A new DOPO-derived P/N/S flame retardant: Synthesis and application in epoxy resin for imparting flame retardancy, enhanced mechanical performance and acid-alkali corrosion resistance

2026-06-20

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Yu Huang

Zhennan Wang

Guoping Zhu

朱

朱宗民 (Zongmin Zhu) *

Xuebao Lin *

DOI：10.1016/j.polymer.2026.130414

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• A novel DOPO-based P/N/S-containing flame retardant, TPD, was successfully synthesized. • Only 4 wt% TPD enabled EP to achieve a UL-94 V-0 rating with an LOI of 30.5%. • The pHRR, THR, TSP, and peak CO2 release of EP were reduced by 29.2%, 37.5%, 19.8%, and 23.0%, respectively. • The incorporation of 4 wt% TPD increased the tensile strength and impact strength of EP by 10.6% and 76.4%, respectively. • TPD endowed EP with UV-shielding capability, improved acid/alkali resistance, and enhanced electrical insulation performance.

A new DOPO-derived P/N/S flame retardant: Synthesis and application in epoxy resin for imparting flame retardancy, enhanced mechanical performance and acid-alkali corrosion resistance

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