writer：Guo ZH, Fang ZP, Chen C
keywords：Flame retardancy; Smoke suppression; Rare earth phenylphosphonate; Brominated flame retardant; Poly (1,4-butylene terephthalate)
source：期刊
specific source：Chemical Journal of Chinese Universities-Chinese, 2017, 38(2): 284-293
Issue time：2017年

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.