Processing technology of a slow-release long-lasting super-hydrophobic antifouling flashover coating
An anti-pollution flashover coating and processing technology, applied in the coating and other directions, can solve the problems of low elongation, breaking strength and tear strength, easy aging service life, poor corrosion resistance, etc., and achieve salt spray aging resistance. Good performance, excellent stain resistance, and the effect of improving mechanical properties
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Embodiment 1
[0052] A processing technology of slow-release long-acting super-hydrophobic antifouling flashover coating, comprising the following steps:
[0053] ①Stir 100kg of trifluoropropylmethylcyclotrisiloxane, 25kg of tetramethyldisiloxane and 250kg of methylcyclosiloxane evenly, add 12.5kg of sodium sulfate, heat up to 60°C after stirring evenly, and then add Add 5kg of concentrated hydrochloric acid with a concentration of 37% dropwise, react for 1 hour after the dropwise addition, cool to 20°C, add ammonia water, adjust the pH to 6, and obtain hydrogen-terminated fluoropolysiloxane;
[0054] ②Take 80kg of hydrogen-terminated fluoropolysiloxane obtained in step ① and 10kg of methallyl alcohol, stir evenly, add 0.2kg of metal nickel, raise the temperature to 80°C, and react for 1 hour to obtain hydroxypropyl-terminated fluoropolysiloxane Oxygen;
[0055] ③Raise the temperature to 40kg of octamethylcyclotetrasiloxane to 50°C, add 0.1kg of concentrated sulfuric acid and stir evenly, ...
Embodiment 2
[0060] A processing technology of slow-release long-acting super-hydrophobic antifouling flashover coating, comprising the following steps:
[0061] ①Stir 60kg of trifluoropropylmethylcyclotrisiloxane, 10kg of tetramethyldisiloxane and 150kg of methylcyclosiloxane evenly, add 10kg of sodium sulfate, heat up to 70°C after stirring evenly, and then add Add 5kg of concentrated hydrochloric acid with a concentration of 37% dropwise, react for 2 hours after the dropwise addition, cool to 30°C, add ammonia water, adjust the pH to 7, and obtain hydrogen-terminated fluoropolysiloxane;
[0062] ②Take 45kg of hydrogen-terminated fluoropolysiloxane and 7.5kg of methallyl alcohol obtained in step ①, stir evenly, add 0.25kg of metal nickel, heat up to 90°C, and react for 2 hours to obtain hydroxypropyl-terminated fluoropolysiloxane Silicone;
[0063] ③Raise the temperature to 42.5kg octamethylcyclotetrasiloxane to 60°C, add 0.25kg concentrated sulfuric acid to it and stir evenly, then add...
Embodiment 3
[0068] A processing technology of slow-release long-acting super-hydrophobic antifouling flashover coating, comprising the following steps:
[0069] ①Stir 45kg of trifluoropropylmethylcyclotrisiloxane, 10kg of tetramethyldisiloxane and 120kg of methylcyclosiloxane evenly, add 8kg of sodium sulfate, heat up to 62°C after stirring evenly, and then add Add 3kg of concentrated hydrochloric acid with a concentration of 37% dropwise, react for 1.5 hours after the dropwise addition, cool to 22°C, add ammonia water, adjust the pH to 6.5, and obtain hydrogen-terminated fluoropolysiloxane;
[0070] ②Take 41kg of hydrogen-terminated fluoropolysiloxane obtained in step ① and 7kg of methallyl alcohol, stir evenly, add 0.15kg of metal nickel, heat up to 84°C, and react for 1.5 hours to obtain hydroxypropyl-terminated fluoropolysiloxane Oxygen;
[0071] ③Raise the temperature to 41kg of octamethylcyclotetrasiloxane to 52°C, add 0.15kg of concentrated sulfuric acid to it and stir evenly, the...
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