Thermally and Electrically Conductive Elastomers
Thermally and Electrically Conductive Elastomers
(OP)
Just doing some brainstorming...If you were to make an elastomer thermally and electrically conductive, how would you do it? Thanks.
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Thermally and Electrically Conductive Elastomers
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RE: Thermally and Electrically Conductive Elastomers
I guess that I would try mixing your material copper or aluminum powder.
You will have to do a lot of experimenting since, the metal will have an effect on the elastomer.
I have molded ABS w/aluminum dust for a temperature sensing bulb. Sorry I don't remember the percentage. But it worked!
RE: Thermally and Electrically Conductive Elastomers
2) For a bit more conductivity, add aluminum flake, perhaps with carbon black or metal powder to provide some flake-to-flake connection.
3) For significant conductivity, you need conductive fiber (graphite or metal), plus metal/graphite flake or powder. Of course, you will lose some elongation.
For special purposes, aluminum-coated glass fiber has been used in FRP, but not in elastomers, to my knowledge.
RE: Thermally and Electrically Conductive Elastomers
They also have conductive silicone caulking, Electrically Conductive Adhesives,Coatings and greases:
http://www.eccosorb.com/catalog/eccoshield/index.asp
RE: Thermally and Electrically Conductive Elastomers
It might work for your application. It is horendously expensive. DSM have some technology in it's use
Regards
pat
RE: Thermally and Electrically Conductive Elastomers
Of the companies that make these, here is one:
http://www.irmicrolink.com/zoflex.html
RE: Thermally and Electrically Conductive Elastomers
“Conductive Polymer Coatings for Anodes in Aqueous Electrowinning,” A.M. Alfantazi and R.R. Moskalyk, pp. 49-55. (July 2003). http://doc.tms.org/ezMerchant/prodtms.nsf/ProductLookupItemID/JOM-0307-49/ [click on PDF for first page]
“This article discusses the potential application of electrically conductive polymers as protective coatings for permanent lead anodes employed in aqueous electrowinning processes. Also presented are results from a preliminary study of the performance of two intrinsically conductive polymers (polyaniline and poly 3,4,5-trifluoro-phenylthiophene [TFPT]) under mild copper electrowinning conditions as conductive and protective coatings on anodic surfaces. The laboratory results indicated that using lead alloy anodes coated with TFPT merits continued research.”
Polyaniline is unusual in that it is ~nonconductive when prepared in alkaline solution, but its conductivity increases by orders of magnitude when prepared at low pH.
“Table I. Conductivities of Some Conductive Polymers*
Polymer Conductivity (S/cm)
Polyacetylene 102–105 (stretched)
Polythiophene 102–104
Polypyrrole 10–103 (stretched)
Poly(p-phenylenevinylene) 103
Polyaniline 10–150 (heated), 102–103
Poly(2,3-ethyldioxythiophene) 10–780 (in nanopores)”
For comparison, metallic lead has a conductivity of 4.8x104 S/cm.
I don’t know which of these are considered elastomers, though.
*Data are from ‘Electrically Active Polymers and Their Application,’ Mary E. Galvin, JOM, vol. 49, no. 3, pp. 52-55 (1997).
RE: Thermally and Electrically Conductive Elastomers
Please see my reply under Polymer engineering FAQ
FAQ334-704
Thanks!
:)
RE: Thermally and Electrically Conductive Elastomers
RE: Thermally and Electrically Conductive Elastomers
RE: Thermally and Electrically Conductive Elastomers
Conductance in siemens, S, is the reciprocal of resistance in ohms (S = mho).
Conductivity units: S/cm = 1/ohm-cm, so S/cm = 10-6/micro-ohm-cm