Using a double-screw extruder, the characters of polypropylene (PP) melt-grafted by maleic anhydride (MAH) with and without adding the assistant were studied respectively.

• 用双螺杆挤出机研究了加入助剂和不加助剂的马来酸酐(MAH)对聚丙烯(PP)的熔融接枝改性。