A double-click strategy for the synthesis of P and N-containing hydrolytically stable reactive flame retardant for photocurable networks,Journal of Applied Polymer Science

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A double-click strategy for the synthesis of P and N-containing hydrolytically stable reactive flame retardant for photocurable networks
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2022-07-22 , DOI: 10.1002/app.52837
Ozge Ozukanar ₁ , Emrah Cakmakci ₂ , Ozgun Daglar ₁ , Hakan Durmaz ₁ , Volkan Kumbaraci ₁

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The use of modern chemical routes and the development of innovative material designs bring smart solutions to the problems in materials science and open up new horizons for future research. In this work, we utilized from two click reactions to prepare a P and N-containing reactive flame retardant. The para-fluoro groups of bis(pentafluorophenyl)phenyl phosphine oxide were converted to azides and then the obtained compound was reacted with propargyl acrylate via copper-catalyzed azide-alkyne cycloaddition reaction. The effect of the synthesized monomer (10%, 20%, and 30%) on the mechanical, thermal, and flame retardancy properties of an aliphatic polyurethane acrylate was investigated. The newly synthesized monomer led to a slight decrease in double bond conversion percentages, an increase in tensile strength of the photocured samples, and a decrease in the elongation at break values. The glass transition temperatures increased with the increasing amount of the flame retardant monomer as well as the limiting oxygen index (LOI) values. When the flame retardant ratio was 30% in the formulations, almost a 25% enhancement was realized in the LOI values.

中文翻译：

用于光固化网络的含 P 和 N 水解稳定反应型阻燃剂的双击策略合成

现代化学路线的使用和创新材料设计的发展为材料科学中的问题带来了智能的解决方案，并为未来的研究开辟了新的视野。在这项工作中，我们利用两次点击反应制备了一种含 P 和 N 的反应性阻燃剂。双（五氟苯基）苯基氧化膦的对氟基团转化为叠氮化物，然后通过铜催化的叠氮化物-炔烃环加成反应与丙烯酸炔丙酯反应。研究了合成单体（10%、20% 和 30%）对脂肪族聚氨酯丙烯酸酯的机械、热和阻燃性能的影响。新合成的单体导致双键转化率略有下降，光固化样品的拉伸强度增加，和断裂伸长率值的降低。玻璃化转变温度随着阻燃单体用量的增加以及极限氧指数（LOI）值的增加而增加。当配方中的阻燃剂比例为 30% 时，LOI 值几乎提高了 25%。

更新日期：2022-07-22

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