Superhydrophobic and mechanically robust polysiloxane composite coatings containing modified silica nanoparticles and PS-grafted halloysite nanotubes

doi:10.1016/j.cjche.2021.12.017

中国化学工程学报 ›› 2022, Vol. 52 ›› Issue (12): 56-65.DOI: 10.1016/j.cjche.2021.12.017

• Full Length Article • 上一篇下一篇

Superhydrophobic and mechanically robust polysiloxane composite coatings containing modified silica nanoparticles and PS-grafted halloysite nanotubes

Jie Wang, Ling Zhang, Chunzhong Li

Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai 200237, China

收稿日期:2021-10-16 修回日期:2021-12-29 出版日期:2022-12-28 发布日期:2023-01-31
通讯作者: Ling Zhang,E-mail:zlingzi@ecust.edu.cn;Chunzhong Li,E-mail:czli@ecust.edu.cn
基金资助:
This work was supported by the National Natural Science Foundation of China (21878092, 21838003, 91834301 and 51621002), the Shanghai Scientific and Technological Innovation Project (19JC1410400), Program of Shanghai Academic Research Leader (19XD1401400), the Innovation Program of Shanghai Municipal Education Commission, the Fundamental Research Funds for the Central Universities (222201718002).

Superhydrophobic and mechanically robust polysiloxane composite coatings containing modified silica nanoparticles and PS-grafted halloysite nanotubes

Jie Wang, Ling Zhang, Chunzhong Li

Key Laboratory for Ultrafine Materials of Ministry of Education, Shanghai Engineering Research Center of Hierarchical Nanomaterials, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai 200237, China

Received:2021-10-16 Revised:2021-12-29 Online:2022-12-28 Published:2023-01-31
Contact: Ling Zhang,E-mail:zlingzi@ecust.edu.cn;Chunzhong Li,E-mail:czli@ecust.edu.cn
Supported by:
This work was supported by the National Natural Science Foundation of China (21878092, 21838003, 91834301 and 51621002), the Shanghai Scientific and Technological Innovation Project (19JC1410400), Program of Shanghai Academic Research Leader (19XD1401400), the Innovation Program of Shanghai Municipal Education Commission, the Fundamental Research Funds for the Central Universities (222201718002).

摘要/Abstract

摘要： Excellent mechanical properties are the prerequisite for the application of superhydrophobic polymer coatings. However, significantly improving the mechanical properties without affecting other properties such as hydrophobicity is a huge challenge. In this study, a superhydrophobic coating with excellent mechanical properties was prepared by spraying a mixture of polysiloxane resins based on three siloxane monomers, hexadecyltrimethoxysilane (HDTMS) modified nano-SiO₂ particles (SiO₂-HDTMS) and polystyrene-grafted halloysite nanotubes (HNTs-PS). SiO₂-HDTMS dispersed homogeneously in polysiloxane coatings and the water contact angle of corresponding coating exceeding 150°, achieving superhydrophobicity. The SiO₂-HDTMS/HNTs-PS/polysiloxane composite coatings showed excellent abrasion resistance with the water coating contact angle remaining above 150° after 90 abrasion cycles, indicating that HNTs-PS can significantly improve the mechanical properties of the coating without affecting the hydrophobic properties of the coating. The achieved coating also exhibited excellent antifouling and acid and alkali corrosion resistance. This work provides a convenient and ecologically friendly method to prepare superhydrophobic polysiloxane composite coating with excellent mechanical properties, which is promising in the application of anti-fouling, anti-corrosion, and oil–water separation etc.

关键词: Polysiloxane, Superhydrophobic coating, Mechanical properties

Abstract: Excellent mechanical properties are the prerequisite for the application of superhydrophobic polymer coatings. However, significantly improving the mechanical properties without affecting other properties such as hydrophobicity is a huge challenge. In this study, a superhydrophobic coating with excellent mechanical properties was prepared by spraying a mixture of polysiloxane resins based on three siloxane monomers, hexadecyltrimethoxysilane (HDTMS) modified nano-SiO₂ particles (SiO₂-HDTMS) and polystyrene-grafted halloysite nanotubes (HNTs-PS). SiO₂-HDTMS dispersed homogeneously in polysiloxane coatings and the water contact angle of corresponding coating exceeding 150°, achieving superhydrophobicity. The SiO₂-HDTMS/HNTs-PS/polysiloxane composite coatings showed excellent abrasion resistance with the water coating contact angle remaining above 150° after 90 abrasion cycles, indicating that HNTs-PS can significantly improve the mechanical properties of the coating without affecting the hydrophobic properties of the coating. The achieved coating also exhibited excellent antifouling and acid and alkali corrosion resistance. This work provides a convenient and ecologically friendly method to prepare superhydrophobic polysiloxane composite coating with excellent mechanical properties, which is promising in the application of anti-fouling, anti-corrosion, and oil–water separation etc.

Key words: Polysiloxane, Superhydrophobic coating, Mechanical properties

Jie Wang, Ling Zhang, Chunzhong Li. Superhydrophobic and mechanically robust polysiloxane composite coatings containing modified silica nanoparticles and PS-grafted halloysite nanotubes[J]. 中国化学工程学报, 2022, 52(12): 56-65.

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Superhydrophobic and mechanically robust polysiloxane composite coatings containing modified silica nanoparticles and PS-grafted halloysite nanotubes

Superhydrophobic and mechanically robust polysiloxane composite coatings containing modified silica nanoparticles and PS-grafted halloysite nanotubes

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