Nano energetic material composite having explosion characteristics through optical ignition, and preparation method therefor
AssigneePusan National University Industry-University Cooperation Foundation
InventorsSoohyung Kim, Kyungnyun Kim
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Abstract
The present invention relates to a nano-energetic material (nEM) composite having ignition and explosion characteristics by a low-power laser pointer beam and capable of being remotely and optically ignited by adding black powder to nEM composite powder, and a method of preparing the same. The nEM composite includes: nEM composite powder; and black powder used as a mediator for initial ignition to initiate ignition in response to a laser pointer beam and cause a nEM to be continuously ignited and consecutively explode by ignition heat.
Claims10
A nano-energetic material (nEM) composite having an explosion characteristic by optical ignition, the nEM composite comprising:
- nEM composite powder;
- and
- black powder (BP) mixed with the nEM composite powder and used as a mediator for initial ignition
- wherein the BP of the mixed BP and nEMs composite powder is ignited by a laser pointer beam while the nEM is not directly ignited by the laser pointer beam during the initial ignition,
- wherein ignition heat from the initial ignition causes the nEM to be continuously ignited and consecutively exploded,
- wherein a mass ratio of the mixed BP and the nEM composite powder is BP:nEM=2.3:7.7,
- wherein the BP is used as the mediator for the initial ignition under a condition of a laser pointer having a power of <1,500 mW/mm2,
- wherein a minimum energy per unit area of the laser pointer beam is 400 mW/mm2 or more for combustion of the mixed BP and nEMs composite powder.
A method of preparing a nEM composite having an explosion characteristic by optical ignition, the method comprising:
- mixing nEM composite powder;
- mixing black powder;
- and
- preparing nEM/black powder composite powder by mixing the nEM composite powder with the black powder,
- wherein the black powder of the nEMs/back powder composite powder is ignited by a laser pointer beam while the nEM is not directly ignited by the laser pointer beam during an initial ignition,
- wherein ignition heat from the initial ignition causes the nEM to be continuously ignited and consecutively exploded,
- wherein a mass ratio of the nEM/black powder composite powder is BP:nEM=2.3:7.7,
- wherein the black powder is used as the mediator for the initial ignition under a condition of a laser pointer having a power of <1,500 mW/mm2,
- wherein a minimum energy per unit area of the laser pointer beam is 400 mW/mm2 or more for combustion of the nEMs/black powder composite powder.
Dependencies are inferred from the claim text.