How to use adhesive correctly

How to use adhesive correctly

 

Adhesives not only need to stick firmly, but also need to have long-lasting adhesion. No matter how good the adhesive is, if it cannot last long, it will fall off after a period of time, or the adhesion will decrease for some reason. Therefore, we sometimes need to think of some ways to ensure the persistence of adhesion.

 

Research and experience show that adhesives can bond things by intermolecular attraction. The bonding forces occurring at the interface are composed of secondary forces (physical forces, electrostatic forces, primary forces (chemical forces) and mechanical forces. Among them, secondary forces are the main force that produces bonding forces.

 

Therefore, how to use adhesive correctly:

 

  1. 1. Procedure of bonding process: Surface treatment is carried out for different properties of adherends and different situations. It can be strictly divided into general methods, chemical methods and physical methods. In the decoration industry, it is mainly for simple treatment of adherends. For example, dust, oil, rough surface, moisture and other aspects are treated to ensure that the adhered surface is clean, dry and oil-free.

 

  1. 2. Glue the surface to be bonded evenly to ensure wetting and avoid bubbles as much as possible. Pores will greatly reduce the bonding strength and cause debonding. Pay attention to aligning the position once and not to move it. Pressurize and remove air to make it in close contact.

 

  1. 3. Curing is the process of solidifying the adhesive layer through chemical and physical effects. Curing is the last step to obtain bonding properties and has a great influence on bonding strength.

 

During the curing process, temperature, pressure and time are three important parameters of the curing process. The change of each parameter has a direct impact on the bonding strength (each adhesive has a specific curing temperature and time). Applying a certain pressure during curing is necessary for all adhesives, because pressurization is conducive to the diffusion and penetration of the adhesive, close contact with the adherend, and helps to exhaust gas and moisture, avoid the formation of bubbles and pores, and make the adhesive layer uniform and the position of the adherend fixed.

 

Whether it is through chemical reaction or physical action to complete the curing of the adhesive layer, it takes a certain amount of time. In order to fully cure and obtain the maximum bonding strength, sufficient curing time must be ensured (this is usually referred to as a certain amount of time for the adhesive to reach its final adhesion).


Post time: 2024-07-05 15:35:19
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