纺织学报 ›› 2022, Vol. 43 ›› Issue (06): 94-99.doi: 10.13475/j.fzxb.20210507707

• 染整与化学品 • 上一篇    下一篇

磷/氮阻燃剂对涤纶/棉混纺织物的阻燃整理

黄益婷1,2, 程献伟1,2, 关晋平1,2(), 陈国强1,2   

  1. 1.苏州大学 纺织与服装工程学院,江苏 苏州 215021
    2.苏州大学 现代丝绸国家工程实验室, 江苏 苏州 215021
  • 收稿日期:2021-05-27 修回日期:2022-03-24 出版日期:2022-06-15 发布日期:2022-07-15
  • 通讯作者: 关晋平
  • 作者简介:黄益婷(1996—),女,硕士生。主要研究方向为纺织品阻燃功能改性。
  • 基金资助:
    江苏省高校优势学科建设工程项目(2018-87);纺织行业纺织材料阻燃整理重点实验室项目(Q811580421)

Phosphorus/nitrogen-containing flame retardant for flame retardant finishing of polyester/cotton blended fabric

HUANG Yiting1,2, CHENG Xianwei1,2, GUAN Jinping1,2(), CHEN Guoqiang1,2   

  1. 1. College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu 215021, China
    2. National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, Jiangsu 215021, China
  • Received:2021-05-27 Revised:2022-03-24 Published:2022-06-15 Online:2022-07-15
  • Contact: GUAN Jinping

摘要:

为赋予涤纶/棉混纺织物良好的阻燃性能,采用生物质植酸和尿素合成植酸铵盐,通过轧—烘—焙工艺对涤纶/棉混纺织物进行整理。借助傅里叶红外光谱仪对合成阻燃剂植酸铵盐进行表征,并研究了整理后涤纶/棉混纺织物的表面形貌、热稳定性、热释放性能、阻燃性能及其阻燃机制。结果表明:整理后涤纶/棉混纺织物的阻燃性能较好,极限氧指数升高至25.6%,在垂直燃烧测试中能够自熄,炭长降低为12 cm,满足GB/T 17591—2006《阻燃织物》中B1级阻燃性能的要求;整理后涤纶/棉混纺织物的热稳定性提高,热释放能力降低;植酸铵盐主要通过膨胀型阻燃机制提高涤纶/棉混纺织物的阻燃性能。

关键词: 功能性纺织品, 涤纶/棉混纺织物, 阻燃整理, 植酸, 支架效应, 膨胀型阻燃机制

Abstract:

The development of flame retardant polyester/cotton blended fabrics is of great interest. In this study, ammonium phytate salt was synthesized using biomass phytic acid and urea, and applied to improve the flame retardancy of polyester/cotton blended fabric through pad-dry-cure process. The ammonium phytate salt was characterized with the Attenuated total reflection Flourier transformed infrared spectra. The surface morphology, thermal stability, heat release capacity, flame retardancy and mechanism of the treated polyester/cotton blended fabric were explored. The results showed that the treated polyester/cotton blended fabrics had good flame retardancy. The LOI value of treated fabrics was increased to 25.6%. During the vertical burning test, the treated fabrics could self-extinguish and had the reduced char length of 12 cm, meeting the B1 classification according to GB/T 17591—2006 "Flame retardant textiles". Besides, the treated fabrics showed higher thermal stability and lower heat release ability. Ammonium phytate salt improved the flame retardant properties of polyester/cotton blended fabrics through an intumescent flame retardant mechanism.

Key words: functional textile, polyester/cotton blended fabric, flame retardant finishing, phytic acid, scaffolding effect, intumescent flame retardant mechanism

中图分类号: 

  • TQ342.21

图1

植酸铵盐的合成路线"

图2

阻燃剂和阻燃整理前后涤纶/棉混纺织物的红外光谱"

图3

阻燃整理前后涤纶/棉混纺织物的表面形貌(×1 000)"

表1

不同质量浓度植酸铵盐整理涤纶/棉混纺织物的质量增加率、极限氧指数和损毁长度"

质量浓度/
(g·L-1)
质量增加
率/%
极限氧指
数/%
损毁长
度/cm
0 0 17.1 30.0
100 10.9 24.8 30.0
200 16.3 25.6 12.0
300 27.4 28.2 10.5
400 27.8 29.3 9.5

图4

阻燃整理前后涤纶/棉混纺织物的垂直燃烧图"

图5

涤纶/棉混纺织物在空气和氮气下的TG曲线"

图6

阻燃整理前后涤纶/棉混纺织物的热释放速率曲线"

表2

阻燃整理前后涤纶/棉混纺织物的热释放参数"

样品 pHRR/
(W·g-1)
CHR/
(J·(g·K)-1)
THR/
(kJ·g-1)
残炭
率/%
阻燃整理前 441.1 236 19.9 0.4
阻燃整理后 425.7 194 8.9 12.2

图7

阻燃整理前后涤纶/棉混纺织物残炭的扫描电镜照片(×500)"

表3

涤纶/棉混纺织物物理力学性能"

样品 断裂强
力/N
断裂伸
长率/%
抗弯长
度/mm
白度/
%
阻燃整理前 605.3 13.4 16.3 85.1
阻燃整理后 579.2 17.9 17.4 77.2
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