Preparation and Properties of Halogen-Free Flame Retardant Blending Modification Polyester

Sheng Chen; Min Su; Jian Wu Lan; Qing Kang Zheng

doi:10.4028/www.scientific.net/AMR.463-464.515

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Preparation and Properties of Halogen-Free Flame Retardant Blending Modification Polyester

Abstract:

Phosphorous-containing flame retardant additive for polyethylene terephthalate (PET), hexa(phenylamino)cyclotriphosphazene (HPACP) was synthesized by substitution reaction of hexachlorocyclotriphosphazene (HCCP) with aniline. The melting temperature of HPACP are 279.2°C, and HPACP possesses of favorable thermal stability. Flame-retardant effect of HPACP on PET was investigated by Differential Scanning Calorimetry (DSC) and Limit Oxygen Index (LOI) methods. With the content of flame retardant HPACP increasing, the melting enthalpy of PET reduced, while the melting temperature and onset temperature showed a decreasing tendency. With the weakening of melt dripping phenomenon, LOI of PET/ HPACP flame retardant systems increases with the increase of content of HPACP. LOI of PET containing 10 wt% of HPACP is 28.3.