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Author
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Topic: monofilament research project
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kyry
Member Posts: 3
From:Urbana, IL, USA
Registered: Mar 2004
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posted March 02, 2004 11:14 PM
  
Hi, I have this research project to do, where an important part is to extrude a 30 microns monofilament of ceramic powder. Using a Chemat Fiber extruder with a 30 microns die, and I always get phase separation and/or too thick fibers (thicker than the die). any ideas on improving the formulation? powder (micron size particles ) 38 wt%
Water 60 wt%
Methocel (Dow Chemical cellulose) 2 wt % thanks
IP: Logged |
zabielski
Senior Member Posts: 284
From:McHenry, IL USA
Registered: Nov 2002
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posted March 03, 2004 05:19 AM
So what is the average micron size of the powder your using? 38% by weight does not tell us anything.IP: Logged |
kyry
Member Posts: 3
From:Urbana, IL, USA
Registered: Mar 2004
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posted March 03, 2004 11:59 AM
hi, sorry for the confussion in the data. the average particle size is 1.59 microns thanks IP: Logged |
zabielski
Senior Member Posts: 284
From:McHenry, IL USA
Registered: Nov 2002
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posted March 04, 2004 06:18 AM
OK! So now, if the "average" partical size is 1.59 micron, find out what the "top cut" is. It sounds to me that the partical size "top cut" (largest particals relative to the average)is the cause of your problem. I think you need to do an analysis of the partical sizes available. You want a very controlled particle size. With the Lot # provided by your supplier - contact them for this information. Relate the problems your encountering, as I seriously think that the powder is perhaps trash. IP: Logged |
kyry
Member Posts: 3
From:Urbana, IL, USA
Registered: Mar 2004
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posted March 04, 2004 04:59 PM
thanks!IP: Logged |
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