A kind of organic silicon modified corrosion inhibitor and preparation method thereof
A corrosion inhibitor and organosilicon technology, applied in the field of corrosion inhibitor and its preparation, organosilicon-modified corrosion inhibitor and its preparation, can solve the problems of unstable film formation on the surface of metal internal components, weak temperature adaptability, etc. , to achieve the effect of strengthening surface adsorption and binding force, strong hydrophobicity and insulation, and improving thermal stability
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Embodiment 1
[0022] Take 400mL of ethylene glycol, first add 200mL of ethylene glycol into a 1000mL round bottom flask, preheat to 75±5°C, add 1.5g of 3-methyl-6-oxindazole under the condition of nitrogen protection and continuous stirring, After completely dissolving, take 20g of hydrogen-containing linear polydimethylsiloxane (active hydrogen content is about 0.5wt%) with an average molecular weight of about 2000, add continuously and slowly, and then pour all the remaining 200mL of ethylene glycol into the container, Heat up to 105±5°C while stirring, then add about 4g of 0.1mol / L sodium hydroxide solution dropwise with a dropper, the reaction process is carried out under nitrogen protection for 7 hours, and finally filter the reaction mixture to remove insoluble matter and reduce pressure The solvent is distilled off to obtain the target product, an organosilicon-modified corrosion inhibitor. The content of residual active hydrogen in the target product is determined by nuclear magneti...
Embodiment 2
[0024] Take 500mL of ethylene glycol, first add 250mL of ethylene glycol into a 1000mL round bottom flask, preheat to 85±5°C, add 2.5g of 3-methyl-6-oxindazole under the condition of nitrogen protection and continuous stirring, After completely dissolving, take 20g of hydrogen-containing linear polydimethylsiloxane (active hydrogen content is about 0.5wt%) with an average molecular weight of about 2000, add continuously and slowly, and then pour all the remaining 250mL of ethylene glycol into the container, Heat up to 105±5°C while stirring, then add about 4g of 0.1mol / L sodium hydroxide solution dropwise with a dropper, the reaction process is carried out under nitrogen protection for 7 hours, and finally filter the reaction mixture to remove insoluble matter and reduce pressure The solvent is distilled off to obtain the target product, an organosilicon-modified corrosion inhibitor. The content of residual active hydrogen in the target product is determined by nuclear magneti...
Embodiment 3
[0026] Take 400mL of ethylene glycol, first add 200mL of ethylene glycol into a 1000mL round bottom flask, preheat to 75±5°C, add 1.5g of 6-hydroxyindazole under the condition of nitrogen protection and continuous stirring, after completely dissolving, take Add 20g of hydrogen-containing linear polydimethylsiloxane (with an active hydrogen content of about 0.5wt%) with an average molecular weight of about 2000, continuously and slowly, and then pour all the remaining 200mL of ethylene glycol into the container, and heat up to 105±5°C, then drop about 4g of 0.1mol / L sodium hydroxide solution with a dropper, the reaction process was carried out under nitrogen protection for 7 hours, and finally the reaction mixture was filtered to remove insoluble matter and the solvent was distilled off under reduced pressure, that is The target product, an organosilicon-modified corrosion inhibitor, was obtained. The content of residual active hydrogen in the target product is determined by nu...
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