<italic style="font-style: italic">In situ</italic> Loaded Nanoscale Red Phosphorus on Mesoporous Silica for Simultaneously Improved Flame Retardancy and Toughness of Epoxy Composites

Di Zhang; Meng-Di Shao; Xin Wang; Zhou Gui

doi:10.1007/s10118-026-3553-5

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In situ Loaded Nanoscale Red Phosphorus on Mesoporous Silica for Simultaneously Improved Flame Retardancy and Toughness of Epoxy Composites

RESEARCH ARTICLE | Updated：2026-02-13

- In situ Loaded Nanoscale Red Phosphorus on Mesoporous Silica for Simultaneously Improved Flame Retardancy and Toughness of Epoxy Composites
- In situ Loaded Nanoscale Red Phosphorus on Mesoporous Silica for Simultaneously Improved Flame Retardancy and Toughness of Epoxy Composites
- Chinese Journal of Polymer Science 2026年44卷第3期页码：719-732
- Affiliations：
  
  State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China
- Author bio：
  
  wxcmx@ustc.edu.cn (X.W.)
  zgui@ustc.edu.cn (Z.G.)
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (Nos. 22175167 and 22375195) and the Science Fund for Distinguished Young Scholars of Anhui Province (No. 2308085J05). This work was also partially carried out at the Instruments Center for Physical Science, University of Science and Technology of China, and partially performed using the services from Scientific Compass (www.shiyanjia.com).;Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-026-3553-5.
- DOI：10.1007/s10118-026-3553-5
  中图分类号：
- 收稿：2025-12-05，
  
  修回：2025-12-29，
  
  录用：2026-01-16，
  
  网络首发：2026-02-09，
  
  纸质出版：2026-03-15
- Accepted：
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Zhang, D.; Shao, M. D.; Wang, X.; Gui, Z. In situ loaded nanoscale red phosphorus on mesoporous silica for simultaneously improved flame retardancy and toughness of epoxy composites. Chinese J. Polym. Sci. 2026, 44, 719–732

Di Zhang, Meng-Di Shao, Xin Wang, et al. In situ Loaded Nanoscale Red Phosphorus on Mesoporous Silica for Simultaneously Improved Flame Retardancy and Toughness of Epoxy Composites[J]. Chinese Journal of Polymer Science, 2026, 44(3): 719-732. DOI: 10.1007/s10118-026-3553-5.
Zhang, D.; Shao, M. D.; Wang, X.; Gui, Z. In situ loaded nanoscale red phosphorus on mesoporous silica for simultaneously improved flame retardancy and toughness of epoxy composites. Chinese J. Polym. Sci. 2026, 44, 719–732 DOI： 10.1007/s10118-026-3553-5.

Di Zhang, Meng-Di Shao, Xin Wang, et al. In situ Loaded Nanoscale Red Phosphorus on Mesoporous Silica for Simultaneously Improved Flame Retardancy and Toughness of Epoxy Composites[J]. Chinese Journal of Polymer Science, 2026, 44(3): 719-732. DOI: 10.1007/s10118-026-3553-5. DOI：

摘要

A nanohybrid flame retardant (NRP@MSN) was fabricated by

in situ

loading nanoscale red phosphorus onto me

soporous silica. Incorporated into epoxy

it simultaneously enhanced fire safety (52.8% lower PHRR) and impact toughness (165% higher char yield)

demonstrating a synergistic nano-barrier and char-forming mechanism.

Abstract

Nanoscale red phosphorus (NRP) was synthesized

via

a phosphorus-amine dissolution method and immobilized onto mesoporous silica nanospheres (MSNs) to obtain hybrid NRP@MSN particles with improved dispersion stability. Epoxy resin (EP) composites containing 2 wt% fillers were prepared to evaluate their thermal and flame-retardant behaviors. Compared with EP

the NRP@MSNs/EP composite significantly enhanced fire safety

resulting in a 52.8% reduction in the peak heat release rate

a 13.9% decrease in total smoke production

and a 165% increase in char yield. Mechanical testing revealed a notable toughening effect under impact loading. The improved flame retardancy originates from the combined nano-barrier effect of MSNs and the catalytic charring and radical-quenching functions of NRP. This work demonstrates an efficient strategy for stabilizing NRP and highlights its strong potential as an environmentally friendly flame retardant for EP systems.

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In situ Loaded Nanoscale Red Phosphorus on Mesoporous Silica for Simultaneously Improved Flame Retardancy and Toughness of Epoxy Composites

In situ Loaded Nanoscale Red Phosphorus on Mesoporous Silica for Simultaneously Improved Flame Retardancy and Toughness of Epoxy Composites

DOI：10.1007/s10118-026-3553-5

摘要

Abstract

关键词

Keywords

references