新產(chǎn)品·新技術(shù)信息

Techsil推出一系列固化時間在幾秒鐘的環(huán)氧膠粘劑

來源：林中祥膠粘劑技術(shù)信息網(wǎng)2014年10月27日

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Techsil Unveils a Range of Epoxy Adhesives which Cure within Seconds

Curing with UV-LED-light has helped to elevate light curable adhesive bonding to new levels of advancement. Until recently, UV-LED-hardening adhesives were limited to free-radical curing acrylates. With the recent development of new and innovative photoinitiators, cationic curing epoxy systems can now also be hardened in seconds.

Advantages of Epoxies

Proven reliability against environmental effects
Withstand effects of wide temperature differences
High glass transition temperature
Hardened epoxy adhesives feature dry and tack-free surfaces, making them the ultimate protective surface coating
Excellent optical characteristics with high refractive indices ? ideal for applications in precision optics and lens bonding
Low shrinkage for better positioning and minimal movement
Low ionic and alkali contents, with halogenide contents as low as < 10 ppm
Wide range of compositions to achieve the desired properties: they can vary from flexible and soft with high breaking strains, to hard and scratch-free with extremely high adhesion

Equipment manufacturers are now offering a new generation of UV-LED-curing equipment with higher output intensities, significantly reducing curing time for adhesives and coatings. Epoxy based resins can now be cured as fast as light curable acrylates. These UV-LED cured epoxies cure as quickly as with broad spectrum UV light cure but with added benefits.

Advantages of LED Technology

High energy efficiency
Less maintenance and significant reductions in energy costs
Long operating life (typical lifetime of LEDs> 20.000 hrs)
Less thermal radiation and thus lower thermal stress on heat-sensitive substrates
No stand-by times
No warm up or cool down phases needed

Techsil supplies a range of UV LED adhesives that can be used in a multitude of applications. These ranges of UV curing adhesives can be used with a wide variety of substrates such as plastics, glass, and metals and are used extensively in many sectors such as: electronics, medical equipment, glass bonding, and optics. The main range is Vitralit from Panacol which are all single component adhesives that cure within the space of a few minutes.

All Panacol LED-cure epoxy adhesives and sealants may also be cured using traditional broad spectrum UV curing equipment. Thus the new generation of epoxies can be incorporated into existing UV bonding processes.

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