P, N-decorated halloysite nanotubes for flame retardancy enhancement of polyamide 6/aluminum diethylphosphinate

He, Wentao and Xu, Huahui and Song, Pingan ORCID: https://orcid.org/0000-0003-1082-652X and Xiang, Yushu and Qin, Shuhao (2022) P, N-decorated halloysite nanotubes for flame retardancy enhancement of polyamide 6/aluminum diethylphosphinate. Polymer Degradation and Stability, 196:109847. pp. 1-11. ISSN 0141-3910


Abstract

Flame-retardant functionalized nanomaterials have attracted much research interests due to the combined advantages of organic and inorganic components. In the present study, P, N-decorated halloysite nanotube (MA-PPA@HNT) was prepared via simple steps of phenphosphinic acid intercalation and subsequent electrostatic interaction with melamine. Compared to unmodified HNT, the incorporation of MA-PPA@HNT into polyamide 6 (PA6)/aluminum diethylphosphinic acid (AlPi) composite results in significant improvement of flame retardancy. At equal HNT loading of 2wt%, the UL-94 rating grade of PA6/AlPi/MA-PPA@HNT composite was V-0, whereas that of PA6/AlPi/HNT composite V-2. And compared with PA6, there is a decrease of peak heat release rate (pHRR) and total heat release (THR) by 72.6% and 17.4%, respectively. The flame retardant mechanism was analyzed by cone calorimetry, gas volatility and characterization of char residues. It is considered that MA-PPA@HNT plays the critical role of promoting the formation of P, Si-rich intumescent char in the condensed phase and enhancing the barrier effect for heat and mass transfer.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 27 Mar 2022 23:39
Last Modified: 31 Mar 2022 06:03
Uncontrolled Keywords: Halloysite nanotube; Phenphosphinic acid; Melamine; Flame retardancy; Polyamide
Fields of Research (2020): 40 ENGINEERING > 4016 Materials engineering > 401605 Functional materials
40 ENGINEERING > 4016 Materials engineering > 401609 Polymers and plastics
40 ENGINEERING > 4016 Materials engineering > 401602 Composite and hybrid materials
Socio-Economic Objectives (2020): 24 MANUFACTURING > 2409 Industrial chemicals and related products > 240910 Plastics
24 MANUFACTURING > 2409 Industrial chemicals and related products > 240904 Fine chemicals
Funding Details:
Identification Number or DOI: https://doi.org/10.1016/j.polymdegradstab.2022.109847
URI: http://eprints.usq.edu.au/id/eprint/47392

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