Polyvinylsiloxane (PVS) Info
Polyvinylsiloxane (PVS) Info
(OP)
Normally polyvinylsiloxane or polyvinyl siloxane (PVS) is used in dental/forensic applications as an "impression material". I am looking for a material with similar properties that might be used in aerospace applications, as many of the sites I have found limit the sale of PVS to dentists. I cannot find any material properties for this material, and was hoping someone would have familiarity with this compound that can offer some assistance.
We are attempting to use this material to create an "epoxy dam" when potting circuit boards into a housing. We are running 26awg wires through the dam, and the PVS seems to work great as a dam and a strain relief for the wires. We like the fast (20s) mix time, fast (10min) cure time, putty-like (very high viscosity) consistency, and silicone-like pliability.
Our negative experience with RTV is the relatively low viscosity and extended cure time when compared to PVS. Can anyone suggest an alternate or similar material for aerospace use? Does anyone have material properties of PVS?
We are attempting to use this material to create an "epoxy dam" when potting circuit boards into a housing. We are running 26awg wires through the dam, and the PVS seems to work great as a dam and a strain relief for the wires. We like the fast (20s) mix time, fast (10min) cure time, putty-like (very high viscosity) consistency, and silicone-like pliability.
Our negative experience with RTV is the relatively low viscosity and extended cure time when compared to PVS. Can anyone suggest an alternate or similar material for aerospace use? Does anyone have material properties of PVS?
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RE: Polyvinylsiloxane (PVS) Info
RE: Polyvinylsiloxane (PVS) Info
"Art without engineering is dreaming; Engineering without art is calculating."
Have you read FAQ731-376: Eng-Tips.com Forum Policies to make the best use of Eng-Tips Forums?
RE: Polyvinylsiloxane (PVS) Info
I expect one will have a rubbery compound that is a putty that cures quickly. Atofina (whatever they call themselves now) and DuPont would be other worthy channels of investigation.
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