Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (02): 183-188.doi: 10.13475/j.fzxb.20211103706

• Dyeing and Finshing & Chemicals • Previous Articles     Next Articles

Preparation and application of fully aqueous organic-inorganic hybrid fluorine-free water-repellant finishing agents

MA Yiping1,2, FAN Wuhou1,2(), WU Jinchuan3, PU Zongyao3   

  1. 1. Sichuan Textile Scientific Research Institute Co., Ltd., Chengdu, Sichuan 610083, China
    2. High-tech Organic Fibers Key Laboratory of Sichuan Province, Chengdu, Sichuan 610083, China
    3. Sichuan Yixin Technology Co., Ltd., Chengdu, Sichuan 610083, China
  • Received:2021-11-05 Revised:2021-11-17 Online:2022-02-15 Published:2022-03-15
  • Contact: FAN Wuhou E-mail:fanwuhou1988@163.com

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Abstract:

In view of the problem that organic-inorganic hybrid fluorine-free water-repellant finishing agents are not environmental friendly due to organic solvent, the long-chain alkyl silane modified sol (H-NPs) emulsion and polysiloxane modified waterborne polyurethane(SiWPU) emulsion were combined to prepare fully aqueous organic-inorganic hybrid fluorine-free water-repellant finishing agents. The effects of organic/inorganic component ratio in organic-inorganic hybrid fluorine-free water-repellant finishing agents were studied, and the influences of baking time and temperature on the property of finished polyester/cotton fabric were also discussed in detail. Micro-nano rough structures on the surface of finished polyester/cotton fabric were observed by SEM, and its application performance was also investigated. The results reveal that the water contact angle on the surface of the finished fabric gradually increases with the increase of H-NPs mass fraction, reaching the maximum value of (138 ± 2.0)° when H-NPs mass fraction is 27.5%. For the same baking time, the finished fabric baked at 180 ℃ demonstrates a higher water contact angles compared with that baked at 150 ℃. Additionaly, the water contact angle of the finished fabric increases gradually with baking time, with the optimal baking time determined to be 5 min. The convex structure of micro/nano scale is also observed on the surface of finished fabric, significantly verifing the existence of micro/nano rough structure.

Key words: organic-inorganic hybrid, fluorine-free water-repellant finishing agents, fully aqueous, polyester/cotton fabric, waterborne polyurethane, silicon sol

CLC Number: 

  • TQ316.334

Fig.1

FT-IR spectra of SiWPU and IPDI"

Fig.2

FT-IR spectrum of H-NPs, TEOS and HDTMS"

Fig.3

Histogram of size distribution presented particles sizes of SiWPU emulsion"

Fig.4

Histogram of size distribution presented particles sizes of H-NPs emulsion"

Fig.5

Effect of mass ratio of H-NPs on hydrophobicity of SiWPU/H-NPs fabrics"

Fig.6

Effect of drying time and drying temperature on hydrophobicity of SiWPU/H-NPs fabrics"

Fig.7

Photos of water (blue)and contact angles on untreated and SiWPU/H-NPs fabrics"

Fig.8

SEM photographs of untreated and SiWPU/H-NPs fabrics. (a) Different magnification times of untreated fabrics; (b) Different magnification times of SiWPU/H-NPs fabrics"

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