Fine parlon vs "coarse" PVC?

[Potassiumchlorate]

Im trying to "tune" my stars better, as you might have seen from some other threads.

 

I have noticed that my PVC is rather "coarse"; its <125µm, but every particle is nevertheless clearly visible to the eye. My parlon on the other hand is airfloat.

 

Now i know that PVC is usually used together with chlorates and parlon with perchlorates. This is supposed to be due to the fact that chlorates are better chlorine donors than perchlorates and also more reactive oxidizers. PVC is also cheaper than parlon.

 

But never mind the costs. Wouldn't, say, a blue chlorate star with airfloat parlon burn both faster and with a clearer flame than one with "coarse" PVC as complementary chlorine donor?

Edited February 5, 2012 by Potassiumchlorate

[WSM]

Im trying to "tune" my stars better, as you might have seen from some other threads.

I have noticed that my PVC is rather "coarse"; its <125µm, but every particle is nevertheless clearly visible to the eye. My parlon on the other hand is airfloat.

Now i know that PVC is usually used together with chlorates and parlon with perchlorates. This is supposed to be due to the fact that chlorates are better chlorine donors than perchlorates and also more reactive oxidizers. PVC is also cheaper than parlon.

But never mind the costs. Wouldn't, say, a blue chlorate star with airfloat parlon burn both faster and with a clearer flame than one with "coarse" PVC as complementary chlorine donor?

 

Experiment.

 

Try them both on a small scale and compare them side by side on the ground and in the air (and report back to us). Looking forward to the report...

 

WSM

[Potassiumchlorate]

OK.

[50AE]

From my experience, PVC is better suited for chlorates, because it tends to slow the burn rate. Parlon on the other hand permits the comp to burn much faster. PVC would be a trouble for perchlorate, especially when present in high quantity. Chorate keeps up with its reactivity.

 

IF you are curious, check metallic fueled formulas like Baechle, which have 18-20% parlon in them. Try to replace it with PVC and see

[Potassiumchlorate]

One of my favourite metallic compositions is Bleser Red Mg, which uses both parlon and PVC but no chlorates or perchlorates.

 

In that case the burn rate is pretty high anyway, thanks to the precense of 28% <63µm Mg.

[petroleum]

I have the the same situation like KClO3. My parlon is airfloat (info from seller <100 micron), but PVC is somewhat coarse. When I started to develop my new star system (Modifications of Shimizu brilliant stars, later was changed by Karlos: KClO4/Ba,Sr nitrate (or CuO,CaCO3,cryolite)/MgAl/parlon/phenolic resin/charcoal) I had some problems with burning rates of the comps using different Cl donors (PVC: burning rate is lazy; parlon (<100 micron): faster (sometimes too fast (depending of mesh of MgAl and ratios of oxidizers); saran (625 mesh): burning rate is too fast). So, I tune my KClO4/MgAl colored star formulas changing the mesh of MgAl and ratios of oxidizers. I settled on using of parlon and MgAl -180 mesh. Edited February 6, 2012 by petroleum

[FREAKYDUTCHMEN]

My experience with "coarse" PVC is pretty bad, stars didn't even ignite.

With fine PVC it performed just as nice as with parlon.

[Dean411]

I have been using PVC with great success myself and prefer it over the price of parlon.

[pyrojig]

Saran is a good sub for parlon .

[Dean411]

In most cases I agree except if parlon is being used as the binder

[dagabu]

Saran is a good sub for parlon .

 

Just have to use more...

 

-dag

[Potassiumchlorate]

I don't know any source for saran in Europe. But the "coarse" PVC I have works very well in stars with high Mg content.

[bigbuck]

where can you even buy pvc? i cannot find it anywhere

[OldMarine]

Pyrochemsource has it for $7 per lb.

http://www.pyrochemsource.com/Chemicals-P_c24.htm

[dagabu]

http://www.skylighter.com/polyvinyl-chloride-powder.htm

 

http://www.pyrochemsource.com/PVC-Powder-PVC.htm

[bigbuck]

thank you