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一种具有自清洁、防冰和辐射制冷性能的E51-PEI-PDMS-SiO2-TiO2多功能复合涂层

肖婷 郎霞 陈思雨 姜礼华 肖业权 李欣义 谭新玉 乔豫龙

肖婷, 郎霞, 陈思雨, 等. 一种具有自清洁、防冰和辐射制冷性能的E51-PEI-PDMS-SiO2-TiO2多功能复合涂层[J]. 复合材料学报, 2024, 42(0): 1-15.
引用本文: 肖婷, 郎霞, 陈思雨, 等. 一种具有自清洁、防冰和辐射制冷性能的E51-PEI-PDMS-SiO2-TiO2多功能复合涂层[J]. 复合材料学报, 2024, 42(0): 1-15.
XIAO Ting, LANG Xia, CHEN Siyu, et al. A multifunctional composite coating based on E51-PEI-PDMS-SiO2-TiO2 with self-cleaing, anti-icing and radiative cooling properties[J]. Acta Materiae Compositae Sinica.
Citation: XIAO Ting, LANG Xia, CHEN Siyu, et al. A multifunctional composite coating based on E51-PEI-PDMS-SiO2-TiO2 with self-cleaing, anti-icing and radiative cooling properties[J]. Acta Materiae Compositae Sinica.

一种具有自清洁、防冰和辐射制冷性能的E51-PEI-PDMS-SiO2-TiO2多功能复合涂层

基金项目: 国家自然科学基金(No. 52007104);能源和环境材料化学学科创新引智基地(D20015)
详细信息
    通讯作者:

    肖婷,博士,副教授,硕士生导师,研究方向为超疏水功能材料 E-mail: 282128651@qq.com

    乔豫龙,博士,讲师,硕士生导师,研究方向为聚合物复合材料制备及其介电、绝缘、导热性能 E-mail: 736537828@qq.com

  • 中图分类号: TQ311; TQ317; TQ02; TB332

A multifunctional composite coating based on E51-PEI-PDMS-SiO2-TiO2 with self-cleaing, anti-icing and radiative cooling properties

Funds: National Natural Science Foundation of China (No. 52007104); The 111 Project (D20015) of China
  • 摘要: 户外电力设施运作时不仅需要降温,在冬季还受冰雪困扰,因此制备具有自清洁、防冰和辐射制冷的多功能复合涂层具有重要的现实意义。本文采用一步刮涂法,制备了由环氧树脂(E51)、聚乙烯亚胺(PEI)、聚二甲基硅氧烷(PDMS)和纳米SiO2、TiO2颗粒组成的多功能复合涂层。通过调节SiO2与TiO2的用量比,涂层能同时实现优异的超疏水性(WCA = 157.25°),良好的防冰性能(延迟结冰时间t1223 s),以及辐射降温效果(在阳光直射下最高冷却至环境温度下13.6 ℃)。涂层制备未使用含氟试剂,对环境友好,其自清洁特性可使其表面避免被外界污染从而保持稳定的防冰和辐射制冷性能。此外,该复合涂层在磨损试验、化学稳定性试验和户外耐候试验中表现出良好的耐久性,有利于涂层在室外的实际应用。

     

  • 图  1  环氧树脂(E51)-聚乙烯亚胺(PEI)-聚二甲基硅氧烷(PDMS)多功能复合涂层的制备工艺

    Figure  1.  Preparation process of the epoxy resin (E51)-polyethyleneimine (PEI)-polydimethylsiloxane (PDMS)-SiO2-TiO2 multifunctional composite coating

    图  2  不同纳米SiO2和TiO2含量下E51-PEI-PDMS-SiO2-TiO2多功能复合涂层(a) WCA、(b) SA变化和SEM图像:(c1-c3) 10∶0,(d1-d3) 9∶1,(e1-e3) 6∶4,(f1-f3) 0∶10;(g) SiO2∶TiO2为10∶0、8∶2和0∶10的E51-PEI-PDMS-SiO2-TiO2多功能复合涂层FTIR光谱图;(h)在600-2000 cm−1范围内的红外光谱图;(i)环氧树脂E51和聚乙烯亚胺PEI的交联反应

    Figure  2.  (a) WCA and (b) SA of the E51-PEI-PDMS-SiO2-TiO2 multifunctional composite coatings with different ratio of SiO2 and TiO2 contents. (c-f) SEM images of composite coatings: (c1-c3) 10∶0, (d1-d3) 9∶1, (e1-e3) 6∶4, (f1-f3) 0∶10. (g) FTIR spectra of E51-PEI-PDMS-SiO2-TiO2 multifunctional composite coatings with SiO2:TiO2 ratios of 10∶0, 8∶2 and 0∶10. (h) FTIR spectra in the 600-2000 cm−1 range. (i) Crosslinking reaction between Epoxy E51 and PEI

    图  3  (a) E51-PEI-PDMS-SiO2-TiO2多功能复合涂料黏度测试装置;(b)涂层表面和对水、果汁、可乐、奶茶和牛奶的拒液性和(c)银镜现象;(d) E51-PEI-PDMS-SiO2-TiO2多功能复合涂层与(e)无涂层的铝基底自清洁效果

    Figure  3.  (a) Viscosity testing device and (b) Liquid repellency of the E51-PEI-PDMS-SiO2-TiO2 multifunctional composite coating surface against water, juice, cola, milk tea, and milk and (c) Silver mirror phenomenon. (d) Self-cleaning effect of the E51-PEI-PDMS-SiO2-TiO2 multifunctional composite coating and (e) bare aluminum substrate without coating.

