Polymeric materials based on epoxy oligomer DER-331 and hardeners of different physical and chemical nature for repairing of gas production equipment
Keywords:epoxy matrix, gas industry, hardener, physical and mechanical properties
The optimal content of PEPA and TETA hardeners and polymerization temperature during matrix formation on the basis of epoxy oligomer DER-331 were determined. The dynamics of dependence of hardener content on physical and mechanical properties of epoxy matrix was investigated. According to the results of the study, materials with the optimal content of hardener and temperature range of polymerization for the formation of a composition with high physical and mechanical properties and its further use for the repair of gas equipment are proposed. Developed polymeric materials containing the hardener TETA with a content of q = 8–10 weight parts per 100 weight parts of epoxy oligomer DER-331 are characterized by high physical and mechanical properties, in particular: the fracture stresses during the flexion are σfl = 80.0–95.1 MPa, the modulus of elasticity E = 2.8–2.9 GPa, impact strength W = 7.9–13.5 kJ/m2. The fracture structure of such composites is characterized by less deep branched chip lines with relatively uniform transitions, which makes it possible to state a slight stress state of the polymer, and hence its increased resistance to fracture.
Sapronov, OO, Buketov, AV, Marushchak, PO, Panin, SV, Brailo, MV, Yakushchenko, SV, Sapronova, AV, Leshchenko, OV & Menou, A 2019, Research of crack initiation and propagation under loading for providing impact resilience of protective coating. Functional Materials.
Shamsuddoha, M, Islam, MM, Aravinthan, T, Manalo, A & Lau, K 2013, Effectiveness of using fibre-reinforced polymer composites for underwater steel pipeline repairs, Composite Structures, vol. 100, pp. 40–54.
Buketov, A & Brailo, M 2014, Optimization of the content and nature of epoxy matrix ingredients according to its properties, Bulletin of Ternopil National Technical University, vol. 2, pp. 90–99. [in Ukrainian]
Buketov, AV, Stukhlyak, PD & Kalba, EM 2005, Physical and Chemical Processes in the Formation of Epoxy Composite Materials, Zbruch, Ternopil. [in Ukrainian]
Kopey, BV, Arkhirey, MM & Venhrynyuk, TP 2010, Application of composite materials in oil production complex.
Limarenko, NA, Burganov, RR & Mochalova, YeN 2016, Influence of hardener content and curing temperature on the physical and mechanical characteristics of epoxy-amine composites based on DER-331 oligomer, Bulletin of Kazan University of Technology, vol. 19, no. 4. [in Russian]
Nizina, TA, Artamonov, DA, Nizin, DR, Andronychev, DO & Popova, AI 2017, The influence of hardeners on the manufacturability of epoxy binders and the mechanical properties of polymers based on them, Bulletin of the V.G. Shukhov Belgorod State University of Technology, vol. 9. [in Russian]
Sapronov, OO 2018, Polymer composites for the repair of the installation of the gas transportation industry. Prospecting and Development of Oil and Gas Fields, vol. 1, no. 66, pp. 71–75.
Smetankin, SO, Nihalatiy, VD, Buketov, AV, Sharko, OV, Skyrdenko, OI & Bahlyuk, HA 2016, Development of modified polymer composites for repair of details of power plants of transport systems, Scientific Bulletin of the Kherson State Maritime Academy, vol. 1, pp. 252–261. [in Ukrainian]
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