dagabu Posted August 5, 2011 Share Posted August 5, 2011 One last shot here, PM me today if you want some resin, i will be picking it up on Sunday and shipping it a week later. -dag Link to comment Share on other sites More sharing options...
oldguy Posted August 5, 2011 Author Share Posted August 5, 2011 Better jump on this folks. Almost impossible to find.Very spendy elsewhere, if you do find it.Soluable slowly in 90% Alc.Faster in Laquer thinner.The slow drying laquer thinner gives you more work time. Link to comment Share on other sites More sharing options...
Mumbles Posted August 5, 2011 Share Posted August 5, 2011 I just got mine today. It smells vaguely familiar, but definitely like pyro candy. Not as good as red gum, but it is going to do good things. Link to comment Share on other sites More sharing options...
burningRNX Posted August 5, 2011 Share Posted August 5, 2011 I like rolling with this one, non sticky, (alcohol solvent)Perfect for rolling microstars/core's starting from 1 mm And water sensitive compositions! Link to comment Share on other sites More sharing options...
BJV Posted August 5, 2011 Share Posted August 5, 2011 Hi All,I received my 10lbs of phenolic resin today.I took a few chunks and ground them in mycoffee grinder. It sure powders up easily. It dissolves very fast in denatured alcohol. In the morningI am going make a small batch of dragon eggs withthis mixture. Will report back later. BJV Link to comment Share on other sites More sharing options...
oldguy Posted August 21, 2011 Author Share Posted August 21, 2011 Hi All,I received my 10lbs of phenolic resin today.I took a few chunks and ground them in mycoffee grinder. It sure powders up easily. It dissolves very fast in denatured alcohol. In the morningI am going make a small batch of dragon eggs withthis mixture. Will report back later. BJV How did the dragon eggs turn out...........? Just found this info below. I wish it had the % included Aqueous formaldehyde is added to solid phenol. Next glacial acetic acid is added and the mixture is stirred. Concentrated hydrochloric acid is then mixed with the resulting solution. After a few minutes, the solution becomes cloudy and the red solid phenol-formaldehyde copolymer forms. The polymerization occurs by electrophilic aromatic substitution between the ortho and para positions of phenol and protonated formaldehyde. The resulting polymer is made by methylene bridges between phenol molecules Link to comment Share on other sites More sharing options...
BJV Posted August 21, 2011 Share Posted August 21, 2011 Hi Oldguy,I have not had a whole lot of time to play withthe phenolic resin, getting ready for a shoot in Sept.But I did try a small batch of dragon eggs bound withphenolic resin dissolved in denatured alcohol, it killed the effect.I am waiting for more information from the person I bought the phenolic resin from.Will keep you posted.BJV Link to comment Share on other sites More sharing options...
oldguy Posted August 21, 2011 Author Share Posted August 21, 2011 By killed the "effect" do you mean they did not "crackle"? Link to comment Share on other sites More sharing options...
BJV Posted August 21, 2011 Share Posted August 21, 2011 By killed the "effect" do you mean they did not "crackle"? Yes they don't crackle, the phenolic resin works well as a binder,the micro stars (dragon eggs) did get very hard. Did you buy yourphenolic resin from Jim Widmann?BJV Link to comment Share on other sites More sharing options...
oldguy Posted August 21, 2011 Author Share Posted August 21, 2011 I bought 10# from Jim & 2# from another source. Link to comment Share on other sites More sharing options...
Peret Posted August 28, 2011 Share Posted August 28, 2011 I'm having some trouble ball-milling it. Once a bit of it gets down to air float it clumps in the mill and not a lot more grinding happens - the mill goes awful quiet. I stopped to investigate after that had been going on an hour or so and found the media glued together in quite hard lumps. It took some firm tapping to break the lumps apart but then the resin fell into dust. On sifting, about half of it was down to -100 mesh, most of the rest was down to 1/8 to 1/16 inch and there were some large chunks that didn't seem to have milled at all. From now on I'll just stop and sift it every hour or so and return the larger stuff for more milling. It's very important to screen this stuff to remove the nails and bits of glass that are embedded in some of the chunks Coffee grinders beware. Link to comment Share on other sites More sharing options...
FrankRizzo Posted August 28, 2011 Share Posted August 28, 2011 Nails and bits of glass?! The stuff I got from Jim was translucent Amber and contained absolutely nothing. A couple of smacks with a hammer, and coffee milling the resultant chunks has worked well for me. Link to comment Share on other sites More sharing options...
moondogman Posted August 28, 2011 Share Posted August 28, 2011 Pot Perch 73, Phenolic resin 27 makes a strong propellant........ As in strong enough for rocket fuel??Steve Link to comment Share on other sites More sharing options...
dagabu Posted August 28, 2011 Share Posted August 28, 2011 Nails and bits of glass?! The stuff I got from Jim was translucent Amber and contained absolutely nothing. A couple of smacks with a hammer, and coffee milling the resultant chunks has worked well for me. Yup, mine too. Pure with no residue after being dissolved. -dag Link to comment Share on other sites More sharing options...
oldguy Posted August 28, 2011 Author Share Posted August 28, 2011 As in strong enough for rocket fuel??Steve I tamped a small thin walled cardboard tube with that mix. Stuck it in some soft dirt & lit it on top with visco to see what it would do.Flame & resulting gas tipped over the tube and pushed it around the dirt lot fairly hard.I reduced the P-resin amount after that, so it wasn't as forcefull. Link to comment Share on other sites More sharing options...
oldguy Posted August 28, 2011 Author Share Posted August 28, 2011 Nails and bits of glass?! The stuff I got from Jim was translucent Amber and contained absolutely nothing. A couple of smacks with a hammer, and coffee milling the resultant chunks has worked well for me. Mine friom Jim is also translucent amber & contained (as far as I know - so far ) no foreign objects.I used a mortor/pestle to reduce some to powder, no issues.I used a coffee bean mill to reduce more to powder, no issues.Used a SS blender & disolved a fair amount poured into a clear glass jar & sealed with a tight lid, no issues. Link to comment Share on other sites More sharing options...
Peret Posted August 28, 2011 Share Posted August 28, 2011 I must have been unlucky then, because the first two pounds of Jim's resin I milled down contained two one-inch wire nails, a small screw and a triangle of window glass 1 inch on a side. BTW, mine is half large translucent chunks and half loose gravelly pieces and I've been working with the gravel. The large transparent chunks look pure enough. I won't be ball-milling any more of it, it's a total PITA. The unmilled residue after the first hour's milling was pretty much still unmilled six hours later. It's coated my media thickly and is really hard and messy to remove. Coffee grinder for me in future. Link to comment Share on other sites More sharing options...
dagabu Posted August 28, 2011 Share Posted August 28, 2011 Coffee grinder is easy, sounds like you got the floor sweepings -dag Link to comment Share on other sites More sharing options...
Peret Posted August 29, 2011 Share Posted August 29, 2011 It smells vaguely familiarThe smell is what we in the electronics biz call a "brown smell", the odor of the smoke that rises from a burned out component on a circuit board. 1 Link to comment Share on other sites More sharing options...
oldguy Posted August 29, 2011 Author Share Posted August 29, 2011 The smell is what we in the electronics biz call a "brown smell", the odor of the smoke that rises from a burned out component on a circuit board. Peret, You are on the money there. This type resin (or close) is used in a lot of circuit boards, etc. Link to comment Share on other sites More sharing options...
oldguy Posted August 29, 2011 Author Share Posted August 29, 2011 (edited) From big chunks, crushed to 3/4 inch minus, then fed into a stainless steel commercial blender.-30 to + 100 mush in minutes Edited August 29, 2011 by oldguy Link to comment Share on other sites More sharing options...
Pyrophury Posted August 29, 2011 Share Posted August 29, 2011 (edited) I have some phenolic resin from a different source, but it has a pink tinge when ground into a fine powder which is extremely light and fluffy. I've used it to roll core-less crackling microstars with 3% phenolic resin bound with bio-fuel (denatured alcohol) and they seem to work rather well... http://www.pyrobin.com/files/de.wmv, although they are harder to ignite than those bound with NC lacquer. http://www.pyrobin.com/files/de2.jpg Well primed though... http://www.pyrobin.c...agon%20eggs.wmv. Edited August 29, 2011 by Pyrophury Link to comment Share on other sites More sharing options...
Peret Posted August 29, 2011 Share Posted August 29, 2011 Not sure how your powder comes to be white, oldguy. Mine is orange, and bears a disturbing resemblance to ground-op potassium dichromate. Link to comment Share on other sites More sharing options...
FrankRizzo Posted August 29, 2011 Share Posted August 29, 2011 Peret - Below a certain mesh, it starts to become off-white. Link to comment Share on other sites More sharing options...
Mumbles Posted August 30, 2011 Share Posted August 30, 2011 The odor is just that of a small amount of free phenol. I confirmed it against the pure phenol in the lab. Very faint, but it's there. Link to comment Share on other sites More sharing options...
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