The PTFE-nanocomposites mechanical properties for transport systems dynamic sealing devices elements

Mechanical Science and Technology Update

力学;物理学

Mashkov, Y.K.^1 ; Egorova, V.A.^1 ; Chemisenko, O.V.^1 ; Maliy, O.V.^1

Omsk State Technical University, Mira ave., 11, Omsk

644050, Russia^1

关键词: Elevated temperature;    Nano scale;    Polymer nanocomposite;    Temperature changes;    Transport systems;    Tribosystems;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/858/1/012018/pdf
DOI  :  10.1088/1742-6596/858/1/012018

学科分类：力学，机械学

来源: IOP

【 摘 要 】

The mechanical properties study results of polymer nanocomposites based on polytetrafluoroethylene with modifiers in the form of micro- and nanoscale cryptocrystalline graphite and silicon dioxide powders are determined. The nanocomposites mechanical properties determined values provide high sealing degree of transport systems dynamic sealing devices elements. When the temperature changes from cryogenic to high positive then the elastic modulus, tensile strength decrease significantly and nonlinearly, the latter limits the composite usage in heavily loaded tribosystems operating at elevated temperatures.