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具有自清洁和半透明性能的耐刮耐热超疏水SiO表面的制备

Fabrication of a scratch & heat resistant superhydrophobic SiO surface with self-cleaning and semi-transparent performance.

作者信息

Zhao Xiaolu, Li Ji, Li Qiao, Qiao Liang, Zhang Lei, Liu Zhu, Yang Chunhui

机构信息

MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology Harbin 150001 PR China

Department of Chemistry, Rice University Houston Texas 77005 USA.

出版信息

RSC Adv. 2018 Jul 11;8(44):25008-25013. doi: 10.1039/c8ra04383c. eCollection 2018 Jul 9.

DOI:10.1039/c8ra04383c
PMID:35542133
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9082298/
Abstract

Herein, we report the fabrication of a superhydrophobic surface with a new and effective silica nanocomposite. A facile synthesis was developed by spraying the as-prepared silica suspension on a glass substrate, where the SiO nanoparticles were composed of methylated aerogel particles wrapped by hydroxyl-terminated polydimethylsiloxane (PDMS). Three types of methylated silica aerogel nanoparticles with different surface roughness and porosities were prepared using specific precursors and methylation agents. The coating of the silica aerogels (sodium silicate and trimethylchlorosilane) wrapped in PDMS was exceptionally superhydrophobic with a superior water contact angle of 169.80 ± 3° and a sliding angle of less than 4°. The semi-transparent coating maintained its excellent water repellency at 350 °C for least 4 h and exhibited durable superhydrophobic properties for 6 months at ambient conditions. Additionally, the coating also showed good mechanical stability and remarkable self-cleaning behaviour.

摘要

在此，我们报道了一种新型高效二氧化硅纳米复合材料超疏水表面的制备。通过将制备好的二氧化硅悬浮液喷涂在玻璃基板上，开发了一种简便的合成方法，其中SiO纳米颗粒由羟基封端的聚二甲基硅氧烷（PDMS）包裹的甲基化气凝胶颗粒组成。使用特定的前驱体和甲基化剂制备了三种具有不同表面粗糙度和孔隙率的甲基化二氧化硅气凝胶纳米颗粒。包裹在PDMS中的二氧化硅气凝胶（硅酸钠和三甲基氯硅烷）涂层具有优异的超疏水性，水接触角高达169.80±3°，滑动角小于4°。这种半透明涂层在350°C下至少保持4小时的优异拒水性，在环境条件下6个月内都表现出持久的超疏水性能。此外，该涂层还具有良好的机械稳定性和显著的自清洁性能。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/7c292b3e2754/c8ra04383c-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/b5f2a2596aa2/c8ra04383c-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/3d9faf0fecc6/c8ra04383c-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/a9f6ac831b8f/c8ra04383c-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/38e1aa18bbff/c8ra04383c-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/9dd4965835ae/c8ra04383c-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/ab44c12211d0/c8ra04383c-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/80ae4539cc1b/c8ra04383c-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/4414938ce35d/c8ra04383c-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/7c292b3e2754/c8ra04383c-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/b5f2a2596aa2/c8ra04383c-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/3d9faf0fecc6/c8ra04383c-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/a9f6ac831b8f/c8ra04383c-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/38e1aa18bbff/c8ra04383c-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/9dd4965835ae/c8ra04383c-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/ab44c12211d0/c8ra04383c-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/80ae4539cc1b/c8ra04383c-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/4414938ce35d/c8ra04383c-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/356f/9082298/7c292b3e2754/c8ra04383c-f9.jpg

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