15 Aug
2009
15 Aug
'09
10:56 a.m.
dwight elvey wrote:
here's what's in it from the material safety data sheet on Dow's site:
http://www.dowcorning.com/applications/search/products/details.aspx?prod=01…
CAS Number Wt % Component Name
68037-74-1 > 60.0 Dimethyl, methyl silicone resin
7631-86-9 7.0 - 13.0 Silica, amorphous
70131-67-8 5.0 - 10.0 Dimethyl siloxane, hydroxy-terminated
Description
Silicone-based compound, moderate consistency.
Lubricant suitable for electrical connectors and joints.
And it listed as having high electrical resistance.
This is abslutely not true. I use DC#4 and it works
great. I is often used
in high voltage applications and an insulator so I doubt it is conductive
in any way.
I posted about experiments I've done while at Intel, years ago.
It improved gold on gold contacts from 10-15 milliohms to less than
2 milliohms. This all while being non-conductive.
Dwight
We use DC#4 on our classic computerized (to stay on topic) pinball games, and we
find too that contact resistance appears to drop after application. We are dealing with
medium current (6 - 15A) through regular Molex pins and the connectors are noticably
cooler after a dab of DC#4 is added.
We apply it to connectors and plugs and the results are longer life and reduced
insertion/extraction resistance as well.
I have searched for documents from Dow Corning to support this as I do recall seeing
something to that effect when I first found out about this great compound about ten years
ago. No luck so far!
John :-#)#