For organic Bengals shellac undoubtedly is the best, but what about stars, especially those with metal fuels? Opinions?
Shellac or red gum?
Started by Potassium chlorate, Sep 20 2010 03:46 PM
4 replies to this topic
#1
Potassium chlorate
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Posted 20 September 2010 - 03:46 PM
"This salt, formerly called hyperoxymuriate of potassa, is
used for sundry preparations, and especially for experimental
fire-works."
Dr. James Cutbush
used for sundry preparations, and especially for experimental
fire-works."
Dr. James Cutbush
#2
BrightStar
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Posted 20 September 2010 - 07:14 PM
It took me a while to find a reference for this one but it's Shimizu Table 10.
Shimizu Table 10 - The comparison of burning rates between Shellac and Accroides Resin
-------- Burning Rate -------
Oxidiser ------- Shellac (20%) --- Accroides resin (20%)
NH4ClO4 -------- 1.6 mm/sec ------ 2.0mm/sec
KClO3 ---------- 1.3 ------------- 2.5
KClO4 ---------- incombustible --- 1.5
This demonstrates quite neatly why you tend to see Shellac in chlorate stars and Red Gum in perchlorate stars.
Shimizu Table 10 - The comparison of burning rates between Shellac and Accroides Resin
-------- Burning Rate -------
Oxidiser ------- Shellac (20%) --- Accroides resin (20%)
NH4ClO4 -------- 1.6 mm/sec ------ 2.0mm/sec
KClO3 ---------- 1.3 ------------- 2.5
KClO4 ---------- incombustible --- 1.5
This demonstrates quite neatly why you tend to see Shellac in chlorate stars and Red Gum in perchlorate stars.
#3
Potassium chlorate
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Posted 20 September 2010 - 07:27 PM
Oh, so that's the whole difference then? Great to know.
I think I have that text myself somewhere, but I have a tendency to be a little bit absent-minded.
Thank you.
I think I have that text myself somewhere, but I have a tendency to be a little bit absent-minded.
Thank you.
"This salt, formerly called hyperoxymuriate of potassa, is
used for sundry preparations, and especially for experimental
fire-works."
Dr. James Cutbush
used for sundry preparations, and especially for experimental
fire-works."
Dr. James Cutbush
#4
Mnemotron
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Posted 21 September 2010 - 03:10 PM
It took me a while to find a reference for this one but it's Shimizu Table 10.
Shimizu Table 10 - The comparison of burning rates between Shellac and Accroides Resin
-------- Burning Rate -------
Oxidiser ------- Shellac (20%) --- Accroides resin (20%)
NH4ClO4 -------- 1.6 mm/sec ------ 2.0mm/sec
KClO3 ---------- 1.3 ------------- 2.5
KClO4 ---------- incombustible --- 1.5
This demonstrates quite neatly why you tend to see Shellac in chlorate stars and Red Gum in perchlorate stars.
So, with kclo4 shellac does not burn?.Really strage
#5
MDH
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Posted 21 September 2010 - 07:34 PM
It will burn if another fuel is added to assist in its decomposition. I have made microstars out of KClO4 and shellac for years.
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