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Novel environment-friendly ash removing agent for aluminum alloy and preparation method thereof

An aluminum alloy, a new type of technology, applied in the field of aluminum alloy new environmental protection deashing agent and its preparation, can solve the problems of blood, nerve, reproductive system harm, difficult wastewater treatment, benzene substances, etc., to achieve low sewage treatment cost, Good effect of protecting health and environmental performance

Inactive Publication Date: 2021-08-20
江门市优博科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Due to the high toxicity of hexavalent chromium, the environmental air pollution caused by the use of nitric acid and the high cost of ammonia nitrogen in sewage treatment, the chromium-free and ammonia-nitrogen-free environmental protection ash remover is a research focus in recent years. CN109518200 uses high-valent iron salts as oxidants, but high-valent iron Salt is red-yellow, and sewage treatment needs to convert red-yellow into colorless, and the required cost is high. CN1252320 selects benzenesulfonic acid as oxidant, and benzenesulfonic acid contains stupid, and benzene is harmful to human blood and nerves. , the reproductive system has a strong hazard, and benzene is difficult to degrade, and wastewater treatment is more difficult

Method used

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  • Novel environment-friendly ash removing agent for aluminum alloy and preparation method thereof
  • Novel environment-friendly ash removing agent for aluminum alloy and preparation method thereof
  • Novel environment-friendly ash removing agent for aluminum alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026]

[0027] (2) Production method: first add half of the required water, the conductivity of the water is not more than 100μS / m, then add diperoxide azelaic acid and stir for 8-10 minutes at a stirring speed of 80-100 rpm, After adding citric acid, ethanethiol, sodium borate and sodium alkyl sulfate, the stirring time is 10-20 minutes, and the stirring speed is 80-100 rpm.

Embodiment 2

[0029]

[0030]

[0031] (2) Production method: first add half of the required water, the conductivity of the water is not more than 100μS / m, then add diperoxide azelaic acid and stir for 8-10 minutes at a stirring speed of 80-100 rpm, After adding 2,2-dihydropropane peroxide, tartaric acid, ethanedithiol, sodium acetate, and fatty alcohol polyoxyethylene ether sodium sulfate, the stirring time is 10-20 minutes, and the stirring speed is 80-100 rpm.

Embodiment 3

[0033]

[0034] (2) Production method: first add half of the required water, the conductivity of the water is not more than 100μS / m, then add diperoxide azelaic acid and stir for 8-10 minutes at a stirring speed of 80-100 rpm, After adding 2,2-bis-(4,4-di-tert-butylperoxycyclohexyl)propane, malic acid, 1-propanethiol, sodium sulfate, glycerin fatty acid ester sodium sulfate, the stirring time is 10-20 minutes , the stirring speed is 80-100 rpm.

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Abstract

The invention discloses a novel environment-friendly ash removing agent for an aluminum alloy and a preparation method thereof. The ash removing agent comprises the following components including, by weight part, 5-15 grams per liter of organic peroxide, 1-3 grams per liter of organic acid complexing agent, 0.2-0.5 gram per liter of organic corrosion inhibitor, 2-3 grams per liter of PH buffering agent and 0.2-0.3 gram per liter of surface active agent. According to the novel environment-friendly ash removing agent for the aluminum alloy and the preparation method thereof, the ash removing agent is used for removing ash hanging to the aluminum alloy after alkaline corrosion and chemical polishing, the ash removing speed is high, the phenomenon of over etching is avoided, metal salt, phosphorus, fluorine and benzene are not contained, the environment-friendly performance is good, no poisonous or pernicious gas is generated in the ash removing process, and the ash removing agent is friendly to environment, and beneficial for protecting body health of operators.

Description

technical field [0001] The invention relates to the technical field of surface treatment of aluminum alloys, in particular to a novel environmental-friendly deashing agent for aluminum alloys and a preparation method thereof. Background technique [0002] After the aluminum alloy is corroded by acid and alkali, because the corrosion speed of various components in the aluminum alloy is inconsistent in acid and alkali, the dissolution speed is inconsistent. Aluminum is a very active metal and dissolves quickly. Copper, zinc, magnesium , Silicon, iron, etc. dissolve slowly, so other components are enriched and residual on the surface of the aluminum alloy, resulting in the presence of black, dark gray, and taupe gray. [0003] At present, the ash removal process used in China mainly includes the following categories: [0004] (1) 3-5% chromic acid + 3-5% nitric acid + 3-5% sulfuric acid: [0005] Chromic acid contains highly toxic hexavalent chromium heavy metal ions. There a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/12C23G1/06
CPCC23G1/125C23G1/065C23G1/068
Inventor 陈怀超
Owner 江门市优博科技有限公司
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