The influence of metal oxide powders on the physical and mechanical properties of epoxy composites for the protection of constructions made of aluminum alloys

https://doi.org/10.23939/ujmems2019.02.016
Надіслано: Липень 20, 2019
Переглянуто: Серпень 28, 2019
Прийнято: Серпень 30, 2019
1
Lutsk National Technical University
2
Lutsk National Technical University
3
Lutsk National Technical University
4
Lutsk National Technical University
5
Lutsk National Technical University

Protection of designs of vehicles made of aluminum alloys is an urgent application problem because these alloys are being extensively destroyed under the influence of aggressive environments, climatic factors, cyclic changes of temperature, the influence of the flow of abrasive particles. The protective coating increases significantly duration of operation of the construction and reduce the number of overhaul operations associated with restoring the surface of the product. However, there is a problem associated with the complexity of the coating technology on the constructions made of aluminum alloys, because these surfaces are inert due to the presence of oxide films. To ensure reliable protection of the surface of the construction, it is necessary to provide high adhesion strength of coating with substrate, cohesive strength and corrosion resistance of the coatings. An effective solution to this problem is the use of polymer coatings based on epoxy resins, characterized by high adaptability, specific strength, high operated properties. The use of epoxy oligomers as a polymeric matrix allows you to meet the requirements, however, it requires the development of composition of epoxy composite material and coatings technology. The purpose of the work is determination of the influence of highly dispersed powders of metal oxides on the structuring process and mechanical characteristics of epoxy composites, and optimization of the composition for the formation of protective coatings of construction made of aluminum alloys. The classical methods of research of physical and mechanical characteristics of epoxy composites are used in the work: the gel fraction content, adhesion strength, compressive strength, impact energy. The optimum content of titanium oxide powder is found to be 8 wt % because these epoxy composites have the highest impact energy compared to composites having a different stoichiometric ratio of components. Considerable increase in impact energy of epoxy composites take place as a result of treatment of the composition at the mixing stage of the components with ultrasound, which ensures high uniformity of the composition and the lyophilicity of the powder particles. The developed coatings have increased adhesion strength, impact energy and compressive strength, which ensures their use as coatings of designs of vehicles made of aluminum alloys for protection against climatic conditions, abrasive wear and corrosion. A promising area of research is the introduction of modifying additives into the epoxy composites developed to increase their resistance to cyclic change of temperature and the application of treatment of the compositions in physical fields to ensure the high uniformity of the composition and increase the lyophilicity of the powder particles.

[1] Y. Ota, T. Kojima, “Surface treatment technologies of aluminum alloy for automobiles”, Kobelco Technology Review, no. 35, pp. 61–64, June, 2017.

[2] M. M. Bratychak, M. M. Bratychak, N. V. Chopyk, “Zahysni polimerni plivky na osnovi epoksy-oligoesternykh kompozytsij” [“Protective polymer films based on epoxy-oligoester compositions”], Budivelni materialy, vyroby ta sanitarna tekhnika [Construction materials, products and sanitary ware], vol. 42, pp. 67–71, 2011. [in Ukrainian].

[3] H. D. Johansen, C. M. A. Brett, A. J. Motheo, “Corrosion protection of aluminium alloy by cerium conversion and conducting polymer duplex coatings”, Corrosion Science, vol. 63, pp. 342–350, 2012. https://doi.org/10.1016/j.corsci.2012.06.020

[4] A. Stankiewicz, M. B. Barker, “Development of Self-healing Coatings for Corrosion Protection on Metallic Structures”, Smart Materials and Structures, vol. 25, no. 8, 084013, 2016. https://doi.org/10.1088/0964-1726/25/8/084013

[5] J. T. Boerstler, “Corrosion Degradation of Coated Aluminum Alloy Systems through Galvanic Interactions”, Ph.D. dissertation, Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, 2018.

[6] F. Pearlstein, V. S. Agarwala, “Trivalent Chromium Solutions For Applying Chemical Conversion Coatings To Aluminum Alloys or for Sealing Anodized Aluminum”, Plating and Surface Finishing, no. 81, pp. 50–55, July, 1994.

[7] Bonding to Aluminum. Epoxy Technology Inc., 2013. [Online]. Available: http://www.epotek.com/site/files/Techtips/pdfs/Tech_Tip_24_-_Bonding_to_.... Accessed on: June 10, 2019.

