Novel corrosion inhibitor composition and preparation method thereof
A technology of corrosion inhibitor and composition, applied in the field of novel corrosion inhibitor composition and its preparation, corrosion inhibitor composition and its preparation field, can solve the problems of weak temperature adaptability, unstable film formation on the surface of metal internal parts, etc. , to achieve the effect of wide application range, long continuous corrosion resistance period and reducing corrosion rate
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Embodiment 1
[0021] Take 20g of hydrogen-containing polydimethylsiloxane (active hydrogen content is about 0.5wt%) with an average molecular weight of about 1000, put it into a round bottom flask filled with 400mL of toluene, stir continuously and raise the temperature to 75 in a constant temperature water bath. ±5°C, and flow nitrogen gas. After the dispersion is uniform, continue to heat up to 100±5°C. After the temperature is stable for 5 minutes, gradually add 1.5g of 4-hydroxybenzotriazole, and then drop about 3.5g of 0.1mol / L sodium hydroxide solution, fully reacted for 5 hours, the reaction mixture was distilled off under reduced pressure to remove the solvent, and then filtered to remove the insoluble matter to obtain the target product corrosion inhibitor composition. The content of residual active hydrogen in the target product is determined by nuclear magnetic resonance internal standard method to be less than 0.02%wt., and the product is qualified. Take hydrotreated kerosene a...
Embodiment 2
[0023] Take 20g of hydrogen-containing polydimethylsiloxane (active hydrogen content is about 0.5wt%) with an average molecular weight of about 750, add it to a round bottom flask filled with 400mL of toluene, and heat up to 75 in a constant temperature water bath while stirring continuously. ±5°C, and flow nitrogen gas. After the dispersion is uniform, continue to heat up to 100±5°C. After the temperature is stable for 5 minutes, gradually add 1.0g of 4-hydroxybenzotriazole, and then drop about 3.5g of 0.1mol / L sodium hydroxide solution, fully reacted for 5 hours, the reaction mixture was distilled off under reduced pressure to remove the solvent, and then filtered to remove the insoluble matter to obtain the target product corrosion inhibitor composition. The content of residual active hydrogen in the target product is determined by nuclear magnetic resonance internal standard method to be less than 0.02%wt., and the product is qualified. Take hydrotreated kerosene as a sol...
Embodiment 3
[0025] Take 15g of hydrogen-containing polydimethylsiloxane (active hydrogen content is about 0.5wt%) with an average molecular weight of about 750, add it to a round-bottomed flask filled with 400mL of toluene, and heat it up to 75 in a constant temperature water bath while stirring continuously. ±5°C, and flow nitrogen gas. After the dispersion is uniform, continue to heat up to 100±5°C. After the temperature is stable for 5 minutes, gradually add 1.5g of 4-hydroxybenzotriazole, and then drop about 5.0g of 0.1mol / L of sodium hydroxide solution, fully reacted for 8 hours, the reaction mixture was distilled off under reduced pressure to remove the solvent, and then filtered to remove insoluble matter to obtain the target product corrosion inhibitor composition. The content of residual active hydrogen in the target product is determined by nuclear magnetic resonance internal standard method to be less than 0.02%wt., and the product is qualified. Take hydrotreated kerosene as a...
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