Aluminum molybdate rustproofing pigment and preparation method thereof

An anti-rust pigment, aluminum molybdate technology, applied in anti-corrosion coatings, anti-fouling/underwater coatings, biocide-containing paints, etc., can solve carcinogenicity, cannot meet high-end requirements, and cannot meet the needs of human environment and its health Requirements and other issues to achieve good anti-corrosion performance

Inactive Publication Date: 2012-08-01
常州安琪尔化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many measures to prevent metal corrosion, the most extensive and effective method is still the protection method of paint and paint; Anti-rust pigments are gradually eliminated due to their strong toxicity and even carcinogenicity, which can no longer meet the requirements of human beings on the environment and their health; at present, in the market, low / non-toxic anti-rust pigments at home and abroad mainly include phosphoric acid Zinc, zinc powder, aluminum tripolyphosphate, zinc phosphomolybdate series, etc., but the above-mentioned products still have various deficiencies in some indicators such as anti-corrosion, anti-rust performance, and environmental protection performance, and cannot meet high-end requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: 30 kilograms of sodium molybdate, 10 kilograms of aluminum nitrate, 7 kilograms of hydrated phosphomolybdic acid and water are diluted in a ratio of 1:3 for use;

[0018] Put 156 kg of water and 52 kg of zinc oxide into the reactor at a ratio of 3:1, stir and heat up. When the temperature rises to 43 degrees, add dropwise phosphomolybdic acid aqueous solution for 1.2 hours and keep warm for 2 hours;

[0019] Naturally cool to normal temperature, take a sample and detect the pH value of the water suspension according to the GM1717-86 method. Usually, the aqueous solution of the suspension is acidic, and the aqueous solution is adjusted to a pH value of 8.7 with 1 kilogram of pH regulator; the prepared Put 30 kg of sodium molybdate aqueous solution into the reaction kettle, and start to slowly and evenly drop 10 kg of aluminum nitrate aqueous solution prepared for use. Since aluminum nitrate is a strong oxidant, the reaction is very violent and exothermic, w...

Embodiment 2

[0022] Embodiment 2: 32 kilograms of sodium molybdate, 12 kilograms of aluminum nitrate, 5.8 kilograms of hydrated phosphomolybdic acid and water are diluted in a ratio of 1:3 for use;

[0023] Put 147 kg of water and 49 kg of zinc oxide into the reactor at a ratio of 3:1, stir and heat up. When the temperature rises to 42 degrees, add dropwise phosphomolybdic acid aqueous solution for 1.2 hours and keep warm for 2 hours;

[0024] Cool to normal temperature, take a sample and detect the pH value of the water suspension according to the GM1717-86 method. Usually, the aqueous solution of the suspension is acidic, and the aqueous solution is adjusted to a pH value of 8.5 with 1.2 kg of pH regulator; the prepared 32 Put 1 kilogram of sodium molybdate aqueous solution into the reaction kettle, start to slowly and evenly drop 12 kilograms of aluminum nitrate aqueous solution prepared for use, and the dripping time is controlled at 5h in this example; after the reactant is completely...

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PUM

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Abstract

The invention belongs to the field of chemical industry, is mainly applied to coating industry, is especially suitable for protection for steel and particularly relates to an aluminum molybdate rustproofing pigment and a preparation method thereof. The aluminum molybdate rustproofing pigment is prepared from the following raw materials in weight percentage: 20-35 percent of sodium molybdate, 10-15 percent of aluminum nitrate, 5-7 percent of hydrated phosphomolybdic acid, 45-60 percent of zinc oxide and 0.5-1.5 percent of PH regulator. The aluminum molybdate rustproofing pigment and the preparation method thereof have the characteristics of no toxin, high efficiency and environmental protection. Moreover, the aluminum molybdate rustproofing pigment has the characteristics of good antiseptic property and long-acting rustproofing performance.

Description

technical field [0001] The invention belongs to the field of chemical industry, is mainly used in the coating industry, and is especially suitable for the protection of steel; in particular, it relates to an aluminum molybdate antirust pigment and a preparation method thereof. Background technique [0002] At present, due to the pollution of the environment and the rapid development of industry, the losses caused by metal corrosion are also becoming more and more serious. Although there are many measures to prevent metal corrosion, the most extensive and effective method is still the protection method of paint and paint; Anti-rust pigments are gradually eliminated due to their strong toxicity and even carcinogenicity, which can no longer meet the requirements of human beings on the environment and their health; at present, in the market, low / non-toxic anti-rust pigments at home and abroad mainly include phosphoric acid Zinc, zinc powder, aluminum tripolyphosphate, zinc phos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D5/08C09D5/16
Inventor 吴亚红
Owner 常州安琪尔化工有限公司
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