Four-in-one medium-low-temperature alkaline degreaser and preparation and use methods thereof

An alkaline degreasing and low temperature technology, which is applied in the field of four-in-one medium and low temperature alkaline degreasing agents, can solve the problems of increased brightness of aluminum and aluminum alloys, difficult treatment of acid-containing wastewater, and large fluorine pollution, and achieve the goal of reducing resources Waste, good degreasing and brightening and bright cleaning, saving labor costs

Inactive Publication Date: 2018-12-18
FOSHAN HAIHUA SURFACE TREATMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a four-in-one medium-low temperature alkaline degreasing process to solve the disadvantages of insufficient brightness after treatment, large fluorine pollution, and difficult treatment of acid-containing wastewater produced in the existing...

Method used

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  • Four-in-one medium-low-temperature alkaline degreaser and preparation and use methods thereof
  • Four-in-one medium-low-temperature alkaline degreaser and preparation and use methods thereof
  • Four-in-one medium-low-temperature alkaline degreaser and preparation and use methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A four-in-one medium-low temperature alkaline degreaser, by weight percentage, the four-in-one medium-low temperature alkaline degreaser comprises the following components:

[0024]

[0025]

[0026] The four-in-one medium-low temperature alkaline degreaser is a four-in-one medium-low temperature alkaline degreaser that integrates the four effects of degreasing, alkali washing, polishing and neutralization.

[0027] Further, the basic compound is sodium methyl silicate.

[0028] Further, the molecular weight of the polyethylene glycol is 8000-12000.

[0029] The sodium methyl silicate is the main basic compound that reacts with aluminum and aluminum alloys. When it reacts with the aluminum material with visible bubbles, at the same time, its silicate root has a good protective effect on the surface of the aluminum material, making it It will not produce adverse effects such as corrosion spots, so as to achieve the effect of smooth and beautiful aluminum surface a...

Embodiment 2

[0047] On the basis of Example 1, this Example 2 is used as a preferred embodiment, wherein, the four-in-one medium and low temperature alkaline degreasing agent, by weight percentage, includes the following components:

[0048]

[0049] The basic compound is sodium methylphosphate.

[0050]The molecular weight of the polyethylene glycol is 8000.

[0051] During use, in the degreasing and brightening tank, the concentration of the four-in-one medium-low temperature alkaline degreasing agent in the four-in-one medium-low temperature alkaline degreasing tank liquid is 60 g / L.

[0052] The pH value of the four-in-one medium-low temperature alkaline degreasing bath liquid is 11.2.

[0053] The temperature of the four-in-one medium-low temperature alkaline degreasing bath solution is 25° C. (normal temperature).

[0054] The time for the four-in-one medium-low temperature alkaline degreasing bath liquid to treat workpieces is 5 minutes.

Embodiment 3

[0056] On the basis of Example 1, this Example 3 is used as a preferred embodiment, wherein, the four-in-one medium and low temperature alkaline degreasing agent, by weight percentage, includes the following components:

[0057]

[0058] The basic compound is sodium methylphosphate.

[0059] The molecular weight of the polyethylene glycol is 12000.

[0060] During use, in the alkaline degreasing tank, the concentration of the four-in-one medium-low temperature alkaline degreasing agent in the four-in-one medium-low temperature alkaline degreasing tank liquid is 70 g / L.

[0061] The pH value of the four-in-one medium-low temperature alkaline degreasing bath liquid is 11.6.

[0062] The temperature of the four-in-one medium-low temperature alkaline degreasing bath liquid is 40°C when used.

[0063] The time for the four-in-one medium-low temperature alkaline degreasing bath liquid to treat workpieces is 4.5 minutes.

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Abstract

The invention discloses a four-in-one medium-low-temperature alkaline degreaser and preparation and use methods thereof. The four-in-one medium-low-temperature alkaline degreaser comprises the following components including, by weight, 40% to 50% of sodium methyl silicate, 10% to 20% of sodium carbonate, 5% to 10% of sodium gluconate, 3% to 5% of ethylenediamine tetraacetic acid tetrasodium salt,3% to 5% of sodium molybdate, 1% to 2% polyethylene glycol, 0.1%-0.2% lauryl sodium sulfate, 0.1%-0.2% of an op-10 emulsifier, 0.1%-0.2% of dodecyl glucoside and the balance water. The four-in-one medium-low-temperature alkaline degreaser is an alkaline bright cleaning degreaser without heavy metal, fluorine, phosphorus and ammonia nitrogen, has no toxic and side effects on the human body and an operating environment, and is a high-performance surface treatment additive integrating degreasing, alkali wash, polishing and neutralizing, and is very suitable for oxidation pretreatment of aluminumprofiles.

Description

technical field [0001] The invention relates to the technical field of degreasing and brightening treatment of aluminum and aluminum alloys, in particular to a four-in-one medium-low temperature alkaline degreasing agent and its preparation and use methods. Background technique [0002] At present, with the vigorous development of the national economy and the construction industry, my country has become a major aluminum consumption country. Because the traditional aluminum and aluminum alloys must go through degreasing and cleaning (sometimes need to increase the gloss) process before oxidation or spraying, the acid degreasing and bright cleaning process is generally used. However, the traditional acid degreasing and bright cleaning agent contains a large amount of The fluorine and phosphorus contained in them are more harmful to the human body and cause serious pollution to the environment, and the acid water produced in the acid degreasing process has a great burden on the...

Claims

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Application Information

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IPC IPC(8): C23G1/22C23G1/16
CPCC23G1/16C23G1/22
Inventor 王相刚夏良文刘国永
Owner FOSHAN HAIHUA SURFACE TREATMENT TECH CO LTD
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