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材料导报  2022, Vol. 36 Issue (15): 21010272-5    https://doi.org/10.11896/cldb.21010272
  高分子与聚合物基复合材料 |
光致发热材料的超疏水化改性及其对光热转换性能的影响
杜咪咪1, 薛朝华1,*, 郭小静2, 贾顺田1
1 陕西科技大学轻工科学与工程学院,西安 710021
2 陕西科技大学材料科学与工程学院,西安 710021
Superhydrophobicity Modification of Photothermally Induced Materials and Its Effect on Photothermal Conversion Performance
DU Mimi1, XUE Chaohua1,*, GUO Xiaojing2, JIA Shuntian1
1 College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
2 School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
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摘要 以棉纺织品为基材,采用多巴胺(DA)在微米级的纤维表面自聚合形成聚多巴胺(PDA)纳米颗粒,使材料表面形成微/纳粗糙结构并获得光致发热性能,然后使用聚二甲基硅氧烷(PDMS)对纺织品进行处理,利用PDMS的低表面能性质结合材料表面的微/纳结构特性使纺织品获得超疏水性能。采用热红外相机对材料的光热发射性能进行测试分析;采用扫描电子显微镜对材料表面的微观形貌进行观察;采用接触角测量仪对材料表面的疏水性能进行评估考察。结果表明,该材料在1 kW/m2模拟太阳光下照射5 min,其表面温度可达66.2 ℃;制备的纺织品材料的表面水滴接触角高达161°,滚动角低至0.9°。该材料的超疏水性自清洁功能可使其表面免遭污染,从而极大地提高了材料的光热转换性能的持久稳定性。
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杜咪咪
薛朝华
郭小静
贾顺田
关键词:  光热转换  超疏水  自清洁  聚多巴胺(PDA)  聚二甲基硅氧烷(PDMS)    
Abstract: Photothermal coating of polydopamine/polydimethylsiloxane (PDA/PDMS) with superhydrophobicity was fabricated on cotton textile by self-polymerization of dopamine hydrochloride (DA) on the fiber surface. The formed polydopamine (PDA) nanoparticles can not only rough the surface of fibers but also endow the textile photothermal conversion performance, followed by post-treatment with polydimethylsiloxane (PDMS). The PDMS characteristic of the low surface energy was combined with the micro/nano structure of the material surface, in order to offer the superhydrophobic property to the textiles.Thermal infrared camera was used to test the photothermal properties of the material, scanning electron microscope (SEM) was used to observe the microstructure of the material surface, and the hydrophobic properties of the material surface were evaluated through contact angle measuring instrument. The results show that surface temperature of the textile can reach 66.2 ℃ after 1 kW/m2 simulated sunlight for 5 min, and that the water contact angle of the material is up to 161° with the rolling angle as low as 0.9°. It showed excellent superhydrophobic self-cleaning performance, which protects the photothermal coating from being polluted by dirt so as to guarantee the durability of the photothermal conversion efficiency.
Key words:  photothermal conversion    superhydrophobic    self-cleaning    polydopamine (PDA)    polydimethylsiloxane (PDMS)
出版日期:  2022-08-10      发布日期:  2022-08-15
ZTFLH:  TS116  
基金资助: 国家自然科学基金(51572161);国家科技部重大项目(2017YFB0307700)
通讯作者:  *xuechaohua@126.com   
作者简介:  杜咪咪,2017年本科毕业于咸阳师范学院。现为陕西科技大学轻工科学与工程学院硕士研究生,主要从事光热转换以及超疏水复合材料的研究。
薛朝华,陕西科技大学博士研究生导师。2008年获浙江大学材料科学与工程工学博士学位,2009年赴美国加州大学戴维斯分校从事博士后研究。主要从事超疏水/防水涂层材料、光热转换及能源材料、功能复合材料等方面的研究。在国际学术期刊发表SCI收录论文50余篇。
引用本文:    
杜咪咪, 薛朝华, 郭小静, 贾顺田. 光致发热材料的超疏水化改性及其对光热转换性能的影响[J]. 材料导报, 2022, 36(15): 21010272-5.
DU Mimi, XUE Chaohua, GUO Xiaojing, JIA Shuntian. Superhydrophobicity Modification of Photothermally Induced Materials and Its Effect on Photothermal Conversion Performance. Materials Reports, 2022, 36(15): 21010272-5.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.21010272  或          http://www.mater-rep.com/CN/Y2022/V36/I15/21010272
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