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Method for preparing lamellar super-hydrophobic zinc materials through electroplating with natural woods as templates

A lamellar, wood technology, applied in the field of super-hydrophobic material preparation, can solve the problems of loss of multi-level complexity of the original template structure, fragile blade template, weak mechanical strength, etc., and achieve excellent super-hydrophobic performance, simple method and service life. long effect

Inactive Publication Date: 2019-04-26
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these plant leaf templates will lose part of the microstructure during the sintering process. For example, the nano-scale lamellar flakes on the surface of the palm leaf will no longer exist after vacuum sintering, and the multi-level and complex structure of the original template will be lost to a certain extent. Degree (Chang L, Wang T, Kong J, et al.Preparation and hydrophobicities of biomorphic ZnO based on carbon derived from indicalamusleaf template[J].Advances in Applied Ceramics,2013,112(7):419-423.)
Chen Kai et al. prepared a superhydrophobic zinc surface on the carbonized blade carbon by electroplating. Although the zinc formed a finer granular structure on the micron-sized papillae, the blade template was fragile after carbonization, and the resulting mechanical strength was weaker. Weak (Wang T, Chen K, Sun X, et al. Preparation of a Super-Hydrophobic Zinc Coating with a Hierarchical Structure Inherited from the Indicalamus Leaf through Electroplating[J]. Advanced Materials Interfaces, 2018.)

Method used

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  • Method for preparing lamellar super-hydrophobic zinc materials through electroplating with natural woods as templates
  • Method for preparing lamellar super-hydrophobic zinc materials through electroplating with natural woods as templates
  • Method for preparing lamellar super-hydrophobic zinc materials through electroplating with natural woods as templates

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Experimental program
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Effect test

Embodiment 1

[0038] Step 1, placing the white pine in an argon atmosphere furnace and heating it to 1000°C at a heating rate of 2°C / min to obtain a carbon material with a grid porous structure;

[0039] Step 2, using the porous carbon material as the cathode electrode of the electrolytic cell, electroplating in a zinc sulfate solution, the concentration of the zinc sulfate solution is 0.5mol / L, and the current density is 0.05A / cm 2 , control the electroplating time to 120s, and obtain the lamellar zinc surface;

[0040] Step 3, soak the surface zinc-plated material in an isopropanol solution with a volume fraction of heptadecafluorodecyltriethoxysilane of 14%, take it out and dry it after soaking for 7 days, and obtain a lamellar superhydrophobic zinc material .

[0041] figure 1 It is a scanning electron microscope image of the surface microstructure of white pine, showing the orderly arrangement of porous structures on the surface of white pine.

[0042] figure 2 It is the physical pi...

Embodiment 2

[0048] Step 1, placing white pine wood in an argon atmosphere furnace and heating it to 900°C at a heating rate of 4°C / min to prepare a carbon material with a wood porous structure;

[0049] Step 2, the carbon material is used as the cathode electrode of the electrolytic cell, and electroplating is carried out in a zinc sulfate solution, the concentration of the zinc sulfate solution is 0.7mol / L, and the current density is 0.2A / cm 2 , control the electroplating time to 100s, and obtain a lamellar zinc surface;

[0050] Step 3, immerse the surface galvanized material in a 20% isopropanol solution with a volume fraction of heptadecylfluorodecyltriethoxysilane, take it out after soaking for 11 days, and dry it to obtain a lamellar superhydrophobic zinc material , The contact angle reaches 151°.

Embodiment 3

[0052] Step 1, placing white pine wood in an argon atmosphere furnace and heating it to 800°C at a heating rate of 2°C / min to prepare a carbon material with a wood porous structure;

[0053] Step 2, the carbon material is used as the cathode electrode of the electrolytic cell, and electroplating is carried out in a zinc sulfate solution, the concentration of the zinc sulfate solution is 0.5mol / L, and the current density is 0.2A / cm 2 , control the electroplating time to 60s to obtain a lamellar zinc surface;

[0054] Step 3, immerse the galvanized material on the surface in a 17% isopropanol solution with a volume fraction of heptadecafluorodecyltriethoxysilane, take it out after soaking for 8 days, and dry it to obtain a lamellar superhydrophobic zinc material , The contact angle reaches 152°.

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Abstract

The invention discloses a method for preparing lamellar super-hydrophobic zinc materials through electroplating with natural woods as templates. In the method, white pine woods are used as the templates for high-temperature sintering under non-oxidized atmosphere to obtain carbon materials with porous structures; zinc layers are electroplated on the surfaces of the carbon materials by adopting anelectroplating method to obtain lamellar zinc composite surfaces; and the zinc surfaces are modified by heptadecyl triethoxy silane to obtain the super-hydrophobic zinc materials. The prepared zinc materials use the porous structures of the white pine woods as substrates; rough structures are modified on the hole structures; and through the classified structures, the zinc surfaces achieve excellent super-hydrophobic performance, improve the water absorption resistance and the corrosion resistance of zinc, and prolong the service life of the zinc materials.

Description

technical field [0001] The invention belongs to the technical field of preparation of super-hydrophobic materials, and relates to a method for preparing lamellar super-hydrophobic zinc materials by electroplating using natural wood as a template. Background technique [0002] Zinc is a light gray transition metal with a silvery white appearance. It has an indelible position in battery manufacturing in modern industry (the surface of the battery is zinc skin), so zinc and its alloys are widely used in industrial production. The chemical properties of zinc are active. In the air at room temperature, a thin and dense basic zinc carbonate film is formed on the surface, which can prevent further oxidation. Generally, when zinc-containing products (without protective film) are in the air (or burnt and heated) for a period of time, they will react with oxygen and water in the air to form a zinc oxide layer, the main component of which is zinc oxide. Effectively ensure the corrosio...

Claims

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Application Information

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IPC IPC(8): C25D5/54C25D3/22C25D5/48
CPCC25D3/22C25D5/48C25D5/54
Inventor 王天驰徐芹芹孔见韦正季廷威张明水
Owner NANJING UNIV OF SCI & TECH