如何选择合适的相容剂

How to choose the appropriate compatibilizer

相容剂是两种共混聚合物的单体共聚而成的嵌段共聚物，或接枝共聚物，或者含有与共混组分起化学反应的官能团，能分布在两种或两种以上共混聚合物界面之间的共聚物，其作用是降低界面张力，阻止分散相凝聚，稳定已形成的相形态结构，以增加两种或两种以上聚合物的相容性。

The compatibilizer is a block copolymer, either a block copolymer, or a graft copolymer, or a functional group containing a chemical reaction with the blend component of two kinds of blends, which can be distributed between two or more than two kinds of blends. The effect is to reduce the interfacial tension, prevent the condensation of the dispersed phase and stabilize the form. The phase structure is added to increase the compatibility of two or more than two polymers.

相容剂的相对分子质量应与相应的共混物相对分子质量相匹配，并具有良好的相容性。一般来说，二嵌段共聚物的相容性优于三嵌段共聚物的相容性。

The relative molecular mass of compatibilizer should match the relative molecular weight of the corresponding blend and has good compatibility. Generally speaking, the compatibility of the two block copolymer is better than that of the three block copolymer.