A method of preparing photocatalytic sheet using 3D molding technology
A photocatalytic and technical technology, which is applied in the field of photocatalytic sheet preparation using 3D molding technology, can solve the problems of complex preparation process and high cost, and achieve the effect of simple preparation process, controllable shape and high catalytic efficiency
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Embodiment 1
[0029] Cryogenic crushing of nylon polymer pellets, classification by vibrating sieve (powder particle size: 50 μm), selection of nylon polymer powders with different particle sizes, adding 2% antioxidant, mixing evenly, and crystallization treatment. The crystallization treatment process is to keep warm for 6 hours under the protection of an atmosphere at 80°C, and then cool with the furnace. The obtained nylon polymer powder was dispersed in a sulfuric acid solution and stirred for 5 hours at a concentration of 50 g / L. After etching, it was washed with water until it was neutrally dried. The etched nylon polymer powder was deposited on the surface of the photocatalytic medium TiO by co-precipitation method. 2 , dried under the protection of atmosphere at 200°C, add 0.5% zinc stearate glidant and mix well. The homogeneously mixed polymer powder was prepared by a selective laser sintering process with a photocatalytic function. The laser power was 30W and the sintering temper...
Embodiment 2
[0032]The polypropylene polymer pellets are cryogenically crushed and subjected to cyclone classification treatment (the particle size of the powder is 80 μm), and polypropylene polymer powders of different particle sizes are selected, mixed with 0.5% antioxidant, and crystallized. The crystallization treatment process is to keep warm for 1 hour under the protection of atmosphere at 200°C, and then cool with the furnace. Disperse the obtained polypropylene polymer powder in hydrochloric acid solution and stir for 0.1 hour, the concentration is 200g / L, after etching, wash with water until neutral drying. Deposit the photocatalytic medium ZnO on the surface of the etched polypropylene polymer powder by co-precipitation method, dry it under the protection of atmosphere at 80°C, add 1.5% magnesium stearate flow aid and mix well. The homogeneously mixed polypropylene polymer powder was prepared into a sheet with photocatalytic function by a selective laser sintering process. The la...
Embodiment 3
[0035] The polyethylene polymer pellets were cryogenically crushed and subjected to vibrating sieve classification (the particle size of the powder was 60 μm), and nylon polymer powders of different particle sizes were selected, mixed with 1.8% antioxidant, and crystallized. The crystallization treatment process is to keep the temperature for 4.5 hours under the protection of an atmosphere at 100°C, and then cool with the furnace. Disperse the obtained polyethylene polymer powder in nitric acid solution and stir for 4 hours, the concentration is 80g / L, after etching, wash with water until neutral drying. The photocatalytic medium SnO was deposited on the surface of the etched polyethylene polymer powder by co-precipitation method. 2 , dried under the protection of atmosphere at 180 ℃, add 0.7% magnesia flow aid and mix well. The homogeneously mixed polymer powder was prepared into a sheet with photocatalytic function by selective laser sintering process, the laser power was 2...
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