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Intelligent nanometer container capable of preventing corrosion of copper and copper alloy, and preparation and application methods thereof

A technology of nano-container and copper alloy, applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the problem of halloysite nanotubes with large size, limited self-healing ability of coating, corrosion inhibition Solve the problems such as small amount of agent loading, achieve good mechanical properties and thermal stability, improve mechanical properties, and achieve the effect of large loading capacity

Inactive Publication Date: 2017-07-07
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as Abdulayev et al. (E. Abdulayev, R.Price, D. Shchukin, Y. Lvov, ACS Applied Materials and Interfaces, 2009, 1,7, 1437-1443) loaded corrosion inhibitor with halloysite nanotubes, and The addition of composite nanotubes to the polymer coating successfully improves the anti-corrosion effect of the coating, but the size of the halloysite nanotubes is larger, the tube wall is thicker, and the loading amount of the corrosion inhibitor is small
Shcukin et al. (D. G. Shchukin, M. Zheludkevich, K. Yasakau, S. Lamaka, M. G. S. Ferreira, H. Möhwald, Advanced Materials, 2006, 18, 1672-1678) used layer-by-layer self-assembly technology in nano-SiO 2 The polyelectrolyte shell layer loaded with corrosion inhibitor is deposited on the surface of the particles, and added to the sol-gel coating to make the coating have self-healing ability, but this method is complicated in process and the loading amount of corrosion inhibitor is very small. Coating has limited self-healing ability
Invention patent [CN 104927583 A] provides a method for preparing an intelligent anti-corrosion coating that can be automatically repaired by silica mesoporous microspheres. However, this coating is only suitable for corrosion protection of steel materials, and the release of corrosion inhibitors Need to rely on metal corrosion to produce pH changes to respond to release, resulting in a certain lag in corrosion protection; during the preparation of nano-silica microspheres, when removing the template agent, it is necessary to use concentrated hydrochloric acid, and repeated washing is required after removal, and the operation steps are relatively cumbersome. ; The loading process of the corrosion inhibitor uses the method of ordinary stirring and adsorption, and the loading amount of the corrosion inhibitor is small

Method used

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  • Intelligent nanometer container capable of preventing corrosion of copper and copper alloy, and preparation and application methods thereof
  • Intelligent nanometer container capable of preventing corrosion of copper and copper alloy, and preparation and application methods thereof
  • Intelligent nanometer container capable of preventing corrosion of copper and copper alloy, and preparation and application methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1—Preparation of mesoporous nano-silica microspheres

[0046] Preparation of Mesoporous Nano-Silica Microspheres Using Triethanolamine as Catalyst

[0047] a Mix cetyltrimethylammonium chloride, water, absolute ethanol, and triethanolamine at a molar ratio of 2:103:47:8, stir magnetically for 10 min, heat to 80°C, and add a certain amount of n- Ethyl silicate, the molar ratio of ethyl orthosilicate to water in the mixture is 6:103, reflux at 80°C for 2 h, centrifuge, dry, and collect nanoparticles;

[0048] b Put the above sample into a crucible and burn it at 550°C for 6 h to decompose cetyltrimethylammonium chloride to obtain mesoporous nano-silica microspheres.

Embodiment 2

[0053] Example 2—Preparation of mesoporous nano-silica microspheres

[0054] Preparation of Mesoporous Nano-Silica Microspheres Using Triethanolamine as Catalyst

[0055] a Mix cetyltrimethylammonium chloride, water, absolute ethanol, and triethanolamine at a molar ratio of 3:100:45:10, stir magnetically for 15 minutes, heat to 85°C, and add a certain amount of n- Ethyl silicate, the molar ratio of ethyl orthosilicate to water in the mixture is 5:100, reflux at 90°C for 2.5 h, centrifuge, dry, and collect nanoparticles;

[0056] b Put the above sample into a crucible and burn it at 600°C for 7 h to decompose cetyltrimethylammonium chloride to obtain mesoporous nano-silica microspheres.

[0057] The mesoporous nano-silica microspheres prepared in Example 2 have a particle diameter between 40-70 nm.

Embodiment 3

[0058] Example 3 - Preparation of mesoporous nano-silica microspheres

[0059] Preparation of Mesoporous Nano-Silica Microspheres Using Triethanolamine as Catalyst

[0060] a Mix cetyltrimethylammonium bromide, water, absolute ethanol, and triethanolamine at a molar ratio of 4:103:50:6, stir magnetically for 12 minutes, heat to 90°C, and add a certain amount of n- Ethyl silicate, the molar ratio of ethyl orthosilicate to water in the mixture is 6:102, reflux at 85°C for 3 h, centrifuge, dry, and collect nanoparticles;

[0061] b Put the above sample into a crucible and burn it at 650°C for 8 h to decompose cetyltrimethylammonium bromide to obtain mesoporous nano-silica microspheres.

[0062] The mesoporous nano-silica microspheres prepared in Example 3 have a particle diameter between 40-70 nm.

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Abstract

The invention provides an intelligent nanometer container capable of preventing corrosion of copper and copper alloy, and preparation and application methods thereof, belonging to the technical field of corrosion prevention. Mesoporous silica microspheres with controllable particle size can be obtained by adjusting preparation conditions; by supporting a corrosion inhibitor reacting with a copper matrix, a protective film can be formed on the surfaces of copper and copper alloy thereof, so as to effectively inhibit the corrosion of the copper and copper alloy thereof; the surface of the mesoporous silica microspheres supported with large-capacity high-efficiency corrosion inhibitor is modified, and after the modified mesoporous silica microspheres are applied to an intelligent self-restoration anti-corrosion coating, not only can the compatibility of the mesoporous silica microspheres with the coating resin be further improved, but also the purpose of automatically controlling release rate of the corrosion inhibitor can be realized, and the purpose of remarkably improving the prevention effect of the common organic anti-corrosion coating and prolonging the prevention service life can be achieved. Especially when the coating is damaged, the coating has self-restoration function, and the prevention service life of the coating can be prolonged.

Description

technical field [0001] The invention relates to an intelligent nano-container for preventing corrosion of copper and copper alloys, and a preparation and application method thereof. The intelligent nano-container is suitable for preventing corrosion of copper and copper alloys, and belongs to the technical field of corrosion protection. Background technique [0002] Copper and copper alloys are widely used in electrical, electronic, mechanical, transportation and other industrial fields due to their high electrical conductivity, high thermal conductivity, low thermal expansion coefficient and good corrosion resistance. Although copper and copper alloys are relatively inert metals, they are easily corroded in harsh environments, such as seawater, pickling solutions, or coastal atmospheric environments. [0003] Corrosion inhibitors are an effective way to prevent corrosion of copper and copper alloys, and have been widely used. For example, benzotriazole and its derivatives h...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D167/08C09D5/08C01B33/18B82Y30/00
CPCB82Y30/00C01B33/18C08K3/36C08K5/3475C08K7/26C08K9/06C08K9/12C09D5/08C09D163/00C09D167/08
Inventor 林志峰马鑫许立坤李相波
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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