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UV/LED Cure Adhesives

MG Chemicals offers UV-curable adhesives for edge bonding when high throughput is needed. These adhesives cure almost instantaneously and can be cured with either conventional UV light or popular LEDs.

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UV LED Cure Adhesives
  • 1-part system – Composed of a single-component, these adhesives are simple to apply as no measuring or mixing is required. This ease of use minimizes errors during application, ensuring consistent performance and reducing preparation time for users
  • Fast cure – UV light adhesives cure in seconds upon exposure to UV light, enabling high part throughput
  • Secondary moisture cure – Shadowed areas cure passively by exposure to atmospheric moisture
  • Low Viscosity – Can be used as an adhesive, coating or encapsulant (up to 5mm thick)
  • LED Cure – Can be cured with common LED sources such as 365, 395 and 405nm
  • Strong adhesion – Bonds well to many plastics, metals, glass and composites
  • Edge bonding PCB components – The adhesive bonds components like resistors, capacitors and transistors to circuits by applying a thin layer of adhesive around the outer perimeter of the component
  • Screen and Lens Bonding – The high clarity and precision of UV adhesives make them an ideal choice for bonding lenses and screens for microscopes, computers and cell phones
  • Fibre optic bonding – Secures fibre optic cabling to ferrules
  • PCB Encapsulation – For low viscosity versions, shallow depths up to 5mm can be encapsulated
  • Photo-voltaic cell Sealant – Bonds and seals PV cells from moisture in solar panels
The adhesive is not curing, what am I doing wrong?

There are a few variables to consider here but light source is a good place to start. These adhesives respond to light sources that operate within the 200 – 405nm wavelength region so please check that your light output includes these wavelengths. Next, check the irradiance of the light output using a radiometer to measure, note that you can increase the irradiance by moving the adhesive closer to the light source. Finally, use the dosage values found on the product TDS to determine how long the adhesive needs to be exposed to the light. The formula to determine the time in seconds is

time(seconds) = Dosage(J/cm2)/Irradiance(W/cm2)

You can also test different times and check when the adhesive is no longer tacky but dry and firm.

What about shadowed areas that don’t see light?

These adhesives are formulated with specialty resins that enable a secondary moisture cure mechanism for shadowed areas. Full cure in shadowed areas takes approximately 24 hours.

Can I get a UV adhesive in custom color?

Some colors can be made available however, other colors are not possible since they block the wavelengths needed for the adhesive to cure. Contact Technical support [email protected] to inquire further.

What substrates can I cure?

You can form conventional bonds with optically clear materials like glass and polycarbonate either to themselves (i.e. glass/glass) or a dissimilar substrate (glass/Aluminum). For opaque materials, you cannot simply apply the adhesive between the 2 materials as they will not receive the necessary light to cure. You can however apply adhesive around the seams where 2 opaque materials meet and adhere the materials that way.

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