Synthesis of Phosphorus-Nitrogen Synergistic Flame Retardant Containing Pyrimidine Ring/Vanillin for Improving Flame Retardancy, Smoke Suppressing, and Mechanical Properties of Epoxy Resin
Hongbo Xiao
School of Intelligent Manufacturing, Wuhan Technical College of Communications, Wuhan, People's Republic of China
Contribution: Conceptualization (lead), Methodology (equal), Software (equal), Writing - original draft (lead), Writing - review & editing (equal)
Search for more papers by this authorXin Huang
School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, People's Republic of China
Contribution: Investigation (lead), Methodology (equal), Validation (lead), Writing - original draft (equal), Writing - review & editing (equal)
Search for more papers by this authorCorresponding Author
Wanyu Huang
School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, People's Republic of China
Correspondence:
Wanyu Huang ([email protected])
Contribution: Data curation (equal), Investigation (equal), Writing - review & editing (lead)
Search for more papers by this authorYufei Peng
School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, People's Republic of China
Contribution: Investigation (equal), Writing - review & editing (equal)
Search for more papers by this authorHongbo Xiao
School of Intelligent Manufacturing, Wuhan Technical College of Communications, Wuhan, People's Republic of China
Contribution: Conceptualization (lead), Methodology (equal), Software (equal), Writing - original draft (lead), Writing - review & editing (equal)
Search for more papers by this authorXin Huang
School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, People's Republic of China
Contribution: Investigation (lead), Methodology (equal), Validation (lead), Writing - original draft (equal), Writing - review & editing (equal)
Search for more papers by this authorCorresponding Author
Wanyu Huang
School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, People's Republic of China
Correspondence:
Wanyu Huang ([email protected])
Contribution: Data curation (equal), Investigation (equal), Writing - review & editing (lead)
Search for more papers by this authorYufei Peng
School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, People's Republic of China
Contribution: Investigation (equal), Writing - review & editing (equal)
Search for more papers by this authorFunding: The authors received no specific funding for this work.
ABSTRACT
In order to improve the flame retardancy, smoke suppressing, and mechanical properties of epoxy resins (EP), while pursuing low toxicity, environmental protection, and sustainable development, a reactive biobased flame retardant (TVD) containing P/N was synthesized by the one-pot method. The flame retardant, consisting of vanillin, 2,4,6-triaminopyrimidine, and DOPO as reactants, contained reactive groups in its structure and was introduced as a co-curing agent into the DDM-cured EP system. EP/TVD10 (at a phosphorus content of 0.58 wt%) achieved a UL-94 V-0 rating with an increased limit oxygen index (LOI) value of 34.2% (26.5% for pure EP), and the cone calorimetric test (CCT) results showed a decrease in total heat release (THR) values of 33.8% and a decrease in total smoke production rate (TSP) of 21.1% compared to pure EP. In addition, the introduction of TVD improved the mechanical properties of the epoxy resin, with an increase in flexural strength and modulus of 8.7% and 6.5% and a slight increase in impact toughness for EP/TVD10. These results indicate that TVD is a multifunctional and efficient bio-based flame retardant, which provides new ideas for the development of high-performance modified epoxy resin materials.
Open Research
Data Availability Statement
Research data are not shared.
Supporting Information
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