| 不同晶型CaCO3表面改性及CaCO3/PDMS超疏水涂层的制备 |
| |
| 引用本文： | 罗帅帅,古卫乐,操未青,刘雷鹏,胡攀,田键.不同晶型CaCO3表面改性及CaCO3/PDMS超疏水涂层的制备[J].精细化工,2023,40(8):1727-1733+1741. |
| |
| 作者姓名： | 罗帅帅 古卫乐 操未青 刘雷鹏 胡攀 田键 |
| |
| 作者单位： | 湖北大学材料科学与工程学院,湖北大学材料科学与工程学院,湖北大学材料科学与工程学院,陕西科技大学轻工科学与工程学院,湖北大学材料科学与工程学院,湖北大学 |
| |
| 基金项目： | 广西创新驱动发展专项（2018AA21013）；湖北大学青年科学基金（201911304000001） |
| |
| 摘 要： | 利用硬脂酸钠(NaSt)和油酸钠(NaOL)对文石型和方解石型两种CaCO3粉体进行表面改性，将改性的CaCO3粉体与聚二甲基硅氧烷(PDMS)共混，喷涂得到了CaCO3/PDMS基超疏水涂层。采用XRD、SEM、接触角测量仪对改性CaCO3粉体及超疏水涂层进行测试，考察了不同晶型CaCO3用量对涂层疏水性能的影响，并对超疏水涂层的自清洁性及稳定性进行了评价。结果表明，当NaSt和NaOL用量分别为反应体系CaCO3理论生成质量的5%时，CaCO3粉体改性效果最好，所制备的CaCO3/PDMS涂层疏水性最佳。当CaCO3和PDMS质量比为1.5∶1时，CaCO3/PDMS涂层接触角>150°，具有超疏水性。玻璃板涂层表面的亚甲基蓝污染物可以完全随着液滴被冲走，没有残留，且经过500 m L流速5 m/s的水流冲击，接触角仍达140°以上。
|
| 关 键 词： | 超疏水涂层 碳酸钙 喷涂法 自清洁 稳定性 功能材料 |
| 收稿时间： | 2022/10/21 0:00:00 |
| 修稿时间： | 2023/2/1 0:00:00 |
Surface modification of calcium carbonate with different crystal forms and preparation of CaCO3/PDMS superhydrophobic coating |
| |
| LUO Shuaishuai,GU Weile,CAO Weiqing,LIU Leipeng,HU Pan and TIAN Jian.Surface modification of calcium carbonate with different crystal forms and preparation of CaCO3/PDMS superhydrophobic coating[J].Fine Chemicals,2023,40(8):1727-1733+1741. |
| |
| Authors: | LUO Shuaishuai GU Weile CAO Weiqing LIU Leipeng HU Pan and TIAN Jian |
| |
| Affiliation: | School of Materials Science and Engineering, Hubei University,School of Materials Science and Engineering,Hubei University,School of Materials Science and Engineering,Hubei University,College of bioresources chemical and materials engineering, Shaanxi University of Science and Technology,School of Materials Science and Engineering,Hubei University,Key Laboratory of Green Preparation and Application for Functional Materials,Ministry of Education,School of Materials Science and Engineering,Hubei Engineering Research Center for Green Industrialization Technology of Industrial Waste,Hubei University |
| |
| Abstract: | Abstract: Superhydrophobic coating is a kind of coating with special wettability on the surface. it has received extensive attention and research because of its excellent performance in the fields of self-cleaning, oil-water separation, antibacterial, anti-corrosion, etc. In this paper, sodium stearate (NaSt) and sodium oleate (NaOL) were used to modify the surface of aragonite and calcite CaCO3 powders, and then the modified CaCO3 powders were blended with polydimethylsiloxane (PDMS) to obtain CaCO3/PDMS based superhydrophobic coatings. The results showed that when the content of NaSt and NaOL was 5% of the substance participating in the reaction, the modification effect of CaCO3 powder was the best, and the hydrophobicity of the prepared CaCO3/PDMS coating was the best. At the same time, the influence of the amount of CaCO3 with different crystal forms on the hydrophobicity of the coating was investigated. The results showed that when the mass ratio of CaCO3 to PDMS was 1.5:1, the contact angle of the CaCO3/PDMS coating was>150°, and the coating was super hydrophobic. The test results of its self-cleaning ability and stability showed that the methylene blue pollutants on the surface of the glass plate coating could be completely washed away with the liquid droplets without residue, and the contact angle was still more than 140°under the impact of 500 mL water with a speed of 5 m/s, which showed the durability and stability of the coating working age. |
| |
| Keywords: | superhydrophobic coating calcium carbonate spraying method self-cleaning stability |
|
| 点击此处可从《精细化工》浏览原始摘要信息 |
|
点击此处可从《精细化工》下载全文 |
|
