Non-conductive-removeable-glue ?

Jon Danniken wrote:
"Skybuck Flying" wrote:
Hello,

I have a question for you:

Is there a glue that can be used to glue together electronics without the
glue becoming conductive after a while ?

Silicone.

Jon



Not silicone! (AKA RTV)

The stuff exudes/outgasses acetic acid as it dries, which corrodes
metals. The corrosion "grows" and puts resistive paths between
reasonably close adjacent conductors. CBers though it was hot **** for
weatherproofing coax connectors exposed to the elements when it first
became commercially available. 6 months or so later, they'd start
getting lousy SWR problems. Upon opening the connections, they'd find
white crap all over the interior of the connector bodies.

There is a special version of silicone sealant/gasket replacement sold
in automotive parts places (Permatex is one brand) that does work, it's
orange and says "safe for oxygen sensors".

Skybuck Flying wrote:
Hello,

I have a question for you:

Is there a glue that can be used to glue together electronics without the
glue becoming conductive after a while ?

(Some glue's appear to become conductive after exposure to heat, moisture in
air, and electricity (?))

Also it would be a big plus if the glue can be removed with water and soap
or any other means...

Bye,
Skybuck.



Attaching electrodes to your genitals again?

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In article , "nobody " wrote:
Jon Danniken wrote:
"Skybuck Flying" wrote:
Hello,

I have a question for you:

Is there a glue that can be used to glue together electronics without the
glue becoming conductive after a while ?

Silicone.

Jon



Not silicone! (AKA RTV)

The stuff exudes/outgasses acetic acid as it dries, which corrodes
metals. The corrosion "grows" and puts resistive paths between
reasonably close adjacent conductors. CBers though it was hot **** for
weatherproofing coax connectors exposed to the elements when it first
became commercially available. 6 months or so later, they'd start
getting lousy SWR problems. Upon opening the connections, they'd find
white crap all over the interior of the connector bodies.

There is a special version of silicone sealant/gasket replacement sold
in automotive parts places (Permatex is one brand) that does work, it's
orange and says "safe for oxygen sensors".

There is also "blue", which I had recommended buying for safe
gas free use. It was a lot cheaper than other brands.
I have some white, most common, and I also have some black, these
from another manufacturer.
Never saw or had any problems of regular silicone 1 rtv.
I even tested it on a shiny copper board. No problems.
After a few hours any acedic gas is long gone after a short
time. I hear this corrosion guess all the time.
I have read many silicome reports and the one that said
rtv is microporous is OK with me. How else is the gas
going to escape. Long term use on my truck bolts,
confirmed rusting problems. It also requires moisture to firm up. It can
absorb humidity and cause corrosion after years. it also
can absorb and change colors after years.
I have used rtv on HV before it dried with no problem.

As far as Shoo glue ot Plummers Goop, they are my favorite for firm
holding, still with a little flexibility. Forget about taking it off.
Polyurathane is great for a firmer hold and stiffnes compared to rtv, but
it has problems with certain things. Takes a long time to cure.

greg

Sounds pretty good:

http://www.biosafe-inc.com/_tds/e6000_tds.pdf

It also says it's good for glueing stuff together that vibrates.

It also says it has dielectric strength 400v/mil ?

So I guess that means it is resistent against electric voltages/currents...
but for how long ?

Hmmmm.

Bye,
Skybuck.

Also my living room could get a bit moisture because of showering and gasses
and all that...

It also seems to have some water resistence...

It does mention some hazardness:

perchloroethylene

No idea what that is... could it cause cancer ?

Hmm

This link does have some slightly distrubing information:

http://www.epa.gov/chemfact/f_perchl.txt

"
Breathing perchloroethylene over longer periods of time can cause
liver and kidney damage in humans. Workers exposed repeatedly to large
amounts of PERC in air can also experience memory loss and confusion.
Laboratory studies show that PERC causes kidney and liver damage and cancer
in animals exposed repeatedly by inhalation and by mouth. Repeat exposure
to large amounts of PERC in air may likewise cause cancer in humans.
"

But maybe this is only for high dosis ?

Bye,
Skybuck.

"Skybuck Flying" wrote in message
b.home.nl...
Sounds pretty good:

http://www.biosafe-inc.com/_tds/e6000_tds.pdf

It also says it's good for glueing stuff together that vibrates.

It also says it has dielectric strength 400v/mil ?

So I guess that means it is resistent against electric
voltages/currents... but for how long ?

