---------------------- multipart/alternative attachment Bill Spurlock was nice enough to reply with the following to an inquiry I just made about the shape of the particles used in the Telfon powder variant he sells to the piano industry Obviously the claim that these particles are spherical are a bit overstated, yet they are a far cry from the sharped edged graphite particles. Telfon is inert to most everthing it would seem. The heat generated by friction in action centers is not enough to even make the stuff think about reacting. Anyways.. I hope this answers any questions anyone has about the shape of Teflon particles. RicB SpurlockTool@cs.com wrote: > Dear Richard, > > Thanks for your inquiry. The shape of the Teflon powder I sell could > probably best be described as odd-shaped blobs. Here is an electron > micrograph: > > [Image] > This is a very low molecular weight material with an average particle > size of 3 microns. The extremely small particle size and shape result > in a very tenacious presence once applied to leather. In other words, > it stays in the leather until the leather wears away. An interesting > side note: The exploding dye packs used in bank robbery cash bags use > a similar sized dry particle which the robber cannot entirely wash > off. Hope this info helps, > > Regards, > > Bill > > > In a message dated 5/23/03 3:03:44 PM Pacific Daylight Time, > Richard.Brekne@grieg.uib.no writes: > > > >> Hi Bill >> >> You no doubt do not remember me, but thats no biggie :) >> >> The reason I am writting is that there seems to be an arguement >> about >> the microscopic shape of the telfon powder you sell. Some say its >> fiberous, others crystaline, some say grandular, and finally I hear >> spherical. >> >> I would personally like to know whats what, and if you know of a >> microscopic picture I would be also very greatfull >> >> Thanks for whatever help you can provide >> >> RicB >> >> -- >> Richard Brekne >> RPT, N.P.T.F. >> UiB, Bergen, Norway >> mailto:rbrekne@broadpark.no >> http://home.broadpark.no/~rbrekne/ricmain.html >> http://www.hf.uib.no/grieg/personer/cv_RB.html > > > -- Richard Brekne RPT, N.P.T.F. UiB, Bergen, Norway mailto:rbrekne@broadpark.no http://home.broadpark.no/~rbrekne/ricmain.html http://www.hf.uib.no/grieg/personer/cv_RB.html ---------------------- multipart/alternative attachment --------------24A450D58D213A846B3B1B2F An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/6e/3e/c9/41/attachment.htm --------------24A450D58D213A846B3B1B2F A non-text attachment was scrubbed... Name: mp1200.gif Type: image/gif Size: 12454 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/17/24/9d/78/mp1200.gif --------------24A450D58D213A846B3B1B2F-- ---------------------- multipart/alternative attachment--
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