通过简单改性苯基膦酸构建高阻燃性聚酯-棉织物

IF 9.9 Q1 MATERIALS SCIENCE, COMPOSITES
Li-Yao Zhang, Wan-Meng Song, Yun Liu
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引用次数: 0

摘要

涤棉织物(PTCO)性能优良,在日常生活中无处不在,但其严重的易燃性给人们的生活带来了极大的安全隐患。本研究以苯基膦酸(PPOA)和尿素为原料,制备了一种名为 POU 的阻燃剂。采用垫干固化技术制备了 PTCO/POU,并与 PTCO/PPOA 进行了性能对比,发现了许多有趣的现象。基于 P/N 协同作用带来的气相和凝聚相阻燃机理,PTCO/POU 的阻燃性能比 PTCO/PPOA 更好。受损长度为 6.7 厘米,极限氧指数(LOI)值为 30.1%。燃烧后的残炭完整而致密,石墨化程度较高。热重分析表明,POU 能显著降低 PTCO 的 Rmax,提高其在高温区的热稳定性。CCT 结果表明,PTCO/POU 的着火时间最长,火势增长指数最小,这对降低火灾风险具有重要意义。TG-FTIR 结果表明,PTCO/POU 的挥发物大大减少,在燃烧过程中产生的 NH3 稀释了可燃气体的浓度。此外,PTCO/POU 的白度性能也优于 PTCO/PPOA。这项工作以简单的方法大大提高了 PTCO 的阻燃性,拓展了其应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Simple modification of phenylphosphonic acid to construct polyester-cotton fabrics with high flame retardancy

Polyester-cotton fabrics (PTCO) have excellent properties and are ubiquitous in daily life, but their serious flammability brings great safety hazards to people's lives. This study used phenylphosphonic acid (PPOA) and urea as raw materials to prepare a flame retardant named POU. PTCO/POU was prepared by the pad-dry-cure technique, and the performance was compared with that of PTCO/PPOA, revealing many interesting phenomena. Based on the gas phase and condensed phase flame-retardant mechanism brought by P/N synergy, PTCO/POU had better flame retardancy than PTCO/PPOA did. The damaged length was 6.7 cm, and the limiting oxygen index (LOI) value was 30.1%. The char residues after burning were complete and denser with a higher degree of graphitization. Thermogravimetric analysis showed that POU can significantly reduce the Rmax of PTCO, and improve its thermal stability in high temperature zones. The CCT results showed that PTCO/POU had the longest time to ignition and the smallest fire growth index, which was of great significance for reducing fire risk. The TG-FTIR results showed that the volatile products of PTCO/POU were greatly reduced, and during the burning process, NH3 was produced to dilute the concentration of combustible gases. In addition, PTCO/POU also had better whiteness performance than PTCO/PPOA did. This work greatly improved the flame retardancy of PTCO in a simple way and expanded its application prospects.

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来源期刊
Advanced Industrial and Engineering Polymer Research
Advanced Industrial and Engineering Polymer Research Materials Science-Polymers and Plastics
CiteScore
26.30
自引率
0.00%
发文量
38
审稿时长
29 days
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