Hmmmm.

Bye,
Skybuck.

Actually now I am getting doubts.

The GigaWorks S750 has components which says: "400v" on it.

So it seems this glue is barrely enough to withstand it.

Example of such 400v components (see the little blue one):

http://members.home.nl/hbthoupperman...lueGoesBad.htm

(Picture2)

Bye,
Skybuck.

In article me.nl,
Skybuck Flying wrote:

Actually now I am getting doubts.

The GigaWorks S750 has components which says: "400v" on it.

So it seems this glue is barrely enough to withstand it.

The glue's voltage rating is 400 volts per mil. That is, every
one-thousandth of an inch of glue can "stand off" 400 volts. The
thicker the glue, the greater the voltage which can be withstood.

[I'd suggest that the fact that you weren't aware that insulation
resistances are given in volts-per-thickness, rather than just volts,
means that you have rather too little experience and basic
understanding to be messing around inside appliances and computers
that have high voltages present... but I don't suppose you'd listen.]

--
Dave Platt AE6EO
Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!

"Dave Platt" wrote in message
...
In article me.nl,
Skybuck Flying wrote:

Actually now I am getting doubts.

The GigaWorks S750 has components which says: "400v" on it.

So it seems this glue is barrely enough to withstand it.

The glue's voltage rating is 400 volts per mil. That is, every
one-thousandth of an inch of glue can "stand off" 400 volts. The
thicker the glue, the greater the voltage which can be withstood.

Suppose the thickness of the glue is one inch and it's under 400 volts
during 8 hours a day.

How long would it take before the glue becomes fully conductive ?

Bye,
Skybuck.

In article e.nl,
Skybuck Flying wrote:

The glue's voltage rating is 400 volts per mil. That is, every
one-thousandth of an inch of glue can "stand off" 400 volts. The
thicker the glue, the greater the voltage which can be withstood.

Suppose the thickness of the glue is one inch and it's under 400 volts
during 8 hours a day.

How long would it take before the glue becomes fully conductive ?

Pick one or more of the following answers.

[1] That's a silly question. Nobody in their right mind would ever
bother to use a 1-inch layer of this glue in that way.

[2] Never. "Fully conductive" implies perfect conductivity (zero
resistance) and there's no evidence at all that this sort of
synthetic rubber ever develops superconductivity under any
conditions whatsoever.

[3] Immediately. "Fully conductive" means "as conductive as it will
become", and this sort of rubber's conductivity doesn't change
significantly as it cures.

[4] Irrelevant. The voltage rating of a 1-inch layer is (in theory)
400,000 volts. This is higher than the breakdown voltage that you
would be likely to sustain over surface of the block, which is in
contact with air (and the humidity in the air), dirt, finger
grease, pollen, spider webs, and other local contaminants. Thus,
the resistance behavior of the *system* isn't limited by the
rubber itself, but by the system it's installed in.

[5] Impossible to determine. The rubber's bulk resistivity will
change over time, as the rubber is degraded by environmental
factors. In particular, it can be broken down by ultraviolet
light, and once broken down it could probably start absorbing some
amount of moisture from the air, and its insulation properties
will be reduced. The time-to-failure will depend on the operating
environment - if kept in a dark dry place it'd last quite a bit
longer than if kept outdoors in the Amazon. The information
given at http://tinyurl.com/ykp97m explains at least one of these
effects.

[6] Longer than your lifetime.

--
Dave Platt AE6EO
Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!

Skybuck Flying wrote:
"Dave Platt" wrote in message
...
In article me.nl,
Skybuck Flying wrote:

Actually now I am getting doubts.

The GigaWorks S750 has components which says: "400v" on it.

So it seems this glue is barrely enough to withstand it.
The glue's voltage rating is 400 volts per mil. That is, every
one-thousandth of an inch of glue can "stand off" 400 volts. The
thicker the glue, the greater the voltage which can be withstood.

Suppose the thickness of the glue is one inch and it's under 400 volts
during 8 hours a day.

How long would it take before the glue becomes fully conductive ?

Bye,
Skybuck.


Skybuck, tnere is an easier answer.

If you remove the subwoofer speaker from the cabinet, then build
an identical (tuned port or whatever) wooden cabinet, and move
the subwoofer over to that, the remaining amplifier components
will no longer be in a noisy, vibration prone environment.
As a result, you will no longer need to pour glue all over
the amplifier components.

Paul