鲍田,王东,汤永康,徐佳馨,王金磊.基于PS模板的SiO2疏水膜制备与研究[J].表面技术,2021,50(11):172-178.
BAO Tian,WANG Dong,TANG Yong-kang,XU Jia-xin,WANG Jin-lei.Preparation and Study of SiO2 Hydrophobic Coating Based on PS Template[J].Surface Technology,2021,50(11):172-178 |
| 基于PS模板的SiO2疏水膜制备与研究 |
| Preparation and Study of SiO2 Hydrophobic Coating Based on PS Template |
| 投稿时间：2020-12-02 修订日期：2021-04-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2021.11.016 |
| 中文关键词: 疏水 PS SiO2 刮涂 溶胶-凝胶 |
| 英文关键词:hydrophobic PS SiO2 scrape-coating sol-gel |
| 基金项目:安徽省重点研究与开发计划(202004b11020020);安徽省科技重大专项(202003a05020005) |
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| Author | Institution |
| BAO Tian | State Key Laboratory of Advanced Technology for Float Glass, Bengbu Design & Research Institute for Glass Industry, Bengbu 233000, China |
| WANG Dong | State Key Laboratory of Advanced Technology for Float Glass, Bengbu Design & Research Institute for Glass Industry, Bengbu 233000, China |
| TANG Yong-kang | State Key Laboratory of Advanced Technology for Float Glass, Bengbu Design & Research Institute for Glass Industry, Bengbu 233000, China |
| XU Jia-xin | State Key Laboratory of Advanced Technology for Float Glass, Bengbu Design & Research Institute for Glass Industry, Bengbu 233000, China |
| WANG Jin-lei | State Key Laboratory of Advanced Technology for Float Glass, Bengbu Design & Research Institute for Glass Industry, Bengbu 233000, China |
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| 中文摘要: |
| 目的 研究聚苯乙烯(PS)刮涂速率、溶胶提拉速率、催化剂和陈化对疏水膜的表面粗糙度、透过率和接触角的影响规律。方法 通过绕线棒刮涂和浸镀等工艺在玻璃基板上制备玻璃/聚苯乙烯/二氧化硅(Glass/PS/SiO2)膜系，热处理去除PS后，在表面涂覆氟硅烷(FAS)，得到透明疏水膜。采用光学轮廓仪和场发射扫描电子显微镜检测PS刮涂效果、膜层表面粗糙度以及微观膜层形貌。采用分光光度计测量样品的可见-近红外光学透过率。采用接触角测试仪得到疏水膜的静止水接触角。结果 当绕线棒刮涂速率为2 cm/s，采用碱催化SiO2溶胶，提拉速率由60 mm/min增至180 mm/min时，膜层表面粗糙度依次减小，150 mm/min对应的表面粗糙度为0.0251 μm，样品的水接触角为139°。当绕线棒刮涂速率为3 cm/s，采用陈化时间较短的酸催化溶胶，可以制备得到接触角为150.5°、波长为380~1100 nm、平均透过率为88.3%的疏水膜。结论 表面粗糙结构受PS刮涂速率、SiO2溶胶的提拉速率及其性质的影响。采用酸催化的低黏度SiO2溶胶涂覆于PS模板层，经过热处理和表面改性可以得到类蜂窝结构的SiO2疏水多孔膜。 |
| 英文摘要: |
| The purpose is to investigate the effects of polystyrene (PS) scraping rate, sol pulling rate, catalyst and aging on surface roughness, transmittance and influencing rule of contact angle of hydrophobic film. Glass/polystyrene/silica (Glass/PS/ SiO2) films were prepared on glass substrates by the technique of wire wound bar scraping and dip-coating. The transparent hydrophobic film was obtained by coating fluorosilane (FAS) on the surface after heat treatment to remove the PS. An optical profilometer and field emission scanning electron microscope were used to detect PS scraping effect, surface roughness and microfilm morphology. The visible-near infrared optical transmittance of the sample was measured by spectrophotometer. The static water contact angle of hydrophobic film was obtained by using contact angle tester. The results showed that when the scraping rate of wire rod was 2 cm/s, and the alkali catalyzed SiO2 sol was used with the pulling rate increasing from 60 mm/min to 180 mm/min, the surface roughness of the film reduced in order. At 150 mm/min, the corresponding surface roughness was 0.0251 μm, and the water contact angle of the sample was 139°. When the PS scraping coating rate was 3 cm/s, the hydrophobic film with contact angle of 150.5° and average transmittance of 88.3% in wavelength range of 380 nm to 1100 nm can be prepared by using acid catalyzed sol with a short aging time. The conclusion shows that surface rough structure is affected by the PS scraping rate, the pulling rate of the SiO2 sol, and its properties. The SiO2 hydrophobic porous film of honeycomb-like structure can be obtained by coating the PS template layer with acid-catalyzed low viscosity SiO2 sol followed by heat treatment and surface modification. |
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