Open Access

ARTICLE

Influence of Beta-Cyclodextrin Functionalized Tin Phenylphosphonate on the Thermal Stability and Flame Retardancy of Epoxy Composites

by Yongming Chen^1,2,#, Shuai Huang^1,#, Han Zhao¹, Ru Yang², Yining He¹, Tianyu Zhao¹, Yunlong Zhang¹, Qinghong Kong^1,*, Shasha Sun^3,*, Junhao Zhang³

1 School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China
2 Zhenjiang Electric Power Supply Company, State Grid Jiangsu Electric Power Co., Ltd., Zhenjiang, 212000, China
3 School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China

* Corresponding Authors: Qinghong Kong. Email: ; Shasha Sun. Email:
# They contributed equally to this work

(This article belongs to the Special Issue: Bio-based Halogen-free Flame Retardant Polymeric Materials)

Journal of Renewable Materials 2022, 10(12), 3119-3130. https://doi.org/10.32604/jrm.2022.019576

Received 08 October 2021; Accepted 20 December 2021; Issue published 14 July 2022

Abstract

To enhance the thermal stability and flame retardancy of epoxy resin (EP), beta-cyclodextrin (β-CD) is successfully introduced into the layered tin phenylphosphonate (SnPP), which is incorporated into EP matrix for preparing EP/β-CD@SnPP composites. The results indicate that the addition of β-CD@SnPP obviously improve the thermal stability and residual yield of EP composites at higher temperature. When the amount of β-CD@SnPP is only 4 wt%, EP/4β-CD@SnPP composites pass V-1 rating, and LOI value is up to 30.8%. Meanwhile, β- CD@SnPP effectively suppress the heat release and reduce the smoke production of EP/β-CD@SnPP composites in combustion, and the peak heat release rate (PHRR), total heat release (THR), smoke production rate (SPR) of EP/6β-CD@SnPP composites reduce by 28.4%, 33.0% and 44.8% by comparison with those of pure EP. The good flame retardancy and smoke suppression are ascribed to the synergistic effect of excellent carbon-forming capability and fire retardancy of β-CD@SnPP.

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Keywords

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