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A kind of aluminum alloy corrosion inhibitor used in alkaline water-based cleaning agent

A technology of aluminum alloy corrosion inhibitor and water-based cleaning agent, which is applied in the field of aluminum alloy corrosion inhibitor, can solve the problems of aluminum alloy surface quality change, easy discoloration and loss of light, etc., and achieve no white hair and spots, good compatibility, The effect of low residue

Active Publication Date: 2019-03-19
NANJING KERUN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because aluminum and its alloys are relatively active, they are easily affected by alkaline corrosive media, and are easy to change color and lose light, causing changes in the surface quality of aluminum alloys.
At present, the inorganic corrosion inhibitors commonly used in alkaline aluminum alloy cleaning agents mainly include dichromate, silicate, phosphate, borate, etc., and the organic corrosion inhibitors mainly include silane, glucose, phosphate, agar, Surfactants, etc., the use of the above corrosion inhibitors alone has unilateral or multiple problems such as environmental protection, health, stability, and efficiency.

Method used

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  • A kind of aluminum alloy corrosion inhibitor used in alkaline water-based cleaning agent
  • A kind of aluminum alloy corrosion inhibitor used in alkaline water-based cleaning agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A corrosion inhibitor for aluminum alloys used in alkaline water-based cleaning agents, consisting of the following components by weight percentage: 2% sodium gluconate, 0.5% zinc acetate, 2% sodium polyacrylate, 0.2% silica sol, 1 % silicone acrylic resin, 4% triethanolamine amide caproate, 4% PEG1500, 3% EP0244 and 83.3% water.

[0018] The aluminum alloy corrosion inhibitor of embodiment 1 adopts following preparation process to make:

[0019] Step 1, adding the water of formula quantity into the reaction kettle, adding the sodium gluconate and zinc acetate of formula quantity into the reaction kettle at normal temperature, stirring until the materials are completely dissolved;

[0020] Step 2: Add the formulated amount of sodium polyacrylate, silica sol, silicone acrylic resin, triethanolamine amide caproate, PEG1500 and EP0244 into the reaction kettle of step 1, and stir for 30 minutes until the solution is clear and transparent.

[0021] According to the corrosio...

Embodiment 2

[0023] A corrosion inhibitor for aluminum alloys used in alkaline water-based cleaning agents, consisting of the following components by weight percentage: 4% sodium gluconate, 0.2% zinc acetate, 2% sodium polyacrylate, 0.3% silica sol, 2% % silicone acrylic resin, 1% triethanolamine amide caproate, 6% PEG1500, 5% EP0244 and 79.5% water.

[0024] The aluminum alloy corrosion inhibitor of embodiment 2 adopts following preparation process to make:

[0025] Step 1, adding the water of formula quantity into the reaction kettle, adding the sodium gluconate and zinc acetate of formula quantity into the reaction kettle at normal temperature, stirring until the materials are completely dissolved;

[0026] Step 2: Add the formulated amount of sodium polyacrylate, silica sol, silicone acrylic resin, triethanolamine amide caproate, PEG1500 and EP0244 into the reaction kettle of step 1, and stir for 30 minutes until the solution is clear and transparent.

[0027] According to the corrosi...

Embodiment 3

[0028] Take a certain amount of the aluminum alloy corrosion inhibitor of Example 1 and mix it with an alkaline water-based cleaning agent to obtain a stand-by solution (pH value is 11.0) with a corrosion inhibitor mass percent concentration of 3%; put the stand-by solution in immersion In the liquid tank of a type washing machine, heat the temperature of the tank liquid to 60±1°C, soak the aluminum alloy piston of a certain piston company in the solution through the material frame, and wash it with clean water at room temperature after soaking for 10 minutes. Air dry. The aluminum alloy corrosion inhibitor of the invention has a protective effect on the aluminum alloy piston during the alkaline cleaning process, no alkaline corrosion and discoloration occur on the surface of the workpiece, the processed surface is bright, and the subsequent coating treatment does not peel off, meeting the use requirements.

[0029] The aluminum alloy corrosion inhibitor of the present inventi...

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Abstract

The invention discloses an aluminum alloy corrosion inhibitor applied to an alkaline water-based cleaning agent. The aluminum alloy corrosion inhibitor is prepared from the following components in percentage by weight: 2-4 percent of sodium gluconate, 0.2-1 percent of zinc acetate, 1-2 percent of sodium polyacrylate, 0.1-0.3 percent of silicasol, 1-2 percent of organosilicon acrylic resin, 1-4 percent of amido hexanoate triethanolamine, 4-6 percent of polyethylene glycol, 3-5 percent of a fatty alcohol EO-PO block copolymer and 75-85 percent of water; the molecular weight of the sodium polyacrylate is 3000-6000; the molecular weight of the polyethylene glycol is 400-2000; and the fatty alcohol EO-PO block copolymer is a fatty alcohol alkoxy compound with carbon chain distribution being 10-12, and the cloud point of 1 percent aqueous solution of the fatty alcohol EO-PO block copolymer is lower than 20 DEG C. The aluminum alloy corrosion inhibitor is good in compatibility with an alkaline cleaning agent and is very good in corrosion inhibition effect to all aluminum alloys at room temperature under the heating condition.

Description

technical field [0001] The invention relates to an aluminum alloy corrosion inhibitor, in particular to an aluminum alloy corrosion inhibitor used in alkaline water-based cleaning agents. Background technique [0002] Aluminum alloy has the advantages of light weight, good mechanical properties, and good thermal and electrical conductivity. It is widely used in aviation, rail transit, construction, automobiles and other fields. Metal surfaces are easily contaminated with oil during processing, transportation, and storage. The common ones are Rolling oil, calendering oil, lubricating oil, cutting fluid, etc., all involve oil cleaning on metal surfaces according to different processing processes. Common degreasing methods for metal surfaces include solvent cleaning, acid cleaning and alkaline cleaning. Solvent cleaning is gradually replaced by water-based cleaning agents due to poor safety or pollution to the atmosphere; acid cleaning agents are restricted by environmental pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/18C23G1/22
CPCC23G1/18C23G1/22
Inventor 黄国都周海荣刘昊李解王娟聂晓霖
Owner NANJING KERUN NEW MATERIAL TECH