Effect of Treatment in a Magnetic Field on the Triboacoustic Characteristics of Copper-Containing Polymer Friction Composites

The effect of treatment with a pulsed magnetic field on the triboacoustic characteristics of polymer friction composites containing up to 20 wt. % dispersed copper. It has been shown that among various physical and mechanical properties, a statistically significant response to magnetic field treatment of a mixture of composite components is demonstrated by dynamic mechanical characteristics. It was found that magnetic treatment of initial mixtures of composites in both unipolar and bipolar modes with field strength of 20 kA/m leads to a decrease in the difference between the coefficients of static and dynamic friction by 3.0—3.4 times without a statistically significant change in the wear rate and loss of braking efficiency. A reduction in sound pressure levels during friction by 23—24 dB in the frequency range above 2 kHz has been experimentally confirmed.

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