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Auxiliary brightening agent for potassium chloride galvanizing and preparation method and use of auxiliary brightening agent

A technology of auxiliary brightener and potassium chloride, applied in the field of auxiliary brightener, can solve the problems of blackening waste rate and high current density, and achieve the effects of low equipment corrosion, high current efficiency and strong emulsifying power

Inactive Publication Date: 2014-05-14
王维福
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A combined brightener made by mixing several common brighteners in a certain proportion. Due to these auxiliary brighteners and combined brighteners, the current density and operating temperature range are limited [(A / d m 2 ) 1.5 (0.5-2.0)] The current density is super high, and the scrap rate of burnt and blackened parts is high when the plated parts are passivated

Method used

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  • Auxiliary brightening agent for potassium chloride galvanizing and preparation method and use of auxiliary brightening agent
  • Auxiliary brightening agent for potassium chloride galvanizing and preparation method and use of auxiliary brightening agent
  • Auxiliary brightening agent for potassium chloride galvanizing and preparation method and use of auxiliary brightening agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Ingredients and dosage of formula raw material for carrier brightener for plating solution:

[0061]

[0062] Preparation method of carrier brightener for plating solution:

[0063] Grind 5 kg of natural gum into powder with a pulverizer, put it into a 100-liter reaction kettle in an equal amount and add it under stirring, heat it with water to 95-100°C to dissolve it, and use a filter to dissolve it. Filter out impurities, then lower the temperature to 80°C; then, add 5 kg of sodium benzoate, 4 kg of sodium methylene bis-naphthalene sulfonate, and 7 kg of sodium dodecylbenzenesulfonate in equal amounts while stirring. method, put it into the reaction kettle, dissolve it, and stir for 1 hour at a temperature of 90-95°C; finally, when the temperature of the reaction kettle is lowered to 60°C, add 0.9 kg of nicotinic acid in an equal amount while stirring , to dissolve, add water to a volume of 100 liters, and stir evenly.

Embodiment 2

[0065] Ingredients and dosage of formula raw material for carrier brightener for plating solution:

[0066]

[0067] According to the ingredients and dosage of the formula raw materials, it is prepared with the same steps and operation method as in Example 1 for preparing the carrier brightener for the plating solution.

Embodiment 3

[0069] Ingredients and dosage of formula raw material for carrier brightener for plating solution:

[0070]

[0071]

[0072] According to the ingredients and dosage of the formula raw materials, it is prepared with the same steps and operation method as in Example 1 for preparing the carrier brightener for the plating solution.

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Abstract

The invention provides an auxiliary brightening agent for potassium chloride galvanizing. The auxiliary brightening agent is combined with a main brightening agent and a carrier brightening agent for application, and is characterized in that the formula of the auxiliary brightening agent comprises natural gum, wherein the natural gum is crushed into powder, the powder is dissolved in hot water, impurities are filtered from the powder through a filter, and the powder is added into the auxiliary brightening agent for uniform stirring. According to the auxiliary brightening agent, the cathodic polarization of a high-current density area can be improved, the dispersion capability of a plating solution can be improved, and plated layer crystals are delicate and bright; the plating solution is high in covering power, and a plated layer is clear, smooth and high in deposition speed, the binding force of the plated layer can meet requirements, high current efficiency is ensured, and a plated part is prevented from being scorched and blackened; the auxiliary brightening agent is easy to prepare, stable, low in cost, pollution-free and environmentally friendly.

Description

technical field [0001] The invention provides an auxiliary brightener for potassium chloride galvanizing, a preparation method and application thereof. Background technique [0002] At present, the combined brightener used in the potassium chloride galvanizing process in China is mainly composed of a main brightener, a carrier brightener and an auxiliary brightener in an appropriate amount. Most of the main brighteners use benzylidene acetone as the main raw material; the more commonly used carrier brighteners are OP-emulsifier and polyoxyethylene fatty alcohol ether; the more commonly used auxiliary brighteners are aromatic carboxylic acids, aromatic sulfonates and Nitrogen-containing heterocyclic compounds, such as cinnamic acid, sodium benzoate, sodium methylene bis-naphthalene sulfonate, and niacin. A combined brightener made by mixing several common brighteners in a certain proportion. Due to these auxiliary brighteners and combined brighteners, the current density and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/22
Inventor 王玉田
Owner 王维福
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