Issue 40, 2017

Functionalized allylamine polyphosphate as a novel multifunctional highly efficient fire retardant for polypropylene

Abstract

In this study, an efficient novel allylamine polyphosphate (AAPP) as a flame retardant (FR) crosslinker is used to improve the thermal stability of flame retarded polypropylene (PP) composites under electron beam treatment. First, a multifunctional AAPP has been designed and synthesized via a simple ion exchange reaction of the common ammonium polyphosphate (APP). AAPP was mixed with PP via a twin-screw extruder to prepare a series of flame retarded PP composites. Afterwards these composites were irradiated with high energy electrons in order to increase their thermal stability. The results showed an increased LOI value of PP/AAPP composites and effective melt dripping resistance in the UL-94 test in comparison with traditional PP/ammonium polyphosphate (APP) composites. Moreover, CC data like the heat release rate (HRR), total heat release (THR), smoke production rate (SPR), and total smoke production (TSP) showed that AAPP had a much better contribution to the flame retardation of PP than APP. Besides, AAPP provided an excellent quality of char residue in the combustion stage due to its P–N–C and P–O–C structures. Moreover, the environment-friendly electron beam technology was an efficient approach to improve the thermal stability of these multifunctional flame retarded PP composites without the use of additional stabilizers. This innovative idea may be expanded to other polymer systems to develop high performance polymer composites by environment-friendly electron beam technology.

Graphical abstract: Functionalized allylamine polyphosphate as a novel multifunctional highly efficient fire retardant for polypropylene

Supplementary files

Article information

Article type
Paper
Submitted
04 Aug 2017
Accepted
20 Sep 2017
First published
21 Sep 2017

Polym. Chem., 2017,8, 6309-6318

Functionalized allylamine polyphosphate as a novel multifunctional highly efficient fire retardant for polypropylene

D. Xiao, Z. Li, U. Gohs, U. Wagenknecht, B. Voit and D. Wang, Polym. Chem., 2017, 8, 6309 DOI: 10.1039/C7PY01315A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements