Citation
(2009), "Ultra-clear, fast-curing two-part silicones for potting and sealing", Pigment & Resin Technology, Vol. 38 No. 4. https://doi.org/10.1108/prt.2009.12938dad.002
Publisher
:Emerald Group Publishing Limited
Copyright © 2009, Emerald Group Publishing Limited
Ultra-clear, fast-curing two-part silicones for potting and sealing
Article Type: New products From: Pigment & Resin Technology, Volume 38, Issue 4
For potting and sealing applications where bond line aesthetics are critical, Henkel Corporation has introduced Loctite ultra-clear two-part silicones. These unique adhesives/sealants rapidly bond dissimilar substrates – especially glass – and maintain flexibility at both high and low temperatures (−60 to 450°F) (Figure 1).
Figure 1
Loctite ultra-clear two-part silicones cure to handling strength in 15 min and offer shelf lives in excess of 12 months at room temperature. These adhesives rapidly build strength and reliably support heavy components such as windows, skylights, outdoor signs and displays. Three ultra-clear, non-corrosive silicone products are currently available.
Loctite 5620 is a fast-curing silicone that cures in 30 min at room temperature. Loctite 5623 is a tack-free, tough silicone gel that cures in 24 h at room temperature or in just 1 h at 100°C. Loctite 5625 is a soft, re-enterable gel silicone that allows for potting compound repair and cures in 24 h at room temperature or in 1 h at 100°C. All three products can be manually or pneumatically dispensed.
Resisting temperatures up to 230°C, these non-corrosive silicones cure through large gaps and enclosed bond lines, require no primers and offer low odor dispensing. With elongations as great as 240 percent, these highly flexible materials withstand extreme vibration, flexing, and thermal shock. They are designed to resist UV rays, water, outdoor temperature variations and most cleaning solutions. These two-part formulations provide consistent, uncomplicated mixing, with simple 1:1 mix ratios versus competitive 10:1 mix ratios.
For more information visit: www.supersilicones.com