植酸的铵化及其对Lyocell织物的阻燃整理

doi:10.13475/j.fzxb.20181205006

纺织学报 ›› 2020, Vol. 41 ›› Issue (02): 83-88.doi: 10.13475/j.fzxb.20181205006

植酸的铵化及其对Lyocell织物的阻燃整理

徐爱玲, 王春梅()

南通大学纺织服装学院, 江苏南通 226019

收稿日期:2018-12-24 修回日期:2019-11-10 出版日期:2020-02-15 发布日期:2020-02-21
通讯作者: 王春梅
作者简介:徐爱玲(1995—),女,硕士生。主要研究方向为纺织品的阻燃整理。
基金资助:
南通市前沿与关键技术创新计划工业创新科技项目(GY22015026);南通大学研究生创新项目(FZ201807)

Ammonium modification of phytic acid and flame retardant finishing of Lyocell fabric

XU Ailing, WANG Chunmei()

School of Textile and Clothing, Nantong University, Nantong, Jiangsu 226019, China

Received:2018-12-24 Revised:2019-11-10 Online:2020-02-15 Published:2020-02-21
Contact: WANG Chunmei

摘要/Abstract

摘要：

为提高Lyocell织物的阻燃效果,对天然磷化物植酸进行铵化改性,并以双氰胺为催化剂应用于Lyocell织物的阻燃整理。利用傅里叶红外光谱仪、扫描电子显微镜、热重分析仪,测定了阻燃整理Lyocell织物的特征红外吸收、表面形貌以及热稳定性能。对阻燃织物进行了垂直燃烧实验,测定了织物的燃烧性能,并对整理织物的耐洗性进行了测试。结果表明:与未整理Lyocell织物相比,阻燃整理后织物的吸热降解质量损失率下降了20.11%,800 ℃ 时热解残炭量提高了27.98%,垂直燃烧的损毁长度下降至3.4 cm;极限氧指数高达36.6%,达到难燃的级别;且阻燃织物经20次标准洗涤后,仍能达到国家B2标准。

关键词: 植酸, 铵化改性, 阻燃整理, Lyocell织物, 阻燃织物

Abstract:

In order to improve the flame retardancy of Lyocell fabrics, the natural phytic acid was ammonium modified, and the dicyandiamide was used as catalyst for flame retardant finishing of Lyocell fabrics. The characteristic groups of phytic acid ammonium were characterized by Fourier transform infrared spectroscopy. By means of Fourier transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, vertical burning instrument and limiting oxygen index, the infrared absorption, surface morphology and thermal stability of the finishing Lyocell fabric were determined. The results show that, compared with the unfinished Lyocell fabric, the mass loss rate of endothermic degradation decreases by 20.11%, the amount of carbon increases by 27.98% at 800 ℃. The vertical burning damage length of the finished Lyocell fabric decreases to 3.4 cm, the limiting oxygen index is up to 36.6%, reaching an acceptible flame retardant level. After 20 standard washings, the Lyocell fabrics finished with the flame retardant can still reach the requirements set in standard GB B2.

Key words: phytic acid, ammonium modification, flame retardant finishing, Lyocell fabric, flame retardant fabric

中图分类号:

TS195.2

徐爱玲, 王春梅. 植酸的铵化及其对Lyocell织物的阻燃整理[J]. 纺织学报, 2020, 41(02): 83-88.

XU Ailing, WANG Chunmei. Ammonium modification of phytic acid and flame retardant finishing of Lyocell fabric[J]. Journal of Textile Research, 2020, 41(02): 83-88.

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样品	失重阶段	初始温度/℃	终止温度/℃	质量损失率/%	800 ℃残余炭量/%
	阶段1	28	220	6.14
原样	阶段2	220	359	61.13	8.55
	阶段3	359	770	23.79
	阶段1	28	174	6.00
整理织物	阶段2	174	357	41.02	36.53
	阶段3	357	770	15.38

样品	未水洗				水洗20次
样品	LOI值/%	续燃时间/s	阴燃时间/s	损毁炭长/cm	续燃时间/s	阴燃时间/s	损毁炭长/cm
原织物	<25.0	23	134	30.0	25	130	30.0
整理织物	36.6	0	0	3.4	0	0	3.8

织物编号	抗弯长度/cm	白度/%	断裂强力/N
1^#	3.5	77.8	752
2^#	4.5	57.9	524
3^#	4.2	64.2	486
4^#	4.4	58.4	536

植酸的铵化及其对Lyocell织物的阻燃整理

Ammonium modification of phytic acid and flame retardant finishing of Lyocell fabric

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