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Metal member coated with anticorrosive coating and preparation method thereof

A technology for metal components and anti-corrosion layers, which is applied in the field of metal components coated with anti-corrosion layers and its preparation, can solve the problems of corrosion resistance, poor corrosion resistance time, and increased cost of metal components, and achieves corrosion resistance of hydrogen sulfide. , The effect of enhanced resistance to external damage and strong stability

Inactive Publication Date: 2008-08-06
王丹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technologies to solve the corrosion problem of metal components generally have the problems of poor corrosion resistance or short corrosion resistance time or high cost, especially the technology using petroleum products. With the rapid rise of petroleum prices, the cost of implementing this technology is also increasing. Increase

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A. React natural crystal sulfur S8 with a modifier to generate polymer monomers, which are then polymerized into high molecular sulfur polymers with a network structure. The specific method is to heat the sulfur to 120°C to melt, mix it with the modifier, and continue heating to form a sulfur polymer. The modified sulfur polymer has strong stability, can resist salt corrosion, and is resistant to the attack of sulfate-reducing bacteria and other microorganisms, and is resistant to hydrogen sulfide corrosion. At the same time, the sulfur polymer has good insulation and can block the conductive corrosion of soil. . Modifiers can be aromatic hydrocarbons, such as styrene, vinyltoluene, methylstyrene, etc., or diene (genus) hydrocarbons or olefinic hydrocarbons, such as: 2,3- Indane, Dicyclopentadiene; Dicyclopentadiene, Dipentene. The modifier may be one or a combination of two or more of the above compounds. The weight of modifier is 2% by weight of sulfur.

[0040] B...

Embodiment 2

[0042]A. The difference from step A in Example 1 is that the sulfur adopts petroleum refining or natural gas desulfurization sulfur, and the weight of the modifier is 40% of the weight of the sulfur. The modification process needs to be heated to 150 ° C with the natural sulfur. The curing agent is mixed and heated continuously to obtain a polymer of sulfur. Then mix inorganic solid powder into the obtained sulfur polymer. The inorganic solid powder is preferably the ash after coal combustion, and the cost is low. You can also choose steel slag quartz sand, ash or construction waste after garbage incineration, etc. The main purpose It is to increase the density and strength of the polymer of sulfur. The weight of the inorganic solid powder is 5% of the weight of the sulfur polymer, and the fineness of the inorganic solid powder is 50 mesh.

[0043] B. Spraying the mixture of the molten sulfur polymer obtained in step A and the inorganic solid powder to the surface of the meta...

Embodiment 3

[0045] A, difference with the step A of embodiment 2 is that the weight of modifier is 3% of the weight of sulfur, and the heating melting temperature of sulfur is 200 ℃; The weight of inorganic solid powder is 50% of the polymer weight of sulfur, The fineness of the inorganic solid powder is 300 mesh.

[0046] B. Coat a layer of resin adhesive on the surface of the metal component. The resin adhesive can be epoxy resin adhesive, polyurethane resin adhesive, unsaturated polyester adhesive, phenolic resin adhesive, acrylate Adhesives or inorganic adhesives, etc. Before the layer formed by the resin binder is solidified, the mixture of the molten sulfur polymer and the inorganic solid powder obtained in step A is sprayed onto the layer formed by the resin binder to form an anti-corrosion layer. The thickness of the anticorrosion layer is 0.2 mm, and 1 / 3 to 2 / 3 of the thickness of the anticorrosion layer is fused with the resin adhesive layer. The resin adhesive layer can incre...

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Abstract

The invention provides a metal component which has corrosion resistance and low cost, and is coated with an anticorrosion layer to solve the problems that an existing metal component does not resist corrosion and an anticorrosion technique has high cost. The anticorrosion layer is coated on the surface of the metal component, the method for coating the anticorrosion layer comprises following steps: firstly, mixing and modifying sulfur and modifying agent to generate sulfur polymer, wherein the weight of the modifying agent is 2%-40% of the weight of the sulfur, secondly, melting the polymer which is obtained in the first step, then, coating on the surface of the metal component, and forming the anticorrosion layer. The method of the invention can be applied in the metal component which is used in sites which happen corrosion easily and the method has good anticorrosion effect and low cost.

Description

technical field [0001] The invention belongs to the anti-corrosion technology of metal components, in particular to a metal component coated with an anti-corrosion layer and a preparation method thereof. Background technique [0002] In industrial production, metal components exposed to various environments often corrode, especially metal components placed underground or in water, this phenomenon is more obvious. Metal components are sensitive to salt, not only acid rain and acidic soil in the atmosphere corrode metal components, but also some microorganisms are also corrosive to metal components. When the pipe trench is backfilled with soil, there is a large amount of oxygen and water, which is conducive to the reproduction of sulfate-reducing bacteria and increases the probability of corrosion damage to the pipe. Hydrogen sulfide is very serious for corrosion of metal pipes in ponded swamps and lowlands. In addition, when the salt content in seawater or soil is high, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F15/00C09D201/02C09D5/08
CPCC23C30/00C09D5/084C23C26/02C23C28/00
Inventor 王丹
Owner 王丹
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