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Galvanization passivation sealant and preparation method thereof

A sealing agent and raw material technology, applied in the field of galvanized passivation sealing agent and its preparation, can solve the problems of poor sealing effect and poor wear resistance, and achieve the effects of increasing wear resistance, improving wear resistance and prolonging service life

Inactive Publication Date: 2017-11-21
吕莉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a galvanized passivation sealant and its preparation method in view of the disadvantages of poor wear resistance and poor sealing effect of the traditional galvanized sealant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0025] First, weigh 400g of attapulgite and add it to a pulverizer for crushing, and pass through an 80-mesh sieve to obtain the sieved product. Weigh 60g of the sieved product and 40g of magnesium sulfate and add them to a beaker filled with 200mL of water. Stir and mix for 35min. , then add 30g of sodium hydroxide to the beaker, and move the beaker into a water bath, control the temperature of the water bath to 60°C, and stir the reaction for 60 minutes. After the reaction is completed, filter the material in the beaker to obtain filter residue, which is placed in In the furnace, the temperature was programmed to rise to 500°C at a rate of 5°C / min. After heat preservation and roasting for 1 hour, the temperature was raised to 1100°C and continued to roast for 2 hours. After the roasting was completed, the roasted product was cooled to room temperature with the furnace to obtain modified attapulgite. Then weigh 200g of cellulose and add it to a pulverizer to pulverize it, and ...

example 2

[0028]First, weigh 450g of attapulgite and add it to a pulverizer for crushing, and pass through a 90-mesh sieve to obtain the sieved product. Weigh 70g of the sieved product and 45g of magnesium sulfate and add them to a beaker filled with 250mL of water, and stir and mix for 38 minutes. , then add 35g of sodium hydroxide to the beaker, and move the beaker into a water bath, control the temperature of the water bath to 65°C, stir and react for 75min, after the reaction is completed, filter the material in the beaker to obtain a filter residue, which is placed in a muffle In the furnace, the temperature was programmed to rise to 550°C at a rate of 8°C / min. After 2 hours of heat preservation and roasting, the temperature was raised to 1150°C and continued to roast for 3 hours. After the roasting was completed, the roasted product was cooled to room temperature with the furnace to obtain modified attapulgite. Weigh 250g of cellulose and add it to a pulverizer to pulverize it, and...

example 3

[0031] First, weigh 500g of attapulgite and add it to a pulverizer for crushing, and pass through a 100-mesh sieve to obtain the sieved product. Weigh 80g of the sieved product and 50g of magnesium sulfate and add them to a beaker filled with 300mL of water. Stir and mix for 40min. , then add 40g sodium hydroxide to the beaker, and move the beaker into a water bath, control the temperature of the water bath to 70°C, stir and react for 90min, after the reaction is finished, filter the material in the beaker to obtain a filter residue, which is placed in a muffle In the furnace, the temperature was programmed to rise to 600°C at a rate of 10°C / min. After 2 hours of heat preservation and roasting, the temperature was raised to 1200°C and continued to roast for 3 hours. After the roasting was completed, the roasted product was cooled to room temperature with the furnace to obtain modified attapulgite. Then weigh 300g of cellulose and add it to a pulverizer to pulverize it, and pass...

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Abstract

The invention discloses a galvanization passivation sealant and a preparation method thereof, and belongs to the technical field of galvanized surface treatment. The preparation method of the galvanization passivation sealant includes the steps that, magnesium hydrate sediment is obtained by reacting magnesium sulfate with sodium hydroxide, and the magnesium hydrate is loaded through the adsorption effect of attapulgite; and then magnesium oxide whiskers are generated through calcinations; cellulose is treated by using biogas slurry so that the cellulose can be degraded partially; cerium hydroxide is generated by reacting cerous nitrate with ammonium hydroxide, and the cerium hydroxide is deposited on the surface of the cellulose through the adsorption effect; calcinations is conducted on the cerium hydroxide, so that cerium oxide is obtained through degradation of the cerium hydroxide; the cerium oxide can catalyze zinc and magnesium silicate to react to generate a zinc-base silicate protection film at a certain temperature, therefore the abrasive resistance of a film layer is improved; and dopamine is compounded, the passivation effect is improved through a polymer film layer which is formed through self-polymerization of the dopamine under an alkaline condition. The obtained galvanization passivation sealant is good in passivation effect after being used, at the same time, the formed film layer has good abrasive resistance, and does not need to be dried at a high temperature, and the galvanization passivation sealant has wide application prospects.

Description

technical field [0001] The invention relates to a galvanized passivation sealing agent and a preparation method thereof, belonging to the technical field of galvanized surface treatment. Background technique [0002] As a typical protective coating, galvanizing plays an important role in the electroplating process. At present, the output of galvanizing in the manufacturing industry accounts for about 50% of the total output of electroplating. This type of plating has the characteristics of simple process, good operability, good economical anti-corrosion performance of the coating, etc., and has been widely used in aerospace, automobile, motorcycle, electronic communication and computer manufacturing and other fields. [0003] The traditional method of strengthening passivation is to add a layer of organic matter on the basis of ordinary passivation, and use its interaction with the passivation film to form a new film with heat resistance and corrosion resistance. The main ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/05C25D5/48
CPCC23C22/05C25D5/48
Inventor 孙剑娥盛开洋王维
Owner 吕莉