Question

how friction effect the temperature

Answer 1

When the temperature rises, on one hand, the thermal movement ability of moving units could be improved, and on the other hand, because of thermal expansion, the space between molecules is increased so the free volume within the high polymer becomes larger which speed up the molecular movement and shorten the duration for laxation. Accompanied with the laxation of high polymer, the thermal property, visco-elastic property and other physical properties would be changed greatly. As one of the regular mechanical indexes, coefficient of friction could also be influenced by the increase of temperature. Generally, with the rise of ambient temperature, the coefficient of friction of the material surface would be changed. Such change varies for different materials.