Chinese Journal of Applied Chemistry ›› 2019, Vol. 36 ›› Issue (7): 798-806.DOI: 10.11944/j.issn.1000-0518.2019.07.180389

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Preparation and Performance of Hybrid Superhydrophobic Materials from Fluorinated Epoxy Resin and Silica Nanoparticles

HOU Chengmina*(),LI Naa,DONG Haitaob,KOU Yanpinga   

  1. aSchool of Printing,Packaging Engineering and Digital Media Technology, Xi'an University of Technology,Xi'an 710048,China
    bXi'an Global Printing Co., Ltd.,Xi'an 710048,China
  • Received:2018-12-05 Accepted:2019-04-18 Published:2019-07-01 Online:2019-07-02
  • Contact: HOU Chengmin
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.51803167), the Natural Science Foundation of Shaanxi Province(No.2016JQ2029), the Project for Young Lifted Scientists of Colleges and Universities of Shanxi Province of China(No.20160116), the Scientific Research Program Founded by Shaanxi Provincial Educational Department(No.18JK0586), the Research Project of Construction Science and Technology of Xi'an(No.SJW2015-24)

Abstract:

At present, there are many preparation methods for superhydrophobic materials, but most of them have the disadvantages of complicated preparation processes. In this paper, the traditional free radical polymerization method was used to prepare super-hydrophobic materials with excellent performance by simple operation using organic and inorganic materials commonly used in the market as raw materials. The method for preparing superhydrophobic materials in this study can be widely applied to hydrophobic modification of various substrate materials. The crosslinkable precursor polymer P(GMA-r-St) was synthesized by conventional radical polymerization using glycidyl methacrylate(GMA) and styrene(St) as monomers. Further, it was graft-modified with trifluoroacetic acid(TFA) to prepare a fluorine-containing epoxy polymer P(GMA-r-St)-g-TFA. Nano-silica(SiO2) was modified by γ-aminopropyltriethoxysilane(KH-550) and characterized by Fourier transform infrared spectroscopy(FTIR) and thermogravimetry(TG). A superhydrophobic modified material prepared by mixing amino-modified nano-silica with a fluorine-containing epoxy polymer, and the surface of the cotton fabric is soaked to rapidly construct a super-hydrophobic structure. By changing the content of modified nanoparticles, the hydrophobic properties and solvent resistance of the constructed cotton fabrics were investigated. The results show that the cotton fabric with immersion modification has a water contact angle of 160° and a solvent resistance time of 130 min, which has good solvent resistance.

Key words: fluorinated epoxy resin, free radical polymerization, silica, super-hydrophobic, durability