Preparation and characterization of flame-retarded polyamide 6 fibers with hexaphenoxycyclotriphosphazene

The aim of this work was to develop flame-retarded polyamide 6 fibers using the hexaphenoxycyclotriphosphazene (HPCP) as a flame retardant by melt spinning. The influence of HPCP on the spinning process was investigated. HPCP caused a lower melting point and a higher crystallinity of polyamide 6 chi...

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Bibliographic Details
Published in:Journal of industrial textiles 2021-10, Vol.51 (4), p.577-593
Main Authors: Gao, Libin, Wu, Xing, Di, Youbo, Zhao, Zhou, Wang, Wei, Yin, Xuan
Format: Article
Language:English
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Summary:The aim of this work was to develop flame-retarded polyamide 6 fibers using the hexaphenoxycyclotriphosphazene (HPCP) as a flame retardant by melt spinning. The influence of HPCP on the spinning process was investigated. HPCP caused a lower melting point and a higher crystallinity of polyamide 6 chips. The melt spinning temperature of the polyamide 6/HPCP composite fibers was less than the pure polyamide 6 fibers and the achievable draw ratio was determined. Structural and morphological characterization of the melt-spun fibers demonstrated good dispersion of HPCP additive. The introduction of HPCP did not change the crystal configuration of fibers in which the γ-crystal phase was predominant. The loss of mechanical properties of polyamide 6 fibers was mitigated by HPCP. The thermal behavior and flame retardancy of the polyamide 6/HPCP composite fibers was also enhanced effectively.
ISSN:1528-0837
1530-8057
DOI:10.1177/1528083719885013