期刊
POLYMER DEGRADATION AND STABILITY
卷 154, 期 -, 页码 239-247出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2018.06.005
关键词
PHMA sub-microtubes; Self-templated; Flame-retarded PET; Anti-dripping
Tubular one-dimensional poly (cyclotriphosphazene-melamine) (PHMA) sub-microtubes were conveniently synthesized from co-polymerization of hexachloro-cyclotriphosphazene and melamine. The SEM and TEM results showed PHMA sub-microtubes were opened at one end with diameters of 100-300 nm and lengths of 1-10 pm. The inner diameters of closed and open end were 10-30 nm and 50-100 nm, respectively. The PHMA sub-microtubes were melt blended with PET (PET/PHMA) to be used as an effective flame retardant. The flame-retardant and anti-dripping properties of PET/PHMA composites were evaluated by TGA, LOI, vertical burning, MCC and Theological test. The results confirmed the efficiency of PHMA in enhancing the self-extinguishing ability and inhibiting melt-dripping of PET. The morphological characteristics and graphitic structure of the charred residues were evaluated by SEM, Raman spectroscopy. Results demonstrated the formation of a compact protective carbon layer and a carbonaceous micro-structures, which acted as insulator against oxygen and heat. (C) 2018 Published by Elsevier Ltd.
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