Date: Fri, 10 Apr 2020 15:32:52 -0700
Reply-To: Alistair Bell <albell@SHAW.CA>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Alistair Bell <albell@SHAW.CA>
Subject: Re: Electrical connection prep.
In-Reply-To: <CAG9R2yAcR6qsXgpOsOWv8hFpivqyYJhf-hJ+gYG-gbvLZoq44A@mail.gmail.com>
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Mark,
I mentioned de-oxit D5 as a contact cleaner. Seems to work for me , well you know I have no real proof.
Hard to clean inside female spade connectors. I try little folded bits of fine wet and dry paper. Purple scotch Brite, little wire brush.
I’d like to try those glass fiber pens , haven’t yet.
Alistair
ps I avoid dipping connectors into any kind of acid to remove tarnish.
> On Apr 10, 2020, at 3:10 PM, Mark Belanger <mbelanger@gmail.com> wrote:
>
> Fascinating stuff. I can think of number of uses for this stuff.
>
> Though, this begs the question, what is the best way to clean contacts? A
> combo or mechanical and chemical, I'd imagine.
>
>
> -MB
>
>
> On Fri, Apr 10, 2020 at 12:33 PM Neil N <musomuso@gmail.com> wrote:
>
>>> As I understand, stabilant ain’t as much a cleaner as a contact
>> enhancer. ....
>>
>> Thanks for that link Alistair. That's an important difference to note;
>> I see what you mean:
>>
>> ======
>>
>> " Stabilant 22 is an electrically active material which stays resident
>> within a contact-pair, there enhancing conductivity without causing
>> electrical leakage between adjacent contacts. Although Stabilant 22
>> does have a detergent action it is not sold as a cleaner, just as it
>> has a good lubricant action but is not sold as a lubricant. Stabilant
>> 22 is used to increase the reliability of contacts. Tenfold to one
>> hundred-fold increases are not unusual. At the present time it is used
>> in many different types of contacts, including card-edge connectors,
>> D-type connectors, MIL-spec connectors, signal switches, etc.
>>
>> Stabilant 22 is an initially non-conductive amorphous-semiconductive
>> polyoxyethylene-polyoxypropyline block polymer with a molecular weight
>> of about 2800 that, when used in thin films between contacts, acts
>> under the influence of the electrical field and switches to a
>> conductive state. The electric field gradient at which this occurs is
>> established during manufacture so that the material will remain
>> normally non-conductive. Its switching speed is too slow to allow it
>> to be used in the more traditional semiconductor applications;
>> however, this means that signals at frequencies substantially above
>> five cycles per hour will not be modulated by the switching
>> characteristics of Stabilant 22.
>>
>> Thus, when applied to electromechanical contacts, Stabilant 22
>> provides the wide-bandpass connection reliability of a soldered joint
>> without bonding the contacting surfaces together!
>>
>> In its undiluted form at room temperature, Stabilant 22 has the
>> viscosity of medium-weight motor oil, although it thins out with
>> increasing temperature, starting to decompose into the two polymers it
>> is formed from at about 240° Celsius. It has a very low vapor pressure
>> and therefore there is no appreciable loss of material from
>> evaporation. It has been in some applications for more than fifteen
>> years without renewal, and it is probably safe to say that in the
>> majority of cases, the equipment on which it is used will be retired
>> as obsolescent before the Stabilant must be renewed. "
>>
>>
>>
>> --
>> Neil n
>>
>> VE7TBN
>>
>> 1988 Westy 50º ABA swap: https://tinyurl.com/yap5hpwt
>>
>> 1981 Westy 15º ABA swap: https://tinyurl.com/y9n4xob8
>>
>> VAG Gas Engine Swap Group <http://tinyurl.com/khalbay>
>>
>
>
> --
> ________________________________________________________________________
> Mark Belanger - mbelanger@gmail.com
| 
