CHINESE JOURNAL OF ENERGETIC MATERIALS
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改性B炸药的力学性能
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(中国工程物理研究院化工材料研究所, 四川 绵阳 621900)

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高大元(1962-),男,副研究员,博士,主要从事含能材料的热分析、爆轰和安全性能研究。e-mail: gaody466@163.com

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国家自然科学基金-中国工程物理研究院联合基金(NSAF 11076002)


Mechanical Properties of Modified Composition B
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(Institute of Chemical Materials, CAEP, Mianyang 621900, China)

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    摘要:

    为了解添加剂对B炸药力学性能的影响, 分别添加2%的热塑性弹性体(VP-401和VP-501)、1%或3%的季戊四醇和丙稀醛缩合的热固树脂/硫酸二乙酯(123树脂/DES)、5%固化系数0.6和0.8的端羟基聚丁二烯/二苯甲烷-4, 4′-二异氰酸酯(HTPB/MDI), 制备了相应6个改性B炸药配方(B-1、B-2、B-3、B-4、B-5和B-6)。进行了静态压缩试验、巴西试验和分离式霍普金森压杆试验, 获得了改性B炸药在静力压缩、间接拉伸和低速冲击作用下的应力-应变曲线。对比分析了改性B炸药的强度和韧性变化。结果表明, 与B炸药相比, B-1和B-2的压缩弹性模量分别增加了1.49 GPa和2.28 GPa, 压缩强度分别增加了6.7 MPa和6.3 MPa, 其压缩弹性和韧性均好于B炸药。应变率500 s-1时, 与B炸药相比, B-3和B-4的动态压缩强度分别增加了1.99 MPa和7.61 MPa, 而B-5和B-6的动态压缩强度分别降低了8.33 MPa和19.47 MPa。这说明, B-3和B-4的抗低速冲击能力提高, B-5和B-6炸药的抗低速冲击能力降低。

    Abstract:

    To understand the effect of additives on mechanical properties of Comp.B, six formulations of modified Comp.B(B-1, B-2, B-3, B-4, B-5 and B-6)were prepared by addition of thermoplastic elastomer(VP-401 and VP-501) of mass percentage 2%, thermosetting resin polymerized by pentaerythritol and acrylic aldehyde /diethyl sulfate(123 resin/DES) of mass percentage 1% or 3%, hydroxyl-terminated polybutadiene/diphenyl methene-4, 4′diisocyanate (HTPB/MDI) of mass percentage 5% in solidifying coefficient 0.6 and 0.8, respectively. The compression test、Brazilian test and split Hopkinson pressure bar(SHPB) test were performed.The stress-strain curves of modified Comp. B in static compression, indirect tensile and low speed impact were obtained.The elasticity and toughness changes of modified Comp.B were compared and analyzed. Results show that compared with Comp.B, the compressive elastic modulus of B-1 and B-2 explosives increase by 1.49 GPa and 2.28 GPa, respectively. The compressive strength of B-1 and B-2 explosives increase by 6.7 MPa and 6.3 MPa, respectively. Their elasticity and toughness of compress are better than those of Comp.B. When strain rate 50 s-1. Compared with Comp.B, the dynamic compressive strength of B-3 and B-4 explosives increase by 1.9 MPa and 7.6 MPa, respectively, while the dynamic compressive strength of B-5 and B-6 explosives decrease by 8.33 MPa and 19.47 MPa respectively. Results show that the low speed impact-resistance ability increases for B-3 and B-4 explosives and reduces for B-5 and B-6 explosives.

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引用本文

高大元,蓝林钢,温茂萍,等.改性B炸药的力学性能[J].含能材料, 2014, 22(3):359-364. DOI:10.3969/j. issn.1006-9941.2014.03.016.
GAO Da-yuan, LAN Lin-gang, WEN Mao-ping, et al. Mechanical Properties of Modified Composition B[J]. Chinese Journal of Energetic Materials, 2014, 22(3):359-364. DOI:10.3969/j. issn.1006-9941.2014.03.016.

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  • 收稿日期: 2013-05-16
  • 最后修改日期: 2013-09-22
  • 录用日期: 2013-10-10
  • 在线发布日期: 2014-07-01
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