Halogen-free flame retardant PES hot melt adhesive was prepared by using intumescent flame retardant (IFR) consisting of ammonium polyphosphate (APP), pentaerythritol (PER) and melamine (MEL) as flame retardants and Zeolite 4A as synergistic agent. The effect of IFR on flame retardancy of PES and synergistic effect between IFR and Zeolite 4A were studied. It was found that a small quantity of Zeolite 4A could promote flame retardant effect of IFR to PES. When IFR were 30wt%, PES/IFR achieved LOI value of 30.7%, UL-94 V-0 rate, and significantly reducing the maximum heat release rate; LOI value increased to 35.1% by adding extra 3wt% Zeolite 4A. TGA, SEM and XPS research showed that Zeolite 4A could catalyze esterification reaction of IFR, and facilitate to form much denser char; Zeolite 4A decomposed and participated into carbon reaction at high temperature, which stabilized the carbon residue and increased the amount.

Study of intumescent flame retardant PES hot melt adhesive

243rd National Meeting (2012)

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