Thermal processes within polyethylene in mixtures with a high content of inorganic components after plastic deformation under high pressureстатья
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Дата последнего поиска статьи во внешних источниках: 26 июня 2019 г.
Аннотация:Mixtures of LDPE, HDPE and nascent supermolecular PE (NSMPE) with 80% germanium dioxide, magnesium, magnesium oxide and sodium chloride were subjected to plastic deformation under a pressure of 0.5 to 4.0 GPa and were then studied by DSC. The influence of the electrophysical conditions under which the pressure working was carried out on the thermal processes taking place was investigated. Deformation under high pressure was shown to lead to an increase in the enthalpy of melting of the polymer in the different polymers by a factor of 1.3 to 1.8. In mixtures with inorganic components, the enthalpy of melting could reach 350 J/g (NSMPE and 90% Mg) and 400 J/g (NSMPE and 90% NaCl). On thermograms of deformed mixtures, exothermic processes were observed. The thermal effects detected were possibly due to interphase interaction at the phase boundary. 8 refs. (Article translated from Plasticheskie Massy, no. 3-4, 2017, pp 6-11)