    图  4  水滴在纳米SiO2和TiO2不同质量比的E51-PEI-PDMS-SiO2-TiO2多功能复合涂层表面的(a)冻结过程;(b)测试装置;(c)冻结时温度变化曲线;(d)除冰力测试和(e)结冰/除冰过程中WCA和SA的变化

    Figure  4.  The changes in WCA and SA during (a) Freezing process, (b) Testing device, (c) Temperature variation curve of the coating during water droplet freezing, (d) De-icing force test and (e) Ice formation/removal process of water droplets on the E51-PEI-PDMS-SiO2-TiO2 multifunctional composite coating with different ratio of SiO2 and TiO2 contents.

    图  5  纳米SiO2和TiO2不同质量比的E51-PEI-PDMS-SiO2-TiO2多功能复合涂层在(a) 2 ~ 16 μm波长范围内的发射率和(b) 0.2 ~ 2.5 μm波长范围内的反射率

    Figure  5.  (a) Spectral emissivity in the wavelength range of 2 to 16 μm. (b) Reflectance in the wavelength range of 0.2 to 2.5 μm of the E51-PEI-PDMS-SiO2-TiO2 multifunctional composite coating with different ratio of SiO2 and TiO2 contents

    图  6  SiO2∶TiO2为10∶0、9∶1、8∶2、7∶3和6∶4的E51-PEI-PDMS-SiO2-TiO2多功能复合涂层(a)测试装置照片;(b-c)试验装置示意图;(d) 2024年4月12日白天(11:09-14:09)温度变化和辐照度;(e-f)ΔT和ΔTmax。(g) 2024年5月12日白天(11:02-14:02)温度变化和辐照度;(h-i)ΔT和ΔTmax。(j) 2024年5月8日夜间(18:52-21:52)温度变化;(k-l)ΔT和ΔTmax

    Figure  6.  (a) Photo of the test devices, (b-c) Schematic diagram of the test device, (d) Temperature variation and during the daytime on April 12, 2024 (11:09-14:09) and (e-f) ΔT (average temperature difference) and ΔTmax (maximum temperature difference), (g) Temperature variation and irradiance during the daytime on May 12, 2024 (11:02-14:02) and (h-i) ΔT and ΔTmax, (j) Temperature variation at night on May 8, 2024 (18:52-21:52) and (k-l) ΔT and ΔTmax of the E51-PEI-PDMS-SiO2-TiO2 multifunctional composite coating with different ratio of SiO2 and TiO2 contents.

    图  7  SiO2:TiO2为10:0、9:1、8:2、7:3和6:4的E51-PEI-PDMS-SiO2-TiO2多功能复合涂层在(a)砂纸磨擦试验;(b-c)40 cm和80 cm高度沙砾冲击试验;(d)胶带剥离试验过程中WCA和SA的变化;(e)附着力等级

    Figure  7.  The changes of WCA and SA during (a) Sandpaper abrasion test. (b-c) Gravel impact test at heights of 40 cm and 80 cm. (d) Tape stripping test of E51-PEI-PDMS-SiO2-TiO2 multifunctional composite coatings with SiO2:TiO2 ratios of 10:0, 9:1, 8:2, 7:3 and 6:4. (e) Adhesion rating

    图  8  SiO2:TiO2为10:0、9:1、8:2、7:3和6:4的E51-PEI-PDMS-SiO2-TiO2多功能复合涂层在(a-b)耐酸碱试验;(c)室外暴露试验过程中WCA和SA的变化;(d)室外暴露试验过程中温度和湿度的变化;(e)经耐候性测试后的防冰测试结果;(f)温差循环试验;(g1-g4)分别为高温、冷冻和酸碱处理后的E51-PEI-PDMS-SiO2-TiO2多功能复合涂层的弯折测试

    Figure  8.  The changes of WCA and SA during (a-b) Acid and alkali resistance test. (c) Outdoor exposure test of E51-PEI-PDMS-SiO2-TiO2 multifunctional composite coatings with SiO2:TiO2 ratios of 10:0, 9:1, 8:2, 7:3 and 6:4. (d) Changes in temperature and humidity during the outdoor exposure test. (e) Results of anti-icing test after weathering test. (f) Temperature cycling test. (g1-g4) The bending tests of E51-PEI-PDMS-SiO2-TiO2 multifunctional composite coating after high temperature, freezing and acid-base treatment was conducted, respectively

    表  1  E51-PEI-PDMS-SiO2-TiO2多功能复合涂料黏度测试结果

    Table  1.   Viscosity testing results of the E51-PEI-PDMS-SiO2-TiO2 multifunctional composite coating

    sample 10∶0 9∶1 8∶2 7∶3 6∶4
    Viscosity/(mPaŸs) 17.8 18.1 18.6 18.2 17.5
    下载: 导出CSV
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  • 收稿日期:  2024-07-22
  • 修回日期:  2024-09-18
  • 录用日期:  2024-09-21
  • 网络出版日期:  2024-10-08

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