Preparation method of super-amphiphobic antifouling transparent coating

A transparent coating and super-amphiphobic technology, applied in the coating and other directions, can solve the problems of coating performance degradation, hindering optical transparency, etc., achieve low cost, good self-cleaning effect, and improve the effect of surface roughness

Active Publication Date: 2021-12-07
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increasing the surface roughness to the micron level will hinder optical transparency, while reducing the roughness to the nanometer level will reduce light scattering and increase light transmittance, but the performance of the coating will be greatl...

Method used

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  • Preparation method of super-amphiphobic antifouling transparent coating
  • Preparation method of super-amphiphobic antifouling transparent coating
  • Preparation method of super-amphiphobic antifouling transparent coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Disperse ZnO into a mixed solution containing ethanol and ammonia water, stir for 5 minutes, slowly add TEOS dropwise, stir at 51°C for 4 hours, and finally centrifuge the ZnO / SiO 2 The core-shell structure was separated and washed three times with ethanol and distilled water. By controlling the molar ratio of TEOS and ZnO, ZS particles were obtained.

[0026] Among them, EtOH, TEOS and NH 4 The molar ratio of OH is 114:1:10.8, and the molar ratio of TEOS to ZnO is 0.2.

[0027] (2) Add the sample obtained in step (1) to 0.2M hydrochloric acid aqueous solution for etching until the solution turns from milky white to translucent, and then centrifuge the SiO2 with ZnO as template 2 The particles were separated and washed with distilled water and ethanol until the supernatant was neutral to obtain SZS particles.

[0028] (3) Combine the sample obtained in step (2) with gas-phase SiO 2 After mixing in mass ratio, add to 20ml of ethanol, ultrasonically disperse for 10...

Embodiment 2

[0032] (1) The preparation steps of ZS particles are the same as in Example 1. Among them, EtOH, TEOS and NH 4 The molar ratio of OH is 114:1:10.8, and the molar ratio of TEOS to ZnO is 0.2.

[0033] (2) The preparation steps of SZS particles are the same as in Example 1.

[0034] (3) The preparation steps of the coating sol are the same as in Example 1. Among them, SZS particles and gas phase SiO 2 The mass ratio is 1:3 (the total mass is 0.2g) and mixed.

[0035] (4) The dipping-pulling method was used to plate the coating, and the plated sample was dried in an oven at 80°C for 2 hours to obtain the final superamphiphobic antifouling transparent coating. The highest light transmittance of the coating is 90.53%, and the average light transmittance is 89.14%. The measured contact angle of 5 μL water is 160°, and the rolling angle is less than 3°, the contact angle of ethylene glycol is 144°, and the rolling angle is less than 5°, and the contact angle of edible oil is 133...

Embodiment 3

[0037] (1) The preparation steps of ZS particles are the same as in Example 1. Among them, EtOH, TEOS and NH 4 The molar ratio of OH is 114:1:10.8, and the molar ratio of TEOS to ZnO is 0.2.

[0038] (2) The preparation steps of SZS particles are the same as in Example 1.

[0039] (3) The preparation steps of the coating sol are the same as in Example 1. Among them, SZS particles and gas phase SiO 2 The mass ratio is 1:7 (the total mass is 0.2g) and mixed.

[0040] (4) The dipping-pulling method was used to plate the coating, and the plated sample was dried in an oven at 80°C for 2 hours to obtain the final superamphiphobic antifouling transparent coating. The highest light transmittance of the coating is 93.15%, and the average light transmittance is 91.63%. The measured contact angle of 5 μL water is 165°, the contact angle of ethylene glycol is 145°, and the rolling angles of both are less than 3°, and the contact angle of edible oil is 135°.

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Abstract

The invention belongs to the technical field of coatings, and particularly relates to a preparation method of a super-amphiphobic antifouling transparent coating. The method comprises the following steps: firstly, preparing quadrilateral hollow silicon dioxide particles by a sol-gel method, then mixing the particles with fumed silica to construct a rough structure with concave micropores, and under the action of a silane coupling agent, performing modification by using 1H,1H,2H,2H perfluorodecyl triethoxy silane so as to obtain a super-amphiphobic antifouling transparent coating. The coating prepared by the method shows better light transmittance, has excellent properties of super-amphiphobic property, self-cleaning property, antifouling property and the like, is simple in preparation process, extensible and low in cost, and has a great prospect in the application of solar energy, building glass, optical equipment and the like.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a preparation method of a super-amphiphobic antifouling transparent coating. Background technique [0002] Nowadays, the surface of materials suffers from various pollution problems, and antifouling on the walls of buildings, container surfaces, automotive glass, and optical surfaces such as computers and mobile phones has attracted considerable attention. Long-term use of solar photovoltaic panels will cause dust and air pollutants to accumulate on their surfaces, resulting in a decrease in light transmittance and affecting their performance. For some precision optical instruments, some water stains, dust and other pollutants will be adsorbed on the surface during use, which will seriously affect its performance. Therefore, research on antifouling transparent coatings with amphiphobic and self-cleaning properties has significant practical significance. [0003] St...

Claims

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Application Information

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IPC IPC(8): C03C17/00
CPCC03C17/007C03C17/009C03C17/002C03C2217/478C03C2217/76C03C2218/111C03C2218/365
Inventor 陈若愚石婷贾倩王红宁刘小华
Owner CHANGZHOU UNIV
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