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Preparation method of graphene-based steel anticorrosive coating

An anti-corrosion coating, graphene-based technology, applied in anti-corrosion coatings, coatings, devices for coating liquids on surfaces, etc., can solve problems such as poor anti-corrosion effect of anti-corrosion coatings, achieve excellent anti-corrosion performance, increase stability The effect of bonding

Active Publication Date: 2019-06-21
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP NO 4 ENG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of poor anticorrosion effect of steel structure anticorrosion coating in high salinity seawater environment, and to provide a preparation method of graphene-based steel anticorrosion coating

Method used

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  • Preparation method of graphene-based steel anticorrosive coating
  • Preparation method of graphene-based steel anticorrosive coating
  • Preparation method of graphene-based steel anticorrosive coating

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specific Embodiment approach 1

[0024] Specific embodiment one: the preparation method of a kind of graphene-based steel anticorrosion coating of this embodiment is carried out according to the following steps:

[0025] Step 1: Degrease and derust the steel surface first, and then polish it until bright with a polishing machine;

[0026] Step 2: Apply a layer of underwater curing epoxy resin coating with a thickness of 10 μm to 30 μm on the polished steel surface, and then wait for it to solidify and form;

[0027] Step 3: Dilute the silane coupling agent with distilled water, the volume concentration after dilution is 10-20%, and the dilution time is 10-20 minutes, and then put it in a constant temperature water bath at 25-50°C for standby;

[0028] Step 4: Ultrasonic disperse the aqueous graphene solution for 15-30 minutes for later use;

[0029] Step 5: Mix the diluted silane coupling agent in step 3 with the water-based graphene dispersed in step 4 in a ratio of 1:1 by volume, and stir to obtain a black...

specific Embodiment approach 2

[0035] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the underwater curing epoxy resin is prepared by component A and component B according to the mass ratio of 100:(20~35), wherein component A is Epoxy resin, component B is an underwater curing agent. Others are the same as the first embodiment.

specific Embodiment approach 3

[0036] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the underwater curing epoxy resin is prepared from component A and component B at a mass ratio of 100:21. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method of a graphene-based steel anticorrosive coating, and relates to a preparation method of the graphene-based anticorrosive coating with excellent isolation and blocking effects on an erosion medium. The preparation method effectively solves the problem of poor corrosion resistance of a built steel structure anticorrosive coating in a high-salinity seawater environment. According to the method, the surface of steel is subjected to oil removal, rust removal and polishing treatment, then a epoxy resin coating is applied on the surface of the polished steel by using underwater curing epoxy resin, by adopting a silane coupling agent, a silane coupling agent aqueous graphene composite layer and an oily graphene layer transition process, the anticorrosive coating with excellent corrosion resistance which can be applied in a tidal zone, a splash zone and a high-humidity environment is obtained, and the single-channel graphene-based steel anticorrosivecoating can have the effects of improving self-corrosion potential by 100 mV, and reducing the corrosion current density by 1 order of magnitude. The method is applicable to the field of civil engineering.

Description

technical field [0001] The invention relates to a preparation method of a graphene-based steel anticorrosion coating. Background technique [0002] In the current and future development time, steel structure plays an extremely important role as an important structural form in the field of building structure and civil engineering, and its corrosion resistance is also the key to determining its service life. In recent years, a large number of cross-sea bridges, offshore steel structures, and coastal infrastructures have been built in my country. The demand for steel for military ships and ships has increased significantly. At the same time, the amount of steel that cannot be used due to steel corrosion and scrap has increased, causing a huge national economy loss. For steel and reinforced concrete structures located in coastal environments, the contact of corrosion factors such as chloride ions, water molecules, and oxygen molecules with the surface of the steel base is the mo...

Claims

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Application Information

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IPC IPC(8): B05D5/00B05D7/14B05D3/00C09D5/08C09D1/00C09D183/04C09D163/00
Inventor 程为王保良盖青山唐小军于海洲胡利平尤春颖赵多仓赵健孙刚乔国福张锦秋宋鹏宇
Owner CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP NO 4 ENG
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