[Noisebridge-discuss] conductive paint and inks

[kristinneidlinger]

hi!

I just came from the printed electronics conference, and a company was
showing their washable conductive ink. It is alcohol based, not water
based. They only do large orders, but thought this might help.



On Fri, Nov 9, 2012 at 2:49 PM, Henner Zeller <h.zeller at acm.org> wrote:

> On 9 November 2012 12:56, rachel lyra hospodar <rachelyra at gmail.com>wrote:
>
>> hey all,
>>
>> i am contemplating some experiments with conductive inks and am curious
>> if anyone has any anecdata to share?  My ultimate goal is to silkscreen
>> circuitry onto fabric.  My main reference is here,
>> http://www.kobakant.at/DIY/?p=**634 <http://www.kobakant.at/DIY/?p=634>and my google-fu is strong, so I am mostly looking for words of
>> wisdom/experience from actually working with anything similar.  Also having
>> a SUPPLIER that is willing to sell small quantities of the stuff in
>> question is kind of important.  I am also extra curious if copper-based
>> inks change their conductive properties over time (from tarnishing?) the
>> way that copper-based fabrics seem to.
>>
>
> Another thing that went through my mind when playing with a similar
> thought (so: no shareable anecdote but idea to test), was to start with a
> probably bad conductor (carbon based ink ?) that is easily printed with a
> silkscreen process. Then proceed with coating this in a second round with a
> better conductor using a galvanic process, with copper (maybe with gold as
> third step to have a shiny and non-corrosive surface - but the chemicals
> (and metal of course) is expensive). Of course, the devil is in the detail:
> the thin metal will probably break easily (still there is the carbon thing
> below as back-up). And submerging fabric in Copper(II)sulfat is probably as
> well potentially problematic.
>
> -h
>
>
>> R.
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