Work

The synthesis of biphenyl ether/vanillin‐based flame retardants for enhancing both the flame retardant properties and mechanical performance of epoxy resin

Year: 2024

Type: article

Abstract: Imparting good flame retardancy and mechanical properties to epoxy resin (EP), while pursuing the sustainable and safe application of EP, we synthesized a novel reactive phosphorus/nitrogen flame retardant for biomass through nucleophilic addition reaction, which contains flexible ether bonds and rigid aromatic ring structure (DVD). Owing to the cooperative effect of aryl ether diamine, phosphorus phenanthrene, and biomass vanillin, the DVD exhibited excellent flame retardancy. EP/DVD‐1 (0.4 wt% phosphorus content) achieved UL‐94 V‐0 rating, with an improvement in limiting oxygen index value from 26.5% (pure EP) to 32.5%. In the CCT, the modified DVD EP showed a 44.5% reduction in peak peak of heat release rate (PHRR) and a 38.0% reduction in total heat release compared to pure EPs. And flame retardant epoxy resin (FREP) still had good transparency after the addition of DVD, which indicated the nice compatibility between DVD andEP. What was noteworthiness was that at high levels of addition, the mechanical properties of modified EP for DVD was still improved compared to pure EP. These results demonstrate that DVD is an excellent and multifunctional bio‐based flame retardant with broad application prospects in the field of EP material modification.

Source: Journal of Applied Polymer Science

DOI: 10.1002/app.55281

Authors: Xin Huang, Haopeng Cai, Lihua Gao, Yangwen Mao, Wanyu Huang

Institutions: Wuhan University of Technology, China North Industries Group Corporation (China)

Language: English

Topic: Flame retardant materials and properties

Subfield: Polymers and Plastics

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funder: National Key Research and Development Program of China

Award: G1735799439