不知道按错哪个键就发了两个一样的贴，改电子用硅胶Master Sil 773 的介绍

PCB Conformal Coating cures tack free in less than 5 min.

September 9, 2009 - With ability to maintain low modulus over temperature range of -65 to +200°C, Master Sil 773 is formulated to provide protection to electronic circuitry in high humidity environments as well as upon exposure to shock and vibration. One part, ultra low viscosity silicone conformal coating can be applied by dipping, spraying, brushing. Coating offers volume resistivity of 1x1014 W-cm, dielectric strength of 25 kV/mm, dielectric constant of 3.3, 60 Hz and dissipation factor of 1x10-4.


原文：http://news.thomasnet.com/fullstory/829403