Selection of surface modification methods for fillers

At present, the main way to improve the interface structure of filler-resin and the properties of filling composite system is to change the surface properties of filler so that it has good compatibility with resin. There are many ways to improve the surface properties of fillers, such as using low molecular coupling agents, surfactant, etc. . However, owing to the non-chemical bond between the coupling agent and the polymer and the filler, the coupling agent is easy to fall off and lose its coupling action in the process. And this kind of modification method often makes some properties of filling system decline, and surface polymerization modification of filler is an effective means to improve the adhesion between filler and basic resin.

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