Q: Why can coupling agents improve the durability of fillers?

Q: Why can coupling agents improve the durability of fillers?

Answer:After multiple experiments, it has been proven that,coupling agentThe reason why the durability of the filler can be improved can be attributed to the following aspects.

Firstly, the adhesive interface forms chemical bonds or hydrogen bonds, making the interface stronger and more stable.

Secondly, the coupling agent changes the bonding performance between the epoxy resin and the filler, increasing the cohesive strength of the adhesive layer, thereby forming a new interface between the epoxy adhesive and the bonded material and the polysiloxane, preventing moisture and dampness from penetrating the interface and enhancing the ability to resist environmental corrosion.

Furthermore, the coupling agent reacts with the epoxy resin and the adhered surface to form chemical bonds, increasing the adhesive force and improving the bonding strength.

In addition, the coupling agent reduces the viscosity and surface tension of the epoxy adhesive system, improving the wettability of the adhered material. Coupling agents have a certain degree of selectivity, which means that not just one coupling agent can be fully applicable to any system, but it needs to be matched. In addition to selecting based on the reactivity of the organic functional groups of the formulation itself with the epoxy resin, the acidity and alkalinity of the system should also be considered.

Today, the editor of Jianyi Chemical briefly introduced the reasons why coupling agents can improve the durability of fillers, hoping to bring help to everyone.