A kind of silicon-containing corrosion inhibitor composition and preparation method thereof
A corrosion inhibitor and composition technology, applied in the field of corrosion protection, can solve problems such as unstable film formation and weak temperature adaptability, and achieve the effects of improving electron donating ability, strong hydrophobicity, and improving stability
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Embodiment 1
[0029] Take 10g of methylphenyl hydrogen-containing polysiloxane with an average molecular weight of 2000 (0.5wt% active hydrogen content, 1.5~2.5wt% phenyl content), 0.7g of 2-mercaptobenzothiazole and 0.4g of hydroxybenzothiazole g, into a round-bottomed flask filled with 350mL of n-heptane, stirring continuously while raising the temperature to 75±5°C in a constant temperature water bath, then add about 10 drops of 0.05mol / L isopropanol solution of chloroplatinic acid with a dropper, The reaction process was carried out under the protection of nitrogen for 5 hours, and the reaction mixture was distilled under reduced pressure to remove the solvent n-heptane to obtain a thiazole-containing siloxane polymer. The content of residual active hydrogen in the target product was determined by NMR internal standard method to be about 0.01%wt., and the product was qualified. Next, add the product obtained in the previous step into 400 mL of toluene, then add monophenylenedioctyl phos...
Embodiment 2
[0031] Take 10g of methylphenyl hydrogen-containing polysiloxane with an average molecular weight of 2000 (active hydrogen content of 0.3wt%, phenyl content of 2~2.5wt%), 0.7g of 2-mercaptobenzothiazole and 0.4g of hydroxybenzothiazole g, add to a round bottom flask with 350mL of n-heptane, stir continuously while raising the temperature to 75±5°C in a constant temperature water bath, then add about 15 drops of 0.05mol / L isopropanol solution of chloroplatinic acid with a dropper, The reaction process was carried out under the protection of nitrogen for 6 hours, and the reaction mixture was distilled under reduced pressure to remove the solvent n-heptane to obtain a thiazole-containing siloxane polymer. The content of residual active hydrogen in the target product is determined to be about 0.01%wt. by NMR internal standard method, and the product is qualified. Next, add the product obtained in the previous step into 350 mL of toluene, then add trioctyl phosphite, and stir at 70...
Embodiment 3
[0033]Take 10g of methylphenyl hydrogen-containing polysiloxane with an average molecular weight of 1500 (active hydrogen content of 0.5wt%, phenyl content of 1.5~2.5wt%), 0.75g of 2-mercaptobenzothiazole and 0.5g of hydroxybenzothiazole g, into a round-bottomed flask filled with 350mL of n-heptane, stirring continuously while raising the temperature to 70±5°C in a constant temperature water bath, then add about 10 drops of 0.05mol / L chloroplatinic acid isopropanol solution with a dropper, The reaction process was carried out under the protection of nitrogen for 5 hours, and the reaction mixture was distilled under reduced pressure to remove the solvent n-heptane to obtain a thiazole-containing siloxane polymer. The content of residual active hydrogen in the target product is determined to be about 0.01%wt. by NMR internal standard method, and the product is qualified. Next, add the product obtained in the previous step into 400 mL of toluene, then add monophenylenedioctyl pho...
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