1.The reason why compatibilizer is called Maleic Anhydride Grafted Compatibilizer is that it can improve the compatibility between polymer and alloy (this coupling agent is not good), and improve the compatibility and combination between resin and filler. For example, for PC / ABS alloy, it is useless to add maleic anhydride graft compatibilizer and coupling agent.
2.maleic anhydride graft compatibilizer is a high polymer, which is not easy to decompose and destroy at high temperature, and low molecular coupling agent does not have.
3.Because of the strong polar group grafted, the tensile strength of the raw material (before grafting) is generally doubled. The addition of the coupling agent to the material also improves the tensile strength, and the increase of the coupling agent is small.
4.the toughening agent and coupling agent of nylon, PP, PBT and other plastics are not good. Adding maleic anhydride graft elastomer compatibilizer is very good – absorbing the impact energy and transferring it.
Of course, the coupling agent also has properties that the compatibilizer does not have: it can be used as cross-linked cable.
When there are many fillers, it is cheaper to use coupling agent. If less filling is needed, the compatibilizer is selected, and the injection is directly and simply mixed without drying, activation and other processes.
