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Nano-titanium Dioxide for Coatings and Paints

1. Production method of nano-titanium dioxide for interior wall coating


Add 1-3% of the emulsion weight of nano-titanium dioxide VK-T06 to the color paste raw material, stir at high speed for 1 hour, and then enter the sand mill to sand for 1-3 hours to make the color paste. Then add the color paste into the paint tank, add the emulsion, and stir to make the interior wall latex paint.


2. Performance test of nano-titanium dioxide for exterior wall coatings


Nano-titanium dioxide VK-T06 is mixed with other raw materials and sanded according to the ratio of 1-3% by weight of the emulsion to prepare a pigment. Then, fully mix the pigment and the emulsion in an emulsifier, and mix the paint to prepare the exterior wall paint. The performance test of the finished coating is as follows:


Nano-titanium dioxide VK-T06 is mixed with other raw materials and sanded according to the ratio of 1-3% by weight of the emulsion to prepare a pigment. Then, the pigment and the emulsion are fully mixed in an emulsifier, and the paint is mixed to prepare the exterior wall paint. The performance test of the finished coating is as follows:


(1) Use an electric paint film adhesion tester to measure the adhesion of the paint: Nano-titanium dioxide has a great influence on the adhesion of the paint. Nano-titanium dioxide is an important raw material for coating film formation because it has excess surface free energy and good dispersibility, so that when it forms a film, the bonding force between the substrate and the substrate is firm and uniform.


(2) Use putty flexibility tester to measure the flexibility of the coating: when 3% of nano-titanium dioxide VK-T06 is added, the coating has the best flexibility. After the surface treatment of nano-titanium dioxide VK-T06, a flexible interface layer with good interfacial adhesion is formed between the surface and the substrate, which gives the substrate flexibility and stress transfer functions, thereby improving the flexibility of the coating.


(3) Using paint film impactor to measure the impact resistance of the coating: Nano-titanium dioxide can improve the impact resistance of the coating up to 60khNaN. The surface-treated nano-titanium dioxide VK-T06 reduces the agglomeration phenomenon, is conducive to interfacial adhesion, and can improve the strength of the polymer coating.


(4) The anti-aging performance of the coating is determined by using non-metallic materials and an aging test instrument. Conditions: aging time 2000h, aging light temperature 60℃. The anti-aging performance of nano titanium dioxide has been greatly improved. Adding 1-3% of nano-titanium dioxide VK-T06 can significantly improve the performance of interior and exterior wall coatings.

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