Asian Journal of Chemical Sciences

Aim and Objectives: Nowadays, nanomaterials technology is developing very quickly and bringing high economic efficiency for many industries including paint. The purpose of this study is to assess the effect of paint properties when replacing TiO₂ powder coating with nano TiO₂ at different ratios.

Materials and Methods: The research method is selecting the traditional alkyd paint formula, then replacing this coating powder TiO₂ with nano TiO₂ to monitor the properties of the paint film over time. Methods of analyzing the properties of the paint film are based on Vietnam standards.

Results: The study results showed that TiO₂ coating powder replaced by TiO₂ nanomaterials has increased the properties of the paint film, improving the thickness, gloss, and durability of the paint film. Nano TiO₂ increases from 0.5% to 24% by weight, the impact increased by about 11% (73 to 82 kg.cm), Glossy 60° increased by about 12%, Glossy 85° increased by about 12%, especially the durability of paint film over time increased nearly double. Nano TiO₂ is a more expensive material than TiO₂, so it should replace less than 4% by weight to increase the quality of the paint film, this ratio is changed according to the actual equipment requirements.

Conclusions: The higher the rate of replacing TiO₂ materials with TiO₂ nano, the better the properties of the paint film. Therefore, nano-material TiO₂ is a good coating in alkyd resin for metal paint, it improves the properties of paint film better than TiO₂ material.