An investigation was made of the structure at different levels of its organisation and the physicomechanical properties of linear polyethylene under the action of nanosized silicon, titanium, and molybdenum carbides. It was established that the change in the thermomechanical characteristics of the nanocomposites and the increase in hardness and softening point of the materials are due to modification of the molecular and crystal structure of the polymer by nanosized carbides.
For the case of a large-tonnage plastic (linear polyethylene) containing additions of nanosized silicon dioxide, it has been shown experimentally that thermomechanical and photochemical action on the obtained polymer nanocomposites leads to a change in the molecular and supermolecular structure of the polymer such that there is an increase in the strength of the materials at a temperature exceeding the equilibrium temperature of melting of polyethylene, and an increase in their softening point.
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