When using AB glue, bubbles may sometimes appear in the glue, which not only affects the appearance but also impairs the performance and bonding effect of the glue. Below are methods to solve the bubble problem in AB glue.

I. Proper Stirring Method

When mixing Part A and Part B of AB glue, stir slowly and evenly. Avoid violent stirring, as vigorous mixing tends to trap air into the glue and create bubbles. A glass rod or plastic rod can be used for gentle circular stirring to ensure thorough mixing of the two components.

II. Standing for a Period of Time

Do not use the mixed AB glue immediately. Let it stand for a while. During standing, small bubbles in the glue will gradually rise and burst. The standing time can be determined according to the glue specification and actual conditions, generally ranging from several minutes to more than ten minutes.

III. Defoaming Treatment

For high-precision applications, defoaming treatment is required. Two common methods are as follows:

1. Vacuum defoaming: Put the mixed AB glue into a vacuum container and turn on the vacuum pump. Under a certain vacuum degree, bubbles in the glue will expand and burst rapidly to realize defoaming.

2. Centrifugal defoaming: High-speed rotation of the centrifuge separates bubbles from the glue under centrifugal force.

IV. Control of Environmental Factors

The operating environment affects bubble generation. Operate in a dry and windless environment as much as possible to prevent dust and impurities from being brought into the glue by airflow and reduce air entrapment.

In summary, solving bubble problems in AB glue requires attention to stirring methods, standing process, defoaming treatment and environmental control. Proper operations can effectively reduce bubbles and improve glue performance and bonding quality.