Containing P/N/B/S multi-element flame retardant epoxy resin: Low smoke, low dielectric strength, UV shielding

IF 4.5 3区工程技术 Q1 CHEMISTRY, APPLIED

Reactive & Functional Polymers Pub Date : 2025-02-27 DOI:10.1016/j.reactfunctpolym.2025.106226

Haopeng Cai , Wanyu Huang , Yufei Peng , Wenbo Wang , Lanlan Sun

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Abstract

With the development of rail transit in the direction of high-speed and safety, the multifunctional epoxy resin (EP) featuring flame resistance, low smoke emissions, low dielectric constant and Superior UV shielding has excellent development prospects. This study introduced a multifunctional new reactive flame retardant FSD, which, by incorporating P/N/S/B, significantly modified epoxy resin and achieved multi-functional upgrading of the resin. The results showed that the limiting oxygen index (LOI) of the modified epoxy resin EP/FSD7.5 was enhanced to 33.2 %, and there was a notable enhancement in the material's fire safety, attributed to a 45.03 % reduction in the peak heat release rate (PHRR) and a 44 % decrease in total smoke production (TSP). In addition, the introduction of FSD gave EP excellent UV shielding properties and optimized its dielectric properties without sacrificing mechanical properties. In particular, in the smoke density test, the specific optical density of the fourth minute (D_S (4)) and Cumulative smoke concentration in the first four minutes (VOF₄) values for the EP/FSD7.5 composite successfully attained the HL1 classification under the EN45545–2 regulations. The research outcomes offer an innovative approach to advancing rail transit materials, with significant implications and practical application value.

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来源期刊

Reactive & Functional Polymers 工程技术-高分子科学

CiteScore

8.90

自引率

5.90%

发文量

259

审稿时长

27 days

期刊介绍： Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers. Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.