Ivan Kminek
Muse
- Joined
- Jun 15, 2011
- Messages
- 906
The heat released by 2 of the paint chips was higher than that of perfect thermite, so if that is the benchmark, it wasn't "quite low". "Vigorous", as I understand it, does not only refer to the heat release (energy density) but also, or more so, to the speed of reaction, which is power per mass unit, and indeed the DSC trace charts show that the paint reacted with much higher power peaks (Fig. 19: range from about 10 to 24 W/g) than the nano-thermite referenced from the Tillotson paper (Fig. 29: about 5 W/g).
So if the authors describe the reaction of the chips as "vigorous", I am not inclined to deny that.
You are of course right with all the rest: The heat release in a range from 1.5 to 7.5 kJ/g, and the ignition point around 430°C aren't untypical for a number of materials where organics and inert stuff are mixed. I once calculated that humans, despite consisting to 65% of inert water, have a net energy density around 8-10 kJ/g, so average human tissue would release mire energy in a DSC than those paint chips did.
But all this detracts from the question if anyone has made any progress towards identifying the particular paint that the chips consisted of.
You are right concerning the "quite low released heat", sorry for this and apologies to SkepticOfLies. I was trying to say that the released heat was nothing extraordinary and even burning of organic binder present in mere ca 10-20 % concentration in the chips could produce the same heat as pure thermite. (Ergh... it seems to be almost impossible to completely avoid any mention of nanothermite even here, this strange sticky stuff is everywhere...)