Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
Author: Subject: nanoporous metal/strong oxidizer energetics
Industrial Adhesive
Harmless
*




Posts: 14
Registered: 30-11-2018
Location: to be honest, I lost track
Member Is Offline


[*] posted on 10-5-2021 at 07:04
nanoporous metal/strong oxidizer energetics



has anyone here ever had any experience working with energetic nano materials? if so do you know the best oxidizer to use. my guess is that H2O2 or perchloric acid would be up there. and would there be any good fluorine compounds that would be a suitable oxidizer/

here are some intresting papers regarding silicon based nano material energetics

https://www.sciencedirect.com/science/article/abs/pii/S13858...

https://link.springer.com/referenceworkentry/10.1007%2F978-3...

https://www.researchgate.net/publication/235046495_Nanoporou...
View user's profile Visit user's homepage View All Posts By User
Hey Buddy
Hazard to Self
**




Posts: 62
Registered: 3-11-2020
Member Is Offline


[*] posted on 17-5-2021 at 06:15


"In many ways similar to boron, silicon is a safe, relatively inexpensive fuel used in igniter and delay compositions. It has a high melting point (1,410°C), and com- binations of this material with a high-melting oxidizer may be diffcult to ignite. The oxidation product, silicon dioxide (SiO2), is high melting and, importantly, is environmentally acceptable. Silicon has been used for a number of years, with red lead oxide (Pb3O4) as the oxidizer, to produce fast-burning delay mixtures for use in blasting caps. The delay columns are manufactured with a range of delay times, and each provides a brief time lag (measured in milliseconds) between the fring signal and detonation of the cap. This allows the explosives engineer to design a blasting pattern whereby all of the explosive charges that have been carefully and systemati- cally placed in a quarry or mine do not detonate simultaneously. The resulting brief delays produce a blast pattern that can aid greatly in reducing fy rock and ground vibrations compared to a blast where all charges are detonated simultaneously.
The reaction of silicon with iron oxide is an example of a moderate-reactivity, low-gas formulation seeking an application. The reaction zone moves through the composition as an incandescent zone, with minimum faming. The reaction products (iron and silicon dioxide) are environmentally acceptable by most current criteria. The reaction is
2 Fe2O3 + 3 Si → 4 Fe + 3 SiO2 (3.23) which is stoichiometric at 83% iron(III) oxide and 17% silicon." - Conkling, Chemistry of Pyrotechnics

Si is similar to lower temp version of B in terms of straight metalloid ignitor comp reactions.

I haven't heard of liquid oxidizers with nanoenergetics but who knows.
View user's profile View All Posts By User

  Go To Top