Funct. Mater. 2020; 27 (3): 587-594.
Photocurable polymer composite materials with an improved combination of strength and service properties
Department of Technology of Plastics and Biologically Active Polymers, National Technical University "Kharkov Polytechnic Institute", 2 Kyrpychova Str., 61002 Kharkiv, Ukraine
This scientific paper delves into a new method of the photochemical cross-linkage of the encapsulating and adhesive materials that are based on oligoester acrylates with addition of the epoxy resin (oligomer) ER-20. The objects of research were oligocarbonate methacrylate OCM-2, epoxy oligomer ER-20 and the synthetic aluminosilicate (zeolite) filler. The additives for the photoinitiation were benzoin and its ethers. Studies the strength-, service and thermal properties of polymer composite materials (PCM) and the behavior of structural properties under different conditions. The obtained data allowed us to minimize the shrinkage of PCMs, increase their thermal oxidation stability and speed up the cross-linkage process. It was established that the combination of oligocarbonate methacrylate OCM-2 and the epoxy oligomer ER-20 has a significant effect both on the PCM cross-linkage process behavior and on its strength and service properties. The PCM composition was suggested for the encapsulation and moisture protection of the modules and assemblies of radio electronic equipment. A comparative evaluation of the suggested method of cross-linkage with the thermochemical curing allowed us to define the advantage of the photochemical method used for the material cross-linkage.
1. A.A.Berlin, H.V.Korolyov, T.Y.Kefeli et al., Acrylic Oligomers and Materials Based on Them, Khimiya, Moscow (1983) [in Russian].
2. I.A.Novilova, M.A.Vaniyev, Procced. XII Intern. Conf. Chem. Phys. Chem. Oligomers, Chernoholovka, Moscow, Russia (2017), p.12.
3. E.A.Starostin, M.S.Moskovskih, V.V.Dvirniy et al., Proceed. Intern. Conf. "Reshetny Readings", 1 (2018), p.171.
4. A.I.Lomanov, Protection of Electronic Equipment from the Harmful Effects of External Factors, Moscow (2012) [in Russian].
5. A.H.Byelov, V.Y.Bannov, V.A.Trusov et al., Mod. Inform.Techn., 14. 65 (2019).
6. V.Shyrshova, Comp. Techn., 2, 128 (2002).
7. A.F.Maslyuk, V.A.Khrapovskiy, Photochemistry of Polymerization-Capable Oligomers, Naukova Dumka, Kiev (1989).
8. J.Hillet. Photophysics and Photochemistry of Polymers, Moscow, Mir, 1988, [in Russian].
9. Y.Rabek, Experimental Methods in Polymer Chemistry, Mir, Moscow, 1983, [in Russian].
10. L.L.Hlikman, M.M.Pisarevskiy, Zavodskaya Laboratoriya, 75 (1951).
11. H.O.Bekker, Introduction to the Photochemistry of Organic Compounds, Khimiya, Leningrad (1976) [in Russian].
12. L.P.Pidhorna, H.M.Cherkashyna, V.V.Lebedev, Theory and Methods of Research and Testing of Plastics, Adhesives, Sealants Pidruchnyk NTU "KPI", Kharkiv (2012).