{"id":15130,"date":"2024-07-18T10:19:32","date_gmt":"2024-07-18T13:19:32","guid":{"rendered":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=15130"},"modified":"2024-07-18T10:19:32","modified_gmt":"2024-07-18T13:19:32","slug":"un-explosivo-portador-de-alta-densidad-y-baja-sensibilidad-que-promete-reemplazar-al-tnt-3-bromo-5-fluoro-246-trinitroanisol","status":"publish","type":"post","link":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=15130","title":{"rendered":"Un explosivo portador de alta densidad y baja sensibilidad que promete reemplazar al TNT:\u00a03-bromo-5-fluoro-2,4,6-trinitroanisol"},"content":{"rendered":"<p>Buscando un reemplazo del TNT, los autores de este art\u00edculo utilizaron un m\u00e9todo qu\u00edmico para sintetizar un nuevo explosivo:\u00a03-bromo-5-fluoro-2,<wbr \/>4,6-trinitroanisol (BFTNAN).\u00a0Los resultados de los\u00a0ensayos mostraron que la\u00a0entalp\u00eda de formaci\u00f3n de BFTNAN fue\u00a072,6 kJ\u00b7mol-1. A una velocidad de calentamiento de 20 \u2103\u00b7min-1, el pico de descomposici\u00f3n t\u00e9rmica de\u00a0BFTNAN\u00a0es\u00a0a TP=250,6 \u2103, y la energ\u00eda de activaci\u00f3n es EK=80 kJ\u00b7mol-1, que est\u00e1 cerca de los valores de Tp y\u00a0EK del\u00a0TNT. Esto indica que\u00a0BFTNAN\u00a0es un explosivo relativamente f\u00e1cil de descomponer, pero la velocidad de descomposici\u00f3n no es r\u00e1pida. La temperatura cr\u00edtica\u00a0para la\u00a0explosi\u00f3n\u00a0t\u00e9rmica de\u00a0BFTNAN\u00a0alcanz\u00f3 Tb=216 \u2103, que tambi\u00e9n est\u00e1 cerca del valor Tb de TNT. La sensibilidad al impacto y a la fricci\u00f3n del\u00a0BFTNAN\u00a0fue menor que la de TNT, que estaba cerca de la de DNAN. La sensibilidad t\u00e9rmica de\u00a0BFTNAN\u00a0es m\u00e1s\u00a0baja\u00a0que TNT. La velocidad de detonaci\u00f3n y el calor de explosi\u00f3n del explosivo fundido basado en\u00a0BFTNAN\u00a0fueron\u00a0claramente superiores a los de los explosivos basados en TNT. Especialmente, el explosivo fundido a base de\u00a0BFTNAN\u00a0ha mostrado\u00a0ventajas\u00a0en almacenamiento de energ\u00eda qu\u00edmica, capacidad de trabajo, brisancia y capacidad de aceleraci\u00f3n de metales.<\/p>\n<hr \/>\n<p class=\"section-title u-h4 u-margin-l-top u-margin-xs-bottom\"><strong>Abstract<\/strong><\/p>\n<div id=\"abssec0010\">\n<p id=\"abspara0010\">To address the issues of high saturated vapor pressure, high toxicity, and high viscosity of TNT, this article used a chemical method to synthesize a new carrier explosive BFTNAN. The prepared samples were characterized using scanning electron microscope(SEM), energy spectrum(EDS), x-ray diffraction(XRD), infrared spectrum(IR), x-ray photoelectron spectroscopy(XPS), nuclear magnetic resonance, and elemental analysis techniques. The enthalpy of formation of BFTNAN was measured using a specialized calorimeter that is specially used in testing of explosives and powders. The thermal decomposition performance of BFTNAN was tested by DSC technology. Meanwhile, the mechanical sensitivity, thermal sensitivity, and detonation performance of BFTNAN based melt-cast explosive was also tested. The results of characterizations showed that the prepared sample was indeed BFTNAN. The enthalpy of formation of BFTNAN was determined as \u0394<em>H<\/em><sub>f<em>,<\/em>BFTNAN<\/sub>\u00a0=\u00a0\u221272.6\u00a0kJ\u00b7mol<sup>\u22121<\/sup>. At a heating rate of 20\u00a0\u00b0C\u00b7min<sup>\u22121<\/sup>, the thermal decomposition peak of BFTNAN is at\u00a0<em>T<\/em><sub>P<\/sub>\u00a0=\u00a0250.6\u00a0\u00b0C, and the activation energy is\u00a0<em>E<\/em><sub>K<\/sub>\u00a0=\u00a080\u00a0kJ\u00b7mol<sup>\u22121<\/sup>, which is closed to the\u00a0<em>T<\/em><sub>p<\/sub>\u00a0and\u00a0<em>E<\/em><sub>K<\/sub>\u00a0values of TNT. This indicates that BFTNAN is a relatively easy to decompose explosive, but the decomposition rate is not fast. The critical temperature for thermal explosion of BFTNAN reached\u00a0<em>T<\/em><sub>b<\/sub>\u00a0=\u00a0216\u00a0\u00b0C, which is also closed to the\u00a0<em>T<\/em><sub>b<\/sub>\u00a0value of TNT. The impact and friction sensitivity of BFTNAN were lower than those of TNT, which was closed to those of DNAN. The thermal sensitivity of BFTNAN is lower than TNT. The detonation velocity and heat of explosion of BFTNAN based melt-cast explosive were distinctly higher than those of TNT based explosive. Especially, BFTNAN based melt-cast explosive were of the advantages in chemical energy storage, work capacity, brisance, and ability of acceleration metals.<\/p>\n<p><a href=\"https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2024\/07\/1-s2.0-S2666647224000381-main.pdf\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" class=\"aligncenter wp-image-5168\" src=\"https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2020\/02\/icono-PDF-1-243x300.png\" alt=\"Descargar archivo pdf\" width=\"75\" height=\"93\" srcset=\"https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2020\/02\/icono-PDF-1-243x300.png 243w, https:\/\/www.fie.undef.edu.ar\/ceptm\/wp-content\/uploads\/2020\/02\/icono-PDF-1.png 310w\" sizes=\"(max-width: 75px) 100vw, 75px\" \/><\/a><strong>Fuente:<\/strong> <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S2666647224000381?via%3Dihub\" target=\"_blank\" rel=\"noopener\"><em>https:\/\/www.sciencedirect.com<\/em><\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Buscando un reemplazo del TNT, los autores de este art\u00edculo utilizaron un m\u00e9todo qu\u00edmico para sintetizar un nuevo explosivo:\u00a03-bromo-5-fluoro-2,4,6-trinitroanisol (BFTNAN).\u00a0Los resultados de los\u00a0ensayos mostraron que&hellip; <\/p>\n","protected":false},"author":1,"featured_media":15132,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[24],"tags":[],"_links":{"self":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/15130"}],"collection":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=15130"}],"version-history":[{"count":1,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/15130\/revisions"}],"predecessor-version":[{"id":15133,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/15130\/revisions\/15133"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/media\/15132"}],"wp:attachment":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=15130"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15130"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15130"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}