Synthesis of Bio-based Epoxy Containing Phosphine Oxide as a Reactive Additive Toward Highly Toughened and Fire-retarded Epoxy Resins

Chunxiang Wei; Tianyu Gao; Yu Xu; Wenjie Yang; Guangjian Dai; Ruiting Li; SanE Zhu; Richard K. K. Yuen; Wei Yang; Hongdian Lu

doi:10.1007/s10118-023-2932-4

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Synthesis of Bio-based Epoxy Containing Phosphine Oxide as a Reactive Additive Toward Highly Toughened and Fire-retarded Epoxy Resins

RESEARCH ARTICLE | Updated：2023-11-10

- Synthesis of Bio-based Epoxy Containing Phosphine Oxide as a Reactive Additive Toward Highly Toughened and Fire-retarded Epoxy Resins
- Chinese Journal of Polymer Science Vol. 41, Issue 11, Pages: 1733-1746(2023)
- Affiliations：
  
  a.School of Energy, Materials and Chemical Engineering, Hefei University, Hefei 230601, China
  b.Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, U. K.
  c.Department of Architecture and Civil Engineering, City University of Hong Kong, Hong Kong 999077, China
- Author bio：
  
  yangwei@hfuu.edu.cn (W.Y.)
  luhdo@hfuu.edu.cn (H.L.)
- Funds：
- DOI：10.1007/s10118-023-2932-4
  CLC：
- Received：10 October 2022，
  
  Revised：2022-12-7，
  
  Accepted：19 December 2022，
  
  Online First：21 February 2023，
  
  Published：01 November 2023
- Accepted：
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Wei, C.; Gao, T.; Xu, Y.; Yang, W.; Dai, G.; Li, R.; Zhu, S.; Yuen, R. K. K.; Yang, W.; Lu, H. Synthesis of bio-based epoxy containing phosphine oxide as a reactive additive toward highly toughened and fire-retarded epoxy resins. Chinese J. Polym. Sci. 2023, 41, 1733–1746

Chunxiang Wei, Tianyu Gao, Yu Xu, et al. Synthesis of Bio-based Epoxy Containing Phosphine Oxide as a Reactive Additive Toward Highly Toughened and Fire-retarded Epoxy Resins[J]. Chinese Journal of Polymer Science, 2023, 41(11): 1733-1746.
Wei, C.; Gao, T.; Xu, Y.; Yang, W.; Dai, G.; Li, R.; Zhu, S.; Yuen, R. K. K.; Yang, W.; Lu, H. Synthesis of bio-based epoxy containing phosphine oxide as a reactive additive toward highly toughened and fire-retarded epoxy resins. Chinese J. Polym. Sci. 2023, 41, 1733–1746 DOI： 10.1007/s10118-023-2932-4.

Chunxiang Wei, Tianyu Gao, Yu Xu, et al. Synthesis of Bio-based Epoxy Containing Phosphine Oxide as a Reactive Additive Toward Highly Toughened and Fire-retarded Epoxy Resins[J]. Chinese Journal of Polymer Science, 2023, 41(11): 1733-1746. DOI： 10.1007/s10118-023-2932-4.

摘要

DGEMP was synthesized via substitution and epoxidation from magnolol

which was used as a reactive additive for traditional DGEBA epoxy resins. DGEBA/DGEMP showed excellent mechanical and flame retardant performance.

Abstract

The integration of high mechanical toughness

impact strength as well as excellent flame-retardant properties toward epoxy resins (EPs) have always been a dilemma. The inadequate overall performance of EPs severely restricts their sustainable utilization in engineering aspects over long-term. Herein

a new bio-based agent (diglycidyl ether of magnolol phosphine oxide

referred as DGEMP) derived from magnolol (classified as lignan)

extracted from natural plants Magnolia officinalis

was successfully synthesized and further employed as a flame-retardant reactive additive to diglycidyl ether of bisphenol A (DGEBA). As demonstration

the composite resin

DGEBA/15DGEMP (15 wt% DGEMP)

achieved an Underwriters Laboratories-94 V-0 rating with a high limiting oxygen index (LOI) value (41.5%). In cone calorimeter tests

it showed that heat release and smoke production were effectively inhibited during combustion

wherein the peak heat release rate (PHRR) value of DGEBA/15DGEMP was reduced by 50% compared to neat DGEBA. Additionally

it exhibited a superior tensile strength (82.8 MPa)

toughness (5.11 MJ/m

) and impact strength (36.5 kJ/m

)

much higher than that of neat DGEBA (49.7 MPa

2.05 MJ/m

and 20.9 kJ/m

). Thus

it is highly anticipated that DGEMP imparts significantly improved mechanical and fire-retarded properties to conventional EPs

which holds a great potential to address the pressing challenges in EP thermosets industry.

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references

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