Passivation skin film agent special for aluminum product and preparation method of passivation skin film agent

A film agent, aluminum product technology, applied in the direction of metal material coating technology, etc., can solve the problems of skin allergies, genetic damage, toxicity, etc., to increase adhesion and corrosion resistance, improve anti-oxidation effect, good anti-corrosion The effect of the oxidation effect

Inactive Publication Date: 2018-03-23
北京安邦之星科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the traditional chromate treatment process, the treatment liquid is highly toxic and seriously pollutes the environment, especially the hexavalent chromium has strong toxicity, which may cause skin allergies, cause genetic damage, and may cause cancer if inhaled. recognized cause of lung cancer

Method used

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  • Passivation skin film agent special for aluminum product and preparation method of passivation skin film agent
  • Passivation skin film agent special for aluminum product and preparation method of passivation skin film agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] S1: Add 15kg of fluorozirconic acid, 5kg of vinyltrimethoxysilane, and 9kg of sodium phytate into 200kg of purified water. After the solid matter is completely dissolved, slowly add 2,3,5,6-tetramethyl to the mixture Base-1,4-dioxacyclo-2,5-diol 1.5kg, polyvinyl alcohol 0.75kg, polyethylene glycol 0.75kg, the addition time is 15min, stir evenly until the solid matter is completely dissolved, wherein, the system temperature 44°C;

[0029] S2: Take 15kg of epoxy resin and add it to the mixed solution obtained in S1, and stir evenly for 25 minutes until the solid matter is completely dissolved, wherein the system temperature is 55°C;

[0030] S3: Add 5 kg of titanium dioxide and 13 kg of ethylenediaminetetraacetic acid into the mixed solution obtained in S2, and stir evenly for 25 minutes until the solid matter is completely dissolved to prepare a special passivation film agent for aluminum products, wherein the system temperature is 34°C.

Embodiment 2

[0032] S1: Take 10kg of fluorozirconic acid, 4kg of 3-aminopropyl trimethoxy silicon, and 6kg of potassium phytate and add it to 200kg of pure water. After the solid matter is completely dissolved, slowly add 2,3,5,6 -Tetramethyl-1,4-dioxacyclo-2,5-diol 2kg, polyvinyl alcohol 1kg, polyethylene glycol 0.5kg, adding time is 15min, stirring evenly until the solid matter is completely dissolved, wherein, the system The temperature is 46°C;

[0033] S2: Take 10kg of acrylic resin and add it into the mixed solution obtained in S1, and stir evenly for 20 minutes until the solid matter is completely dissolved, wherein the system temperature is 51°C;

[0034] S3: Add 4 kg of titanium dioxide and 14 kg of sodium ethylenediamine tetraacetate into the mixed solution obtained in S2, and stir evenly for 30 minutes until the solid matter is completely dissolved to prepare a special passivation film agent for aluminum products, wherein the system temperature is 31°C.

Embodiment 3

[0036] S1: Add 20kg of fluorozirconic acid, 4kg of vinyltrimethoxysilane, and 6kg of potassium phytate into 200kg of purified water. After the solid matter is completely dissolved, slowly add 2,3,5,6-tetramethyl to the mixture Diol-1,4-dioxacyclo-2,5-diol 2kg, polyvinyl alcohol 0.5kg, polyethylene glycol 1kg, adding time is 20min, stirring evenly until the solid matter is completely dissolved, wherein, the system temperature is 46 ℃; S2: Take 10kg of epoxy resin and add it to the mixed liquid obtained in S1, and stir evenly for 30 minutes until the solid matter is completely dissolved, and the system temperature is 51°C;

[0037] S3: Add 4 kg of titanium dioxide and 14 kg of sodium ethylenediamine tetraacetate into the mixed solution obtained in S2, and stir evenly for 20 minutes until the solid matter is completely dissolved to prepare a special passivation coating agent for aluminum products, wherein the system temperature is 37°C.

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Abstract

The invention relates to a passivation skin film agent special for an aluminum product and a preparation method of the passivation skin film agent. The passivation skin film agent comprises the following raw materials in parts by weight: 10-20 parts of hexafluorozirconic acid, 6-12 parts of phytate, 2-4 parts of high-molecular compound, 10-20 parts of water soluble resin, 4-6 parts of a silane coupling agent, 4-6 parts of titanium dioxide and 12-14 parts of a chelating agent, wherein the high-molecular compound is a mixture of 2,3,5,6-tetramethyl-1,4-dioxy heterocyclic group-2,5-glycol, polyvinyl alcohol and polyethylene glycol. The passivation skin film agent is a non-toxic harmless water base treatment product, can rapidly form a compact skin film on the surfaces of aluminum and aluminumalloy through a spraying or soaking manner, has excellent anti-oxidation effect, enlarges the adhesive force of a coating and a matrix and improves the corrosion resistance of the coating.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, more specifically, it relates to a special passivation coating agent for aluminum products and a preparation method thereof. Background technique [0002] Film agent is a kind of metal surface treatment agent, which can react with metal, and form a water-insoluble, chemically inert, and firmly attached protective film on the metal surface while removing rust on the metal surface. This protective film is beneficial to Preventing metal oxidation is also beneficial in the subsequent metal surface spraying process to enhance the bonding and adhesion of the sprayed paint film, plastic powder and metal. [0003] The traditional coating agent mainly uses chromate to passivate the metal surface. Because chromate has the advantages of strong stability, regardless of water quality, mature technology, and low cost, chromate products account for more than 90% of aluminum products. market. H...

Claims

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Application Information

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IPC IPC(8): C23C22/34
CPCC23C22/34C23C2222/20
Inventor 刘海山
Owner 北京安邦之星科技有限公司
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