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Highly effective flame‐retarded polyester diol with synergistic effects for waterborne polyurethane application
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2019-09-04 , DOI: 10.1002/app.48444 Shuang Wang 1 , Xiaosheng Du 1 , Xihan Fu 1 , Zongliang Du 1 , Haibo Wang 1 , Xu Cheng 1
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2019-09-04 , DOI: 10.1002/app.48444 Shuang Wang 1 , Xiaosheng Du 1 , Xihan Fu 1 , Zongliang Du 1 , Haibo Wang 1 , Xu Cheng 1
Affiliation
In this article, a novel bi‐reactive flame retardant (FRD) was successfully synthesized for waterborne polyurethane (WPU). The chemical structures of FRD were characterized by Fourier‐transform infrared spectra and 1H and 31P nuclear magnetic resonance. Then, the FRD was incorporated into polyurethane backbone to prepare a series of flame‐retarded WPU (FRWPU). The flammability characteristics of FRWPU were measured by limited oxygen index (LOI), UL‐94, and cone calorimeter (CCT) tests. The FRPWU‐7 had a high LOI value of 30.5% with UL94 V‐0 rating. Moreover, the CCT values indicated that FRD induced the gaseous phase quenching effect of phosphorus‐containing free radicals derived from the decomposed phosphaphenanthrene group on the gas‐phase flame retardancy. Scanning electron micrographs and Raman spectra exhibited that FRD promoted the charring formation of phosphorus‐rich char layer with graphitized surface and honeycomb‐like intumescent structure in WPU matrix during burning. This study provides a new way to design a novel reactive P–P flame retardant consisted of the phosphaphenanthrene group and intumescent flame retardant for WPU application. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48444.
中文翻译:
具有协同作用的高效阻燃聚酯二醇,可用于水性聚氨酯
本文成功地为水性聚氨酯(WPU)合成了一种新型的双反应型阻燃剂(FRD)。FRD的化学结构通过傅立叶变换红外光谱和1 H和31表征P核磁共振。然后,将FRD掺入聚氨酯骨架中,以制备一系列阻燃WPU(FRWPU)。FRWPU的可燃性通过极限氧指数(LOI),UL-94和锥形量热仪(CCT)测试来测量。FRPWU-7的LOI值高达30.5%,UL94 V-0等级。此外,CCT值表明,FRD诱导了由分解的磷菲基衍生的含磷自由基的气相猝灭作用,对气相阻燃性的影响。扫描电子显微镜和拉曼光谱显示,在燃烧过程中,FRD促进了WPU基体中具有石墨化表面和蜂窝状膨胀结构的富磷炭层的炭化。这项研究提供了一种设计新型反应性P–P阻燃剂的新方法,该阻燃剂由磷菲基和膨胀型阻燃剂组成,用于WPU。分级为4 +©2019 Wiley Periodicals,Inc.J.Appl。Polym。科学2020,137,48444。
更新日期:2019-12-02
中文翻译:
具有协同作用的高效阻燃聚酯二醇,可用于水性聚氨酯
本文成功地为水性聚氨酯(WPU)合成了一种新型的双反应型阻燃剂(FRD)。FRD的化学结构通过傅立叶变换红外光谱和1 H和31表征P核磁共振。然后,将FRD掺入聚氨酯骨架中,以制备一系列阻燃WPU(FRWPU)。FRWPU的可燃性通过极限氧指数(LOI),UL-94和锥形量热仪(CCT)测试来测量。FRPWU-7的LOI值高达30.5%,UL94 V-0等级。此外,CCT值表明,FRD诱导了由分解的磷菲基衍生的含磷自由基的气相猝灭作用,对气相阻燃性的影响。扫描电子显微镜和拉曼光谱显示,在燃烧过程中,FRD促进了WPU基体中具有石墨化表面和蜂窝状膨胀结构的富磷炭层的炭化。这项研究提供了一种设计新型反应性P–P阻燃剂的新方法,该阻燃剂由磷菲基和膨胀型阻燃剂组成,用于WPU。分级为4 +©2019 Wiley Periodicals,Inc.J.Appl。Polym。科学2020,137,48444。