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Aluminium zinc phosphomolybdate compounded rustproof pigment and production method thereof

A technology of anti-rust pigments and aluminum phosphomolybdate, which is applied in the direction of phosphorus compounds, pigment pastes, anti-corrosion coatings, etc., can solve the problem of anti-rust pigments such as aluminum-zinc phosphomolybdate, iron red, zinc phosphate and modified phosphoric acid. Zinc, aluminum tripolyphosphate, zinc phosphomolybdate series, ion exchange pigments, magnesium ferrite and phosphite, etc.

Active Publication Date: 2012-02-01
GUANGXI XINJING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the low / non-toxic anti-rust pigments on the market at home and abroad mainly include mica iron oxide, iron oxide red, zinc phosphate and modified zinc phosphate, aluminum tripolyphosphate, zinc phosphomolybdate series, ion exchange pigments, ferric acid Magnesium and phosphite, etc., but there is no report about aluminum zinc phosphomolybdate as antirust pigment

Method used

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  • Aluminium zinc phosphomolybdate compounded rustproof pigment and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add water to the stirring paddle in the reaction kettle, heat it to 55°C, and then add 120 kg of aluminum zinc phosphate, 20 kg of aluminum phosphate and 2 kg of zinc aluminate under stirring. After 30 minutes, add 15 kilograms of barium sulfate and 15 kilograms of zinc oxide, and continue to react for 30 minutes. After the temperature drops to 40 ° C, add 0.2 kilograms of diethanolamine, start high-speed stirring, and control 200 rpm. Centrifugal dehydration, drying, crushing, weighing, and packaging into products.

Embodiment 2

[0029] Add water to the stirring paddle in the reaction kettle, heat to 80°C, and then add 140 kg of aluminum zinc phosphate, 35 kg of aluminum phosphate and 8 kg of zinc molybdate under stirring. After 30 minutes, add 3 kilograms of barium sulfate and 10 kilograms of zinc oxide, and continue to react for 30 minutes. After the temperature drops to 35 ° C, add 1 kilogram of triethanolamine, start high-speed stirring, and control 250 rpm. Centrifugal dehydration, drying, crushing, weighing, and packaging into products.

Embodiment 3

[0031] Add water to the reactor to the stirring paddle, heat to 95°C, and then add 100 kg of aluminum zinc phosphate, 40 kg of aluminum phosphate and 1 kg of zinc aluminate under stirring. After 30 minutes, add 2 kilograms of barium sulfate and 6 kilograms of zinc oxide, and continue to react for 30 minutes. After the temperature drops to 50 ° C, add 0.5 kilograms of monoethanolamine, start high-speed stirring, and control 350 rpm. Centrifugal dehydration, drying, crushing, weighing, and packaging into products.

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Abstract

The invention provides an aluminium zinc phosphomolybdate compounded rustproof pigment which takes aluminium zinc phosphate, zinc molybdate, aluminium phosphate and the like as main raw materials to synthesise aluminium zinc phosphomolybdate compounded rustproof pigment. The rustproof pigment is prepared from the following raw materials in parts by weight: 50-75 parts of aluminium zinc phosphomolybdate, 10-20 parts of aluminium phosphate, 3-10 parts of zinc oxide, 1-8 parts of barium sulphate, 0.5-5 parts of zinc molybdate and 0.1-0.5 part of accessory ingredient. The preparation method comprises the following steps: (1) after a certain quantity of water is added into an agitated reactor, successively adding the aluminium zinc phosphate, aluminium phosphate and zinc molybdate into an agitated reactor under the condition of stirring, stirring at the temperature of 50-100 DEG C; (2) fully stirring the materials with barium sulfate and zinc oxide, and carrying out modified treatment; (3)cooling the materials to be below 50 DEG C, and adding the accessory ingredient to carry out surface treatment; and (4) carrying out centrifugal dehydration, drying, smashing, weighting and packaginginto products. The invention has the characteristics of no toxin, environment protection and high efficiency of the rustproof pigment and can completely replace the traditional toxic heavy metal rustproof pigment, such as red lead, zinc chrome and the like in the industrial pigment.

Description

Technical field: [0001] The invention relates to an antirust pigment and a production method thereof, in particular to an aluminum-zinc phosphomolybdic acid composite antirust pigment and a production method thereof. The antirust pigment can completely replace traditional toxic heavy metal antirust pigments such as red lead and zinc chrome yellow Use in industrial coatings. Background technique: [0002] The loss caused by metal corrosion is becoming more and more serious with the development of industry. Although there are many anti-corrosion measures at present, the most widely used method is still the coating protection method. In this method, the antirust pigment is an important factor affecting the protection effect. For a long time, anti-rust pigments have always been dominated by compounds containing lead and chromium. Although their anti-rust effect is good, due to the increasing attention of human beings to the environment and health, such toxic anti-rust pigments...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/45C09C3/08C09C1/40C09C3/06C09D17/00C09D5/08
Inventor 俞于怀李开成胡容平吴良
Owner GUANGXI XINJING TECH
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