Heat Resistant Glue RTV-548 (addition type silicone) for adhesive seal, and encapsulation use The product is designed for many electric, industrial and construction application. Such used for permanently flexible seal, high tensile strength, excellent weather resist, good adhesion between metal, glass,ceramic, wood and plastic. Introduction : RTV-548 (addition type silicone) has excellent chemical & physical properties, which generally applied on print circle board and power supply for protect from electric short and thermal conductivity。 Specification :
viscosity ; 40,000 cps
Specific Gravity ; 1.25±0.03
Durometer hardness (ASTM D2240) ; 30 (Hardness Shore A)
Tensile strength(ASTM D412) ; 25.0 kg/cm2
Elongation(ASTM D412) ; 250%
Shrinkage ; 0.5%
Thermal conductivity ; 0.21 w/m-K
Volume resistivity ; > 3.0 x 1014 ohm-cm
Dielectric constant(60Hz) ; > 25 KV/mm
Operation process :
weight Take RTV-548 and C-548 B by 10:1 (weight ratio).
Defoaming place the mixture in vacuum vessel，kept vacuum lower than 100 mg Hg. Filler Be careful pouring silicone to the surface, avoid occur bubble
Harden Curing 60℃~ 80℃X 60min~30min.
