Synthesis and Characterization of a New Copolymer Consisting of Polyamide 1210 and Reactive Phosphorus−Nitrogen Flame-Retardant,Macromolecular Rapid Communications

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Synthesis and Characterization of a New Copolymer Consisting of Polyamide 1210 and Reactive Phosphorus−Nitrogen Flame-Retardant
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2022-11-20 , DOI: 10.1002/marc.202200644
Lizheng Qin ₁ , Yang Zhou ₂ , Shun Gong ₂ , Shikun Zhao ₂ , Zhiwen Cao ₂ , Jianping Deng ₁ , Kai Pan ₂

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The thermal stability and reactivity of organophosphorus flame-retardants play a critical role in synthesizing copolymerized flame-retardant polyamides. Herein, this work successfully synthesizes a flame-retardant CEPPA-DDA salt (CDS) with both good thermal stability and high reactivity by reacting 2-carboxyethyl phenyl phosphonic acid (CEPPA) with 1,12-dodecanediamine (DDA). Flame-retardant polyamide 1210 (FRPA) is further prepared by copolymerizing the CDS, DDA, and sebacic acid (SEA). The test results show that the introduction of CDS can significantly improve the flame-retardant properties of FRPA. Specifically, the flame-retardant polyamide 1210 (FRPA-7) with 7 wt% CDS addition can reach V-0 grade according to UL-94 standard, accompanying limiting oxygen index value of 30.2% and tensile strength of 38.62 MPa. Compared with pure polyamide 1210, the peak heat release rate and total heat release rate of FRPA-7 reduce by 24.11% and 9.40%, respectively. This study provides a simple strategy to prepare flame-retardant polyamides with high flame retardancy and good mechanical properties, which are expected to show great potentials in future industrial applications.

中文翻译：

由聚酰胺 1210 和活性磷-氮阻燃剂组成的新型共聚物的合成与表征

有机磷阻燃剂的热稳定性和反应活性在合成共聚阻燃聚酰胺中起着至关重要的作用。在此，该工作通过使 2-羧乙基苯基膦酸 (CEPPA) 与 1,12-十二烷二胺 (DDA) 反应，成功合成了具有良好热稳定性和高反应活性的阻燃 CEPPA-DDA 盐 (CDS)。阻燃聚酰胺 1210 (FRPA) 由 CDS、DDA 和癸二酸 (SEA) 共聚进一步制备。试验结果表明，CDS的引入可以显着提高FRPA的阻燃性能。具体而言，CDS添加量为7 wt%的阻燃聚酰胺1210（FRPA-7）可达到UL-94标准的V-0级，极限氧指数值为30.2%，拉伸强度为38.62 MPa。与纯聚酰胺1210相比，FRPA-7的峰值放热率和总放热率分别降低了24.11%和9.40%。该研究为制备具有高阻燃性和良好机械性能的阻燃聚酰胺提供了一种简单的策略，有望在未来的工业应用中展现出巨大的潜力。

更新日期：2022-11-20

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