In Led encapsulation, print circle board and LCD process, the surface needs correctly protection from heat and dust. Besides, in mobile phone , LCD monitor or plastic and metal surfaces, PSR-8211 act as protect and buffer layer between (-50) to 200℃ condition for long time operation.
Uncured properties :
PSR-8211A viscosity 4500 cps
special gravity 1.01
appearance transparency
PRS-8211B
viscosity 4500 cps
special gravity 1.01
appearance transparency
Properties after cured :
Volume resistivity > 5.0 x 1014 ohm-cm
Dielectric strength > 20 Kv/mm
refraction 1.407
Transmittance% 90% /450nm
Peel strength 0.1 kg/cm2
Operation process :
weight Take PSR-8211A and PRS-8211B by 1:1 (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 Heating 150℃X 2~3 min. then finish.
