Transparent super-hydrophobic coating as well as preparation method and application thereof

A super-hydrophobic coating and transparent technology, which is applied in the field of preparation of transparent super-hydrophobic coatings, can solve the problems of easy aggregation of nanoparticles, limitation of transparent super-hydrophobic coatings, low light transmittance of super-hydrophobic coatings, etc., to achieve improved transparency The effect of light rate and excellent comprehensive performance

Active Publication Date: 2018-06-01
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, nano-particles are commonly used to construct micro-nano rough structures in the preparation of transparent super-hydrophobic coatings. Nano-particles are easy to agglomerate during the ...

Method used

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  • Transparent super-hydrophobic coating as well as preparation method and application thereof
  • Transparent super-hydrophobic coating as well as preparation method and application thereof
  • Transparent super-hydrophobic coating as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] a. Core / shell structure PMMA / SiO 2 Synthesis

[0032] 20mM tetraethyl orthosilicate is the precursor of silica, adding PMMA microspheres of soap-free emulsion polymerization, adjusting the pH value to 11.3 with ammonia water, reacting at room temperature for 12h, and synthesizing PMMA / SiO with core / shell structure 2 Microspheres, the product was centrifuged at 6000rpm and dried at 80°C for 12h.

[0033] b.PMMA / SiO2 2 Hydrophobic Treatment of Composite Microspheres

[0034] Add 1H, 1H, 2H, 2H perfluorooctyltriethoxysilane, PMMA / SiO in ethanol at room temperature 2 The micro-nanocomposite material was stirred vigorously, reacted for 6h, and finally formed a 0.02g / ml hydrophobic suspension.

[0035] c. Preparation of superhydrophobic coating

[0036] Use a ZBQ square wet film applicator, select one side with a thickness of 100 μm, evenly coat PDMS on a glass substrate, cure at room temperature for 10 minutes, and then use an OSP-100 squeegee to coat the fluorinated PM...

Embodiment 2

[0038] a. Core / shell structure PMMA / SiO 2 Synthesis

[0039] 20mM tetraethyl orthosilicate is the precursor of silica, adding PMMA microspheres of soap-free emulsion polymerization, adjusting the pH value to 11.3 with ammonia water, reacting at room temperature for 12h, and synthesizing PMMA / SiO with core / shell structure 2 The microspheres were centrifuged at 6000rpm and dried at 80°C for 12h.

[0040] b.PMMA / SiO2 2 Hydrophobic Treatment of Composite Microspheres

[0041] Add 1H, 1H, 2H, 2H perfluorooctyltriethoxysilane, PMMA / SiO in ethanol at room temperature 2 The micro-nano composite material was stirred vigorously, reacted for 6h, and finally formed a 0.03g / ml hydrophobic suspension.

[0042] c. Preparation of superhydrophobic coating

[0043] Use a ZBQ square wet film applicator, select one side with a thickness of 200 μm, and evenly coat polydimethylsiloxane on the glass substrate, and then cure the glass at room temperature for 10 minutes, and then use an OSP-100 s...

Embodiment 3

[0045] a. Core / shell structure PMMA / SiO 2 Synthesis

[0046] 20mM tetraethyl orthosilicate is the precursor of silica, adding PMMA microspheres of soap-free emulsion polymerization, adjusting the pH value to 11.3 with ammonia water, reacting at room temperature for 12h, and synthesizing PMMA / SiO with core / shell structure 2 The microspheres were centrifuged at 6000rpm and dried at 80°C for 12h.

[0047] b.PMMA / SiO2 2 Hydrophobic Treatment of Composite Microspheres

[0048] Add 1H, 1H, 2H, 2H perfluorooctyltriethoxysilane, PMMA / SiO in ethanol at room temperature 2 The micro-nano composite material was stirred vigorously, reacted for 6h, and finally formed a 0.04g / ml hydrophobic suspension.

[0049] c. Preparation of superhydrophobic coating

[0050] Use a ZBQ square wet film applicator, select one side with a thickness of 300 μm, and evenly coat PDMS on the glass substrate, then cure the glass at room temperature for 10 minutes, and then use an OSP-100 squeegee to coat the ...

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Abstract

The invention discloses a transparent super-hydrophobic coating as well as a preparation method and application thereof. The preparation method comprises the following steps that (1) polymethyl methacrylate/silicon dioxide microspheres with core/shell structures are subjected to modified treatment by using fluoroalkyl silane so as to form a hydrophobic polymethyl methacrylate/silicon dioxide suspension; and (2) a glass substrate is uniformly coated with a polydimethylsiloxane adhesive, then the polymethyl methacrylate/silicon dioxide suspension is deposited on polydimethylsiloxane by using a scraping rod, and finally, a sample is solidified at room temperature so as to obtain the transparent super-hydrophobic coating. The preparation method for the transparent super-hydrophobic coating issimple; and the transparent super-hydrophobic coating has high light transmittance and good hydrophobic performance and can be applied to the surfaces of various materials.

Description

technical field [0001] The invention belongs to the technical field of functional coatings, in particular to a method for preparing a transparent super-hydrophobic coating with self-cleaning performance on a glass substrate. Background technique [0002] It is a difficult problem to artificially synthesize coatings with high transparency and superhydrophobicity. Among them, the superhydrophobic surface is a surface with a surface contact angle greater than 150° and a rolling angle less than 10°; high transparency means high light transmittance in the visible light range. The surface must have a high roughness to obtain a high contact angle, but increased roughness reduces light transmittance due to light scattering. Light scattering is related to the roughness of the material surface and the refractive index. Therefore, it is particularly important to accurately control the roughness and refractive index of the coating surface to prevent light scattering to prepare a high ...

Claims

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Application Information

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IPC IPC(8): C03C17/42C03C17/30
CPCC03C17/009C03C17/30C03C17/42
Inventor 王斌苏琴琴梁彩珍程菲冯颖
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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