Effects of glass-to-rubber transition of thermosetting resin matrix on the friction and wear properties of friction materials

The present study is to examine the effects of glass-to-rubber transition of resin matrix on the friction and wear characteristics of friction materials, in relation to different types of thermosetting resins. Dynamic mechanical thermal analysis and friction test results revealed that glass-to-rubber transition of thermosetting resins influenced significantly the friction and wear behavior of the composite materials. There was a significant increasing tendency in friction coefficient and wear rate values for all composites when braking temperatures increased to 200 or 250 °C, accompanying the resin matrix converted from glassy state to rubbery state.

► Phenolic resin, polybenzoxazine resin and blend resins as binder matrix. ► Thermal transition influence tribological property for resin based friction material. ► Friction coefficient increased sharply when glass-to-rubber transition happened.