Core-shell engineered boehmite-derived organic-inorganic hybrid flame retardant for epoxy resins: synergistically enhanced fire safety and mechanical integrity

IF 6.3 2区化学 Q1 POLYMER SCIENCE

Polymer Degradation and Stability Pub Date : 2025-04-04 DOI:10.1016/j.polymdegradstab.2025.111367

Shu-Gen Wu, Chuan Liu, Zhen Qin, Dong-Yi He, Ze-Kun Wang, Wen-long Xie, Yu-Zhong Wang, Li Chen

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引用次数: 0

Abstract

Conventional phosphorus-containing flame retardants often compromise the mechanical integrity of epoxy resins (EP), presenting a critical challenge for high-performance applications. This study addresses this dilemma through an innovative interfacial engineering approach, developing a core-shell structured organic-inorganic hybrid aluminum phenylphosphinate (PADP@BM) via chemical modification of boehmite nanoparticles with phenylphosphinic acid. Structural characterization validated the successful anchoring of BM nanoparticles onto PADP microrods, forming a unique organic-inorganic heterostructure. With only 10 wt% loading, the EP composite achieved a UL-94 V-0 rating and a remarkably high LOI value up to 37.0 %, while exhibiting 39.9 % and 31.5 % reductions in the peak heat release rate (PHRR) and total heat release (THR), respectively. Remarkably, the impact strength of EP/5PADP@BM increased by 43.4 % to 17.5 kJ/m², and the composites retained comparable strength and toughness to pure EP even in the face of a high loading of 10 wt% PADP@BM. This work provides a paradigm-shifting strategy to reconcile the long-standing conflict between flame retardancy and mechanical robustness in polymer composites.

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来源期刊

Polymer Degradation and Stability 化学-高分子科学

CiteScore

10.10

自引率

10.20%

发文量

325

审稿时长

23 days

期刊介绍： Polymer Degradation and Stability deals with the degradation reactions and their control which are a major preoccupation of practitioners of the many and diverse aspects of modern polymer technology. Deteriorative reactions occur during processing, when polymers are subjected to heat, oxygen and mechanical stress, and during the useful life of the materials when oxygen and sunlight are the most important degradative agencies. In more specialised applications, degradation may be induced by high energy radiation, ozone, atmospheric pollutants, mechanical stress, biological action, hydrolysis and many other influences. The mechanisms of these reactions and stabilisation processes must be understood if the technology and application of polymers are to continue to advance. The reporting of investigations of this kind is therefore a major function of this journal. However there are also new developments in polymer technology in which degradation processes find positive applications. For example, photodegradable plastics are now available, the recycling of polymeric products will become increasingly important, degradation and combustion studies are involved in the definition of the fire hazards which are associated with polymeric materials and the microelectronics industry is vitally dependent upon polymer degradation in the manufacture of its circuitry. Polymer properties may also be improved by processes like curing and grafting, the chemistry of which can be closely related to that which causes physical deterioration in other circumstances.