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Environment-friendly composite volatile corrosion inhibitor for galvanized steel sheet and preparation method thereof

A vapor-phase corrosion inhibitor, technology of galvanized steel sheet, applied in flexible covering, packaging, wrapping paper, etc., can solve the problems of limited corrosion inhibition effect of galvanized steel sheet, environmental and human harm, large dosage, etc., to achieve corrosion inhibition Good effect, cost-effective, low toxicity effect

Inactive Publication Date: 2015-07-08
武汉江南铁依环保产业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing galvanized corrosion inhibitors have limited corrosion inhibitory effects on galvanized steel sheets treated with different passivating agents, and can only act on a single passivating agent, and the dosage is relatively large, which is harmful to the environment and human body. bigger

Method used

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  • Environment-friendly composite volatile corrosion inhibitor for galvanized steel sheet and preparation method thereof
  • Environment-friendly composite volatile corrosion inhibitor for galvanized steel sheet and preparation method thereof
  • Environment-friendly composite volatile corrosion inhibitor for galvanized steel sheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation method of the compound vapor phase corrosion inhibitor for environment-friendly galvanized steel sheets is as follows: weigh 17.5 parts of sodium benzoate, 33.65 parts of water-soluble benzotriazole, 26.85 parts of sodium tungstate, 15.5 parts of cinnamic acid, 6.5 parts of triethanolamine, Deionized water was used to prepare solutions respectively, and the mass concentrations of the active component solutions were 25.93%, 25.18%, 34.94%, 23.66%, and 11.5%, respectively. After standing to clarify, the solutions were mixed. It is obtained by adjusting the pH value of the mixed solution to 8.3-8.8 with saturated ammonia water.

[0032] Quantitative 80g / m 2 The plain weave single-folding base paper is dipped in the environment-friendly galvanized steel sheet prepared in this example for 10 seconds, and then placed in a constant temperature oven with a set temperature of 55°C for 15 minutes and then taken out to obtain an environment-friendly coating. Anti...

Embodiment 2

[0037] The preparation method of the compound vapor phase corrosion inhibitor for environment-friendly galvanized steel sheets is as follows: weigh 20.13 parts of sodium benzoate, 30.77 parts of water-soluble benzotriazole, 24.05 parts of sodium tungstate, 18.1 parts of cinnamic acid, 6.95 parts of triethanolamine, Prepare solutions with deionized water respectively, and the mass concentration of each active component solution is 26.5%, 24.35%, 27.0%, 22.85%, and 15.55%, respectively. After standing for clarification, the solutions are mixed. Adjust the pH value of the mixture to 8.3-8.8 with saturated sodium carbonate solution.

[0038] Quantitative 80g / m 2The plain weave single-folding base paper was dipped in the environment-friendly galvanized steel composite gas-phase corrosion inhibitor prepared in this example for 20 seconds, and then placed in a constant temperature oven with a set temperature of 100°C for 25 minutes and then taken out to obtain an environment-friendly...

Embodiment 3

[0043] The preparation method of the compound vapor phase corrosion inhibitor for environment-friendly galvanized steel sheets is as follows: weigh 25.15 parts of sodium benzoate, 23.75 parts of water-soluble benzotriazole, 18.84 parts of sodium tungstate, 24.21 parts of cinnamic acid, 8.05 parts of triethanolamine, Prepare solutions with deionized water respectively, and the mass concentration of each active component solution is 27.5%, 24.75%, 30.45%, 23.05%, and 20.43%, respectively. After standing for clarification, the solutions are mixed. It is obtained by adjusting the pH value of the mixture to 8.3-8.8 with saturated sodium bicarbonate solution.

[0044] Quantitative 100g / m 2 The plain-weave single-coated base paper is dipped in the environment-friendly galvanized steel composite gas-phase corrosion inhibitor prepared in this example for 15 seconds, and then placed in a constant temperature oven with a set temperature of 80°C for 20 minutes and then taken out to obtain...

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Abstract

The invention relates to an environment-friendly composite volatile corrosion inhibitor for a galvanized steel sheet and a preparation method thereof. The composite volatile corrosion inhibitor comprises the following active components by mass: 17.5 to 30.15% of sodium benzoate, 15.75 to 33.65% of water-soluble benzotriazol, 15.84 to 26.85% of sodium tungstate, 15.5 to 29.26% of cinnamic acid and 6.5 to 9% of triethanolamine. The preparation method comprises the following steps: 1) weighing the active components; and 2) separately preparing a solution of each active component through addition of water, mixing the solutions of all the active components after standing and clarification so as to obtain a mixed solution, and adjusting the pH value of the mixed solution to 8.3 to 8.8 by using buffering alkali lye. According to the invention, the environment-friendly composite volatile corrosion inhibitor is prepared by using the simple method and exerts a good antirust effect when applied on the surface of antirust raw paper.

Description

technical field [0001] The invention relates to the technical field of gas-phase antirust for galvanized steel sheets, in particular to an environment-friendly composite gas-phase corrosion inhibitor for galvanized steel sheets and a preparation method thereof. Background technique [0002] Vapor-phase anti-rust packaging technology is a technology that uses a gas-phase anti-rust agent (volatile corrosion inhibitor, VCI) to prevent rust on metal products in a sealed packaging container. Vapor-phase antirust agent has a high saturated vapor pressure, can slowly volatilize at room temperature, and the volatilized gas can protect the metal surface. Therefore, the anti-rust effect can be achieved without direct contact with the protected object during use. The gas volatilized by the vapor phase rust inhibitor protects the metal surface. Therefore, the anti-rust effect can be achieved without direct contact with the protected object during use. The gas volatilized by the gas-p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/02B65D65/42
Inventor 付艳梅王菊珍潘启顺刘雄文
Owner 武汉江南铁依环保产业发展有限公司
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