Epoxy AB glue consists of two parts: epoxy resin and curing agent. After these two parts are mixed, they change from liquid to solid after a certain period. This stage is called curing. The curing time also varies according to the ratio. Some can be cured in a few minutes, and some can be cured in a few hours. However, it usually takes 24 hours to fully cure.
The stages of the curing process
The curing process is divided into three stages: Liquid-Gel-Solid
Liquid phase
The handling time is a part of the curing time. When the two components of the AB glue are mixed and the epoxy chemical reaction begins, the mixture is still in a liquid state and can be glued and potted.
Gel stage
When the epoxy mixture begins to gel or heat, it enters the initial curing stage, at which time the AB glue gradually changes from a sticky gel state to a hard rubber state.
Solid stage
When the epoxy resin and hardener are fully reacted, the mixture cures to a solid state and continues to cure for the next 24 hours until it is fully cured.
What to pay attention to when using AB glue
AB glue will generate a lot of heat and release an irritating odor during the mixing process. If you choose manual mixing, you need to strictly control the mixing ratio, pay attention to the processing time, and control the time of manual mixing in the liquid stage, otherwise, uneven mixing easy to poor glue adhesion.
Therefore, it is a good choice to use a disposable static mixer to obtain a better mixing effect and improve mixing efficiency. Disposable static mixers are made of plastic with alternating blades inside, continuously cut as the two fluids pass through the mixer, thus achieving a perfect mixing effect. This stage saves the process of manual stirring, avoids the generation of air bubbles, and improves the use effect of the adhesive.
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