A method for enhancing the whiteness and brightness of rutile titanium dioxide
A rutile type, white powder original technology, applied in the direction of fibrous filler, dyed low molecular organic compound treatment, etc., can solve the problem of not being able to improve the whiteness and brightness of rutile titanium dioxide at the same time, to improve the whiteness and brightness, operation simple effect
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Embodiment 1
[0018] Weigh 100g of anhydrous ethanol aqueous solution, wherein the masses of anhydrous ethanol and water are 99g and 1g respectively, put it in a 500mL beaker, and then add 100g of industrial grade rutile titanium dioxide to the beaker, ultrasonically disperse it for 1h, then pour it into Put it in a 250ml round bottom flask equipped with a stirrer and put it in a constant temperature water bath at 60°C, then weigh 0.1g of dodecylamine and 0.5g of isopropyl titanate into the flask and start stirring, timing. After reacting for 4 hours, the water bath was lowered to room temperature, the reaction mixture was filtered and washed with ethanol three times, and the product was dried at 100°C for 8 hours to obtain the treated rutile titanium dioxide. Samples were taken for optical analysis. Among them, the performance test of the product pigment was carried out using a CM-2500d spectrometer (Minolta Co. Ltd., XL-30, and D65illuminant).
Embodiment 2
[0020] Weigh 100g of anhydrous ethanol aqueous solution, wherein the masses of anhydrous ethanol and water are 99g and 1g respectively, put it in a 500mL beaker, and then add 100g of industrial grade rutile titanium dioxide to the beaker, ultrasonically disperse it for 1h, then pour it into Put it in a 250ml round bottom flask equipped with a stirrer and place it in a constant temperature water bath at 60°C, then weigh 0.2g of dodecylamine and 0.7g of isopropyl titanate into the flask, start stirring, and time. After reacting for 4 hours, the water bath was lowered to room temperature, the reaction mixture was filtered and washed with ethanol three times, and the product was dried at 100°C for 8 hours to obtain the treated rutile titanium dioxide. Samples were taken for optical analysis. Among them, the performance test of the product pigment was carried out using a CM-2500d spectrometer (Minolta Co. Ltd., XL-30, and D65illuminant).
Embodiment 3
[0022] Weigh 100g of anhydrous ethanol aqueous solution, wherein the masses of anhydrous ethanol and water are 98g and 2g respectively, put it in a 500mL beaker, and then add 100g of industrial grade rutile titanium dioxide to the beaker, ultrasonically disperse it for 1h, then pour it into Put it in a 250ml round bottom flask equipped with a stirrer and place it in a constant temperature water bath at 30°C, then weigh 0.3g of dodecylamine and 1g of isopropyl titanate into the flask and start stirring, timing. After reacting for 4 hours, the water bath was lowered to room temperature, the reaction mixture was filtered and washed with ethanol three times, and the product was dried at 100°C for 8 hours to obtain the treated rutile titanium dioxide. Samples were taken for optical analysis. Among them, the performance test of the product pigment was carried out using a CM-2500d spectrometer (Minolta Co. Ltd., XL-30, and D65illuminant).
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