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Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (22): 2648-2652. Previous Articles     Next Articles

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层层自组装结合后处理制备耐磨超亲水增透纳米粒子涂层

许利刚1,2，李晓禹1,2，贺军辉*,1   

  1. (1中国科学院理化技术研究所 功能纳米材料实验室 北京 100190)
    (2中国科学院研究生院 北京 100049)
  • 投稿日期:2011-05-27 修回日期:2011-06-27 发布日期:2011-08-24
  • 通讯作者: 贺军辉 E-mail:jhhe@mail.ipc.ac.cn
  • 基金资助:

    中科院重要方向性项目

Mechanically Durable Superhydrophilic Antireflective Nanoparticles Coatings via Layer-by-Layer Assembly Followed by Post-treatments

Xu Ligang1,2 Li Xiaoyu1,2 He Junhui*,1   

  1. (1 Functional Nanomaterials Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190)
    (2 Graduate University of Chinese Academy of Sciences, Beijing 100049)
  • Received:2011-05-27 Revised:2011-06-27 Published:2011-08-24
  • Contact: Junhui He E-mail:jhhe@mail.ipc.ac.cn

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Silica nanoparticles coatings assembled via layer-by-layer (LbL) assembly have attracted much attention because of their superhydrophilic and antireflective properties. However, the mechanical durability of such coatings is usually not sufficient for practical applications. The current work was carried out to improve the mechanical durability of the coatings by post treatments. Coatings were fabricated from silica nanoparticles, polyelectrolytes of poly(diallyldimethylammonium) chloride (PDDA) and sodium poly(4-styrenesulfonate) (PSS) via LbL assembly. Glass substrates covered with (PDDA/SiO2)6 coatings exhibited the highest transmittance. (PDDA/SiO2)6 coatings were sequentially subjected to hydrothermal treatment (124 ℃ for 1 h) and dynamic hardening (200 s), respectively. The as-treated coating exhibited both superhydrophilic and antireflective properties. A maximum transmittance of 99.0% was achieved in the visible range for the (PDDA/SiO2)6 coating. Meanwhile the mechanical durability of these coatings has been greatly enhanced by the post treatments.

Key words: antireflective, superhydrophilic, hydrothermal treatment, dynamic hardening, layer-by-layer assembly, mechanical durability