Frequently Asked Questions about UV adhesives

2025-03-04

Under normal conditions, the ultraviolet wavelength of sunlight does not reach the wavelength required for UV adhesive curing

1. Can UV adhesive cure under sunlight?

  Under normal conditions, the ultraviolet wavelength of sunlight does not reach the wavelength required for UV adhesive curing, so it generally will not cure easily. Only with prolonged exposure and intense sunlight might a curing reaction occur.

  2. If the adhesive isn't properly bonded but has already cured, how can it be removed?

  If the UV adhesive has cured, it needs to be treated with a solvent, such as soaking in acetone or ethanol. If it hasn't completely detached, soak it for a longer time.

  It can also be removed by heating or using a hot air blower.

 

 

  3. How long does it generally take for UV adhesive to fully cure?

  Normally, it cures in a few seconds under UV irradiation. However, the time for complete curing depends on the material, UV wavelength, the transparency of the bonded product, and the UV irradiation distance, so there isn't a fixed time. But the overall time is not very long.

  4. Why is it that when UV adhesive bonds metal and glass, it tends to peel off easily in the summer?

  In summer, the surfaces of metal and glass become damp due to rain, causing the adhesive strength to decrease and gradually peel off. A hot air blower can be used to dry it.

  5. Can UV adhesive be used with plastics?

  Yes, but plastics have lower temperature resistance, so pay attention to heat dissipation during curing to avoid high-temperature deformation. Also, the transparency of plastics to ultraviolet light is slightly lower, so the irradiation time and intensity can be increased.