纺织学报 ›› 2020, Vol. 41 ›› Issue (02): 33-38.doi: 10.13475/j.fzxb.20181107206

• 纤维材料 • 上一篇    下一篇

防透明聚酯和消光聚酰胺6纤维中TiO2微粒分布的表征方法

邢丹丹1, 王妮1(), 刘虎易2, 甘学辉3, 施楣梧4   

  1. 1.东华大学 纺织学院, 上海 201620
    2.苏州龙杰特种纤维股份有限公司, 江苏 张家港 215600
    3.东华大学 机械学院, 上海 201620
    4.军事科学院 军需工程技术研究所, 北京 100082
  • 收稿日期:2018-11-29 修回日期:2019-11-27 出版日期:2020-02-15 发布日期:2020-02-21
  • 通讯作者: 王妮
  • 作者简介:邢丹丹(1992—),女,硕士生。主要研究方向为防透明聚酯纤维开发及产品设计。
  • 基金资助:
    国家重点研发计划项目(2016YFB0302703);国家自然科学基金项目(51103020)

Characterization on distribution of TiO2 particles in opaque polyester and dull nylon filaments

XING Dandan1, WANG Ni1(), LIU Huyi2, GAN Xuehui3, SHI Meiwu4   

  1. 1. College of Textiles, Donghua University, Shanghai 201620, China
    2. Suzhou Longjie Special Fiber Co., Ltd.,Zhangjiagang, Jiangsu 215600, China
    3. College of Mechanical Engineering, Donghua University, Shanghai 201620,China
    4. Institute of Military Engineering, Academy of Military Sciences, Beijing 100082, China
  • Received:2018-11-29 Revised:2019-11-27 Online:2020-02-15 Published:2020-02-21
  • Contact: WANG Ni

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摘要：

针对共混法制备的功能纤维中微粒分布缺乏相应检测手段的现状,提出一种通过配制同折射率溶液使纤维透明化来表征其中微粒分布的方法,并对防透明聚酯纤维以及消光聚酰胺6纤维中TiO2的分布进行测试,同时借助扫描电子显微镜对纤维横截面、纵向表面的TiO2分布进行观察,纳米CT成像技术对纤维进行三维图重建。结果表明:扫描电子显微镜法仅能够显示小范围内TiO2的分布;折射率法在表征纤维中共混微粒分布上具有一定的可行性,三维重建后的纳米CT成像结果可统计出纤维中共混微粒及其粒径分布。实验结果表明,母粒纺比切片纺更易造成防透明聚酯纤维中TiO2的团聚。

关键词: 纳米CT成像, 折射率法, 微粒分布, 防透明聚酯, 消光聚酰胺

Abstract:

In view of the current lack of corresponding characterization methods for the distribution of particles in functional fibers prepared by blending, a new refractive index method for making transparent fibers by preparing a solution with the same refractive index as the fiber was proposed. This new method was used to measure TiO2 distribution in opaque polyester fibers and dull polyamide fibers. In this research, scanning electron microscopy was used to characterize the distribution of the TiO2 particles in both the cross-sectional and the longitudinal surface of the fiber, while the three-dimensional imaging of nano-C technology was used for 3-D reconstruction of fibers. The results show that compared with the scanning electron microscopy that can only show the distribution of TiO2 in a small range, the refractive index method has certain feasibility in characterizing the distribution of blended particles in fibers. The results of nano-CT imaging after 3-D reconstruction can be used to count the blended particles and the particle size distributions. The experimental results of the three testing methods show that the agglomeration of inorganic particles in the fiber is more easily caused by master batch spinning than slicing spinning.

Key words: nano-CT technique, refractive index method, particle distribution, opaque polyester, dull nylon filament

中图分类号: 

  • TS176

表1

混合溶液的折射率"

纤维 ɑ-溴代萘体积/mL 石蜡油体积/mL 混合溶液折射率
8.00 0 1.658
6.74 1.26 1.628
聚酯 5.47 2.53 1.598
4.21 3.79 1.568
2.95 5.05 1.538
1.68 6.32 1.508
5.30 2.70 1.594
4.21 3.79 1.568
聚酯酰6 3.12 4.88 1.542
2.00 6.00 1.515
0.88 7.12 1.489

图1

防透明聚酯与消光聚酰胺6纤维的横截面和纵向表面扫描电镜照片"

图2

防透明聚酯纤维的断层扫描照片和三维重构图"

图3

消光聚酰胺6纤维的断层扫描照片和三维重构图"

图4

防透明聚酯和消光聚酰胺6纤维中TiO2颗粒的粒径分布统计图"

图5

防透明聚酯和消光聚酰胺6纤维在溶液中的光透射率"

图6

防透明聚酯纤维的光学显微镜照片(×40)"

图7

消光聚酰胺6的光学显微镜图像(×20)"

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