PSI - Issue 30

Aisen Kychkin et al. / Procedia Structural Integrity 30 (2020) 59–63 Aisen .Kychkin et al / Structural Integrity Procedia 00 (2020) 000–000

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Comparative results of research of efficiency of epoxy binder modification by means of CNT are presented in Table 1.

Table 1 - Comparative results of tests.

Module of elasticity at a compression, MPa

CNT, masses %

Module of elasticity at stress, MPa

Compressive stress, MPa

Tensile strength at stress, MPa

Impact strength, kJ/m 2

0,00 0,05 0,10 0,20 0,25 0,50

78±7,0 71±6,0 68±5,50 66±5,50 59±4,55 62±5,00

1216±85 1425±84 1555±95 1583±77 1608±82 1592±98

3,12±0,4 3,03±0,35 4,94±0,40 3,58±0,35 3,05±0,28 2,45±0,17

109±12 116±12 128±11 100±8

2135±64 2207±55 2324±60 2297±67 2348±70 2343±65

95±7

102±11

Stability and reproducibility of the achieved effects are very sensible to homogeneity of distribution and degree of dispersancy of CNT, that are in the system as agglomerates of different sizes. Consequently, one of key questions, when estimating efficiency of modification, is a question about distribution and concentration NT in the content. 4. Conclusions It was revealed that tension centers which take on the role of CNT particles are formed after adding modifiers to the composition of the epoxy binder. They form a framework of particles in the bulk of the binder, which increase the rigidity of the structure and, accordingly, increase the efficiency of resistance to compressive and bending loads. The researched samples of epoxy binder showed that at addition CNT there is increase of the module of elasticity at stress and compression. There is increase of the module of elasticity at stress on 32% and module of elasticity at compression on 10% in the composition of epoxy binder with the CNT concentration from 0,25 mass% to 0,5 mass%. The substantial increase of impact strength is observed in the composition of epoxy binder with the CNT concentration 0,10 mass% and makes 4,94±0,40 kJ/m 2 , compared to 3,12±0,4 kJ/m 2 of clean epoxy binder without CNT. The achieved findings indicate he need of further studies of morphology of modified polymer structure and change of elastic- strength properties when modified with carbon nano particles. References Iartsev V.P., М . А . Podolsk, 2014. Composites on the basis of polyester resin with polymeric additions. Announcer TG Т U 3. pp.557�563. Inam, F., Luhyna, N..2012. Carbon Nanotubes for Epoxy Nanocomposites. A Review on Recent Developments. In proceeding of 2nd International Conference on Advanced Composite Materials and Technologies for Aerospace Applications. Wrexham, UK, pp. 80-86. Moosa A.A., Ramazani A. S. A., Ibrahim M.N., 2015. Effects of Carbon-Nanotubes on the Mechanical and Electrical Properties of Epoxy Nanocomposites. International Journal of Current Engineering and Technology 5. p р .3253. Muhammad Ismail A.H., Risby M.S., Ali A., Sapuan S.M., Hoque M.E., 2015. Flexural strength and fracture toughness of carbon Nanotubes (CNTs) reinforced epoxy composites. In Proceedings of Seventh TheIIER International Conference. Singapore, р p.44-48. Mohamed I., Saleh N. J., Mohmoud L.H., 2015. Studying the Mechanical Properties of Epoxy Carbon Nanotubes Composite. College of Engineering Journal (NUCEJ) 1. pp.84-90. Putilov, А .V., 2002. Nanomaterials and nanotechnologies are a breach in the future. Engineer-chemical science for advanced technologies. М .: Science, pp.284. Sokolenko, I.V., 2014. Perspective fillers for the polyester composites. The International scientific research 2-4, pp.92-93. Vigdorovich V.I., 2013. Carbon nanomaterials and composites on their basis. Announcer of the Tambov university. Series: Natural and technical sciences 4. pp.1220-1228. Vereshagin, А .L., 2001. Ultrafine diamonds of detonation synthesis. Biisk: Pub. of Altaj State Technical University. pp.177. Domun N., Hadavinia H., Zhang T., Sainsbury T., Liaghata G. H., Vahida S., 2015. Improving the fracture toughness and the strength of epoxy using nanomaterials – a review of the current status. Nanoscale 7. pp.10294– 10329.