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Nanometer oxide coated phosphate rust resisting pigment and preparation method thereof

A nano-oxide and nano-scale oxide technology, which is used in chemical instruments and methods, anti-corrosion coatings, inorganic pigment treatment, etc., can solve the high cost of phosphate anti-rust pigments, the widespread use of non-toxic anti-rust pigments and the limitations of promotion, etc. problem, to achieve the effect of low cost

Inactive Publication Date: 2012-11-14
HEBEI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the main problem at present is that the cost of these phosphate antirust pigments is quite high (for example, the current market price of zinc phosphate is 15,000 yuan / ton, and the price of polyaluminum phosphate is 13,000 yuan / ton), making these non-toxic antirust pigments Widespread use and promotion are limited

Method used

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  • Nanometer oxide coated phosphate rust resisting pigment and preparation method thereof
  • Nanometer oxide coated phosphate rust resisting pigment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The preparation method of antirust pigment of the present invention:

[0038] 1: Weigh 22.3g of calcium hydroxide [Ca(OH) 2 ], slowly add 200ml of water, stir well until the emulsification is uniform.

[0039] 2: Measure 14ml of concentrated phosphoric acid with a concentration of 85%, slowly add 28ml of water, and stir evenly.

[0040] 3: Slowly add the diluted phosphoric acid to the calcium hydroxide emulsion while stirring. After the dropwise addition, the stirring reaction was continued at normal temperature for 2 hours to stop, and the calcium phosphate intermediate emulsion was obtained.

[0041] 4: Titanium oxysulfate (TiOSO 4 ) 3.2g into 100ml of water, dissolved for later use.

[0042] 5: Weigh 2.86g of calcium hydroxide, add 50ml of water and stir to form an emulsion for later use.

[0043] 6: Add the titanyl sulfate solution prepared in step 4 to the calcium phosphate intermediate emulsion prepared in step 3, mix evenly and drop into the calcium hydroxid...

Embodiment 2

[0046] The preparation method of antirust pigment of the present invention:

[0047] 1: Weigh 30g of calcium carbonate [CaCO 3 ], slowly add 200ml of water, stir well until the emulsification is uniform.

[0048] 2: Measure 14ml of concentrated phosphoric acid with a concentration of 85%, slowly add 28ml of water, and stir evenly.

[0049] 3: Slowly add the diluted phosphoric acid to the calcium hydroxide emulsion while stirring. After the dropwise addition, the stirring reaction was continued at normal temperature for 2 hours to stop, and the calcium phosphate intermediate emulsion was obtained.

[0050] 4: Titanium oxysulfate (TiOSO 4 ) 3.2g into 100ml of water, dissolved for later use.

[0051] 5: Weigh 2.86g of calcium hydroxide, add 50ml of water and stir to form an emulsion for later use.

[0052] 6: Add the titanyl sulfate solution prepared in step 4 to the calcium phosphate intermediate emulsion prepared in step 3, mix evenly and then drop into the calcium hydroxi...

Embodiment 3

[0055] The preparation method of antirust pigment of the present invention:

[0056] 1: Weigh 16.8g of calcium oxide [CaO], slowly add 200ml of water, stir well until the emulsification is uniform.

[0057] 2: Measure 14ml of concentrated phosphoric acid with a concentration of 85%, slowly add 28ml of water, and stir evenly.

[0058] 3: Slowly add the diluted phosphoric acid to the calcium hydroxide emulsion while stirring. After the dropwise addition, the stirring reaction was continued at normal temperature for 2 hours to stop, and the calcium phosphate intermediate emulsion was obtained.

[0059] 4: Titanium oxysulfate (TiOSO 4 ) 3.2g into 100ml of water, dissolved for later use.

[0060] 5: Weigh 2.86g of calcium hydroxide, add 50ml of water and stir to form an emulsion for later use.

[0061] 6: Add the titanyl sulfate solution prepared in step 4 to the calcium phosphate intermediate emulsion prepared in step 3, mix evenly and then drop into the calcium hydroxide emul...

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Abstract

The invention discloses a nanometer oxide coated phosphate rust resisting pigment which is a composite rust resisting pigment formed by coating a nanometer-scale oxide on micron-scale phosphate, wherein the weight ratio of the nanometer-scale oxide to the micron-scale phosphate is (1-10):100. The preparation of the nanometer oxide coated phosphate rust resisting pigment comprises the following steps of: A, preparing calcium phosphate through carrying out liquid phase reaction on a calcium-containing compound and phosphoric acid; B, adding a titanyl sulfate or zinc sulfate solution into a calcium phosphate solution, mixing evenly, then stirring and slowly dripping calcium hydroxide emulsion into the mixture to generate nanometer titanium dioxide or nanometer zinc oxide which is coated on the surface of the calcium phosphate; and C, filtering the reaction solution and drying and roasting a filter cake to obtain the nanometer oxide coated phosphate rust resisting pigment. The rust resisting pigment provided by the invention has the advantages of excellent metal rust resisting property and very low cost.

Description

technical field [0001] The invention relates to the technical field of metal antirust, in particular to an antirust pigment. Background technique [0002] The annual economic loss caused by metal corrosion in the world is as high as 700 billion U.S. dollars, which is higher than the sum of natural disaster losses such as earthquakes, fires, and typhoons. In our country, the loss caused by metal corrosion is also huge, accounting for about 4% of the gross national product. In order to prevent corrosion of metals, a variety of protective measures such as biological measures, metallurgy, electrochemical measures and paint protection measures can be used. Among them, coating the metal surface with an anti-corrosion coating is one of the most effective and commonly used methods to prevent metal corrosion. This is because the use of coating protection has strong applicability and is relatively economical. In addition, it can combine protection with decoration and other effects. ...

Claims

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Application Information

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IPC IPC(8): C09D5/08C09C1/02C09C3/06
Inventor 丁宇丁士文
Owner HEBEI UNIVERSITY
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