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国际能源材料和化学驱动期刊

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ISSN 打印: 2150-766X

ISSN 在线: 2150-7678

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 0.7 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 0.7 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.1 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00016 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.18 SJR: 0.313 SNIP: 0.6 CiteScore™:: 1.6 H-Index: 16

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PREPARATION AND CHARACTERIZATION OF HMX/GAP-ETPE NANOCOMPOSITES

卷 15, 册 2, 2016, pp. 131-140
DOI: 10.1615/IntJEnergeticMaterialsChemProp.2015015577
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摘要

An energetic thermoplastic elastomer (ETPE) was synthesized by glycidyl azide polymer (GAP), Diphenyl-methane-diisocyanate (MDI), and 1,4-butanediol (BDO). With GAP-ETPE as the binder, cyclotetramethylene tetranitramine (HMX)-based nanocomposites were prepared from their cosolution by spray drying. The particle size and morphology of explosive samples were characterized by scanning electron and transmission electron microscopy. The crystal ingredients of the explosive samples were identified by X-ray diffraction. The impact sensitivity and thermal decomposition properties of these samples were also tested and analyzed. The results show that the HMX/GAP-ETPE microparticles are spherical in shape and range from 0.5 to 3 µm in size. Within them microparticles, β-HMX particles uniformly and discretely disperse in GAP-ETPE binders with the particle size ranging from 50 to 200 nm. The nanocomposite particles exhibit considerably low impact sensitivity, meaning that its drop height is 64.9 cm, which increases by 45.3 cm when compared with raw HMX. Moreover, the nanocomposites are easy to decompose under the thermal stimulus because the exothermic decomposition peak temperature decreases to about 6°C at the same heating rate and apparent activation energy decreases to 11.36 kJ/mol, when compared with the raw HMX. When the decomposition starts, HMX/GAP-ETPE nanocomposites have a higher reaction rate constant than raw HMX at the same temperature.

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