Preparation method for hydrophobic coating and product and application thereof
A technology of hydrophobic coating and deionized water, applied in the direction of coating, can solve problems such as poor hydrophobic performance, and achieve the effects of simple preparation method, great application prospect and strong controllability
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Embodiment 1
[0018] A kind of hydrophobic coating is prepared according to the following method:
[0019] Accurately weigh high-purity zinc powder and deionized water (the mass ratio of zinc powder and deionized water is 1: 100), add high-purity zinc powder into deionized water, stir, and age for 12 hours, and dry to obtain the surface Zinc powder with a certain thickness of oxide film. Put it into a porcelain boat and put it into a high-temperature furnace, heat it to 900°C and keep it for 60 minutes, and the white powder obtained is four-needle zinc oxide.
[0020] Add tetrapod zinc oxide to silicone resin (the mass ratio of tetrapod zinc oxide to silicone resin is 1:100), and add various additives (the additives are defoamers and dispersants) , and stir it evenly to obtain a hydrophobic coating.
Embodiment 2
[0022] A kind of hydrophobic coating is prepared according to the following method:
[0023] Accurately weigh high-purity zinc powder and deionized water (the mass ratio of zinc powder and deionized water is 1: 500), add high-purity zinc powder into deionized water, stir, and age for 6 hours, and dry to obtain the surface Zinc powder with a certain thickness of oxide film. Put it into a porcelain boat and put it into a high-temperature furnace, heat it to 950°C and keep it for 45 minutes, and the obtained white powder is four-needle zinc oxide.
[0024] Add tetrapod zinc oxide to silicone resin (the mass ratio of tetrapod zinc oxide to silicone resin is 1:50), and add various additives (auxiliaries include leveling agent, drier and film-forming aids), and stir it evenly to obtain a hydrophobic coating.
Embodiment 3
[0026] A kind of hydrophobic coating is prepared according to the following method:
[0027] Accurately weigh high-purity zinc powder and deionized water (the mass ratio of zinc powder and deionized water is 1: 200), add high-purity zinc powder into deionized water, stir, and age for 4 hours, and dry to obtain the surface Zinc powder with a certain thickness of oxide film. Put it into a porcelain boat and put it into a high-temperature furnace, heat it to 1000°C, and keep it for 30 minutes. The white powder obtained is four-needle zinc oxide.
[0028] Add tetrapod zinc oxide to silicone resin (the mass ratio of tetrapod zinc oxide to silicone resin is 1:20), and add various additives (the additives include defoaming agent, leveling agent and dispersant), and stir it evenly to obtain a hydrophobic coating.
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