Control of Surface Texture of Coating Films Prepared via Solution

溶液制备涂膜表面织构的控制

• 批准号: 11450252
• 负责人: MINAMI Tsutomu
• 金额: $ 7.49万
• 依托单位: Osaka Prefecture University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11450252/
• 关键词: Sol-gel method; Superhydrophobic; Superhydrophilic; Inorganic-organic hybrid; Ferroelectricity; Microstructure; Hot water treatment; UV irradiation; 有機-無機複合体; ルテニウム錯体; 沸騰水処理

(1) UV irradiation on a superhydrophobic coating film which consists of three layers, a flowerlike Al_2O_3 gel film, a very thin TiO_2 layer, and a FAS layer, led to conversion of the superhydrophobic surface into a superhydrophilic surface.(2) A small roughness of about 20-50 nm was found to form on the Al_2O_3 gel films prepared from aluminum alkoxide and then immersed in hot water at 60℃. The coating of hydrolyzed fluoroalkyltrimethoxysilane on the flowerlike Al_2O_3 films produced transparent, superhydrophobic films with contact angle for water larger than 150°.(3) Silica thin films containing organic polymers were prepared on PET substrates by the sol-gel method. Poly(vinyl alcohol) was found to be most effective to suppress the water and oxygen permeability of PET substrates coated with the organic-inorganic composite films.(4) YMnO_3 thin films prepared from solution and heat-treated in vacuum had a fine, uniform, and dense structure with a very smooth surface. The ferroelectricity of the solution-derived YMnO_3 thin films at room temperature was observed for the first thme due to the improvement of crystallinity and the leakage current by the vacuum heat treatment.(5) Transparent and porous anatase nanocrystals-dispersed films were prepared by treating the sol-gel derived TiO_2-SiO_2 coating films containing poly (ethylene glycol) with hot water. In the SiO_2-TiO_2 films without the addition of poly (ethylene glycol), anatase nanocrystals were formed at the surface of the films with hot water treatment, and the surface had a small roughness.

(1)紫外光照射在由花状Al_2O_3凝胶膜、很薄的TiO_2层和FAS层组成的超疏水涂层上，导致超疏水表面转变为超亲水表面。(2)由醇铝制备的Al_2O_3凝胶膜浸入60℃热水中后，发现其表面形成了约20-50 nm的微小粗糙度。水解的氟烷基三甲氧基硅烷在花状Al_2O_3膜上形成透明的超疏水膜，对水的接触角大于150°。(3)采用溶胶-凝胶法在PET基片上制备了含有机聚合物的SiO2薄膜。聚（乙烯醇）被认为是最有效的抑制水和氧气的渗透性的PET基板涂布的有机-无机复合膜。(4)采用溶液法制备的YMnO_3薄膜经真空热处理后，薄膜结构均匀、致密，表面光滑。由于真空热处理提高了YMnO_3薄膜的结晶度和漏电流，首次在室温下观察到了YMnO_3薄膜的铁电性。(5)用热水处理溶胶-凝胶法制备的含聚乙二醇的TiO_2-SiO_2涂层薄膜，制备了透明多孔的纳米TiO_2-SiO_2复合薄膜。在未添加聚乙二醇的SiO2-TiO 2薄膜中，经热水处理后，薄膜表面形成锐钛型纳米晶，且表面粗糙度较小。

项目成果

Y.Kotani, A.Matsuda, M.Tatsumisago and T.Minami: "Photoredox Behavior of Methylviologen Doped in Silica Gel Matrices"J.Mater.Chem.. 10[12]. 2765-2768 (2000)

Y.Kotani、A.Matsuda、M.Tatsumisago 和 T.Minami：“硅胶基质中掺杂甲基紫罗碱的光氧化还原行为”J.Mater.Chem.. 10[12]。

T. Kogure: "Formation of TiO_2 Nanocrystallites in Sol-Gel Derived SiO_2-TiO_2 Film"J. Am. Ceram. Soc.. 82・[11]. 3248-3250 (1999)

T. Kogure：“溶胶-凝胶衍生的 SiO_2-TiO_2 薄膜中 TiO_2 纳米晶体的形成”J. Am. 82・[11]。

忠永清治: "低温における超撥水・超親水コーティング膜の作製(総説)"マテリアルインテグレーション. 13・[12]. 69-72 (2000)

Seiji Tadanaga：“低温下超疏水和超亲水涂层的制备（评论）”Materials Integration 13・[12]（2000）。

K. Azuta: "Water and Oxygen Permeability of silica Thin Films Containing Organic Polymers Coated on PET Substrate by the Sol-Gel Method"J. Ceram. Soc. Jpn.. 107・[3]. 293-296 (1999)

K. Azuta：“通过溶胶-凝胶法在 PET 基材上涂覆的含有有机聚合物的二氧化硅薄膜的水和氧渗透性”J. Ceram.. 107・[3]。

K.Tadanaga: "Preparation and Characterization of Super-Water-Repellent Coating Films by the Sol-Gel Method"Topical Issues in Glasses : Photons, Glasses and Coatings. 3. 99-103 (1999)

K.Tadanaga：“通过溶胶-凝胶法制备和表征超防水涂层薄膜”玻璃中的热门问题：光子、玻璃和涂层。