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A bio-based flame retardant coating used for polyamide 66 fabric
Progress in Organic Coatings ( IF 6.6 ) Pub Date : 2021-04-10 , DOI: 10.1016/j.porgcoat.2021.106271
Wei Liu , Rui Shi , Xinguo Ge , Hao Huang , Xiaosui Chen , Meng Mu

Phytic acid (IP6) is the principal storage form of phosphorus in many plant tissues, especially the bran portion of grains and other seeds. This paper describes an attempt to develop a bio-based finishing using IP6 biomolecules in order to reduce the flammability of polyamide 66 (PA 66) fabric and solve its melt dripping problem. ATIR-FTIR and SEM characterizations indicate the formation of a bio-based coating containing Psingle bondOsingle bondP groups (O-IP6 bio-oligomer) by hydration reaction between IP6 biomolecules during finishing. The limiting oxygen index test and the vertical burning test show that the treated PA fabric has the highest LOI value of 32.3 and self-extinguishing behavior without melt dripping, confirming the ability of O-IP6 coating to improve the fire performance of thermoplastic polyamide fabric. And enhancement in char formation of the treated fabric and reduction in its total heat release have also been verified by thermogravimetry analysis and microcalorimetry. Durability test reveals O-IP6 oligomeric structure could promote the water resistance of the treated sample, which could keep 82.7 % of the original LOI for 25IP6-PA fabric after 20 times washing with water alone. Moreover, the interesting intumescent-like flame retardant mechanism of IP6-PA fabric has also been proposed here.



中文翻译:

用于聚酰胺66织物的生物基阻燃涂料

植酸(IP 6)是磷在许多植物组织中的主要存储形式,尤其是谷物和其他种子的麸皮部分。本文描述了尝试使用IP 6生物分子开发生物基整理剂的尝试,以减少聚酰胺66(PA 66)织物的可燃性并解决其熔滴问题。ATIR-FTIR和SEM表征表明通过IP 6之间的水合反应形成了包含P 单键O 单键P基团的生物基涂层(O-IP 6生物低聚物)生物分子在整理过程中。极限氧指数测试和垂直燃烧测试表明,经处理的PA织物的LOI值最高,为32.3,并且自熄性没有熔体滴落,证实了O-IP 6涂层具有改善热塑性聚酰胺织物防火性能的能力。 。并且通过热重分析和微量量热法也证实了处理过的织物的炭形成的增强和其总热释放的减少。耐久性测试表明,O-IP 6低聚物结构可以提高处理样品的耐水性,对于25IP 6可以保持原始LOI的82.7%-PA织物仅用水洗20次后。此外,在此还提出了有趣的IP 6 -PA织物膨胀型阻燃机理。

更新日期:2021-04-11
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