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SiO2-coated ZnO super-hydrophobic coating material with micro-nano coarse structure, and preparation method, application and use method of SiO2-coated ZnO super-hydrophobic coating material

A rough structure, super-hydrophobic technology, applied in the direction of coating, etc., can solve the problems of unfavorable long-term protection and single performance

Inactive Publication Date: 2021-09-07
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to literature records, most of the hydrophobic coating methods that are non-destructive and can be used on the surface of cultural relics are spraying methods. Most of the raw materials for surface protective coatings are organic polymers, which are not conducive to long-term protection and have single performance.

Method used

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  • SiO2-coated ZnO super-hydrophobic coating material with micro-nano coarse structure, and preparation method, application and use method of SiO2-coated ZnO super-hydrophobic coating material
  • SiO2-coated ZnO super-hydrophobic coating material with micro-nano coarse structure, and preparation method, application and use method of SiO2-coated ZnO super-hydrophobic coating material
  • SiO2-coated ZnO super-hydrophobic coating material with micro-nano coarse structure, and preparation method, application and use method of SiO2-coated ZnO super-hydrophobic coating material

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Experimental program
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preparation example Construction

[0026] The preparation method of SiO2@ZnO superhydrophobic coating material with micro-nano-level rough structure of the present invention, the steps include: 1) Powder mixing: mix zinc oxide and silicon dioxide in proportion, according to 4.3-17.5mg / Add an organic solvent to the concentration of ml, and ultrasonically mix for 45-80 minutes; in terms of mass percentage, the amount of zinc oxide added is 30% to 64% of the sum of the mass of zinc oxide and silicon dioxide;

[0027] 2) Cross-linking reaction and surface modification treatment: add silane coupling agent to carry out cross-linking reaction under stirring state, reaction temperature is 28-40°C, stirring time is 45-85min; The mass-to-volume ratio of the volume of the coupling agent added is 0.86-2.5g / ml to determine the volume of the silane coupling agent added;

[0028] Add fluorocarbons in the stirring state to modify the surface to obtain the coating material stock solution, stirring time 2.5-4h; the mass volume ...

Embodiment 1

[0032] 1): powder mixing

[0033] Weigh 200 mg of zinc oxide and 250 mg of silicon dioxide and mix them, add 60 mL of ethanol, and sonicate for 60 min to obtain a mixed solution.

[0034] 2): Cross-linking reaction and surface modification treatment

[0035] Place the mixed solution obtained in step 1) and stir it on a magnetic stirrer at a speed of 500 rpm and a temperature of 35°C. Add 320 μL of silane coupling agent for cross-linking reaction and stir for 60 minutes; then add 330 μL of fluorocarbon for surface modification treatment and magnetically stir After 3.5 hours, the composite stock solution of SiO2@ZnO superhydrophobic coating material with micro-nano-scale rough structure was obtained.

[0036] Spray the prepared SiO2@ZnO superhydrophobic coating material composite stock solution with micro-nano-scale rough structure on cultural relics protection or outdoor and indoor buildings, and its use method:

[0037] Clean and pre-treat the substrates to be coated: substr...

Embodiment 2

[0040] 1): powder mixing

[0041]Weigh 200 mg of zinc oxide and 300 mg of silicon dioxide and mix them, add 62 mL of ethanol, and sonicate for 50 min to obtain a mixed solution.

[0042] 2): Cross-linking reaction and surface modification treatment

[0043] Place the mixed solution obtained in step 1) on a magnetic stirrer for stirring at a speed of 550 rpm and a temperature of 35°C, add 300 μL of silane coupling agent for cross-linking reaction, stir for 60 min; then add 320 μL of fluorocarbon for surface modification treatment, and stir for 3 h , to obtain a composite stock solution of SiO2@ZnO superhydrophobic coating material with micro-nano-scale rough structure.

[0044] Spray the prepared SiO2@ZnO superhydrophobic coating material composite stock solution with micro-nano-scale rough structure on cultural relics protection or outdoor and indoor buildings, and its use method:

[0045] Cleaning and pretreatment of the substrate to be coated: the substrates to be coated, ...

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Abstract

The invention relates to a SiO2-coated ZnO super-hydrophobic coating material with a micro-nano coarse structure, which comprises an inorganic matrix material formed by zinc oxide and silicon dioxide, and is prepared by carrying out surface hydrophobic modification on the inorganic matrix material; zinc oxide and silicon dioxide are mixed to prepare a composite solution, and then a coating material composite stock solution is obtained through a cross-linking reaction and surface modification treatment; and the obtained coating material composite stock solution can be used for cultural relic protection and indoor and outdoor building surface protection. When the coating material is used, a to-be-coated base material needs to be subjected to cleaning pretreatment firstly, and then spraying is conducted. The coating material disclosed by the invention has super-hydrophobicity, high oleophobicity and high stability; and the preparation method is simple, low in cost and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of preparation of novel micro-nano functional materials and interface materials, and specifically relates to a SiO2@ZnO multifunctional coating material with a micro-nano level rough structure, a preparation method, an application and a use method. Background technique [0002] Under the conditions of increasing environmental pollution and man-made destruction, many cultural relics, especially outdoor cultural relics, have been destroyed. Attachment and deposition of microbial spores, oil, etc., resulting in pollution damage. There are 4,296 national key cultural relics protection units, and the protection of cultural relics is imminent. [0003] There are four principles to be followed in the restoration of cultural relics: (1) no change to the original state (2) minimum intervention (3) reversibility (4) recognizability (no distortion). Most of the restoration methods of cultural relics that have been ap...

Claims

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Application Information

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IPC IPC(8): C09D1/00C09D7/63
CPCC09D1/00C09D7/63
Inventor 朱建锋柴玉梅王岗李允峰魏小红王芬罗宏杰
Owner SHAANXI UNIV OF SCI & TECH
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