Glass fiber reinforced poly(1,4-butylene terephthalate) (PET-GF)/ decabromodiphenyl oxide ( DBDPO)/cerium phenylphosphonate ( CeHPP ) composites were prepared by melt blending. Cone test was employed to investigate the comprehensive combustion behavior and the thermal gravimetric-infrared spectrometry( TG-FTIR) was used to analyze the release amount and component of volatile gases produced during thermal degradation. The scanning electron microtopography( SEM) of char residues was observed, and the elements and contents in char residues were tested by energy dispersive X-ray spectrometer ( EDX ) and X-ray photoelectron spectroscopy( XPS) . The experimental results showed that the compounding of CeHPP and DBDPO in PET-GF restrained the thermo-oxidative degradation of PET-GF/DBDPO/CeHPP composites, retarded the combustion of condensed phases and reduced the smoke release. CeHPP formed the continuous and compact carbon char during combustion, dispersing among the surface of polymer matrix and glass fibers and restricting DBDPO and its decomposition products in condensed phases. Therefore, the synergism flame retardant effects of gaseous phase and condensed phase were achieved, suppressing the smoke release to gaseous phase effectively.%采用熔融共混法制备了玻璃纤维增强聚对苯二甲酸乙二酯(PET-GF)/十溴二苯醚(DBDPO)/苯基膦酸铈(CeHPP)复合材料,通过锥型量热仪(Cone)对复合材料的燃烧行为进行综合分析,采用热失重-红外联用(TG-FTIR)分析了复合材料热降解过程中气体的释放量和主要成分,并使用扫描电子显微镜(SEM)、能量色散X射线光谱仪(EDX)和X射线光电子能谱(XPS)对复合材料燃烧后的残炭形貌、 残炭所含元素及含量等进行表征.实验结果表明,当CeHPP与DBDPO两者复配使用时,PET-GF/DBDPO/CeHPP复合材料的热解过程受到抑制,凝聚相的燃烧减缓,材料总的热分解量降低,烟气释放量明显减小.这主要是由于CeHPP在燃烧过程中形成了连续致密的残炭,分布于基材和玻璃纤维表面,将部分DBDPO及其分解产物滞留于凝聚相,从而实现了气相-凝聚相双重阻燃作用,有效阻隔了挥发性气体产物的释放.
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