Interface agent is also called interface treatment agent. Interface agent, in essence, is an adhesive. Like the common interface agent we use, it is generally made of vinyl acetate-ethylene.
The role is generally the following five points.

① Principle of action.

When we use interface agent, it is the surface of the wall or the surface of the ground. That is to treat the surface of the object. The effect formed at this time is actually the adsorption and coating effect of physical effect. At the same time, physical and chemical effects can be achieved.
In this way, the physical and chemical properties of the surface of the material or the inside of the surface layer are improved through the physical and chemical effects of the material itself. In fact, to sum up, it is to solve the bonding properties of the surface of the material.

② Solve the problem of bonding between the new and old materials.

Here it is mainly for wall treatment in home decoration. Because our home decoration, the original wall is decorated. Later we need to redecorate, then we need to deal with the original wall.
At this time, in order to solve the problem of bonding between the old wall and the new decorative layer. The interface agent is applied, which is also a common role of the interface agent in home decoration.
In fact, the interface agent is summarized. Its most essential role is to connect the upper and lower layers and consolidate the bonding problem between the base layer and the decorative layer.

③ Solve the problem of insufficient bonding of the surface layer.

This is mainly for our concrete walls. As we all know, for concrete walls, since they are made by supporting formwork and pouring concrete, their surfaces are very smooth. And the bonding force of smooth concrete surfaces is very low. Therefore, in order to increase the bonding force between the concrete surface and the decoration materials, the interface agent can generally be applied on the wall surface to increase the bonding between the materials.

④ Solve the problem of the strength of the wall surface material itself.

Like the interface agent we see now, it generally has two-way permeability. The role that can be achieved is to achieve two-way penetration bonding. In this way, after we apply the interface agent to the wall, we can use the permeability of the interface agent to bond some materials with low strength on the wall surface together.
For example, our most common wall surface has slight sanding. After applying the interface agent, you will find that the wall surface strength is very high, which can effectively solve the sanding problem on the wall surface.

⑤ It has a certain sealing effect on the surface of the wall.

The main purpose of using the interface agent to seal the wall surface is to achieve the aging resistance of the wall surface. It can also improve the acid and alkali resistance and weather resistance of the wall. In addition, although the interface agent can play a certain sealing role, it also has good permeability. Therefore, it can also avoid wall mold caused by wall moisture.