摘要：In the direct addition method, pre dried fillers, resins, and coupling agents need to be fed into a high-speed mixer or internal m

Why can titanium ester coupling agents significantly improve the performance of composite materials?

The application process of titanium ester coupling agents mainly includes two methods: direct addition method and pretreatment method.

In the direct addition method, pre dried fillers, resins, and coupling agents need to be fed into a high-speed mixer or internal mixer in predetermined proportions. After thorough mixing, they can be granulated, stretched, or extruded according to conventional plastic processing procedures. This method is easy to operate and can meet different needs by adjusting the type and amount of coupling agent.

The pre-treatment method requires first surface treatment of inorganic fillers with coupling agents, and then mixing them with resins and other additives for granulation. The surface of the filler treated with coupling agent changes from hydrophilic to hydrophobic, which not only significantly improves the coupling effect, but also avoids moisture absorption problems, thereby ensuring stable material properties. Pre treatment can be achieved by diluting the coupling agent with anhydrous solvent, or by using high-speed stirring and heating method, which can avoid solvent consumption and achieve better treatment results.

The specific operation steps are as follows: first, place the filler in the mixer and stir, and gradually raise the temperature to 7090; Then uniformly add the titanium ester coupling agent; Finally, continue stirring for 1030 minutes to obtain the activated filler.

来源：躺平闲聊天