In this paper, cellulose acetate butyrate microencapsulated Ammonium polyphosphate (APP) was successfully prepared with the aim of enhancing the water-resistance of APP and the compatibility between the EVA matrix and APP. The structure of microencapsulated ammonium polyphosphate (MCAPP) was characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The flame retadancy and thermal stability were investigated by limiting oxygen index (LOI) test, UL-94 test, Cone calorimeter and thermogravimetric analysis (TGA). The FTIR results indicated that MCAPP was successfully prepared. The results demonstrated that MCAPP enhanced interfacial adhesion, mechanical, electrical and thermal stability of EVA/MCAPP/PA-6 system. Furthermore, the microencapsulated EVA/MCAPP/PA-6 composites can still past UL-94 V-0 rating after treatment with water for 3 days at 70 �C, indicating excellent water-resistance. This investigation provides a promising formulation for the intumescent flame retardant EVA with excellent properties.

Effect of cellulose acetate butyrate microencapsulated ammonium polyphosphate on the flame retardancy, mechanical, electrical, and thermal properties of intumescent flame-retardant EVA/MCAPP/PA-6 blends

243rd National Meeting (2012)

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