Effect of Binder on the Properties of CL-20/FOX-7-based Polymer Bonded Explosive

被引：0
|
作者：
Li X.-D. [1 ,2 ]
Sun H.-Y. [1 ]
Song C.-G. [1 ]
Zhang X.-M. [1 ]
Yang W. [1 ]
Wang J.-Y. [1 ]
机构：
[1] School of Environment and Safety Engineering, North University of China, Taiyuan
[2] Science and Technology on Electromechanical Dynamic Control Laboratory, Xi'an
来源：
| 1600年 / China Ordnance Industry Corporation卷 / 43期
关键词：
Binder; CL-20; Cook-off test; FOX-7; PBX; Physical chemistry; Polymer bonded explosive;
D O I：
10.14077/j.issn.1007-7812.201901024
中图分类号：
学科分类号：
摘要：
To study the effect of different binders on the properties of CL-20/FOX-7 -based polymer bonded explosive(PBX), four kinds of CL-20/FOX-7-based PBX were prepared by solvent-slurry method using Estane, EPDM, ACM and EVA as binders, respectively. The crystal structure, morphology and thermal decomposition properties of the samples were characterized by scanning electron microscopy (SEM), laser particle size analyzer, X-ray diffractometry (XRD) and differential scanning calorimetry (DSC). The mechanical sensitivity and cook-off characteristics were tested by impact sensitivity tester, friction sensitivity tester and small-scale cook-off test equipment. The results show that the molding powder of CL-20/FOX-7-based PBX using EVA as binder is compact, and the surface of the PBX with EVA is smooth without debonding, revealing the best bonding effect in these PBXs.The activation energy of CL-20/FOX-7-based PBX with EVA binder is 87.75kJ/mol and 42.52kJ/mol higher than that of refined CL-20 and FOX-7, respectively. It indicates that the thermal stability of the PBX with EVA as binder is improved compared with the raw materials. Compared with the refined CL-20, the characteristic drop height of impact sensitivity of the PBX with EVA binder is 25.6cm higher, and the probability of friction sensitivity explosion is reduced by 52%.Simutaneously, the mechanical sensitivity of PBX samples with EVA binder is lower than explosvies with Estane, EPDM and ACM binders. Under the condition of small-scale cook-off test at a heating rate of 6K/min, the cook-off response level of PBX with EVA binder is burning, indicating that it can meet the requirement of safety test of cook-off and it has the cook-off resisitant characteristics. © 2020, Editorial Board of Journal of Explosives & Propellants. All right reserved.
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页码：51 / 56
页数：5
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