Effect of sodium ligno-sulphonate on flammability of PET woven fabric

IF 2.2 4区工程技术 Q1 MATERIALS SCIENCE, TEXTILES

Journal of Industrial Textiles Pub Date : 2023-01-01 DOI:10.1177/15280837221150203

S. Basak, Aditya Waghmare, D. Gupta, Wazed Ali

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引用次数: 0

Abstract

Polyethylene terephthalate (PET) polyester fabric has been treated with different concentrations of sodium lignin sulphonate (SLS), a lignin based sustainable flame retarding agent. Treated PET fabric has exhibited different chemical loading on its surface varying from 15 to 60% depending on the concentration used. Treated fabric has shown 40–70% more limiting oxygen index (LOI) value as compared to the control PET fabric. 200 g/L SLS treated PET fabric (with 35% chemical loading) has shown LOI value of 27. In addition to it, melt dripping property of all the treated PET fabrics have been found to be stopped with lower shrinkage during combustion, as observed from the UL94 test results. TG analysis of the said fabric has shown 20–25% more char mass retention and lower rate of weight loss as compared to the control one. Char morphology of the control and the treated fabric has also been examined in different magnifications and analyzed in detail. Forced combustion test of the sodium ligno-sulphonate treated PET fabric has revealed 82% lower peak heat release rate (PHRR) as compared to the control PET fabric with less amount of carbon monoxide liberation during burning. Besides, a possible mechanism lies behind the flame retardancy of the SLS treated PET fabric also has been expressed and discussed scientifically.

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木质素磺酸钠对PET机织物燃烧性能的影响

用不同浓度的木质素基可持续阻燃剂木质素磺酸钠(SLS)对聚对苯二甲酸乙二醇酯(PET)涤纶织物进行处理。经处理的PET织物在其表面表现出不同的化学负荷，根据使用的浓度从15%到60%不等。处理后织物的极限氧指数(LOI)值比对照涤纶织物高40-70%。200 g/L SLS处理涤纶织物(化学负荷35%)LOI值为27。此外，从UL94测试结果中可以看出，所有处理过的PET织物的熔体滴落性能都停止了，燃烧时的收缩率更低。热重分析表明，与对照织物相比，该织物的炭质量保留率提高了20-25%，失重率降低了。在不同的放大倍数下，对对照织物和处理织物的焦形态进行了检测和详细分析。经木质素磺酸钠处理的PET织物的强制燃烧试验表明，与对照织物相比，燃烧过程中一氧化碳释放量较少，峰值热释放率(PHRR)降低82%。此外，还对SLS处理后的涤纶织物阻燃的可能机理进行了科学的阐述和探讨。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Industrial Textiles MATERIALS SCIENCE, TEXTILES-

CiteScore

5.30

自引率

18.80%

发文量

165

审稿时长

2.3 months

期刊介绍： The Journal of Industrial Textiles is the only peer reviewed journal devoted exclusively to technology, processing, methodology, modelling and applications in technical textiles, nonwovens, coated and laminated fabrics, textile composites and nanofibers.