International. Researchers at Qingdao Binhai University in China studied TiO2 particles prepared by the sol-gel method with different diameters, finding that these can improve the self-cleaning and anti-corrosion properties of acrylic resin.
First, micro-nano-sized spherical TiO2 particles were prepared using the inclusion reaction product that resulted from the chemical reaction between urea and EtOH, and which served as a template. Then, the spherical particles of titanium dioxide were used to improve the properties of the acrylic resin. The microstructure of the resulting coating, with the increase of the particles, took the irregular shape of the lotus leaf.
When the addition of TiO2 reaches 30% of the weight, it can improve the anticorrosive properties of brushed acrylic resin coating on Q235 steel plates, the contact angle of water on the surface of the coating is 121.5°, and it shows good self-cleaning properties in water with sand.
The size of spherical titanium dioxide can be regulated by the proportion of urea solution. Spherical particles are mainly composed of anatase. Composite coatings showed the highest rating of 5B determined by the American Society for Testing and Materials' ASTM D-3359-02 adhesion test.
Source: Science Direct.
Leave your comment