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A gas-phase rust inhibitor and a slow-release gas-phase rust inhibitor containing the same

A rust inhibitor and gas-phase technology, applied in the field of gas-phase rust inhibitors and slow-release gas-phase rust inhibitors containing them, can solve the problem of excessive volatilization of active components of rust inhibitors, time-consuming and labor-intensive replacement of rust inhibitors, and obstacles to smart grids Development and other issues, to achieve the effect of reducing the frequency of dressing changes, prolonging life, and saving labor costs

Active Publication Date: 2021-01-26
中电保力(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the internal corrosion problems of power equipment emerge in endlessly, especially in the electrical cabinets with intelligent power equipment, the corrosion problem once became one of the bottlenecks hindering the development of smart grids
However, there is no control or slow-release measures for the rust inhibitor in the above patents. The active ingredients of the rust inhibitor volatilize too fast, and the volatilization process is uncontrollable, so that the rust inhibitor will be volatilized in a short period of time, and it is necessary to continuously replenish expensive rust inhibitors. agent, which is not conducive to cost saving, and it is time-consuming and laborious to replace the rust inhibitor

Method used

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  • A gas-phase rust inhibitor and a slow-release gas-phase rust inhibitor containing the same
  • A gas-phase rust inhibitor and a slow-release gas-phase rust inhibitor containing the same

Examples

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preparation example Construction

[0040] The preparation method of the gas-phase rust-inhibiting diaphragm comprises the following steps:

[0041](1) Dissolve 20-40 parts by weight of polyvinylidene fluoride in 50-150 parts by weight of dimethylformamide, stir for 5-12 hours and heat in a water bath at 30-40°C, then keep the temperature in the water bath for 1.5-5 hours to form a stable mixed solution , and add 3-7 parts by weight of the additive, the additive contains polyvinylpyrrolidone and 2-mercaptoethanol, the mass percentage of 2-mercaptoethanol in the additive is 2-15wt%, let stand for 2-6h, realize complete defoaming Obtain the film liquid precursor; Preferred additives are polyethylene glycol, ethanol, polyvinylpyrrolidone, poly(meth)acrylate and 2-mercaptoethanol, and the weight ratio is 33-48:8-15:15-25 :5-40: 4-7.

[0042] (2) Pouring the film liquid precursor obtained in step (1) on the non-woven fabric, and using a scraper to scrape the liquid film to form a film with a thickness of 100-450 μm....

preparation example 1

[0048] formula:

[0049] Vapor-phase rust inhibitor consists of 60 parts of rust inhibitor, 15 parts of polyvinyl alcohol and 20 parts of solvent;

[0050] Antirust ingredients include glutamic acid, triethanolamine, tert-butyl glycine and sodium benzoate, with a weight ratio of 40:25:5:15;

[0051] The solvent is a mixed solvent of ethanol and water, and the weight ratio is 15:85.

[0052] Preparation:

[0053] (1) Take amino acid alkyl ester and add in ethanol and stir and mix evenly;

[0054] (2) Add polyvinyl alcohol, glutamic acid and sodium benzoate into water in proportion, stir and mix evenly;

[0055] (3) Mix the mixture obtained in step (1) and step (2) until uniform;

[0056] (4) Weigh triethanolamine and add it to the mixture obtained in step (3) for mixing to finally obtain the desired vapor phase rust inhibitor.

preparation example 2

[0058] Others are the same as Preparation Example 1, except that the antirust ingredients glutamic acid, triethanolamine, tert-butyl glycine and sodium benzoate in the formula are in a weight ratio of 45:20:8:20.

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Abstract

The invention discloses a gas-phase rust inhibitor and a slow-release gas-phase rust inhibitor containing the same. The vapor phase rust inhibitor includes a weight ratio of (60-70):(10-20):(10-20) antirust components, polyvinyl alcohol and a solvent, and the rust inhibitors include the first aliphatic amino acid 40-50 20-25 parts of organic amine, 5-10 parts of the second amino acid alkyl ester and 5-20 parts of benzoate. The gas-phase rust-inhibiting diaphragm with the slow-release function of the membrane box is used in conjunction with the gas-phase rust-inhibiting agent provided by the present invention, so that the volatile gas-phase rust-inhibiting components can volatilize slowly and uniformly, and can inhibit corrosion for a long time. On the basis of ensuring rust resistance, the diaphragm further Extend the life of the bellows and reduce the frequency of dressing changes. The bellows has a simple shape and can be recycled.

Description

technical field [0001] The invention belongs to the field of metal anti-rust materials, and in particular relates to a gas-phase anti-rust agent and a slow-release gas-phase anti-rust film box containing the same. Background technique [0002] With the implementation of the smart grid plan of the State Grid Corporation of China, the substation will develop into a smart substation. The primary equipment will be upgraded to intelligent power equipment, and the secondary equipment will become an intelligent control unit. It is a revolutionary to realize the integration of primary and secondary equipment enterprises. Variety. However, internal corrosion problems of power equipment emerge in endlessly, especially in electrical cabinets with smart power equipment. The corrosion problem once became one of the bottlenecks hindering the development of smart grids. Under the tremendous changes, preventing and controlling the corrosion of metal parts inside distribution network equipm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F11/02
CPCC23F11/02
Inventor 王少华王宇川
Owner 中电保力(北京)科技有限公司
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