Preparation of Silicone Modified Polyurethane/Nano-SiO<sub>2</sub> Composite Superhydrophobic Coating

Feng-ming Qin; Xiang-yu Li; Jin-yan Wang; Xi-gao Jian

doi:10.11777/j.issn1000-3304.2021.21038

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Preparation of Silicone Modified Polyurethane/Nano-SiO₂ Composite Superhydrophobic Coating

Research Article | 更新时间：2023-05-22

- Preparation of Silicone Modified Polyurethane/Nano-SiO₂ Composite Superhydrophobic Coating
- ACTA POLYMERICA SINICA Vol. 52, Issue 9, Pages: 1165-1173(2021)
- 作者机构：
  
  大连理工大学高分子材料系大连 116024
- 作者简介：
  
  Jin-yan Wang, E-mail: wangjinyan@dlut.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2021.21038
  CLC：
- Published：20 September 2021，
  
  Published Online：21 July 2021，
  
  Received：01 February 2021，
  
  Revised：18 February 2021，
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秦凤鸣,李香玉,王锦艳等.有机硅改性聚氨酯/纳米SiO₂复合超疏水涂层的制备[J].高分子学报,2021,52(09):1165-1173.

Qin Feng-ming,Li Xiang-yu,Wang Jin-yan,et al.Preparation of Silicone Modified Polyurethane/Nano-SiO₂ Composite Superhydrophobic Coating[J].ACTA POLYMERICA SINICA,2021,52(09):1165-1173.
秦凤鸣,李香玉,王锦艳等.有机硅改性聚氨酯/纳米SiO₂复合超疏水涂层的制备[J].高分子学报,2021,52(09):1165-1173. DOI： 10.11777/j.issn1000-3304.2021.21038.

Qin Feng-ming,Li Xiang-yu,Wang Jin-yan,et al.Preparation of Silicone Modified Polyurethane/Nano-SiO₂ Composite Superhydrophobic Coating[J].ACTA POLYMERICA SINICA,2021,52(09):1165-1173. DOI： 10.11777/j.issn1000-3304.2021.21038.

摘要

以4

4'-二苯基甲烷二异氰酸酯(MDI)、聚四氢呋喃醚二醇(PTMEG)、羟基封端的聚二甲基硅氧烷(HO-PDMS)、1

4-丁二醇(BDO)为原料，合成了有机硅改性的聚氨酯溶液，通过核磁共振、红外光谱技术对其结构进行表征，并研究了羟基硅油加入量对聚氨酯热稳定性、疏水性的影响. 以有机硅改性的聚氨酯溶液为基体、含氟硅烷偶联剂改性的纳米二氧化硅颗粒为填料，喷涂制备超疏水涂层，研究了填料添加量对复合涂层疏水性的影响. 结果表明：当硅油加入量为9 wt%，填料加入量为60 wt%时，复合涂层性能最优，水接触角为153.3°，滞后角为6.3°. 经过200 ℃加热1 h后，仍然具有大于150°的水接触角. 对复合涂层进行磨损实验与防冰测试，结果表明：该复合涂层在磨损过程中，在基底暴露之前，整个涂层基体都具有超疏水性；并且该涂层能有效降低结冰温度，延长结冰时间，具有良好的防冰性能.

Abstract

A silicone modified polyurethane (SiPU) was synthesized with 4

‍4'-diphenylmethane diisocyanate (MDI)

polytetrahydrofuran ether glycol (PTMEG)

hydroxyl terminated polydimethylsiloxane (HO-PDMS)

4-butanediol (BDO) as raw materials and its structure was characterized by hydrogen nuclear magnetic resonance (

H-NMR) and Fourier transform infrared spectroscopy (FTIR). The effect of HO-PDMS content on the thermal stability and hydrophobicity of polyurethane was investigated by thermogravimetric analysis (TGA) and water contact angle (WCA) test. The results showed that the SiPU coating had the best performances when the content of silicone was 9 wt%. Then the superhydrophobic coating was easily prepared by spraying SiPU as the matrix and fluorosilane modified SiO

nano particles (FAS-SiO

NPs) with different sizes (25 and 15 nm) as fillers. The effects of FAS-SiO

NPs size and content on the hydrophobicity of the composite coating were also studied by WCA test. It was proven that the composite coating possessed the best performances when the mass ratio and content of FAS-SiO

NPs were 4:‍1 and 60 wt%

respectively. The WCA and hysteresis angle were 153.3° and 6.3°

respectively. After heated at 200 °C for 1 h

the composite coating was still superhydrophobic. Moreover

the abrasion test showed that the composite coating was always superhydrophobic before the aluminum alloy substrate was exposed. The anti-icing test result showed that the composite coating decreased the freezing temperature effectively and delayed freezing time obviously

compared with uncoated surface and coating without fillers. Considering that the composite superhydrophobic coating can be prepared easily in large scale by spaying and has great anti-icing performance

it holds great potential in the fields of superhydrophobicity and anti-icing.

关键词

超疏水聚氨酯涂层防冰复合涂层

Keywords

SuperhydrophobicPolyurethane coatingAnti-icingComposite coating

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Preparation of Silicone Modified Polyurethane/Nano-SiO2 Composite Superhydrophobic Coating

DOI：10.11777/j.issn1000-3304.2021.21038

摘要

Abstract

关键词

Keywords

references

Preparation of Silicone Modified Polyurethane/Nano-SiO₂ Composite Superhydrophobic Coating