Studies on CL-20: The most powerful high energy material
CL-20 is an attractive HEM having density (>2 g cm-3) and velocity of detonation (9400 m s-1) superior to HMX (1.9 g cm-3 and 9100 m s-1). During this study, CL-20 was synthesized to establish viability of efficient synthesis method. The compound synthesized at HEMRL was characterized by FTIR, 1H...
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Veröffentlicht in: | Journal of thermal analysis and calorimetry 2003, Vol.73 (3), p.913-922 |
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container_title | Journal of thermal analysis and calorimetry |
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creator | GEETHA, M NAIR, U. R SARWADE, D. B GORE, G. M ASTHANA, S. N SINGH, H |
description | CL-20 is an attractive HEM having density (>2 g cm-3) and velocity of detonation (9400 m s-1) superior to HMX (1.9 g cm-3 and 9100 m s-1). During this study, CL-20 was synthesized to establish viability of efficient synthesis method. The compound synthesized at HEMRL was characterized by FTIR, 1H NMR and elemental analysis. Thermal studies (dynamic DSC and isothermal TG) were undertaken to determine kinetic parameters and understand the decomposition patterns. An attempt is made to explain the mechanism of decomposition of CL-20 on the basis of the data obtained by the authors and findings of other researchers. The activation energy values obtained during this work by adopting various approaches are close to the values reported for N-NO2 bond cleavage suggesting that it is global rate determining process rather than the collapse of cage structure. Mass spectra also provides evidences in this regard. Monitoring of decomposition products at high temperature supports these findings and brings out that NO2 initiates secondary decomposition processes because of entrapment in cage structure. |
doi_str_mv | 10.1023/A:1025859203860 |
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The activation energy values obtained during this work by adopting various approaches are close to the values reported for N-NO2 bond cleavage suggesting that it is global rate determining process rather than the collapse of cage structure. Mass spectra also provides evidences in this regard. Monitoring of decomposition products at high temperature supports these findings and brings out that NO2 initiates secondary decomposition processes because of entrapment in cage structure.</description><identifier>ISSN: 1388-6150</identifier><identifier>EISSN: 1588-2926</identifier><identifier>DOI: 10.1023/A:1025859203860</identifier><language>eng</language><publisher>Dordrecht: Springer</publisher><subject>Applied sciences ; Cages ; Chemical analysis ; Chemical industry and chemicals ; Decomposition ; Detonation ; Energy value ; Entrapment ; Exact sciences and technology ; High temperature ; HMX ; Industrial chemicals ; Mass spectra ; Nitrogen dioxide ; NMR ; Nuclear magnetic resonance ; Powders, propellants, explosives ; Synthesis</subject><ispartof>Journal of thermal analysis and calorimetry, 2003, Vol.73 (3), p.913-922</ispartof><rights>2004 INIST-CNRS</rights><rights>Kluwer Academic Publisher/Akadémiai Kiadó 2003.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c257t-e275bb0dd1bdcacc3aeb3dbf551d41368660cb66dba8155a68c4fae990e72af23</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,781,785,4025,27928,27929,27930</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=15123336$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>GEETHA, M</creatorcontrib><creatorcontrib>NAIR, U. 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The activation energy values obtained during this work by adopting various approaches are close to the values reported for N-NO2 bond cleavage suggesting that it is global rate determining process rather than the collapse of cage structure. Mass spectra also provides evidences in this regard. Monitoring of decomposition products at high temperature supports these findings and brings out that NO2 initiates secondary decomposition processes because of entrapment in cage structure.</description><subject>Applied sciences</subject><subject>Cages</subject><subject>Chemical analysis</subject><subject>Chemical industry and chemicals</subject><subject>Decomposition</subject><subject>Detonation</subject><subject>Energy value</subject><subject>Entrapment</subject><subject>Exact sciences and technology</subject><subject>High temperature</subject><subject>HMX</subject><subject>Industrial chemicals</subject><subject>Mass spectra</subject><subject>Nitrogen dioxide</subject><subject>NMR</subject><subject>Nuclear magnetic resonance</subject><subject>Powders, propellants, explosives</subject><subject>Synthesis</subject><issn>1388-6150</issn><issn>1588-2926</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNotjktLxDAUhYMoOI6u3QbEZfUmadJ0dsPgCwouHNfl5tFph75MWmT-vQVndb7FxzmHkHsGTwy4eN5ulpBa5hyEVnBBVkxqnfCcq8uFxcKKSbgmNzEeASDPga2I_ppm1_hIh57uioTDhu5rT7shTnQcfn2o5pbWzaGmvvfhcKIdTj402N6Sqwrb6O_OuSbfry_73XtSfL597LZFYrnMpsTzTBoDzjHjLFor0BvhTCUlcykTSisF1ijlDGomJSpt0wr9cs5nHCsu1uThv3cMw8_s41Qehzn0y2TJlUpBap7pxXo8WxgttlXA3jaxHEPTYTiVTDIuhFDiD8SIVLM</recordid><startdate>2003</startdate><enddate>2003</enddate><creator>GEETHA, M</creator><creator>NAIR, U. 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An attempt is made to explain the mechanism of decomposition of CL-20 on the basis of the data obtained by the authors and findings of other researchers. The activation energy values obtained during this work by adopting various approaches are close to the values reported for N-NO2 bond cleavage suggesting that it is global rate determining process rather than the collapse of cage structure. Mass spectra also provides evidences in this regard. Monitoring of decomposition products at high temperature supports these findings and brings out that NO2 initiates secondary decomposition processes because of entrapment in cage structure.</abstract><cop>Dordrecht</cop><pub>Springer</pub><doi>10.1023/A:1025859203860</doi><tpages>10</tpages></addata></record> |
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subjects | Applied sciences Cages Chemical analysis Chemical industry and chemicals Decomposition Detonation Energy value Entrapment Exact sciences and technology High temperature HMX Industrial chemicals Mass spectra Nitrogen dioxide NMR Nuclear magnetic resonance Powders, propellants, explosives Synthesis |
title | Studies on CL-20: The most powerful high energy material |
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