RESEARCH ARTICLE

Preparation of a multifunctional flame retardant epoxy resin containing phosphorus and nitrogen and study of its properties

Yijun Zhang

School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China

Contribution: Data curation (lead), Formal analysis (lead), Project administration (lead), Software (equal), Writing - original draft (lead)

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Dawei Pan,

Dawei Pan

School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China

Contribution: Investigation (lead), Supervision (equal), Visualization (lead), Writing - review & editing (lead)

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Changfan Chang,

Changfan Chang

School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China

Contribution: Data curation (equal), Investigation (equal), Methodology (lead), Validation (equal), Writing - review & editing (equal)

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Hua Liu,

Hua Liu

Department of Research and Development, Sino Polymer Co., Ltd of East China University of Science and Technology, Shanghai, China

Contribution: Conceptualization (lead), Methodology (lead), Resources (supporting), Supervision (lead), Writing - review & editing (lead)

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Zuozhen Liu,

Corresponding Author

Zuozhen Liu

[email protected]

orcid.org/0000-0001-6290-4476

School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China

Department of Research and Development, Sino Polymer Co., Ltd of East China University of Science and Technology, Shanghai, China

Shanghai Huayi resin Co., Ltd, Shanghai, China

Correspondence

Zuozhen Liu, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.

Email: [email protected]

Contribution: Conceptualization (lead), Funding acquisition (lead), Resources (lead), Validation (lead), Writing - review & editing (lead)

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Yijun Zhang,

Yijun Zhang

School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China

Contribution: Data curation (lead), Formal analysis (lead), Project administration (lead), Software (equal), Writing - original draft (lead)

Search for more papers by this author

Dawei Pan,

Dawei Pan

School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China

Contribution: Investigation (lead), Supervision (equal), Visualization (lead), Writing - review & editing (lead)

Search for more papers by this author

Changfan Chang,

Changfan Chang

School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China

Contribution: Data curation (equal), Investigation (equal), Methodology (lead), Validation (equal), Writing - review & editing (equal)

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Hua Liu,

Hua Liu

Department of Research and Development, Sino Polymer Co., Ltd of East China University of Science and Technology, Shanghai, China

Contribution: Conceptualization (lead), Methodology (lead), Resources (supporting), Supervision (lead), Writing - review & editing (lead)

Search for more papers by this author

Zuozhen Liu,

Corresponding Author

Zuozhen Liu

[email protected]

orcid.org/0000-0001-6290-4476

School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China

Department of Research and Development, Sino Polymer Co., Ltd of East China University of Science and Technology, Shanghai, China

Shanghai Huayi resin Co., Ltd, Shanghai, China

Correspondence

Zuozhen Liu, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China.

Email: [email protected]

Contribution: Conceptualization (lead), Funding acquisition (lead), Resources (lead), Validation (lead), Writing - review & editing (lead)

Search for more papers by this author

First published: 19 August 2022

https://doi.org/10.1002/app.53041

Citations: 3

Funding information: Project of Scientific Research Program of Shanghai Science and Technology Commission, Grant/Award Numbers: 20511107302, 19511106602

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Abstract

A highly reactive intrinsic epoxy flame retardant FREP was successfully synthesized via ring-opening reaction between DOPO and amino-tetrafunctional epoxy resin (AG-601), and the structure of the synthesized FREP was characterized by FTIR and MS. FREP was then introduced into the epoxy resin as an additive, aiming to improve fire safety. The flame-retardant properties and thermal stabilities of epoxy thermosets were investigated by limiting oxygen index (LOI), vertical burning test (UL94) and cone calorimetry (CONE). The results indicated that EP/FREP-4 thermoset passed UL94 V-0 rating with a LOI value of 34.6%, where the phosphorus content was 1.5 wt%. When compared with neat EP, the peak heat release rate (pk-HRR), total heat release (THR) and total smoke production (TSP) decreased by 63.1%, 42.6%, and 22.1%, respectively. Meanwhile, the lower av-EHC of EP/FREP thermosets indicated that FREP plays a significant role in gas-phase flame retardancy. Additionally, DMA analysis showed that FREP improved the crosslinking density of EP, which had little effect on the glass transition temperature (T_g). Thermogravimetric analysis (TGA), Py-GC/MS analysis, and SEM were used to investigate the flame retardant mechanism. Excellent flame retardancy was attributed to phosphorus and nitrogen's synergistic effect in the gas and condensed phases.

CONFLICT OF INTEREST

The authors declare no conflicts of interest.

Open Research

DATA AVAILABILITY STATEMENT

Research data are not shared.

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November 10, 2022

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Preparation of a multifunctional flame retardant epoxy resin containing phosphorus and nitrogen and study of its properties

Abstract

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Preparation of a multifunctional flame retardant epoxy resin containing phosphorus and nitrogen and study of its properties

Abstract

CONFLICT OF INTEREST

Open Research

DATA AVAILABILITY STATEMENT

REFERENCES

Citing Literature

References

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