... engineering plastic in the current market.With its good mechanical properties,abrasion resistance and self-lubricating function ... abrasion resistance and impact resistance.B. Polyamide Advantages1,good wear resistance.2,high toughness and rididity3,self- ... to oil,weak acid and alka5,good weatherability7,shock absorption8,noise absorption9,good electrical propertiesC. Polyamide Disadvantages1,poor ...