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Cerium citrate nontoxic rust-preventive pigment and coating thereof

A technology of cerium citrate and anti-rust pigments, applied in coatings, anti-corrosion coatings, azo dyes, etc., can solve the problems of deep color, increase the difficulty of dispersion, and affect the rapid promotion and use, and achieve good anti-corrosion effect

Inactive Publication Date: 2009-07-15
丁忠 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Ferroferric oxide is the carrier powder. After the nano-powder material is evenly attached to the carrier powder, a composite iron-titanium powder is formed. The color is dark and it is not easy to make light-colored paints; It is easy to delaminate, so a certain amount of anti-sedimentation agent needs to be added; due to the magnetic agglomeration phenomenon caused by the magnetism of ferroferric oxide, it increases the difficulty of dispersion, and a certain amount of dispersant must be added
The deficiencies in these three aspects have affected its rapid promotion and use to a certain extent.

Method used

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  • Cerium citrate nontoxic rust-preventive pigment and coating thereof

Examples

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Effect test

example 1

[0039] Dissolve 0.1mol cerium nitrate in 100ml distilled water to prepare solution A; dissolve 0.1mol sodium citrate in 100ml distilled water to prepare solution B, drop solution A into solution B, mix and stir for 1 hour, adjust with 2mol / L nitric acid The pH value is 3.5, after 6 hours of aging, filtration, washing, vacuum drying at 60°C, crushing and packaging to obtain cerium citrate. According to the vario EL III type elemental analyzer (Germany), the percentage content of carbon element is 19.1%, the percentage content of hydrogen element is 2.8315%, and the purity of cerium citrate is calculated to be 99.4%. The oil absorption (OA) of cerium citrate measured according to the method of GB5211.15-88 is 68ml / g, the specific gravity (d) of the pigment measured according to GB1713-79 is 2.1, pH=6.

example 2

[0041] Dissolve 0.1mol cerium chloride in 100ml distilled water to prepare solution A; dissolve 0.12mol potassium citrate in 100ml distilled water to prepare solution B, drop solution A into solution B, mix and stir for 2 hours, and dilute with 2mol / L Adjust the pH value to 4 with hydrochloric acid, age for 7 hours, filter, wash, vacuum dry at 80°C, crush and pack to obtain cerium citrate. Through vario EL III type elemental analyzer (Germany), the percentage content of carbon element is 19.2%, the percentage content of hydrogen element is 2.766%, and the purity of cerium citrate is calculated to be 99.3%. According to the method of GB5211.15-88, the oil absorption (OA) of cerium citrate is 70ml / g, and the specific gravity (d) of the pigment is 2.2 according to GB1713-79, pH=7.

example 3

[0043] Dissolve 0.05mol cerium sulfate in 100ml distilled water to prepare solution A; dissolve 0.13mol ammonium citrate in 100ml distilled water to prepare solution B, drop solution A into solution B, mix and stir for 1.5 hours, and use 1mol / L dilute sulfuric acid Adjust the pH value to 4.5, age for 8 hours, filter, wash, vacuum dry at 70°C, crush and pack to obtain cerium citrate. According to the vario EL III elemental analyzer (Germany), the percentage content of carbon element is 19.0%, the percentage content of hydrogen element is 2.897%, and the purity of cerium citrate is calculated to be 99.2%. The oil absorption (OA) of cerium citrate measured according to the method of GB5211.15-88 is 65ml / g, the specific gravity (d) of the pigment measured according to GB1713-79 is 2, and pH=6.5.

[0044] 2 Preparation of anti-corrosion coating

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Abstract

The invention relates to a nontoxic rust-proof paint and a coating. The nontoxic rust-proof paint is cerous citrate, and has the molecular formula CeC6H5O7.nH2O, wherein n is 1 to 4, the cerous citrate is white, the specific gravity of the cerous citrate is 2.0 to 2.2, the oil absorption amount is 65 to 70 milliliters per g, and the pH is 6 to 7. An anti-corrosive paint comprises the following components by weight portion: 20 to 30 portions of 50 percent epoxy ester, 5 to 20 portions of cerous citrate, 5 to 15 portions of aluminum triphosphate, 5 to 10 portions of zinc molybdate, 5 portions of red iron oxide, 20 to 40 portions of dimethyl benzene, 2 portions of dispersant DA-01, 0.1 portion of antifoaming agent BYK-022, 0.15 portion of cobalt drier, and 6 portions of rare-earth drier. According to the measurement of GB / T1763-79, the salt water resistance (d) of the paint is 45 days; and according to the neutral salt mist (h) experiment of GB / T1771-91, the paint is in good condition after 1,030 hours.

Description

Technical field: [0001] The invention relates to the field of metal protection, in particular to the preparation of a non-toxic anti-rust cerium citrate and the preparation of a paint. Background technique: [0002] Metals and their alloys are used in all fields of the national economy. According to statistics, the annual metal loss caused by corrosion in the world is as high as 20% to 40% of the annual metal output, which is about 6 times the sum of natural disasters such as earthquakes, floods, and typhoons, causing huge economic losses. At the same time, the corrosion damage of metal equipment and facilities will also affect the stability of production and disturb people's living order, and even lead to safety accidents and personal injuries. Therefore, metal corrosion protection is very important. Today, as environmental protection is increasingly valued, the development of new environmentally friendly and pollution-free antirust coatings has become one of the developm...

Claims

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Application Information

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IPC IPC(8): C09B57/00C07C59/265C07C51/41C09D5/08C09D163/00C09D7/00B05D7/14
Inventor 丁忠童晓晨郑天亮姜强王永辉童晓宁
Owner 丁忠
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