溶胶-凝胶法制备SiO2/SiO2-TiO2双层防雾增透膜

doi:10.7503/cjcu20180849

高等学校化学学报 ›› 2019, Vol. 40 ›› Issue (11): 2274.doi: 10.7503/cjcu20180849

溶胶-凝胶法制备SiO₂/SiO₂-TiO₂双层防雾增透膜

叶龙强^1,^*(),康硕¹,张伟豪¹,张雨露¹,惠贞贞¹,江波²

^1. 安徽科技学院化学与材料工程学院, 蚌埠 233030
^2. 四川大学化学学院, 成都 610064

收稿日期:2018-12-17 出版日期:2019-11-10 发布日期:2019-10-18
通讯作者: 叶龙强 E-mail:yelq@ahstu.edu.cn
基金资助:
安徽省自然科学基金(1908085QF277);安徽科技学院重点学科建设项目(AKZDXK2015AO1);安徽科技学院校级大学生创新创业项目资助(2017X053)

Sol-gel Preparation of Anti-Fogging SiO₂/SiO₂-TiO₂ Double-layer Antireflective Coating ^†

YE Longqiang^1,^*(),KANG Shuo¹,ZHANG Weihao¹,ZHANG Yulu¹,HUI Zhenzhen¹,JIANG Bo²

^1. College of Chemistry and Materials Engineering, Anhui Science and Technology University, Bengbu 233030, China
^2. College of Chemistry, Sichuan University, Chengdu 610064, China

Received:2018-12-17 Online:2019-11-10 Published:2019-10-18
Contact: YE Longqiang E-mail:yelq@ahstu.edu.cn
Supported by:
? Supported by the Natural Science Foundation of Anhui Province, China(1908085QF277);The Key Discipline Project of Anhui Science and Technology University, China(AKZDXK2015AO1);The Student Innovation and Entrepreneurship Foundation of Anhui Science and Technology University, China(2017X053)

摘要/Abstract

摘要：

以本征机械性能良好的溶胶-凝胶酸催化SiO₂和TiO₂薄膜为基础, 设计并制备了具有高透过率和良好机械性能的λ/4-λ/4 SiO₂/SiO₂-TiO₂双层增透膜. 所得薄膜在中心波长处的峰值透过率达到99.9%, 与设计膜层的透过率曲线高度吻合. 经耐摩擦和黏附性测试后, 该双层增透膜峰值透过率基本保持不变, 硬度高达4H, 表明其具有良好的机械性能. 水表面接触角测试结果显示该双层增透膜具有超亲水性, 表现出良好的冷/热防雾效果.

关键词: 膜层设计, 双层增透膜, 机械性能, 超亲水性, 防雾性能

Abstract:

SiO₂/SiO₂-TiO₂ double-layer antireflective(AR) coating with high transmittance and excellent mechanical property was designed and prepared by sol-gel method based on the intrinsically robust sol-gel acid-catalyzed SiO₂ and TiO₂ thin films. It was found that the maximum transmittance of the obtained double-layer antireflective coating reached 99.9%, well in accordance with the simulated one. After abrasion and hardness test, the transmittance spectra all changed little compared with the original one; and this double-layer AR coating could withstand the 4H pencil hardness test, showing an excellent mechanical property. Moreover, this double-layer coating was superhydrophilic, hence the coating possessed excellent anti-fogging property. The high transmittance, excellent mechanical and anti-fogging property make this double-layer $Si O 2 / Si O 2 - Ti O 2$ AR coating an alternative candidate in the field of solar cells.

Key words: Thin film design, Double-layer antireflective coating, Mechanical property, Superhydrophilicity, Anti-fogging property

中图分类号:

O613

TrendMD:

叶龙强,康硕,张伟豪,张雨露,惠贞贞,江波. 溶胶-凝胶法制备SiO₂/SiO₂-TiO₂双层防雾增透膜. 高等学校化学学报, 2019, 40(11): 2274.

YE Longqiang,KANG Shuo,ZHANG Weihao,ZHANG Yulu,HUI Zhenzhen,JIANG Bo. Sol-gel Preparation of Anti-Fogging SiO₂/SiO₂-TiO₂ Double-layer Antireflective Coating ^†. Chem. J. Chinese Universities, 2019, 40(11): 2274.

图/表 7

Fig.1 Dispersion curves of B-SiO2, TiO2 and SiO2-TiO2 films after heat-treatment at 400 ℃(A) and simulated transmittance spectrum of the designed λ/4-λ/4 double-layer antireflective coatings(B) The inset in (B) is the schematic drawing of the double-layer AR coatings.

Fig.2 Change of the refractive index of SiO2-TiO2 composite film at 550 nm with the mass fraction of TiO2

Fig.3 Simulated and experimental transmittance spectra of the SiO2/SiO2-TiO2 double-layer antireflective coating(A) and transmittance spectra of TiO2, SiO2, SiO2-TiO2 single-layer coating and SiO2/SiO2-TiO2 double-layer coating with the same total film-thickness of 173 nm(B)

Fig.4 Cross-sectional SEM image(A) and surface AFM image(B) of the SiO2/SiO2-TiO2 double-layer coating

Fig.5 Transmittance spectra of SiO2/SiO2-TiO2 double-layer antireflective coating before and after abrasion and adhesion test

Fig.6 Water contact angles of K9 substrate(A) and SiO2/SiO2-TiO2 double-layer coating before(B) and after(C) heat-treatment

Fig.7 Heat(A, B) and cold(C, D) anti-fogging behavior of bare K9 substrate(A, C) and K9 substrate covered by SiO2/SiO2-TiO2 double-layer coating(B, D)

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溶胶-凝胶法制备SiO₂/SiO₂-TiO₂双层防雾增透膜

Sol-gel Preparation of Anti-Fogging SiO₂/SiO₂-TiO₂ Double-layer Antireflective Coating ^†

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