The friction and wear behaviors of calcium sulphate whiskers modified bismaleimide resin under different friction load

coupling agent

and whisker content were investigated．The resets show that the resin matrix exhibits adhesion wear under lower friction load

but it shows serious plastic distortion and crack under high friction load．The properties of composites with calcium sulphate whisker arc improved obviously．The wear rates of the composites are decreased markedty by adding calcium sulphate whiskers．When friction load increases from 200 N to 300 N

the wear of the resin matrix is changed from an adhesion wear to a fatigue one．At lower whisker contents

the wear of the composites shows adhesion features．While at higher whisker contents

it is dominated by particle wear．