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Additive for chloride zincification and preparation method and application thereof

A technology of chlorides and additives, which is applied in the field of additives and preparations of chloride galvanizing process, which can solve the problems affecting the quality of coatings and waste water treatment, and achieve the effects of reducing foam generation, easy biodegradation, and simple operation

Inactive Publication Date: 2012-07-11
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the added brightener is insoluble in water, a large amount of surfactant is required as a carrier additive, so that the plating solution generates a large amount of foam during the electroplating process, which affects the quality of the plating layer and wastewater treatment

Method used

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  • Additive for chloride zincification and preparation method and application thereof
  • Additive for chloride zincification and preparation method and application thereof
  • Additive for chloride zincification and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Weigh 100g of octylphenol polyoxyethylene ether into the reactor, raise the temperature to 50°C while stirring, and then slowly add 25g of phosphorus pentoxide within 1.5h. Stirring was stopped, and after the feeding was completed, the temperature was rapidly raised to 90°C to carry out the esterification reaction, and the reaction was stopped after 3 hours to obtain 125 g of condensate.

[0036] (2) Add deionized water equal to the condensate to the condensate, then adjust to neutrality with 5mol / L KOH solution, then cool naturally to room temperature, then add 100g of composite surfactant (polyethylene glycol) to the condensate Diol 800 and sodium lauryl sulfate in a mass ratio of 3:1), heated to 50° C. to completely dissolve the composite surfactant, and then naturally cooled to room temperature to obtain a mixture.

[0037] (3) 20 g of benzylidene acetone and 200 g of absolute ethanol were mixed to obtain a benzylidene acetone ethanol solution.

[0038] (4) Mix...

Embodiment 2

[0042](1) Weigh 100g of nonylphenol polyoxyethylene ether into the reactor, raise the temperature to 50°C while stirring, then slowly add 20g of phosphoric acid within 1.5h, and keep stirring during the feeding process , after the addition was completed, the temperature was rapidly raised to 90° C. for esterification reaction, and the reaction was stopped after 3 hours to obtain 120 g of condensate.

[0043] (2) Add deionized water equal to the condensate in the condensate, then adjust to neutrality with 5mol / L KOH solution, then cool naturally to room temperature, then add 100g of composite surfactant (polyethylene) to the condensate Ether and sodium lauryl sulfate in a mass ratio of 3:1), heated to 50°C to completely dissolve the complex surfactant, and then naturally cooled to room temperature to obtain a mixture.

[0044] (3) 20 g of benzylidene acetone and 200 g of absolute ethanol were mixed to obtain a benzylidene acetone ethanol solution.

[0045] (4) Mix the mixture ...

Embodiment 3

[0049] (1) Weigh 100g of octylphenol polyoxyethylene ether and add it to the reactor, raise the temperature to 50°C while stirring, and then slowly add 25g of phosphorus trichloride within 1.5h. Stirring was stopped, and after the feeding was completed, the temperature was rapidly raised to 90°C to carry out the esterification reaction, and the reaction was stopped after 3 hours to obtain 125 g of condensate.

[0050] (2) Add deionized water equal to that of the condensate to the condensate, then use 5 mol / L KOH solution to adjust to neutrality, and then naturally cool to room temperature to obtain the condensate. Then add 100g of composite surfactant (polyvinyl ether and sodium lauryl sulfate in a mass ratio of 3:1 ratio) to the condensate, heat to 50°C to completely dissolve the composite surfactant, and then naturally cool to room temperature , to obtain a mixture.

[0051] (3) 20 g of benzylidene acetone and 200 g of absolute ethanol were mixed to obtain a benzylidene ace...

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Abstract

The invention discloses an additive for chloride zincification and a preparation method and application of the additive. The method comprises the following steps: allowing an esterification reaction between alkylphenol polyoxyethylene and a phosphorylated reagent at a molar ratio of 1:(1-1.5) to obtain a condensation product, adjusting the pH value of the product to neutrality, mixing with a surfactant, and then mixing with benzylidene acetone ethanol solution to obtain the additive for chloride zincification, wherein the final concentration of benzylidene acetone is 10-30g / L, the final concentration of the surfactant is 100-150g / L, and the final concentration of the condensation product is 100-130g / L. The preparation method of the addtive for chloride zincification provided in the invention is simple and easy to operate and environment-friendly; the obtained additive is non-toxic, easy to biodegrade, green and environment-friendily, makes the chloride zincification process simple and convenient to operate, reduces the foam produced in a plating solution effectively, and reduces the comprehensive cost; and the obtained plating coat is not only uniform and bright, but also has good corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of surface treatment of metal materials, in particular to an additive used in a chloride galvanizing process and its preparation method and application. Background technique [0002] As a surface finishing process, electroplating can be used to decorate and protect the surface of materials and obtain some special functions, so it is widely used in many fields such as machinery, electronics, instruments, meters, light industry and aerospace. The most widely involved plating types in my country's electroplating processing are galvanizing, copper plating, nickel plating and chrome plating, of which galvanizing accounts for 45-50%. The traditional galvanizing process mainly uses cyanide plating solution, which causes great harm to the environment and safety. [0003] In the 21st century, in order to rationally utilize resources and protect the environment, the Chinese government promulgated the Cleaner Producti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/22
Inventor 罗建成莫烨强黄启明李伟善
Owner SOUTH CHINA NORMAL UNIVERSITY
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