Project's information
| Project's title | Research and development of advanced materials and coating technology for civil and defense applications |
| Project’s code | TĐVLTT.04/21-23 |
| Research hosting institution | Institute for Tropical Technology |
| Project leader’s name | Dr. Pham Gia Vu |
| Project duration | 01/01/2021 - 30/06/2024 |
| Project’s budget | 7,500 million VND |
| Classify | Grade B |
| Goal and objectives of the project | - Manufacturing a paint system with long-lasting corrosion resistance and weather resistance to protect carbon steel structures working in marine atmospheric environments. |
| Main results | Regarding science: Research has been conducted to select several types of nano produced by I component, commercial nano, and self-synthesized nano to transform to form 08 nanocomposite assemblies to study their reinforcing role to epoxy and polyurethane resins. With a small concentration (depending on the nano mixture) in the range of 0.1-3% by weight, nano has shown a shielding or inhibitory effect against corrosion, increasing adhesion and preventing cathodic peeling for epoxy coatings and increasing UV, heat, and moisture resistance for polyurethane coatings. Researched and manufactured various primers and topcoats based on choosing the optimal ratio of 08 nano additives with other inorganic fillers and compared and evaluated the above 04 organic coating systems. Based on the research, primer coatings and paint coatings have superior physical and mechanical properties, anti-corrosion protection, UV weather resistance, and cathodic peeling resistance compared to comparable paints, according to international standards. (ASTM-B117, ISO 12944, ASTM-G8-96 and ISO 20340…). Selected to build 04 processes for manufacturing 02 types of primer coatings, 02 types of paint coatings that are resistant to cathodic peeling and marine atmosphere, and at the same time researched and promulgated 04 basic standards for the above paints based on based on international standards. Registered 01 intellectual property on synthesizing nanoparticles based on CePO4 and manufacturing anti-corrosion and cathodic peeling protective paint. About the application: Conducted natural test painting of samples and on steel structure works working in marine environment and marine atmosphere. The exposed surface area is about 120m2 of iron and steel components of the test buoy of the Joint Vietnam-Russia Tropical Science and Technology Research Center in the Hon Tre island area - Nha Trang (Khanh Hoa). These buoys work in seawater splashing conditions and are subject to harsh climates, with cathodic protection. After 09 month of natural exposed, the protective coatings still work well, do not show any trace of corrosion, damage. The second test was about 200 m2 of steel structures for 08 microwave antenna towers working in marine climate conditions on Truong Sa island. The coating layers of these projects have so far been evaluated well by the coordinating unit. The coating layers of these projects have so far been evaluated well by the coordinating unit. |
| Novelty and actuality and scientific meaningfulness of the results | The component has used nano-research additives to create an anti-corrosion protective paint that can withstand peeling under cathodic protection current and has been used to protect against corrosion for works and iron and steel structures in marine or underground environments by international standards. Through the process of implementing project, the researchers, graduate students, and Ph.D. students have also grasped nano paint manufacturing technologies; and; applied and evaluated paints in the field of combined anti-corrosion. Cathodic protection has been a new field in Vietnam, thereby helping to supplement human resources in this field. |
