Adhering coating process of photocatalyst and fixed bed base material
A photocatalyst and coating process technology, applied in coatings, devices for coating liquids on surfaces, pretreatment surfaces, etc. Surface area, large catalytic oxidation contact surface, and the effect of ensuring effective porosity
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Embodiment 1
[0033] A kind of adhesive coating process of photocatalyst and fixed bed base material, the step of adhesive coating process is as follows:
[0034] S1: Fully coat the fixed bed substrate with the water-based adhesive, take it out and let it dry naturally in a dust-free environment;
[0035] S2: The fixed bed base material after step S1 is air-dried is coated with photocatalyst; The fixed bed base material adopts three-dimensional structural nickel foam;
[0036] S3: After the photocatalyst coating process is completed, dry in a medium temperature oven at 250-300°C for 1.5h;
[0037] S4, repeat steps S2 and S31 times.
[0038] Specifically, the conditions of the dust-free environment in step S1 are: ambient temperature ≤ 22°C, ambient humidity ≤ RH55%, the coating amount is 0.2g / cm2, and the water-based adhesive is processed from the following raw materials in mass percentage: 28% ethyl orthosilicate, 21% dehydrated alcohol, 1% hydrochloric acid, the balance is deionized wat...
Embodiment 2
[0053] A kind of adhesive coating process of photocatalyst and fixed bed base material, the step of adhesive coating process is as follows:
[0054] S1: Fully soak the fixed bed substrate in the water-based adhesive, take it out and let it dry naturally in a dust-free environment;
[0055] S2: soak the photocatalyst in the fixed bed substrate after step S1 is air-dried; the fixed bed substrate is made of aluminum foam:
[0056] S3: After the process of coating or immersing the photocatalyst is completed, dry it in a medium temperature oven at 550-600°C for 1 hour:
[0057] S4, repeat steps S2 and S302 times.
[0058] Specifically, the conditions of the dust-free environment in step S1 are: ambient temperature ≤ 22°C, ambient humidity ≤ RH55%, step S1 uses soaking, soaking time is 20S, and the water-based adhesive is processed from the following raw materials in mass percentage Component: 38% tetraethyl orthosilicate, 31% dehydrated alcohol, 2% hydrochloric acid, the balance is...
Embodiment 3
[0073] A kind of adhesive coating process of photocatalyst and fixed bed base material, the step of adhesive coating process is as follows:
[0074] S1: Fully soak the fixed bed substrate in the water-based adhesive, take it out and let it dry naturally in a dust-free environment;
[0075] S2: soak the photocatalyst in the fixed bed base material after the air-drying in step S1; the fixed bed base material is a porous ceramic material;
[0076] S3: After the process of immersing the photocatalyst is completed, dry it in a medium-temperature oven at 400-450°C for 1.2 hours;
[0077] S4, repeat steps S2 and S32 times.
[0078] Specifically, the conditions of a dust-free environment in step S1 are: ambient temperature ≤ 22°C, ambient humidity ≤ RH55%, step S1 uses soaking, soaking time is 30S, and the composition of the water-based adhesive is: 33% orthosilicone Acetate ethyl ester, 26% absolute ethanol, 1.5% hydrochloric acid, the balance is deionized water, the sum of raw mat...
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