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Marine antifouling coating on surface of copper alloy part and preparation method thereof

A technology for marine anti-fouling and components, applied in metal material coating process, coating, solid-state diffusion coating, etc., can solve the complex preparation process of cuprous oxide, difficulty in controlling the shape and structure, and poor anti-fouling effect, etc. problems, to achieve the effect of easy large-scale industrial production, good antifouling effect and low price

Active Publication Date: 2021-07-30
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, most of the existing coating preparation methods need to add cuprous oxide as an additive to the coating to prepare a coating on the surface of the parts to be treated to achieve an antifouling effect. At present, it has been applied to the surface of parts such as ship hulls and offshore platform conduits. The preparation of cuprous oxide in this coating preparation method mainly has the disadvantages of complex preparation process, difficulty in controlling the shape and structure, more intermediate reagents required, high cost, and environmental pollution.
In addition, due to its complex structure and characteristics of moving parts, related coating applications are rarely seen on ship propellers, seawater pipelines and valves. Currently, such parts are made of copper alloy materials with high copper content and are in contact with seawater Finally, copper ions are produced by electrochemical action to play an antifouling effect, but the antifouling effect is not as good as that of cuprous oxide antifouling coating, so a new antifouling coating preparation process with good antifouling effect and simple and efficient is urgently needed

Method used

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  • Marine antifouling coating on surface of copper alloy part and preparation method thereof
  • Marine antifouling coating on surface of copper alloy part and preparation method thereof

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preparation example Construction

[0030] A method for preparing a marine antifouling coating on the surface of a copper alloy part provided by an embodiment of the present invention adopts such as figure 1 The shown device is carried out, specifically comprises the following steps:

[0031] Step (1): Place the copper alloy parts on the reaction platform of the reaction chamber, close the inlet and outlet of the reaction chamber, use a vacuum pump to evacuate the reaction chamber, and remove the air to make the vacuum degree reach 1×10 -4 Pa.

[0032] Step (2): After the vacuum degree meets the requirements, turn off the vacuum pump, open the inlet and outlet of the reaction chamber, and feed N into the reaction chamber. 2 gas and keep flowing N 2 , so that N 2 fill the reaction chamber;

[0033] Step (3): Heating the reaction chamber through a resistance wire, and after the temperature rises to 600°C to 1000°C, preferably 800°C to 900°C, pass O into the reaction chamber 2 and N 2 , under the nitrogen and...

Embodiment 1

[0042] Step (1): Select a copper block with a size of 10mm×10mm×2mm. The surface of the copper block is polished. After the treatment, the copper surface is cleaned with deionized water, dried and placed in a reaction chamber for use. Close the inlet and outlet of the reaction chamber, and evacuate through the vacuum pump to make the vacuum degree reach 1×10 -4 Pa.

[0043] Step (2): turn off the vacuum pump, open the inlet and outlet of the reaction chamber, and pass N at a rate of 100 sccm 2 , the time is maintained for half an hour, and the N in the reaction chamber is kept 2 ;

[0044] Step (3): Keep N in the reaction chamber 2 , the reaction chamber is heated by a resistance wire, and the temperature is raised at a rate of 40°C / min, so that the temperature reaches 600°C. After reaching the set temperature, feed oxygen and N 2 Two gases, O 2 The flow rate is 1 sccm, N 2 The flow rate is 100 sccm. Under nitrogen and oxygen mixed atmosphere and set temperature, keep ...

Embodiment 2

[0047] Step (1): Select a copper alloy bar with a size of 300mm×10mm×5mm. The surface of the sample is polished. After the treatment, the copper surface is cleaned with deionized water, dried and placed in the reaction chamber for later use. Close the inlet and outlet of the reaction chamber, and evacuate through the vacuum pump to make the vacuum degree reach 1×10 -4 Pa.

[0048] Step (2): turn off the vacuum pump, open the inlet and outlet of the reaction chamber, and pass N at a rate of 100 sccm 2 , the time is maintained for half an hour, and the N in the reaction chamber is kept 2 ;

[0049] Step (3): Keep N in the reaction chamber 2 , the reaction chamber is heated by a resistance wire, and the temperature is raised at a rate of 25°C / min, so that the temperature reaches 900°C. After reaching the set temperature, two gases, oxygen and N2, are introduced, O 2 The flow rate is 3sccm, N 2 The flow rate is 100 sccm. Under nitrogen and oxygen mixed atmosphere and set te...

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Abstract

The invention belongs to the field of antifouling coating preparation, and particularly discloses a marine antifouling coating on the surface of a copper alloy part and a preparation method thereof. The preparation method comprises the following steps that the copper alloy part is placed in a reaction chamber, and the temperature is increased to 600-1000 DEG C; and then O2 is introduced into the reaction chamber, the O2 reacts with the copper alloy part, Cu2O is generated on the surface of the copper alloy part, and preparation of the marine antifouling coating on the surface of the copper alloy part is completed. According to the marine antifouling coating on the surface of the copper alloy part and the preparation method thereof, oxygen is directly introduced at the high temperature, cuprous oxide is directly generated on the surface of the copper alloy part, the process applicability is wide, the universality is high, the required raw materials are economical and environmentally friendly, and the surface with the antifouling performance is directly obtained after preparation of the part is completed.

Description

technical field [0001] The invention belongs to the field of antifouling coating preparation, and more specifically relates to a marine antifouling coating on the surface of copper alloy parts and a preparation method thereof. Background technique [0002] Copper is a metallic element widely used in electrical, electronics, construction and many other industries. The binary oxide of copper, cuprous oxide, is a typical P-type semiconductor. In addition to extensive research and application in lithium-ion batteries, catalysts, red glass and other fields, cuprous oxide is a commercial application One of the marine antifouling coating additives. Regarding its antifouling mechanism, the main reason is that the dissolution of cuprous oxide in seawater can separate soluble copper ions or cuprous ions, which can effectively inactivate the enzymes that some microorganisms in seawater depend on for survival or deteriorate and precipitate other biological proteins. , so as to achieve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/12
CPCC23C8/12
Inventor 杨帅李康夏卫生
Owner HUAZHONG UNIV OF SCI & TECH
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