nigelt
Mechanical
- Jan 10, 2003
- 50
I have noted concerns vis-a-vis outgassing in space/vacuum apps, when silicone based materials are used in enclosure components. I have some questions on this w.r.t. "sealed" enclosures, let's say IP'X'6 & above in the typical -20 +60 degC env...
1 - what, in the bigger picture is the deliterious effect please? I note mention of optics and I'm curious about that, but what about electronics in general.
2 - silicone keypads are often used in "sealed" electronics. I am aware that there are problems with poorly conditioned, low quality, silicone, in respect of switch failure, but are there other farther reaching effects?
3 - what if the sparkys want to use RTV to secure large components in a "sealed" enclosure? I think this is a different question perhaps, as the products of the curing process also come into the mix. I'm sure these continue to release over time. Aren't there 2 types?
Thanks in advance for any input or pointers to websites I should have found for myself!!
Nigel
"You will master any feeling of inadequacy you may be having"
....from my fortune cookie @ the buffet!
1 - what, in the bigger picture is the deliterious effect please? I note mention of optics and I'm curious about that, but what about electronics in general.
2 - silicone keypads are often used in "sealed" electronics. I am aware that there are problems with poorly conditioned, low quality, silicone, in respect of switch failure, but are there other farther reaching effects?
3 - what if the sparkys want to use RTV to secure large components in a "sealed" enclosure? I think this is a different question perhaps, as the products of the curing process also come into the mix. I'm sure these continue to release over time. Aren't there 2 types?
Thanks in advance for any input or pointers to websites I should have found for myself!!
Nigel
"You will master any feeling of inadequacy you may be having"
....from my fortune cookie @ the buffet!