摘要
采用熔融共混法制备玻纤增强聚对苯二甲酸乙二酯/微胶囊红磷/有机改性蒙脱土(GF-PET/MRP/OMT)复合体系,并对材料的热稳定性和阻燃性进行了研究.当向GF-PET/MRP中引入OMT时,材料的残炭含量显著提高;与GF-PET/MRP相比,OMT的加入虽然使材料的LOI有所下降,但锥型量热结果表明,OMT不仅使材料的点燃时间滞后,而且热释放速率峰值也得到了下降.此外,GF-PET/MRP阻燃材料燃烧后形成较为平整的炭层结构,而GF-PET/MRP/OMT其残炭呈现褶皱形貌.该褶皱状结构的炭层能够更有效地起到隔氧隔热的作用,从而提高材料的热稳定性及阻燃性能.
Effects of organo-montmorillonite （OMT） on the flame retardancy and thermal stability of microencapsu- lated red phosphorus （MRP） flame retarded glass fiber reinforced PET （GF-PET） were investigated. Incorporating OMT into GF-PET/MRP, the nanocomposites showed higher char residues than GF-PET/MRP materials. Com- pared to GF-PET/MRP, the addition of OMT can not only delay the time to ignition （TTI）, but further reduce the peak heat release rate （PHRR） of samples. The char residue of GF-PET/MRP displayed a plain land-like structure, while the residue of GF-PET/MRP/OMT displayed a folded structure morphology because of the deposition of car- bonaceous residues on the surface of montmorillonite layers. This folded morphology of residue was responsible for the enhanced thermal stability and improved flame retardancy.
出处
《浙江大学学报（理学版）》
CAS
CSCD
2013年第4期437-440,446,共5页
Journal of Zhejiang University（Science Edition）
基金
宁波市自然科学基金资助项目(2011A610124)
关键词
有机改性蒙脱土
微胶囊红磷
阻燃
聚对苯二甲酸乙二酯
organo-montmorillonites
microencapsulated red phosphorus
flame retardant
poly （ethylene tereph-thalate）
