{"id":1125,"date":"2016-06-21T13:17:54","date_gmt":"2016-06-21T16:17:54","guid":{"rendered":"https:\/\/www.nachodelatorre.com.ar\/mosconi\/?p=1125"},"modified":"2016-06-21T13:17:54","modified_gmt":"2016-06-21T16:17:54","slug":"explosivos-pbx-basados-en-gapdntf-una-nueva-formula-usada-en-circuitos-explosives-de-pequeno-tamano","status":"publish","type":"post","link":"https:\/\/www.fie.undef.edu.ar\/ceptm\/?p=1125","title":{"rendered":"Explosivos PBX basados en GAP\/DNTF: una nueva formula usada en circuitos explosives de peque\u00f1o tama\u00f1o"},"content":{"rendered":"

En este documento se ha estudiado un PBX basado en GAP\/DNTF para lo cual se prepar\u00f3 una composici\u00f3n de 3,4-dinitrofurazanofuroxano (DNTF) y glycidyl azida polim\u00e9rica (GAP) como explosivo principal y ligante, respectivamente. Este PBX fue dise\u00f1ado, preparado y utilizado para rellenar el peque\u00f1o espacio de algunos circuitos explosivos. La formulaci\u00f3n de trabajo fue DNTF 85 %, GAP 11 %, 2,4-tolueno diisocianato (TDI) y otros aditivos para completar el 4% restante.<\/p>\n

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403<\/div>\n
GAP\/DNTF Based PBX Explosives: a Novel Formula Used in Small…<\/div>\n
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0<\/div>\n
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GAP\/DNTF<\/div>\n
2 Theta<\/div>\n
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Recrystallized DNTF<\/div>\n
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Ground DNTF<\/div>\n
Intensity\/[A.U]<\/div>\n
Figure 4.<\/div>\n
XRD test results.<\/div>\n
3.2<\/div>\n
SEM test results<\/div>\n
SEM images of the two kinds of DNTF fillers are shown in Figure<\/div>\n
5. From<\/div>\n
Figure 5, it can be seen that the shapes of both types DNTF particles are mostly<\/div>\n
flaky. The particle sizes of ground and recrystallized DNTF are about 10-15<\/div>\n
\u03bcm<\/div>\n
and 2-3<\/div>\n
\u03bcm respectively. The flakiness of the crystals may be related to the<\/div>\n
molecular structure of DNTF and makes for a high packing density and hence<\/div>\n
high energy of explosion [17].<\/div>\n
<\/div>\n
404<\/div>\n
C. An, X. Wen, J. Wang, B. Wu<\/div>\n
a. b.<\/div>\n
Figure 5.<\/div>\n
SEM images of the two kinds of DNTF fillers, a:<\/div>\n
recrystallized DNTF;<\/div>\n
b: ground DNTF.<\/div>\n
3.3<\/div>\n
DSC test results<\/div>\n
Figure 6 shows the DSC curves for raw DNTF and GAP\/DNTF at 1, 2, 5 and<\/div>\n
10 K\u00b7min<\/div>\n
\u22121<\/div>\n
heating rates. An endothermic peak (108.9-109.6 \u00b0C) can be seen<\/div>\n
for the four heating rates in Figure 6 (A,<\/div>\n
B). The DSC results show that DNTF<\/div>\n
began to melt at about 109 \u00b0C. For the same sample, the exothermic peak<\/div>\n
temperatures decreased at a slower heating rate. This observation proves that<\/div>\n
thermal decomposition occurs more easily when the heating rate is slower. The<\/div>\n
exothermic peak temperatures of the GAP\/DNTF are lower than for raw DNTF.<\/div>\n
50<\/div>\n
100<\/div>\n
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14<\/div>\n
a<\/div>\n
Tp=248.48 \u00b0C<\/div>\n
b<\/div>\n
Tp=256.52 \u00b0C<\/div>\n
c<\/div>\n
Tp=265.36 \u00b0C<\/div>\n
d<\/div>\n
Tp=276.78 \u00b0C<\/div>\n
Temperature \/<\/div>\n
\u00b0C<\/div>\n
a<\/div>\n
b<\/div>\n
c<\/div>\n
d<\/div>\n
A<\/div>\n
Heat flow \/ wg<\/div>\n
-1<\/div>\n
50<\/div>\n
1001<\/div>\n
50<\/div>\n
2002<\/div>\n
50<\/div>\n
3003<\/div>\n
50<\/div>\n
40<\/div>\n
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-4<\/div>\n
-2<\/div>\n
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4<\/div>\n
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12<\/div>\n
14<\/div>\n
a<\/div>\n
a<\/div>\n
Tp= 247.44 \u00b0C<\/div>\n
b<\/div>\n
Tp=255.64 \u00b0C<\/div>\n
c<\/div>\n
Tp=264.55 \u00b0C<\/div>\n
d<\/div>\n
Tp=275.89 \u00b0C<\/div>\n
Heat flow \/ wg<\/div>\n
-1<\/div>\n
Temperature \/\u00b0C<\/div>\n
b<\/div>\n
d<\/div>\n
c<\/div>\n
B<\/div>\n
Figure 6.<\/div>\n
DSC curves of raw DNTF (A) and GAP\/DNTF (B) at heating rates<\/div>\n
of (a) 1 K\u0387min<\/div>\n
\u22121<\/div>\n
, (b) 2 K\u0387min<\/div>\n
\u22121<\/div>\n
, (c) 5 K\u0387min<\/div>\n
\u22121<\/div>\n
and (d) 10 K\u0387min<\/div>\n
\u22121<\/div>\n
.<\/div>\n
The thermal decomposition kinetics parameters of raw DNTF and the GAP\/<\/div>\n
DNTF PBX can be calculated using the Kissinger method (Equation 1) [18].<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
<\/div>\n
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410<\/div>\n
C. An, X. Wen, J. Wang, B. Wu<\/div>\n
and Application of High Energy Density Material DNTF,<\/div>\n
J<\/div>\n
.<\/div>\n
Acta Armamentarii<\/div>\n
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2004<\/div>\n
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25<\/div>\n
(2), 155-158.<\/div>\n
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Fuente:<\/strong>\u00a0http:\/\/www.wydawnictwa.ipo.waw.pl<\/a><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

En este documento se ha estudiado un PBX basado en GAP\/DNTF para lo cual se prepar\u00f3 una composici\u00f3n de 3,4-dinitrofurazanofuroxano (DNTF) y glycidyl azida polim\u00e9rica… <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[29,24],"tags":[],"_links":{"self":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/1125"}],"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=1125"}],"version-history":[{"count":0,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=\/wp\/v2\/posts\/1125\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1125"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1125"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fie.undef.edu.ar\/ceptm\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}