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Salt-fog-resistant passivating agent special for galvanized steel sheet and preparation method of salt-fog-resistant passivating agent

A galvanized steel sheet, salt spray resistance technology, applied in the direction of metal material coating process, can solve the problems of poor salt spray resistance, insufficient corrosion resistance, etc., achieve good passivation performance, good salt spray resistance, Enhanced effect of salt spray resistance

Inactive Publication Date: 2015-03-25
WUXI EPIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the corrosion resistance of the passivator to the external environment is not strong enough, and the salt spray resistance is poor.

Method used

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  • Salt-fog-resistant passivating agent special for galvanized steel sheet and preparation method of salt-fog-resistant passivating agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Special salt spray passivation agent for galvanized steel sheet, including the following components in parts by weight: 65 parts of silicon dioxide, 80 parts of barium metaborate, 108 parts of polyisobutylene succinimide, 83 parts of sodium hydrogen phosphate, hydroxyethylene 50 parts of base diphosphonic acid, 40 parts of glycerin, 50 parts of anionic surfactant, 60 parts of fatty acyldiethanolamine, 50 parts of additives, and 500 parts of water.

[0023] The anionic surfactant is polyacrylamide.

[0024] The auxiliary agent is glass cellulose.

[0025] The preparation method of the above special corrosion-resistant passivator for galvanized steel sheets comprises the following steps: adding water into the reaction kettle, and then sequentially adding silicon dioxide, barium metaborate, and polyisobutylene succinyl Imine, sodium hydrogen phosphate, anionic surfactant, fatty acyldiethanolamine, additives, heat up to 65°C, stir for 3 hours; add hydroxyethylene diphospho...

Embodiment 2

[0030] Salt spray passivation agent for galvanized steel sheets, including the following components in parts by weight: 50 parts of silicon dioxide, 60 parts of barium metaborate, 100 parts of polyisobutylene succinimide, 70 parts of sodium hydrogen phosphate, hydroxyethylene 30 parts of base diphosphonic acid, 20 parts of glycerol, 30 parts of anionic surfactant, 40 parts of fatty acyldiethanolamine, 30 parts of additives, and 300 parts of water.

[0031] The anionic surfactant is sodium succinate sulfonate.

[0032] The auxiliary agent is tetrafluoroethylene.

[0033] The preparation method of the above special corrosion-resistant passivator for galvanized steel sheets comprises the following steps: adding water into the reaction kettle, and then sequentially adding silicon dioxide, barium metaborate, and polyisobutylene succinyl Imine, sodium hydrogen phosphate, anionic surfactant, fatty acyldiethanolamine, additives, heat up to 60°C, stir for 2 hours; add hydroxyethylene ...

Embodiment 3

[0038] Special salt spray passivation agent for galvanized steel, including the following components in parts by weight: 80 parts of silicon dioxide, 100 parts of barium metaborate, 120 parts of polyisobutylene succinimide, 90 parts of sodium hydrogen phosphate, hydroxyethylene 80 parts of base diphosphonic acid, 70 parts of glycerol, 80 parts of anionic surfactant, 80 parts of fatty acyldiethanolamine, 100 parts of additives, and 1000 parts of water.

[0039] The anionic surfactant is sodium alkylbenzene sulfonate.

[0040] The auxiliary agent is tetrafluoroethylene.

[0041] The preparation method of the above special corrosion-resistant passivator for galvanized steel sheets comprises the following steps: adding water into the reaction kettle, and then sequentially adding silicon dioxide, barium metaborate, and polyisobutylene succinyl Imine, sodium hydrogen phosphate, anionic surfactant, fatty acyldiethanolamine, additives, heat up to 70°C, stir for 4 hours; add hydroxyet...

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Abstract

The invention discloses a salt-fog-resistant passivating agent special for a galvanized steel sheet and a preparation method of the salt-fog-resistant passivating agent. The passivating agent comprises the following components in parts by weight: 50-80 parts of silicon dioxide, 60-100 parts of barium metaborate, 100-120 parts of polyisobutylene succinimide, 70-90 parts of sodium hydrogen phosphate, 30-80 parts of 1-hydroxyethylidene-1,1-diphosphonic acid, 20-70 parts of glycerol, 30-80 parts of an anionic surface active agent, 40-80 parts of fatty acyl diethanol amine, 30-100 parts of an auxiliary agent and 300-1000 parts of water. The preparation method comprises the following steps: adding water into a reaction kettle, sequentially adding silicon dioxide, barium metaborate, polyisobutylene succinimide, sodium hydrogen phosphate, the anionic surface active agent, fatty acyl diethanol amine and the auxiliary agent, heating to 60-70 DEG C, and stirring to react for 2-4 hours; and adding the rest components, stirring to react for 30-80 minutes, and cooling. When the passivating agent disclosed by the invention is applied to the galvanized steel sheet, the salt fog resisting time of the galvanized steel sheet can be obviously improved.

Description

technical field [0001] The invention relates to the field of passivators, in particular to a special salt spray-resistant passivator for galvanized steel sheets and a preparation method thereof. Background technique [0002] The patent application number is "CN201310708234", and the Chinese patent application titled "Synthesis method of high-efficiency single-metal passivator" discloses a synthesis method of high-efficiency single-metal passivator. The specific steps are: (1) adjust the pH Add 6~20kg of agent, 10~35kg of organic acid, 20~80kg of organic amine, 120~180kg of deionized water into a 500kg reaction flask, and stir for 10min; (2) Add 80~120kg of antimony powder, and the temperature rises to 80~100℃, Add 100-170kg of oxidant dropwise; (3) Condensate and reflux for 1-2 hours; (4) Add 15-35kg of stabilizer, stir to cool down to room temperature, and discharge. The invention greatly improves the storage period and use stability of the passivator by adding a system s...

Claims

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Application Information

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IPC IPC(8): C23C22/07
CPCC23C22/07
Inventor 尤为
Owner WUXI EPIC TECH
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