Silicone RTV-538 (Addition type) for electric print circle,power supply,di-bond use

RTV-538 (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 : viscocity 60,000 cps

Specific Gravity 1.06±0.03

Durometer hardness (ASTM D2240) 40 (Hardness Shore A)

Tensile strength(ASTM D412) 22.0 kg/cm2

Tear strength >20N/mm

Elongation(ASTM D412) 450%

Shringkage 0.1%

Thermal conductivity 0.21 w/m-K

Volume resistivity > 3.0 x 1014 ohm-cm

Dielectric constant(60Hz) > 25 Kv/mm

Heat on lost < 0.2%

Operation process : weight Take RTV-538 and C-538 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 container, avoid Occur bubble

Harden Curing 80℃X 30min.