Concrete interface agent is an adhesive, generally made of vinyl acetate-ethylene.

1. It has super strong adhesion, excellent water resistance and aging resistance. Improving the bonding strength of plastering mortar to the base layer can effectively avoid problems such as hollowing, falling off, shrinkage and cracking of the plastering layer. ?

2. It is used to treat the surfaces of concrete, aerated concrete, lime sand bricks and fly ash bricks to solve the problem that the interface is not easy to bond due to strong water absorption or smoothness of these surfaces, causing the plaster layer to be empty. bulging, cracking, peeling, etc.

Extended information:

Factors affecting adhesion and its strength:

1. Interface damage: The adhesive layer is completely separated from the adhesive surface (the adhesive interface is intact detachment);

2. Cohesive failure: damage occurs in the adhesive or adherend itself, not between the adhesive interface;

3. Mixed failure: adherend and adhesive layer itself Both are partially destroyed or only one of the two.

These damages indicate that the bonding strength is not only related to the force between the adherend and the adherend, but also to the force between the molecules of the polymer adhesive. The chemical structure and aggregation state of polymer molecules strongly affect the bonding strength. Studying the molecular structure of the adhesive base material is very important for the design, synthesis and selection of adhesives.

Baidu Encyclopedia - Concrete Interface Agent