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IF 6.3 2区化学 Q1 POLYMER SCIENCE

Polymer Degradation and Stability Pub Date : 2025-04-02 DOI:10.1016/j.polymdegradstab.2025.111363

Rende Qin, Wenxing Yuan, Jiajun Fu, Zixin Zhang, Yongjie Yuan, Hailiang Zhang

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引用次数: 0

摘要

聚酰胺 6（PA6）是世界上应用最广泛的聚合物材料之一，随着其应用领域的不断扩大，需要增强其阻燃性能。本文以α-氨基-ε-己内酰胺（ACL）、9,10-二氢-9-氧杂-10-磷杂菲-10-氧化物（DOPO）和苯甲醛为反应物，通过两步卡巴尼克-菲尔兹反应合成了一种基于功能化α-氨基-ε-己内酰胺的反应型阻燃剂 P-Ph-N ACL。作为一种反应型阻燃剂，P-Ph-N ACL 具有优异的阻燃性能、热稳定性和反应活性。以ε-己内酰胺（CPL）和 P-Ph-N ACL 为原料，通过水解共缩聚反应合成了一系列共聚阻燃聚酰胺（P-Ph-N PA）。随着 P-Ph-N ACL 用量的增加，P-Ph-N PA 的阻燃性能显著提高。当添加 8 wt% 的 P-Ph-N ACL 时，P-Ph-N PA-8 的极限氧指数（LOI）从纯 PA6 的 21% 提高到 35%。在垂直燃烧测试中，P-Ph-N PA-8 在点燃后 7 秒内自熄，达到了 UL94 V-0 等级。气相阻燃和凝聚相阻燃两种作用模式的协同效应共同促成了 P-Ph-N PA 阻燃性能的增强。此外，P-Ph-N PA-8 还保持了相对较高的分子量和结晶度，以及值得称赞的热稳定性和机械性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

A reactive flame retardant based on functionalized α-amino-ε-caprolactam with a P-C-N bond structure for copolymerized flame-retardant polyamide

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A reactive flame retardant based on functionalized α-amino-ε-caprolactam with a P-C-N bond structure for copolymerized flame-retardant polyamide

As one of the most widely used polymer materials in the world, polyamide 6 (PA6) requires enhanced flame retardancy due to its expanding applications. Here, a reactive flame retardant, P-Ph-N ACL, based on functionalized α-amino-ε-caprolactam is synthesized through a two-step Kabachnik-Fields reaction, using α-amino-ε-caprolactam (ACL), 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO), and benzaldehyde as the reactants. As a reactive flame retardant, P-Ph-N ACL exhibits excellent flame-retardant performance, thermal stability, and reactivity. A series of copolymerized flame-retardant polyamide (P-Ph-N PA) are synthesized via hydrolytic copolycondensation using ε-caprolactam (CPL) and P-Ph-N ACL as raw materials. As the amount of the P-Ph-N ACL increases, the flame-retardant performance of P-Ph-N PA improves significantly. When 8 wt% of P-Ph-N ACL is added, the limiting oxygen index (LOI) of P-Ph-N PA-8 increases from 21% for pure PA6 to 35%. In vertical combustion tests, P-Ph-N PA-8 self-extinguishes within 7 s after ignition, achieving the UL94 V-0 rating. The cooperative effects of gas-phase and condensed-phase flame-retardant mode of actions collectively contribute to the enhanced flame retardancy of P-Ph-N PA. Furthermore, P-Ph-N PA-8 maintains a relatively high molecular weight and crystallinity, along with commendable thermal stability and 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.