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High-rust-resistance passivant for aluminum alloy and preparing method of high-rust-resistance passivant

A technology of aluminum alloy and passivating agent, which is applied in the coating process of metal materials, etc., can solve problems such as wear resistance and other poor performance, and the anti-rust effect cannot meet the needs of the market.

Inactive Publication Date: 2018-08-10
TIANCHANG RUNDA METAL ANTIRUST AUX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, although the passivating agent used for aluminum alloy has a certain anti-rust effect, but other properties such as wear resistance are poor, and the anti-rust effect is increasingly unable to meet the needs of the market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A kind of passivator for high rust-proof aluminum alloy, its raw material comprises by weight: 2 parts of ethanolamine, 10 parts of calcium chloride, 1 part of copper sulfate, 5 parts of zinc barium metaphosphate, 5 parts of zinc phosphate, vinyltrimethoxy 9 parts of silane, 10 parts of hexamethylenetetramine, 8 parts of sodium dithionite, 1 part of potassium citrate, 0.8 parts of octadecylamine, 3 parts of modified vermiculite, 30 parts of fluotitanic acid, 2 parts of gallic acid, 5 parts of oxidizing agent, 1 part of stabilizer, 60 parts of water.

[0016] The preparation method of the passivating agent for high anti-rust aluminum alloy comprises the following steps: weighing each raw material according to the weight parts, mixing ethanolamine and water uniformly, adding calcium chloride, copper sulfate, barium zinc metaphosphate, Zinc phosphate, vinyltrimethoxysilane, hexamethylenetetramine, sodium dithionite, potassium citrate, octadecylamine, modified vermiculite, ...

Embodiment 2

[0018] A kind of passivator for high anti-rust aluminum alloy, its raw material comprises by weight: 8 parts of ethanolamine, 1 part of calcium chloride, 5 parts of copper sulfate, 1 part of barium zinc metaphosphate, 15 parts of zinc phosphate, vinyltrimethoxy 3 parts of silane, 20 parts of hexamethylenetetramine, 4 parts of sodium dithionite, 5 parts of potassium citrate, 0.2 parts of octadecylamine, 7 parts of modified vermiculite, 10 parts of fluotitanic acid, 8 parts of gallic acid, 2 parts of oxidizing agent, 4 parts of stabilizer, 30 parts of water;

[0019] Wherein, the preparation method of the modified vermiculite is: mix and stir the vermiculite and the hydrogen peroxide solution whose mass fraction is 55wt%, press filter, wash, dry, add nano-CeO 2 , Grinding at 30°C for 60 minutes to obtain modified vermiculite.

[0020] The preparation method of the passivating agent for high anti-rust aluminum alloy comprises the following steps: weighing each raw material accor...

Embodiment 3

[0022] A passivating agent for high anti-rust aluminum alloy, its raw materials include by weight: 5 parts of ethanolamine, 5 parts of calcium chloride, 3 parts of copper sulfate, 2.5 parts of barium zinc metaphosphate, 10 parts of zinc phosphate, vinyl trimethoxy 7 parts of silane, 13 parts of hexamethylenetetramine, 6 parts of sodium dithionite, 3 parts of potassium citrate, 0.5 parts of octadecylamine, 5 parts of modified vermiculite, 17 parts of fluotitanic acid, 4 parts of gallic acid, 4 parts of oxidizing agent, 2.5 parts of stabilizer, 40 parts of water;

[0023] Wherein, the preparation method of the modified vermiculite is: mix and stir the vermiculite and the hydrogen peroxide solution whose mass fraction is 30wt%, press filter, wash, dry, add nano-CeO 2 , Grinding at 50°C for 40 minutes to obtain modified vermiculite;

[0024] The weight ratio of vermiculite to hydrogen peroxide solution is 1:1.5.

[0025] The preparation method of the passivating agent for high a...

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PUM

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Abstract

The invention discloses a high-rust-resistance passivant for an aluminum alloy, and further discloses a preparing method of the high-rust-resistance passivant for the aluminum alloy. The high-rust-resistance passivant comprises the raw materials of, by weight, 2-8 parts of ethanol amine, 1-10 parts of calcium chloride, 1-5 parts of copper sulfate, 1-5 parts of zinc barium metaphosphate, 5-15 partsof zinc phosphate, 3-9 parts of vinyl trimethoxy silane, 10-20 parts of hexamethylene tetramine, 4-8 parts of sodium hydrosulfite, 1-5 parts of potassium citrate, 0.2-0.8 part of octadecylamine, 3-7parts of modified vermiculite, 10-30 parts of fluotitanic acid, 2-8 parts of gallic acid, 2-5 parts of oxidizing agents, 1-4 parts of stabilizers and 30-60 parts of water. The high-rust-resistance passivant has excellent rust resistance, abrasion resistance, corrosion resistance and anti-cracking performance and is high in passivation efficiency and short in passivation time, a passivation film can be rapidly formed on the surface of the aluminum alloy, the film layer is uniform and dense, and the surface smoothness is good.

Description

technical field [0001] The invention relates to the field of passivating agents, in particular to a passivating agent for high antirust aluminum alloys and a preparation method thereof. Background technique [0002] Passivation is a method to transform the metal surface into a state that is not easily oxidized, and to delay the corrosion rate of the metal. In addition, the phenomenon of an active metal or alloy in which the chemical activity is greatly reduced and becomes a noble metal state is also called passivation. [0003] In the prior art, although the passivating agent used for aluminum alloy has a certain anti-rust effect, other properties such as wear resistance are poor, and the anti-rust effect is increasingly unable to meet the needs of the market. Contents of the invention [0004] Based on the technical problems existing in the background technology, the present invention proposes a passivator for high rust-proof aluminum alloys and a preparation method ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/36
CPCC23C22/367C23C2222/20
Inventor 林伟江海涛
Owner TIANCHANG RUNDA METAL ANTIRUST AUX