苯基膦酸铈与十溴二苯醚在玻璃纤维增强聚对苯二甲酸乙二酯中的协同阻燃抑烟机理

发布时间：2018-07-25 07:01

【摘要】：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(Ce HPP)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Ce HPP与DBDPO两者复配使用时,PET-GF/DBDPO/Ce HPP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Ce HPP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.
[Abstract]:Glass fiber reinforced poly (ethylene terephthalate) (PET-GF) / decabromodiphenyl ether (DBDPO) / phenyl phosphonate cerium (Ce HPP) composites were prepared by melt blending method. The combustion behavior of the composites was analyzed by means of a cone calorimeter (Cone). The gas emission and main components in the thermal degradation process of composites were analyzed by thermogravimetric infrared (TG-FTIR). Scanning electron microscope (SEM) (SEM), energy dispersive X-ray spectrometer (EDX) and X-ray photoelectron spectroscopy (XPS) were used to characterize the morphology, elements and content of carbon residue after combustion. The experimental results show that the pyrolysis process of PET-GF / DBDPO / ce HPP composite is inhibited, the combustion of condensed phase is slowed down, the total thermal decomposition of the material is decreased, and the flue gas emission is obviously decreased when ce HPP and DBDPO are combined. This is mainly due to the formation of continuous and dense carbon residue in the combustion process of ce HPP, which distributes on the surface of substrate and glass fiber. Some of the DBDPO and its decomposition products are retained in the condensed phase, thus realizing the dual flame retarding effect of gas-condensed phase. It can effectively block the release of volatile gas products.
【作者单位】：浙江大学宁波理工学院高分子材料与工程研究所;
【基金】：国家自然科学基金(批准号:51203137) 浙江省自然科学基金(批准号:LY15E03000008) 宁波市自然科学基金(批准号:2014A610117)资助~~
【分类号】：TB332

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