Pyrolant

Pyrolant (English made-up word from Greek pyr = fire) describes energetic materials that produce very hot flames when burned .

Pyrolante are metal-based pyrotechnic sets with any oxidizing agent . The term pyrolant was originally coined by Kuwahara in 1992 in an essay on magnesium / Teflon / Viton to distinguish between those formulations that function as propellants and those that only provide a hot flame and are not necessarily propellant are able to distinguish.

A similar term in English is the term propellant , which describes either chemically uniform or composite systems that can be used as propellants.

Metal-based pyrotechnic charges, ie "pyrolants", are generally characterized by a very high combustion temperature (> 2000 K) and high proportions of condensed reaction products such as. B. metal oxides and fluorides and soot characterized under equilibrium conditions.

Typical P. are used as ignition (Zr / ), luminous (Mg / ) and decoy sets (Mg / ); see e.g. B. MTV . ${\ displaystyle BaCrO _ {\ mathrm {4}}}$ ${\ displaystyle NaNO _ {\ mathrm {3}}}$ ${\ displaystyle (C _ {\ mathrm {2}} F _ {\ mathrm {4}}) _ {\ mathrm {n}}}$

The Koruskativ or Koruskativstoffe form a subgroup of the Pyrolants. Fritz Zwicky borrowed the term coruscative from the Latin coruscare = to consume and thus describes binary material systems which are capable of exothermic alloy formation or metathesis reactions .

literature

↑ T. Kuwahara, T. Ochiachi: Burning Rate of Mg / TF Pyrolants. Proceedings of the 18th Int. Pyrotechnics seminar. 1992, p. 539.
↑ T. Kuwahara, T. Kohno, CH Wang: Static Electric Sensitivity Characteristics of Zr / BaCrO ₄ , Pyrolants. In: Prop., Explos., Pyrotech. 29, 2004, p. 56.
↑ JR Ward, LJ Decker, AW Barrows: Burning Rates of Pressed Strands of a Stoichiometric Magnesium-Sodium Nitrate Mix. In: Combust. Flame. 51, 1983, p. 121.
↑ Ernst-Christian Koch: Metal / Fluorocarbon Pyrolants: VI. Combustion Behavior and Radiation Properties of Magnesium / Poly (Carbon Monofluoride) Pyrolant. In: Propellants, Explosives, Pyrotechnics. 30, 2005, p. 209, doi : 10.1002 / prep.200500007 .
^ F. Zwicky: US Patent 3,135,205, 1964, Coruscative Ballistic Device.

[1] T. Kuwahara, T. Ochiachi: Burning Rate of Mg / TF Pyrolants. Proceedings of the 18th Int. Pyrotechnics seminar. 1992, p. 539.

[2] T. Kuwahara, T. Kohno, CH Wang: Static Electric Sensitivity Characteristics of Zr / BaCrO ₄ , Pyrolants. In: Prop., Explos., Pyrotech. 29, 2004, p. 56.

[3] JR Ward, LJ Decker, AW Barrows: Burning Rates of Pressed Strands of a Stoichiometric Magnesium-Sodium Nitrate Mix. In: Combust. Flame. 51, 1983, p. 121.

[4] Ernst-Christian Koch: Metal / Fluorocarbon Pyrolants: VI. Combustion Behavior and Radiation Properties of Magnesium / Poly (Carbon Monofluoride) Pyrolant. In: Propellants, Explosives, Pyrotechnics. 30, 2005, p. 209, doi : 10.1002 / prep.200500007 .

[5] F. Zwicky: US Patent 3,135,205, 1964, Coruscative Ballistic Device.