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Preparation method of low-cost corrosion inhibitor loading structure

A technology of loading structure and corrosion inhibitor, which is applied in the field of preparation of low-cost corrosion inhibitor loading structure, can solve the problems of complex preparation process, low production efficiency, and high cost, and achieve the goal of avoiding the preparation process, reducing raw material costs, and low price Effect

Inactive Publication Date: 2016-08-24
ZIGONG INNOVATION CENT OF ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, porous silica microspheres or porous titanium dioxide are usually used as porous supporting structures. The preparation process of these materials is relatively complicated, requiring multiple filtration and drying, high process requirements, and low production efficiency. Therefore, the cost is high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Under the stirring condition of 200r / min, in 100 parts by mass of water, add 0.1 mol / liter of hydrochloric acid to adjust the pH value of the solution between 3; then heat the solution to 50°C, add 10 parts by mass of cerium nitrate and mix well, Then add 1 mass part of absolute ethanol and stir for 0.5 hours;

[0023] (2) Add 10 parts by mass of analytically pure diatomaceous earth to the solution in step (1) under 500r / min stirring condition, and mix and stir for 3 hours;

[0024] (3) Centrifuge the mixture obtained in step (2), wash it with ethanol for 4 times, dry it in an oven at 80°C, take it out and grind it through a 200-mesh sieve to obtain a diatomite-loaded corrosion inhibitor structure.

[0025] How to use low-cost corrosion inhibitor-loaded structures:

[0026] Add 10 parts by mass of the diatomite-loaded corrosion inhibitor structure to 100 parts by mass of the water-based paint, and mix and stir for 3 hours.

Embodiment 2

[0028] (1) Under the stirring condition of 200r / min, in 100 parts by mass of water, add 0.1 mol / liter of hydrochloric acid to adjust the pH value of the solution between 4; then heat the solution to 50°C, add 12 parts by mass of cerium nitrate and mix evenly, Then add 1 mass part of absolute ethanol and stir for 0.5 hours;

[0029] (2) Add 10 parts by mass of analytically pure diatomaceous earth to the solution in step (1) under 500r / min stirring condition, and mix and stir for 3 hours;

[0030] (3) Centrifuge the mixture obtained in step (2), wash it with ethanol for 4 times, dry it in an oven at 80°C, take it out and grind it through a 200-mesh sieve to obtain a diatomite-loaded corrosion inhibitor structure.

[0031] How to use low-cost corrosion inhibitor-loaded structures:

[0032] Add 10 parts by mass of the diatomite-loaded corrosion inhibitor structure to 100 parts by mass of the water-based paint, and mix and stir for 3 hours.

Embodiment 3

[0034] (1) Under the stirring condition of 200r / min, in 100 parts by mass of water, add 0.1 mol / liter of hydrochloric acid to adjust the pH value of the solution between 5; then heat the solution to 50°C, add 15 parts by mass of cerium nitrate and mix evenly, Then add 1 mass part of absolute ethanol and stir for 0.5 hours;

[0035] (2) Add 10 parts by mass of analytically pure diatomaceous earth to the solution in step (1) under 500r / min stirring condition, and mix and stir for 3 hours;

[0036] (3) Centrifuge the mixture obtained in step (2), wash it with ethanol for 4 times, dry it in an oven at 80°C, take it out and grind it through a 200-mesh sieve to obtain a diatomite-loaded corrosion inhibitor structure.

[0037] How to use low-cost corrosion inhibitor-loaded structures:

[0038] Add 10 parts by mass of the diatomite-loaded corrosion inhibitor structure to 100 parts by mass of the water-based paint, and mix and stir for 3 hours.

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Abstract

The invention relates to an anti-corrosive additive technique, and aims at providing a preparation method of a low-cost corrosion inhibitor loading structure. The preparation method comprises the following steps of in the stirring process, adding cerous nitrate into the heated acid water to uniformly mix, and adding absolute ethyl alcohol to stir; adding diatomite to stir; centrifuging and separating the obtained mixture, washing by ethyl alcohol, drying at the temperature of 80 DEG C, fetching out, and grinding by a 200-mesh sieve, so as to obtain the low-cost corrosion inhibitor loading structure. The preparation method has the advantages that by using the natural mineral of diatomite as a porous loading structure, the direct contact between the corrosion inhibitor and coating is avoided, and the content of corrosion inhibitor can be increased to about 3%; by using the diatomite as a loading substrate, the diatomite is a natural mineral and has better hole structure distribution, so that the diatomite is suitable for directly being used as the loading structure, and the complicated preparation process of the porous loading structure is avoided; the price of the diatomite is low, so that the raw material cost of the loading structure is greatly reduced, and the preparation method is suitable for being greatly applied and popularized in industries.

Description

technical field [0001] The invention relates to the preparation technology of anticorrosion additives, in particular to a preparation method for a low-cost corrosion inhibitor loading structure. Background technique [0002] Anti-corrosion coatings for ships, especially anti-corrosion coatings for hulls, have high requirements on the corrosion resistance of coatings. Ordinary organic resin and other anti-corrosion coatings are combined with pretreatment layers and primers, and zinc powder and other anodic protective agents are added at the same time. It has better corrosion resistance performance. However, the organic water-based anti-corrosion coating has strong water absorption and will cause swelling, which will reduce its shielding effect on corrosive media after a certain period of use. Therefore, it needs to be repaired and recoated after a period of use to ensure the normal operation of the ship. Therefore, a corrosion inhibitor is needed to help improve the corrosio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08
CPCC09D5/08
Inventor 吴春春樊先平张玲洁沈涛沈志成
Owner ZIGONG INNOVATION CENT OF ZHEJIANG UNIV
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