Application of hydrophobic material on surface of propeller
A hydrophobic, propeller technology, applied in the application field of hydrophobic materials on the surface of the propeller, can solve the problems of increasing the sailing resistance and fuel consumption of ships, impairing the propulsion performance of the propeller, reducing the output efficiency of the propeller, etc. Self-cleaning ability, the effect of solving contact corrosion
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Embodiment 1
[0017] Preparation of the hydrophobic material used in this example: 75g of propyltrimethoxysilane, 2.5g of silica nanoparticles and 10g of PDMS were dissolved in 200mL of p-xylene solution and heated to 60°C for 3 hours, then 20g of polypropylene was added And 1.5g glycidyl etheroxypropyl trimethoxysilane to obtain superhydrophobic polypropylene nanocomposite material.
Embodiment 2
[0019] Preparation of the hydrophobic material used in this example: Dissolve 10 g of ZnO nanoparticles in 50 g of absolute ethanol, and perform ultrasonic dispersion at room temperature. Completely volatilize, dissolve the particles after the complete ethanol volatilization in 5g toluene solution, then pour in the sealed four-necked flask that fills 60g hydrogen-containing polysiloxane (PDHS), DBTDL catalyst and silane coupling agent, heat up to 40 After being stirred at -45°C for 3 hours, it becomes uniform and translucent, and is distilled under reduced pressure to obtain a ZnO-PDHS grafted polymer. Pour 30g of polydimethylsiloxane, 0.5g of silane coupling agent and 0.1g of platinum catalyst into a closed four-neck flask filled with nitrogen; then, add 15g of ZnO-PDHS graft polymer and 10g of methyl vinyl MQ silicone resin, and adding 0.5g of simethicone to adjust the viscosity to obtain a superhydrophobic film material.
Embodiment 3
[0021] Preparation of the hydrophobic material used in this example: AA6061 aluminum alloy (mass fraction percentage of chemical composition: Cu 0.15~0.4, Mn 0.15, Mg 0.8~1.2, Zn 0.25, Cr 0.04~0.35, Ti 0.15, Si 0.4~ 0.8, Fe 0.7, Al balance) After the substrate is polished smooth, it is ultrasonically cleaned with deionized water and ethanol for 5 minutes, and then placed in a desiccator for later use; then, a 6% HCl aqueous solution and 40% FeCl 3 Aqueous solution, mixed at a volume ratio of 2:1; the treated aluminum alloy substrate was placed in HCl and FeCl 3 Ultrasonic etching in the mixed solution for 6 minutes, then take it out and ultrasonically clean it with deionized water for 5 minutes, and then put in 0.1mol / L KMnO 4 React in the solution for 1 hour, and finally put 1H, 1H, 2H, 2H-perfluorodecyltrichlorosilane in an ethanol solution with a molar volume of 0.02mol / L, sonicate for 1 hour and stand for 10 hours, and finally cure for 2 hours to obtain a hydrophobic sex ...
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