The nitrile rubber/polyamide thermoplastic vulcanizate(NBR/PA TPV) was prepared by pre-blending method of rubber and plastic,two-stage method and masterbatch method.The effects of blending process on the phase structure,rheological properties,mechanical properties and solvent resistance of NBR/PA TPV were studied.The results showed that there was slight chemical reaction between NBR and PA under high temperature and high shear rate, but the chemical reaction did not influence on the process of phase reversi...