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Preparation method of sulfonated modified graphene oxide-based super-hydrophobic stainless steel surface

A graphene-based, stainless steel technology, applied in the direction of electrolytic inorganic material coating, etc., can solve the problems of short life, easy to be damaged, and long preparation time of super-hydrophobic structures, achieve excellent protection effect, excellent super-hydrophobic performance, and simple preparation method Effect

Inactive Publication Date: 2020-12-11
BINZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, stearic acid is commonly used to etch metal materials to construct super-hydrophobic structures on the surface of metal materials. However, this super-hydrophobic structure has a short lifespan and is easily destroyed by long-term immersion in corrosive media.
However, the currently reported superhydrophobic surface preparation methods either require harsh equipment or take too long to prepare.

Method used

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  • Preparation method of sulfonated modified graphene oxide-based super-hydrophobic stainless steel surface
  • Preparation method of sulfonated modified graphene oxide-based super-hydrophobic stainless steel surface
  • Preparation method of sulfonated modified graphene oxide-based super-hydrophobic stainless steel surface

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Embodiment 1

[0025] The present invention proposes a method for preparing a sulfonated modified graphene oxide-based superhydrophobic stainless steel surface, the preparation method comprising the following steps:

[0026] (1) Stainless steel pretreatment:

[0027] The stainless steel is first polished with 60 mesh, 120 mesh, 320 mesh, 600 mesh and 1200 mesh sandpaper to remove impurities and oxides on the surface, and then ultrasonically cleaned with absolute ethanol and acetone for 10 minutes to remove organic matter, and then treated with N 2 Blow dry for later use;

[0028] (2) Preparation of superhydrophobic structure by electrodeposition:

[0029] The electrolyte formula is composed of sulfonated modified graphene oxide, linolenic acid and absolute ethanol, and its mass fractions are: 20% sulfonated modified graphene oxide, 20% linolenic acid, and 60% absolute ethanol. The preparation method of the superhydrophobic stainless steel surface proposed by the present invention is a cons...

Embodiment 2

[0032] The present invention proposes a method for preparing a sulfonated modified graphene oxide-based superhydrophobic stainless steel surface, the preparation method comprising the following steps:

[0033] (1) Stainless steel pretreatment:

[0034] The stainless steel is first polished with 60 mesh, 120 mesh, 320 mesh, 600 mesh and 1200 mesh sandpaper to remove impurities and oxides on the surface, and then ultrasonically cleaned with absolute ethanol and acetone for 10 minutes to remove organic matter, and then treated with N 2 Blow dry for later use;

[0035] (2) Preparation of superhydrophobic structure by electrodeposition:

[0036] The electrolyte formula is composed of sulfonated modified graphene oxide, linolenic acid and absolute ethanol, and its mass fractions are: 30% of sulfonated modified graphene oxide, 30% of linolenic acid, and 40% of absolute ethanol. The preparation method of the superhydrophobic stainless steel surface proposed by the present invention ...

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Abstract

The invention belongs to the technical field of functional materials, and relates to a preparation method of a sulfonated modified graphene oxide-based super-hydrophobic stainless steel surface. The preparation method specifically comprises the step of preparing a super-hydrophobic structure by adopting an electro-deposition method. Compared with the prior art, the preparation method has the advantages that on one hand, a stainless steel surface rough structure is constructed by etching stainless steel in a linolenic acid medium, on the other hand, the lamellar barrier function of the sulfonated modified graphene oxide is fully exerted, the corrosion inhibition efficiency reaches 97% or above, and the method has wide industrial application prospects.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a preparation method for a sulfonated modified graphene oxide-based superhydrophobic stainless steel surface. Background technique [0002] As a general-purpose metal material, stainless steel is widely used in chemical industry, electric power, navigation and weapons because of its good corrosion resistance, heat resistance, low temperature strength and mechanical properties, good thermal workability such as stamping and bending, and no heat treatment hardening and other fields, making heat exchange equipment, containers, valves, pumps, turbines, shafts and other machinery and components. However, severe corrosion can occur when exposed to aggressive media, especially environments containing chloride ions. [0003] In recent years, inspired by the "lotus leaf effect", the superhydrophobic surface with a contact angle greater than 150° with water droplet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D9/04C25D5/36
CPCC25D5/36C25D9/04
Inventor 陈宇
Owner BINZHOU UNIV