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有机硅改性水性聚氨酯涂层的制备及其防污性能

李敏 韩龙 郭旭虹 王杰

李敏, 韩龙, 郭旭虹, 王杰. 有机硅改性水性聚氨酯涂层的制备及其防污性能[J]. 功能高分子学报, 2021, 34(4): 379-386. doi: 10.14133/j.cnki.1008-9357.20201231001
引用本文: 李敏, 韩龙, 郭旭虹, 王杰. 有机硅改性水性聚氨酯涂层的制备及其防污性能[J]. 功能高分子学报, 2021, 34(4): 379-386. doi: 10.14133/j.cnki.1008-9357.20201231001
LI Min, HAN Long, GUO Xuhong, WANG Jie. Preparation and Antifouling Properties of Silicon-Modified Waterborne Polyurethane Coatings[J]. Journal of Functional Polymers, 2021, 34(4): 379-386. doi: 10.14133/j.cnki.1008-9357.20201231001
Citation: LI Min, HAN Long, GUO Xuhong, WANG Jie. Preparation and Antifouling Properties of Silicon-Modified Waterborne Polyurethane Coatings[J]. Journal of Functional Polymers, 2021, 34(4): 379-386. doi: 10.14133/j.cnki.1008-9357.20201231001

有机硅改性水性聚氨酯涂层的制备及其防污性能

doi: 10.14133/j.cnki.1008-9357.20201231001
基金项目: 国家自然科学基金(51403062)
详细信息
    作者简介:

    李敏:李 敏(1994—),女,硕士生,主要从事硅改性聚氨酯防污涂料的研究。E-mail:limin4750@163.com

    通讯作者:

    王 杰,E-mail:jiewang2010@ecust.edu.cn

  • 中图分类号: TQ637

Preparation and Antifouling Properties of Silicon-Modified Waterborne Polyurethane Coatings

  • 摘要: 以甲苯二异氰酸酯(TDI)、聚己二酸-1,4-丁二醇酯(PCL2000)和羟基硅油(PDMS)为主要原料,合成了一系列有机硅改性的水性聚氨酯(PU)涂层。采用红外光谱、粒径分析、差示扫描量热、热重分析、接触角分析、偏光显微分析等表征了材料的结构与性能。将涂覆了改性PU涂层的面板浸泡在河水中,对比了不同质量分数PDMS的PU涂层的实际防污效果。结果表明:随着w(PDMS)的增加,涂层的热稳定性增加,表面自由能逐渐降低至13.87 mJ/m2;PDMS的引入降低了PU涂层的弹性模量和玻璃化转变温度并增强了涂层的疏水性。河水挂板测试表明:PDMS改性的PU涂层具有良好的防污性能;经过计算验证了PDMS改性PU涂层的防污性能可以由涂层的弹性模量与表面自由能乘积的平方根来预测。

     

  • 图  1  PDMS改性PU的合成路线

    Figure  1.  Synthesis process of PDMS modified PU

    图  2  改性PU乳液的粒径及PDI

    Figure  2.  Particle size and PDI of modified PU emulsion

    图  3  样品的红外谱图

    Figure  3.  FT-IR spectra of samples

    图  4  PU和PUSi-4的DSC曲线

    Figure  4.  DSC thermograms of PU and PUSi-4

    图  5  样品的TGA曲线

    Figure  5.  TGA curves of samples

    图  6  样品的吸水率

    Figure  6.  Swelling ratios of samples

    图  7  (a)涂层表面偏光显微镜照片及涂层面板在河水中浸泡后的照片;(b)涂层的防污模型

    Figure  7.  (a)Images of coating surface under the polaring microscope and photographs of the coating panels submerged in river; (b)Antifouling model of the coating

    表  1  样品的力学性能、接触角以及表面能

    Table  1.   Mechanical properties, contact angle and surface energy of samples

    SampleTensile strength/MPaEnlongation at break/%Elastic modulus/MPaAWE/
    (°)
    ADC/
    (°)
    AEC/
    (°)
    γ/
    (mJ·m−2
    PU5.912889.3980.251.658.132.20
    PUSi-14.442408.5498.867.575.223.23
    PUSi-23.372123.64104.473.385.818.72
    PUSi-32.321840.22109.285.290.314.37
    PUSi-41.331650.13110.386.391.513.87
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-12-31
  • 网络出版日期:  2021-04-09
  • 刊出日期:  2021-07-08

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