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The thermal stability of polymers is a main issue when used as friction elements under dry sliding. Cast polyamide grades processed with either natrium or magnesium catalysors are slid on a small-scale and a large-scale test configuration to reveal the effect of softening or degradation on the sliding stability and to investigate possibilities for extrapolation of friction and wear rates between both...
Polyethylene terephthalate/polytetrafluoroethylene (PET/PTFE) composites were slid under different temperatures or contact pressures and surfaces are scanned with Raman spectroscopy to examine orientation and crystallisation effects induced by frictional stresses and flash temperatures. Characteristic absorption bands at 996 cm−1 and 857 cm−1 or 2,908 cm−1 and 2,960 cm−1 are used for quantification...
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