- Fabricate a protective coating based on acrylic-polyurethane resins and ZnO-Ag nanoparticles with good mechanical properties and high self-cleaning ability (ACPU nanocomposite coating)
- Fabricate a protective metal coating using the sol-gel method containing SiO2, TiO2, and graphene, exhibiting good mechanical properties and corrosion protection of metals (sol-gel coating).

- For ACPU nanocomposite coating, SEM/TEM analysis revealed that nano-ZnO and nano-Ag particles were hybridized, with nano-Ag particles (10-30 nm in size) attached to the surface of rod-shaped nano-ZnO particles (width: 30-70 nm, length: 100-200 nm). These ZnO-Ag was well dispersed in the polymer coating matrix at a content of ≤ 2%. When the content of ZnO-Ag was > 2%, agglomeration of ZnO-Ag particles was observed, reducing the mechanical properties of the coating. Mechanical tests showed that when the content of ZnO-Ag was ≤ 2%, the adhesion and relative hardness of the coatings did not change compared to the ACPU coating without nanoparticles. However, the presence of hybrid nanoparticles in coating matrix enhanced the mechanical properties, increasing with the nanoparticle content. When the content of ZnO-Ag increased from 0 to 2% by weight, both the impact strength and abrasion resistance increased proportionally with the ZnO-Ag content, increasing from 174 kg.cm and 132.7 L/mil to 187 kg.cm and 154.6 L/mil, respectively. Data on the reflectance coefficient for the SHR heat-resistant coating system with the artificial contamination showed that after UV irradiation, the topcoat recovered its reflectance coefficient more strongly, reflecting the self-cleaning ability of the ACPU/ZnO-Ag coating. 
-For sol-gel coating, SEM analysis revealed that graphene as corrosion inhibitor has been successfully incorporated into the sol-gel coating matrix, with a content of 0.1~0.5 wt.%. Mechanical tests showed that the sol-gel coatings with a graphene content of 0.5 wt.% provided the highest values of adhesion (1.48 MPa), scratch resistance (850 N), and abrasion resistance (812 L./mil.). EIS data showed that higher graphene content increased both R1 (coating) and R2 (coating/Al interface) resistances. Besides, enhancing the barrier protection mechanism of the coating (graphene acting as a nano-filler/nano-reinforcement), another mechanism attributed to the corrosion inhibition role of graphene in improving corrosion resistance at the aluminum alloy-coating interface.
- It improved the level of the research team.
- It has strengthened the scientific research and training ooperation between the Institute for Tropical Technology and the research and training facilities at the Francisk Skorina Gomel State University, Belarus

A topcoat was successfully fabricated using a solvent-based dispersion of acrylic polyurethane resin and ZnO-Ag hybrid nanoparticles. The resulting polymer nanocomposite coating (ACPU/ZnO-Ag) exhibited good mechanical properties and self-cleaning capability via a photocatalytic mechanism.
A sol-gel primer coating containing TiO2, SiO2, and graphene was successfully fabricated, providing corrosion protection for metals (aluminum and alloys) in corrosive environments.

- Kovalenko, D.L., Uong Van, V., Mac, V.P., Nguyen, T.V., Pham Thi, L., Nguyen*, T.A., Gaishun, V.E., Vaskevich, V.V. and Tran, D.L. (2024), "Effect of graphene on mechanical and anti-corrosion properties of TiO2-SiO2 sol-gel coating", Anti-Corrosion Methods and Materials, Vol. 71 No. 6, pp. 820-830. https://doi.org/10.1108/ACMM-05-2024-3023
- Other products: 01 Master thesis

The two-coat paint system, based on the sol-gel primer and the polymer nanocomposite topcoat, holds great promise for applications as a corrosion-resistant and self-cleaning coating in the automotive, motorcycle, aerospace, and space industries.
Through the project, the Vietnamese research team has cooperated with the Francisk Skorina Gomel State University, and improved their qualifications in researching and manufacturing the advanced coatings for protection of materials. We respectfully hope that the Vietnam Academy of Science and Technology will accept the project and support it so that cooperation can continue to develop.