PET及其长丝用磷功能化希夫碱阻燃剂：增强阻燃性、防滴性和强度

IF 7.4 2区化学 Q1 POLYMER SCIENCE

Polymer Degradation and Stability Pub Date : 2025-09-24 DOI:10.1016/j.polymdegradstab.2025.111692

Zhenhui Bai , Rong Zhou , Qun Wang , Mao Li , Wenjun Yan , Qiaoli Xu , Hengshu Zhou , Xiaoqiang Li , Ruchao Yuan , Jinping Guan , Faxue Li

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引用次数: 0

摘要

高分子材料在高温下增强成焦能力和自由基猝灭作用的结合是提高其阻燃和防滴性能的关键。研究了一种聚对苯二甲酸乙酯（PET）专用的磷功能化希夫碱阻燃剂（HSCP）。值得注意的是，仅加入4wt %的HSCP就能有效提高PET的防滴性能。含有8wt % HSCP的PET复合材料（PET/HSCP8）达到了30.0%的极限氧指数，具有完全的防滴性能，在垂直燃烧中达到了V-0等级。此外，与未改性的PET相比，PET/HSCP8的总烟产量显著降低16.4%。提高PET/HSCP的防火安全性是通过HSCP的双相机制实现的，该机制结合了成炭效应和淬火效应。重要的是，PET/HSCP8复合材料保持了良好的界面相容性，使得通过熔融纺丝成功制造长丝，同时表现出增强的防火安全性和保留的机械性能。

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Phosphorus-functionalized Schiff base flame retardant for PET and its filaments: enhancing fire resistance, anti-dripping, and strength

The combination of enhanced char formation capacity and radical quenching effect in polymer materials at elevated temperatures is crucial for improving flame inhibition and anti-dripping performance. This study developed a phosphorus (P)-functionalized Schiff base flame retardant (HSCP) specifically for poly(ethylene terephthalate) (PET). Notably, incorporation of merely 4 wt% of HSCP effectively enhanced the anti-dripping performance of PET. The PET composites containing 8 wt% of HSCP (PET/HSCP8) achieved a limiting oxygen index of 30.0 % with complete anti-dripping performance, attaining a V-0 rating in vertical burning. Furthermore, PET/HSCP8 exhibited a remarkable 16.4 % reduction in total smoke production compared to unmodified PET. The enhanced fire safety of PET/HSCP was achieved through the dual-phase mechanism of HSCP, which combines the char-forming effect with the quenching effect. Importantly, the PET/HSCP8 composites maintain excellent interfacial compatibility, enabling the successful fabrication of filaments through melt-spinning that simultaneously exhibit enhanced fire safety and preserved mechanical properties.

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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.