Restrictions on the use of glass silicone sealant

Restrictions on acid glass silicone sealant : Acid silicone sealant will corrode or cannot bond copper, brass (and other copper-containing alloys), magnesium, zinc, electroplated metal (and other zinc-containing alloys), and it is recommended that masonry be made into articles And do not use acid glass silicone sealant on the iron carbide substrate. Use acid glass silicone sealant

on materials made of methyl methacrylate (PLEXIGLAS), polycarbonate, polypropylene, polyethylene and TEFLON (Teflon, polytetrafluoroethylene) It will not be able to obtain good adhesion and good compatibility. Acid glass silicone sealant is not suitable for connections that move more than 25% of the joint width. Ordinary acid glass silicone sealant should not be used on structural glass (except for acid structural silicone sealant ). In addition, it should not be used where there is abrasion and substantial disadvantages. Use acid glass silicone sealant . The surface temperature of the base material of silicone acid glass silicone sealant exceeds 40℃ and it is not suitable for construction. Restrictions on neutral silicone sealant: Neutral silicone sealant is not suitable for structural glass assembly; it is not suitable for construction if the substrate temperature exceeds 50°C. Silicone structural adhesive restrictions: Except for the full curtain wall, silicone structural sealant cannot be injected on the construction site; the surface temperature of the silicone structural adhesive is not suitable for construction if the substrate surface temperature exceeds 40°C. Storage conditions and shelf life The silicone sealant should be stored below 27°C in a cool, dry place. Good quality acid glass silicone sealant can guarantee more than 12 months, and general acid glass silicone sealant can be stored for more than 6 months; neutral silicone sealant and structural glue can guarantee a shelf life of more than 9 months. If the bottle has been opened, please use it up within a short time; if the silicone sealant is not used up, the bottle must be sealed. When using it again, the bottle mouth should be unscrewed to remove all blockages or replace the bottle mouth.


Post time: May-25-2021