1）纤维增强

1) fiber reinforced

2）增韧技术

2) toughening technology

3）填充改性

3) filling modification

4）共混改性

4) blending modification

5）阻燃技术

5) flame retardant technology

6）接枝改性

6) graft modification

①溶液法，在溶剂中加入过氧化物引发剂进行共聚；

Solution polymerization was initiated by adding peroxide initiator in the solvent;

②辐射法，在高能射线下接枝；

Radiation method, grafting under high energy radiation;

③熔融混炼法，在过氧化物存在下，于熔融状态 下混炼，进行接枝，常常在双螺杆挤出机中进行。接枝改性的高分子材料的性能 与接枝物的物化性能有关，也与接枝物的含量、接枝链的长度等有关，其基本性 能与聚丙烯相似， 但与极性高分子材料、 无机材料、 橡胶等的相容性可大大提高。 接枝 PP 的结晶度和熔点随接枝物含量的提高而下降，透明性和低温热封性却随 之提高。

The melt mixing process is carried out in the presence of peroxide and mixed in the molten state, and is often carried out in a twin screw extruder. The physicochemical properties and properties of graft copolymer grafted polymer materials of the relevant content, and the graft graft chain length, the basic properties of polypropylene and similar, but with the polar polymer materials, inorganic materials, such as rubber compatibility can be greatly improved. The crystallinity and melting point of grafted PP decreased with the increase of graft content, while transparency and low temperature heat sealing increased.