Chem. J. Chinese Universities ›› 2013, Vol. 34 ›› Issue (12): 2903.doi: 10.7503/cjcu20130419

• Polymer Chemistry • Previous Articles    

Effect of MgAlZnFe-CO3 LDHs on Fire Retardancy and Mechanical Properties of Intumescent Flame Retardant Poly(butylene succinate) Composites

LIU Yue-Jun, MAO Long   

  1. Key Laboratory of New Materials and Technology for Packaging, Hunan University of Technology, Zhuzhou 412007, China
  • Received:2013-05-06 Online:2013-12-10 Published:2013-09-02

Abstract:

MgAlZnFe-CO3 layered double hydroxides(LDHs) with different proportions of metal ions were prepared by the constant pH coprecipitation method. Ammonium polyphosphate(APP), melamine(MA), and MgAlZnFe-CO3 LDHs were added in poly(butylene succinate) via melt blending to obtain the novel intumescent flame retardant poly(butylene succinate)(IFR-PBS) composites with MgAlZnFe-CO3 LDHs as a synergistic agent. The synthesized MgAlZnFe-CO3 LDHs were characterized by X-ray diffraction(XRD), Inductive coupled phasmamass spectrometer(ICP) and scanning electron microscope(SEM). Consequently, the layered structures of the synthesized MgAlZnFe-CO3 LDHs were observed. The fire retardancy and mechanical properties of the novel IFR-PBS composites were also evaluated. Compared to those of IFR-PBS composites without MgAlZnFe-CO3 LDHs, the limiting oxygen index(LOI) values of the novel IFR-PBS composites increased from 30% to 35% and the vertical flammability(UL-94) reached V-0 rate when the content of MgAlZnFe-CO3 LDHs was 1%(the total loading of flame retardant was 20%). Importantly, the tensile strength and flexural strength of the novel IFR-PBS composites could be enhanced by the presence of MgAlZnFe-CO3 LDHs.

Key words: Poly(butylene succinate), MgAlZnFe-CO3 LDHs, Intumescent flame retardant, Mechanical property

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