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：2023-02-21

- 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, Pages: 1-14(2022)
- 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：
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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. https://doi.org/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/OL]. Chinese Journal of Polymer Science 411-14(2022)
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. https://doi.org/10.1007/s10118-023-2932-4 DOI：

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/OL]. Chinese Journal of Polymer Science 411-14(2022) DOI： 10.1007/s10118-023-2932-4.

摘要

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,3,) and impact strength (36.5 kJ/m,2,), much higher than that of neat DGEBA (49.7 MPa, 2.05 MJ/m,3, and 20.9 kJ/m,2,). 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.

关键词

Keywords

Epoxy resinMagnololPhosphine oxideToughnessFlame retardant

references

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