超声波处理对涤纶织物聚氨酯涂层中4,4'-二氨基二苯甲烷的影响

doi:10.13475/j.fzxb.20201208305

摘要/Abstract

摘要：

针对二甲苯溶剂脱色含聚氨酯涂层涤纶织物样品中4,4'-二氨基二苯甲烷的检出率高,结果差异大的问题,分别采用邻二甲苯、间二甲苯、对二甲苯作为萃取溶剂,通过超声波萃取涤纶织物的聚氨酯涂层,研究超声波处理时间、处理温度、分散剂种类、分散剂体积分数等条件对4,4'-二氨基二苯甲烷质谱峰面积的影响。结果表明:乙腈作为分散剂进行转移时,目标物峰面积最大;当乙腈体积分数分别为50%、70%、70%时,邻二甲苯、间二甲苯和对二甲苯萃取残留物的目标物峰面积最大;超声波处理温度分别为40、50、60 ℃时,对二甲苯、邻二甲苯、间二甲苯作为萃取溶剂时的目标物峰面积达到顶点;超声波处理时间为45~50 min时,3种萃取溶剂的萃取效率最优。

关键词: 4,4'-二氨基二苯甲烷, 二甲苯异构体, 聚氨酯涂层, 超声波处理, 涤纶织物

Abstract:

Aiming at the problem of high detection rate of 4,4'-diaminodiphenylmethane in polyester fabric samples with polyurethane coating treated with xylene solvent decolorization and great difference in results, o-xylene, m-xylene and p-xylene were used as extraction solvents respectively, and polyurethane coated polyester fabric was studied by ultrasonic extraction, and the effects of ultrasonic treatment time, temperature, type of dispersant and volume fraction of dispersant on the peak area response value of 4,4'-diaminodiphenylmethane mass spectrometry were studied.It was found that when the dispersant acetonitrile was transferred, the response value of the target was the highest. When the volume fraction of acetonitrile was 50%, 70%, 70%, respectively, the peak area of the target substance of the extraction residue of o-xylene, m-xylene and p-xylene was the highest, and when the treatment temperature was 40,50,60 ℃, p-xylene, o-xylene and m-xylene were used as extraction solvent, the peak area of the target compound reached the peak, and the extraction efficiency was the best when the treatment time was 45-50 min.

Key words: 4,4'-diaminodiphenylmethane, xylene isomer, polyurethane coating, ultrasonic treatment, polyester fabric

中图分类号:

TS19

朱兰芳, 白洁, 周吟澄, 侯成伟. 超声波处理对涤纶织物聚氨酯涂层中4,4'-二氨基二苯甲烷的影响[J]. 纺织学报, 2021, 42(11): 124-128.

ZHU Lanfang, BAI Jie, ZHOU Yincheng, HOU Chengwei. Effect of ultrasonic treatment on 4,4'-diaminodiphenylmethane in polyurethane coating of polyester fabric[J]. Journal of Textile Research, 2021, 42(11): 124-128.

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分散剂种类	峰面积
分散剂种类	邻二甲苯	间二甲苯	对二甲苯
甲醇	263 858	384 858	83 779
乙腈	350 878	509 057	281 455
乙醇	227 587	187 623	214 321