...
首页> 外文期刊>Cellulose >Synthesis of an effective halogen-free flame retardant rich in phosphorus and nitrogen for lyocell fabric
【24h】

Synthesis of an effective halogen-free flame retardant rich in phosphorus and nitrogen for lyocell fabric

机译:富含磷和氮的有效卤素阻燃剂的合成Lyocell织物

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

A novel effective halogen-free flame retardant (FR) rich in phosphorus (P) and nitrogen (N) was synthesized via Mannich and esterification reaction of ethanolamine, glyoxal, phosphoric acid and urea, and used for the preparation of durable flame retardant lyocell fabric (FR-lyocell). Its chemical structure was characterized by Fourier transform infrared spectra, H-1 and P-31 nuclear magnetic resonance spectra. Inductively coupled plasma emission spectrometry and elemental analysis were conducted to test the phosphorous, carbon and nitrogen contents. The results confirmed that the FR was successfully synthesized and grafted on the lyocell fabric via firm P-O-C covalent bonds. The limiting oxygen index of the FR-lyocell treated with 30 wt% flame retardant finishing solution is 44.6%, demonstrating high efficiency flame retardancy. The thermo-gravimetric analysis indicated that FR-lyocell degraded preferentially than that of the control sample and the char residue was 38.8 wt% at 800 degrees C in N-2 atmosphere. In addition, the cone calorimeter test revealed that FR-lyocell could not be ignited and the peak of heat release rate was much lower than that of original specimen. Furthermore, the char residue of FR-lyocell is compact and the I-D/I-G value is 0.771, exhibiting a super degree of carbonization. Moreover, TG-IR result revealed that FR played dual flame-retardant effect in the gaseous and condensed phases. The flame retardant finishing has a negligible impact on the mechanical properties of the fibers. In summary, FR-lyocell exhibits excellent flame retardancy and superior char forming capability, which is suitable for the preparation of flame retardant lyocell fibers.
机译:以乙醇胺、乙二醛、磷酸和尿素为原料,通过曼尼希反应和酯化反应合成了一种新型高效的富磷、富氮无卤阻燃剂(FR),并用于制备耐久阻燃lyocell织物(FR lyocell)。用傅里叶变换红外光谱、H-1和P-31核磁共振谱对其化学结构进行了表征。采用电感耦合等离子体发射光谱法和元素分析法测定了样品中的磷、碳和氮含量。结果证实,FR已成功合成并通过牢固的P-O-C共价键接枝到lyocell织物上。经30 wt%阻燃整理液处理的FR lyocell的极限氧指数为44.6%,显示出高效阻燃性。热重分析表明,FR-lyocell比对照样品更容易降解,在800℃的N-2气氛中,残炭为38.8 wt%。此外,锥形量热计测试表明,FR lyocell无法点燃,热释放速率峰值远低于原始试样。此外,FR lyocell的残炭致密,I-D/I-G值为0.771,表现出超碳化程度。TG-IR结果表明,阻燃剂FR在气相和凝聚相中起到双重阻燃作用。阻燃整理对纤维力学性能的影响可以忽略不计。总之,FR lyocell具有优异的阻燃性能和成炭能力,适用于阻燃lyocell纤维的制备。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号