The result indicated that the anhydrite could toughen and reinforce PP.The anhydrite modified by aluminium coupling agent was more effecive than the unmodified anhydrite.

• 结果表明:硬石膏能够增韧增强PP,经铝酸酯偶联剂改性的硬石膏的增韧增强效果比不改性更加明显;