High - performance train brake plate was developed with the polybenzoxazine ( mulitphenol type ) / vermiculite hybrid nanocomposites . it has a narrow brand strip of friction coefficient ( 0 . 35 ~ 0 . 45 ) , hig 45人摩擦系数高,无明显的“过恢复”和“热衰退”等现象,机械性能优良等特点。