| Products of the project | (a) Scientific papers in referred journals (list): ISI/Scopus International Publications 1. Thu Thuy Pham, Thuy Duong Nguyen, Anh Son Nguyen, Thi Thao Nguyen, Maurice Gonon, Alice Belfiore, Yoann Paint, Thi Xuan Hang To, Marie-Georges Olivier, “Role of Al and Mg alloying elements on corrosion behavior of zinc alloy-coated steel substrates in 0.1M NaCl solution”, Materials and Corrosion 2023, 1-17. 2. Thu Thuy Pham, Thuy Duong Nguyen, Anh Son Nguyen, Maurice Gonon, Alice Belfiore, Yoann Paint, Thi Xuan Hang To, Marie-Georges Olivier, “Influence of solution pH on the structure formation and protection properties of ZnAlCe hydrotalcites layers on hot-dip galvanized steel”, Surface & Coatings Technology 472 (2023) 129918. 3. Thuy Duong Nguyen, Thu Thuy Pham, Anh Son Nguyen, Ke Oanh Vu, Gia Vu Pham, To Thi Xuan Hang, “Inhibitory effect of benzoate-intercalated hydrotalcite with Ce3+-loaded clay on carbon steel”, Corrosion Science and Technology, 22 (1) 2023, 1-9. 4. Thu Thuy Thai, Dieu Thao Nguyen, Thi Thao Nguyen, Gia Vu Pham, Hoan Nguyen Xuan, Anh Truc Trinh, “Reinforcement of magnetite-montmorillonite on the cathodic delamination of epoxy-based organic coating”, Vietnam Journal of Science and Technology, 2023 Accepted. Publication in National Journal 1. Thuy Duong Nguyen, Thu Thuy Pham, Ke Oanh Vu, Thi Xuan Hang To, Trinh Lan Phuong, Xuan Thang Dam, Minh Quy Bui, Anh Son Nguyen, “Evaluation of the hydrophobic and barrier properties of the polyurethane coatings covered by stearic acid thin layer”, Communications in Physics, 33 (4) (2023) 447-455. 2. Pham Duc Linh, Trinh Anh Truc, Thai Thu Thuy, Vu Ke Oanh Nguyen Thuy Dương, Pham Thu Thuy, Dam Xuan Thang, Pham Gia Vu “Relationship between corrosion protection and cathodic disbondment resistance of the epoxy-zinc phosphate coating”, Journal of Materials and Construction13 (3) 2023, 33-38. 3. Pham Gia Vu, Vu Ke Oanh, Thai Thu Thuy, Nguyen Thi Thao, Pham Duc Linh, Dam Xuan Thang, Pham Gia Khanh, “Research on polyurethane coating containing nano graphene corrosion resistance for carbon steel”, Journal of Science and Technology - Hanoi University of Industry, 2023. (b) Products at ITT (VAST): + 30 kg anticorrosion modified-nanoclay- based epoxy primer applied for carbon steel structures working in marine environments (no cathodic protection). + 30 kg anticorrosion modified-nano metal oxide- based epoxy primer applied for carbon steel structures working under sea water of soil. (included/non included cathodic protection) + 20 kg UV weather resistance modified-GO- based PU coating for carbon steel structures working in marine environments. + 20 kg UV weather resistance modified-nano metal oxide- based PU coating for carbon steel structures working in marine environments and under seawater. + 200 m2 painted structure working in marine environment and marine atmosphere with cathodic protection. + 10m2 natural test painting of 03 samples immersed in marine environment coupled cathodic protection. + 01 processes for manufacturing anticorrosion modified-nanoclay- based epoxy primer. + 01 processes for manufacturing anticorrosion modified-nano metal oxide- based epoxy primer. + 01 processes for manufacturing UV weather resistance modified-GO- based PU coating. + 01 processes for manufacturing UV weather resistance modified -nano metal oxide- based PU coating. + 04 basic standards for manufacturing primer coatings and top-coat. - Other products (if applicable): + 01 patent paper has been accepted: “Preparation method for cerium photphate -containing epoxy coating availaible for cathodic protection”. + 02 Ph.D students being-helped for formationjoined in project. |
| Research area | Conducted test painting of iron and steel structures at Viettel Equipment Manufacturing Joint Stock Company (M3) working in a marine atmospheric and marine environment on Truong Sa Island. The second test project has been painting steel structures of test buoys of the Joint Vietnam-Russia Tropical Science and Technology Research Center on Hon Tre Island - Nha Trang. These buoys have worked in seawater conditions and have been subject to harsh climates |
| Recommendations | The research team has successfully researched and manufactured four types of paint on a pilot scale. Evaluation tests according to international standards show that the samples have been still highly durable and work well over time. The research team recommends that the Vietnam Academy of Science and Technology continue to support the development of larger-scale products to apply paint to special projects in civil or national defense. |
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