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Nickel-magnesium-containing chromium-free zinc aluminum coating corrosion-resistant coating

A coating anti-corrosion, zinc-aluminum technology, applied in anti-corrosion coatings, coatings, etc., can solve the problems of reduced corrosion resistance, high price, and increased cost of coatings, and achieve excellent corrosion resistance, low price, and good adhesion Effect

Active Publication Date: 2013-04-24
TONGXIANG TONGDE ELECTRIC POWER FITTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are industrial applications of chromium-free Dacromet technology at home and abroad, but the corrosion resistance of the coating is significantly lower than that of traditional Dacromet coatings, and it needs to be used with another organic coating, which greatly increases the cost
The cost of chromium-free zinc-aluminum coating is much higher than that of zinc-chromium coating, so its price is high

Method used

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  • Nickel-magnesium-containing chromium-free zinc aluminum coating corrosion-resistant coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A nickel-magnesium-containing chromium-free zinc-aluminum coating anti-corrosion coating, which is composed of two components A and B in a mass ratio of 3:1, wherein the formula mass percentage of component A is:

[0053] Zinc aluminum alloy powder 32%

[0054] Nano Silica 25%

[0055]Sodium lignosulfonate 15%

[0056] Benzotriazole 4%

[0057] Thiodiethylene glycol 0.35%

[0058] Triphenylphosphine 0.35%

[0059] Deionized water balance

[0060] The formula mass percentage of component B is:

[0061] Zirconium tetrafluoride 25%

[0062] Gamma-Aminopropyltriethoxysilane 18%

[0063] Phytate 14%

[0064] Cellulose Acetate 3.5%

[0065] Ethanol 7%

[0066] Deionized water balance

[0067] Wherein, the zinc-aluminum alloy powder is composed of Zn, Al, Ni and Mg.

[0068] Wherein, the particle size of the nano silicon dioxide is 20-50nm.

[0069] The method for preparing the above-mentioned nickel-magnesium-containing chromium-free zinc-aluminum coating anticor...

Embodiment 2

[0074] A nickel-magnesium-containing chromium-free zinc-aluminum coating anti-corrosion coating, which is composed of two components A and B in a mass ratio of 3:1, wherein the formula mass percentage of component A is:

[0075] Zinc aluminum alloy powder 25%

[0076] Nano silica 30%

[0077] Sodium lignosulfonate 12%

[0078] Benzotriazole 5%

[0079] Thiodiethylene glycol 0.2%

[0080] Triphenylphosphine 0.5%

[0081] Deionized water balance

[0082] The formula mass percentage of component B is:

[0083] Zirconium tetrafluoride 20%

[0084] Gamma-Aminopropyltriethoxysilane 20%

[0085] Phytate 10%

[0086] Cellulose Acetate 5%

[0087] Ethanol 5%

[0088] Deionized water balance

[0089] Wherein, the zinc-aluminum alloy powder is composed of Zn, Al, Ni and Mg.

[0090] Wherein, the particle size of the nano silicon dioxide is 20-50nm.

[0091] The preparation method is the same as in Example 1.

Embodiment 3

[0093] A nickel-magnesium-containing chromium-free zinc-aluminum coating anti-corrosion coating, which is composed of two components A and B in a mass ratio of 3:1, wherein the formula mass percentage of component A is:

[0094] Zinc aluminum alloy powder 40%

[0095] Nano silica 20%

[0096] Sodium lignosulfonate 18%

[0097] Benzotriazole 3%

[0098] Thiodiethylene glycol 0.5%

[0099] Triphenylphosphine 0.2%

[0100] Deionized water balance

[0101] The formula mass percentage of component B is:

[0102] Zirconium tetrafluoride 30%

[0103] Gamma-Aminopropyltriethoxysilane 15%

[0104] Phytate 18%

[0105] Cellulose Acetate 2%

[0106] Ethanol 9%

[0107] Deionized water balance

[0108] Wherein, the zinc-aluminum alloy powder is composed of Zn, Al, Ni and Mg.

[0109] Wherein, the particle size of the nano silicon dioxide is 20-50nm.

[0110] The preparation method is the same as in Example 1.

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Abstract

The invention discloses nickel-magnesium-containing chromium-free zinc aluminum coating corrosion-resistant coating. The nickel-magnesium-containing chromium-free zinc aluminum coating corrosion-resistant coating consists of a component A and a component B, wherein the mass ratio of the component A to the component B is 3:1; the component A comprises the following raw materials: zinc aluminum alloy powder, nano-silicon dioxide, sodium lignosulphonate, benzotriazole, sulfo-diethylene glycol, triphenylphosphine and deionized water; the component B comprises the following raw materials: zirconium tetrafluoride, gamma-aminopropyl triethoxysilane, inositol hexaphosphate, cellulose acetate-butyrate, ethanol and deionized water; and the zinc aluminum alloy powder comprising Zn, Al, Ni and Mg. The product has the characteristics of no toxicity, no harm, no pollution, low-temperature quick treatment, simplicity in operation, wide sources of raw materials, low price, clean production and the like.

Description

technical field [0001] The invention relates to a metal anticorrosion coating, in particular to a nickel-magnesium-containing chromium-free zinc-aluminum coating anticorrosion coating. Background technique [0002] Chromium-free zinc-aluminum coating is a new surface treatment material developed to meet the VOC regulations of various countries in the world and the environmental protection requirements stipulated by the coating industry, replacing the traditional Dacromet zinc-chromium coating process. [0003] Dacromet is the transliteration and abbreviation of DACROMET, abbreviated as Dacromet, Dacromet, and Dickron. Domestically named zinc-chromium coating, it is a new type of anti-corrosion coating with zinc powder, aluminum powder, chromic acid and deionized water as the main components. Its anti-corrosion principle is to use hexavalent chromium ions in chromium salts to passivate the zinc and aluminum flakes in the coating to improve the anti-corrosion ability of the z...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D5/10
Inventor 张军
Owner TONGXIANG TONGDE ELECTRIC POWER FITTING
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