[8] M. Zoriany, A. Nashaat, Y. El-Shaer, M. Gobara, “Anti-Corrosion Silica-Based Hybrid Coatings for the Protection of AA2024 Alloy”, in Proc. 17th Int. Conf. on Aerospace Sciences & Aviation Technology, ASAT–17, Military Technical College, Kobry Elkobbah, Cairo, Egypt, April 11–13, 2017, pp. 1–17. https://doi.org/10.21608/asat.2017.22376

[9] Yu. M. Danchenko, O. V. Strumskas, T. M. Obizhenko, T. I. Umanska, “Epoksydni polimerni materialy z pidvyshhenoyu stijkistyu do vodnykh rozchyniv dlya restavraciyi naturalnogo kamenyu” [“Epoxy polymeric materials with improved resistance to water solutions for restoration of natural stone”], Problemy nadzvychaynykh sytuatsiy [Problems of Emergency Situations], no. 1 (29), pp. 100–112, 2019. [in Ukrainian].

[10] O. I. Redko, “Doslidzhennya struktury epoksykompozytiv z mineralnymy chastkamy metodom infrachervonoyi spektroskopiyi” [“Investigation of the structure of epoxy composites with mineral particles by infrared spectroscopy”], Naukovyj visnyk Khersonsʹkoho derzhavnoho morsʹkoho instytutu [Scientific Bulletin of the Kherson State Maritime Institute], no. 1 (4), pp. 245–252, 2011. [in Ukrainian].

[11] P. D. Stukhlyak, A. V. Buketov, O. I. Redko, “Zalezhnist gidroabrazyvnoyi znosostijkosti epoksykompozytiv vid pryrody i vmistu dvokomponentnogo napovnyuvacha” [“Dependence of water jet durability of epoxycomposites of the nature and content of two-component filler”], Problemy tertya ta znoshuvannya [Problems of friction and wear], vol. 53, pp. 159–174, 2010. [in Ukrainian].

[12] G. V. Martynyuk, “Vplyv napovnyuvachiv na protses polimeryzatsiynoho otrymannya epoksydnykh kompozytiv” [“Influence of fillers on the process of polymerization production of epoxy composites”], Pervyy nezavisimyy nauchnyy vestnik [First Independent Scientific Herald], no. 1, pp. 36–39, 2015. [in Ukrainian].

[13] Yu. Danchenko, V. Andronov, E. Barabash, T. Obigenko, E. Rybka, R. Meleshchenko, A. Romin, “Research of the intramolecular interactions and structure in epoxyamine composites with dispersed oxides”, Eastern-European Journal of Enterprise Technologies, vol. 6, no. 12 (90), pp. 4–12, 2017. https://doi.org/10.15587/1729-4061.2017.118565

[14] Yu. Danchenko, V. Andronov, M. Teslenko, V. Permiakov, E. Rybka, R. Meleshchenko, A. Kosse, “Study of the free surface energy of epoxy composites using an automated measurement system”, Eastern-European Journal of Enterprise Technologies, vol. 1, no. 12 (91), pp. 9–17, 2018. https://doi.org/10.15587/1729-4061.2018.120998

[15] P. D. Stukhlyak, K. M. Moroz, “Vplyv porystosti u systemi epoksydna matrycya – polivinilovyj spyrt-dyspersnyj napovnyuvach na udarnu vyazkist” [“Influence of porosity in epoxy matrix – polyvinyl alcohol – disperse filler system on impact viscosity”], Fizyko-khimichna mekhanika materialiv [Physicochemical Mechanics of Materials], vol. 46, no. 4, pp. 27–34, 2010. https://doi.org/10.1007/s11003-011-9312-x

[16] V. Kashytskyi, P. Savchuk, V. Malets, Y. Herasymiuk, S. Shchehlov, “Examining the effect of physical fields on the adhesive strength of protective epoxy composite coatings”, Eastern-European Journal of Enterprise Technologies, vol. 3, no. 12 (87), pp. 16–22, 2017. https://doi.org/10.15587/1729-4061.2017.103128

[17] V. M. Malets, I. V. Shvets, V. P. Kashytskyi, P. P. Savchuk, “Optymizatsiya skladu epoksykompozytnykh pokryttiv napovnenykh dyspersnym poroshkom tsyrkoniyu” [“Optimization of the composition of epoxy composite coatings filled by dispersed powders of zirconium”], Naukovi notatky [Scientific Notes], vol. 50, pp. 118–122, 2015.

P. Savchuk, D. Matrunchyk, V. Kashytskyi, O. Sadova, I. Moroz, "The influence of metal oxide powders on the physical and mechanical properties of epoxy composites for the protection of constructions made of aluminum alloys", Ukrainian Journal of Mechanical Engineering and Materials Science, vol. 5, no. 2, pp. 16-24, 2019.