添加剂对黑索今颗粒包覆度和机械感度的影响

黄菊; 王伯良; 刘伟; 赵新颖; 彭金华

doi:10.11883/1001-1455(2015)04-0454-05

添加剂对黑索今颗粒包覆度和机械感度的影响

doi: 10.11883/1001-1455(2015)04-0454-05

黄菊^{1, 2,},
王伯良^1, ,,
刘伟¹,
赵新颖¹,
彭金华¹

1.
南京理工大学化工学院，江苏南京 210094
2.
徐州工程学院化学化工学院，江苏徐州 221111

详细信息

作者简介:
黄菊(1985-), 女, 博士研究生

通讯作者:
王伯良, boliangwang@163.com

中图分类号: O389
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- 被引次数: 8
出版历程
- 收稿日期: 2012-06-12
- 修回日期: 2013-07-28
- 刊出日期: 2015-08-10

Influence of additives on the coverage degree and mechanical sensitivity of RDX

1.
School of chemical engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
School of chemistry and chemical engineering, Xuzhou Institute of Technology, Xuzhou 221111, Jiangsu, China

摘要

摘要: 采用接触角测定仪测定了添加不同助剂的黏结剂溶液表面张力，以及在RDX炸药颗粒表面的接触角，通过扫描电镜图像、X射线能谱和样品的机械感度评价样品的表面包覆情况。分析了铺展系数、黏附功与包覆度、特性落高的关系，发现包覆度随铺展系数的增大而增大，随黏附功的增大而减小，说明铺展系数越大、黏附功越小，对润湿包覆越有利。且包覆度越大，特性落高越大，机械感度越低。扫描电镜研究结果表明，包覆后样品表面有一层均匀的橡胶薄膜。XPS分析结果表明，未添加助剂时的包覆度为16.85%，添加增黏剂和表面活性剂后样品包覆度可提高到95.41%。机械感度结果也表明，添加合适的助剂后特性落高由11.47 cm提高到25.12 cm，摩擦感度也明显降低。
- 爆炸力学 /
- 表面包覆 /
- 添加剂 /
- 黑索今 /
- 机械感度
Abstract: The surface tension of binder containing different additives and the contact angle with RDX were measured by a contact angle meter. The coating quality is evaluated according to the micro-images acquired by scanning electron microscopy (SEM), the spectrum by X-ray photoelectron spectroscopy (XPS) and the impact sensitivity of the samples. The spreading coefficient (S) and adhesive work (W₁₂) were calculated, and then the dependence of the coverage degree (R) on S and W₁₂ were analyzed. The results show that R increased with the increase of S, and reduced with the increase of W₁₂. It indicates that the better coating quality comes with the bigger S and the smaller W₁₂. And the lower mechanical sensitivity comes with the greater coverge degree. The results of SEM show that a thin layer of film was formed on the surface of RDX. The results of XPS show that the additives can raise the coverage degree from 16.85% to 95.41%. The results of impact sensitivity show that the additives can raise the characteristic fall distance from 11.47 cm to 25.12 cm, and significantly reduce friction sensitivity.
- mechanics of explosion /
- surface coating /
- additives /
- RDX /
- mechanical sensitivity

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图 1 包覆前后RDX样品的SEM照片

Figure 1. SEM photos of unprocessed and coated RDX samples

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图 2 包覆前后样品的XPS图谱

Figure 2. XPS spectra of unprocessed and coated RDX samples

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图 3 R随铺展系数S的变化关系

Figure 3. R varied with S

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图 4 R随黏附功W₁₂的变化关系

Figure 4. R varied with W₁₂

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图 5 可能的包覆过程示意图

Figure 5. The schematic diagram of possible coating processes

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表 1 包覆样品组分含量

Table 1. The content of coating samples

样品	w/%					样品	w/%
样品	RDX	黏接剂	增黏剂	卵磷脂	6#添加剂	样品	RDX	黏接剂	增黏剂	卵磷脂	6#添加剂
1	98.0	2.0	-	-	-	4	97.8	2.0	-	-	0.2
2	97.8	2.0	0.2	-	-	5	97.6	2.0	0.2	0.2	-
3	97.8	2.0	-	0.2	-	6	97.6	2.0	0.2	-	0.2

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表 2 黏结剂溶液在RDX表面的铺展系数和黏附功

Table 2. The spreading coefficient and adhesive work of binder with RDX

样品	r_l-g/(mN·m^-1)	θ/(°)	S	W₁₂/(mJ·m^-2)
1	26.364 8	35.54	-4.911 5	47.818 1
2	16.466 3	31.46	-2.420 5	30.512 1
3	14.565 6	26.14	-1.489 8	27.641 4
4	12.636 9	25.94	-1.273 1	24.000 7
5	11.035 6	24.60	-1.001 6	21.069 6
6	10.131 7	23.71	-0.855 2	19.408 2

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表 3 包覆样品包覆度和机械感度

Table 3. The coverage degree and impact sensitivity of coating samples

样品	R/(%)	H₅₀/cm	f/%	样品	R/%	H₅₀/cm	f/%
1	16.85	11.47	68	4	72.04	19.95	24
2	54.66	18.84	32	5	87.80	20.73	28
3	66.18	19.20	36	6	95.41	25.12	16

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参考文献(7)

[1]	黄亨建, 董海山, 张明, 等.添加剂与RDX的界面作用及对撞击感度的影响研究[J].爆炸与冲击, 2003, 23(2): 169-172. Huang Heng-jian, Dong Hai-shan, Zhang Ming, et al. A study on the interface action between RDX and desensitizers and related effects on impact sensitivity[J]. Explosion and Shock Waves, 2003, 23(2): 169-172.
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[3]	翟海光.压装高聚物粘结炸药界面化学作用的研究[J].机械管理开发, 2006, 22(1): 26-28. Zhai Hai-guang. Study on the chemical action of pressure packed plastic bonded explosives interface[J]. Mechanical Management and Development, 2006, 22(1): 26-28.
[4]	徐庆兰.高聚物粘结炸药包覆过程及粘结机理的初步探讨[J].含能材料, 1993, 1(2): 1-4. Xu Qing-lan. Adhesion and its mechanism of polyer bonded explosive[J]. Energetic Materials, 1993, 1(2): 1-4.
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