Why does the edge appear whitish after using the instant glue?
24 Mar 2023
Instant glue is also called instant glue and quick-drying glue. It is a low-viscosity, transparent, and fast-curing adhesive at room temperature. It has strong versatility and has good adhesion to most materials. It is widely used in manufacturing. Widely, now follow Kang Libang to understand, why does the edge of the silicone gel appear white after using instant glue?
1. The rainy weather and the air are humid
Solution: Improve the air humidity in the workshop, close the doors and windows of the workshop, and use dehumidifiers or air conditioners to assist.
2. The environment for gluing is not ventilated
Solution: Enhance the ventilation of the workshop, which can be assisted by fans to reduce whitening.
3. Excessive application of glue will also cause instant glue whitening, or affect the bonding strength
Solution: Apply even and appropriate amount of glue, not too much, and it is recommended to use machine dispensing if conditions permit.
4. Before using instant glue, spray a layer of accelerator on the surface of the adhesive material, and then use glue to bond.
5. Immediately after bonding, stack and pack
Solution: Put it aside for 24 hours after bonding, then pack.
Whether the polyaddition reaction is sufficient is the decisive factor for the whitening phenomenon after the instant glue is cured. The whitening phenomenon is caused by the volatilized steam and moisture of the monomer during the curing process of the instant glue, which produces low polymer and appears white. This phenomenon is called "whitening".
Therefore, effectively control the coating thickness of the instant glue, improve the ventilation conditions of the instant glue operation site, maintain appropriate air humidity (relative humidity 50%-70%) and temperature (22-28 degrees Celsius), and effectively avoid the instant glue curing Whitening occurs.
Kanglibang can provide technical guidance and provide personalized customization solutions during customer use. According to customer needs, we can develop and provide more advanced silicone glue and silicone materials.