or enabled total FR content to be reduced for comparable fire performance.

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