Carbon Fibers Decorated by Polyelectrolyte Complexes toward Their Epoxy Resin Composites with High Fire Safety

Xiao-Hui Shi; Li Chen; Bo-Wen Liu; Jia-Wei Long; Ying-Jun Xu; Yu-Zhong Wang

doi:10.1007/s10118-018-2164-1

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Carbon Fibers Decorated by Polyelectrolyte Complexes toward Their Epoxy Resin Composites with High Fire Safety

ARTICLE | Updated：2021-02-18

- Carbon Fibers Decorated by Polyelectrolyte Complexes toward Their Epoxy Resin Composites with High Fire Safety
- Chinese Journal of Polymer Science Vol. 36, Issue 12, Pages: 1375-1384(2018)
- Affiliations：
  
  School of Chemical Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610064, China
- Author bio：
  
  yzwang@scu.edu.cn
- Funds：
- DOI：10.1007/s10118-018-2164-1
  CLC：
- Received：18 May 2018，
  
  Revised：2018-5-28，
  
  Accepted：28 May 2018，
  
  Online First：04 July 2018，
  
  Published：2018-12
- Accepted：
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Citation: Shi, X. H.; Chen, L.; Liu, B. W.; Long, J. W.; Xu, Y. J.; Wang, Y. Z. Carbon Fibers Decorated by Polyelectrolyte Complexes toward Their Epoxy Resin Composites with High Fire Safety. Chinese J. Polym. Sci. 2018, 36(12), 1375–1384

Xiao-Hui Shi, Li Chen, Bo-Wen Liu, et al. Carbon Fibers Decorated by Polyelectrolyte Complexes toward Their Epoxy Resin Composites with High Fire Safety[J]. Chinese Journal of Polymer Science, 2018, 36(12): 1375-1384.
Citation: Shi, X. H.; Chen, L.; Liu, B. W.; Long, J. W.; Xu, Y. J.; Wang, Y. Z. Carbon Fibers Decorated by Polyelectrolyte Complexes toward Their Epoxy Resin Composites with High Fire Safety. Chinese J. Polym. Sci. 2018, 36(12), 1375–1384 DOI： 10.1007/s10118-018-2164-1.

Xiao-Hui Shi, Li Chen, Bo-Wen Liu, et al. Carbon Fibers Decorated by Polyelectrolyte Complexes toward Their Epoxy Resin Composites with High Fire Safety[J]. Chinese Journal of Polymer Science, 2018, 36(12): 1375-1384. DOI： 10.1007/s10118-018-2164-1.

摘要

Abstract

The achievement of both robust fire-safety and mechanical properties is of vital requirement for carbon fiber (CF) composites. To this end

a facile interfacial strategy for fabricating flame-retardant carbon fibers decorated by bio-based polyelectrolyte complexes (PEC) consisting of chitosan (CH) and ammonium polyphosphate (APP) was developed

and its corresponding fire-retarded epoxy resin composites (EP/(PEC@CF)) without any other additional flame retardants were prepared. The decorated CFs were characterized by SEM-EDX

XPS and XRD

indicating that the flame-retardant PEC coating was successfully constructed on the surface of CF. Thanks to the nitrogen- and phosphorous-containing PEC

the resulting composites exhibited excellent flame retardancy as the limiting oxygen index (LOI) increased from 31.0% of EP/CF to 40.5% and UL-94 V-0 rating was achieved with only 8.1 wt% PEC. EP/(PEC8.1@CF) also performed well in cone calorimetry with the decrease of peak-heat release rate (PHRR) and smoke production rate (SPR) by 50.0% and 30.4%

respectively

and the value of fire growth rate (FIGRA) was also reduced to 3.41 kW·m

−2

·s

−1

from 4.84 kW·m

−2

·s

−1

suggesting a considerably enhanced fire safety. Furthermore

SEM images of the burning residues revealed that the PEC coating exhibited the dominant flame-retardant activity in condensed phase

via

the formation of compact phosphorus-rich char. In addition

the impact strength of the composite was improved

together with no obvious deterioration of flexural properties and glass transition temperature. Taking advantage of the features

the PEC-decorated carbon fibers and the relevant composites fabricated by the cost-effective and facile strategy would bring more chances for widespread applications.

关键词

Keywords

references

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