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Co-precipitation preparation and burning performance test of delay composition containing barium chromate

 

QI Yi1, WANG Jin-ying1, ZHANG Xin1, YU Shuo1, YU Hui-qin1,2

 

(1. School of Environment and Safety Engineering, North University of China, Taiyuan 030051, China; 2. Dept. of Civil Engineering, Changzhi Vocational and Technical College, Changzhi 046000, China)

 

 

Abstract: In order to optimize the performance of delay composition containing barium chromate, the preparation conditions of barium chromate were optimized, and S/BaCrO4/KClO4 delay composition was prepared by co-precipitation using barium chromate as precipitant.Then,the ignition temperature, delay time and other burning performance were tested. The results show that the ignition temperature of S/BaCrO4/KClO4 delay composition prepared by co-precipitation method is higher than that by traditional mechanical mixing method; the burning rate is faster and the burning time precision is higher because co-precipitation method can make the components mix more evenly.This co-precipitation method with barium chromate can be extended to the preparation of other mixed explosive agents containing barium chromate.

 

Key words: barium chromate; co-precipitation; delay composition; delay time

 

CLD number: TJ455           Document code: A

 

Article ID: 1674-8042(2018)01-0073-05     doi: 10.3969/j.issn.1674-8042.2018.01.010

 

 

References

 

 

1] Xiao H, Ding S S, Xu X, et al. Controlled synthesis of barium chromate microcrystals. Crystal Research and Technology, 2014, 49(11): 919-925.

2] Han T F. Experimental study on influencing the precision of the delay composition. Huainan: Anhui University of Science and Technoilogy, 2015.

3] Li S J. Study on formula and preparation technology of high precision boron/barium chromate delay composition. Taiyuan: North University of China, 2011.

4] Ma H W. Study on the performance of high presition boron serises delay composition. Huainan: Anhui University of Science and Technoilogy, 2009.

5] Wu S Z, Shen R Q, Ye Y H, et al. Combustion characteristics of boron delayed composition. Chinese Journal of Energetic Materials, 2008, 16(5): 502-506.

6] Hui Y L. Study on burning rate and reaction Kinetics of boron delay composition. Nanjing: Nanjing University of Science and Technology, 2008.

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8] Lu K T, Yang C C, Ko Y H. Investigation of the burning properties of slow-propagation tungsten type delay compositions. Propellants, Explosives, Pyrotechnics, 2008, 33(3): 219-226.

9] Ren Q G, Qiao X J, Li W C, et al. Co-precipitation preparation and properties of silicon delay composition. Chinese Journal of Energetic Materials, 2012, 20(4): 409-413.

10] Cheng C L, Liu Y C, Li S J, et al. Relationship between delay time and charging density of B/BaSO4/BaCrO4. Chenmical Intermediate, 2013, (3): 52-55.

 

 

含铬酸钡的共沉淀延期药制备及燃烧性能测试

 

 1, 王金英1, 张  欣1, 于  硕1, 于惠琴1,2

 

(1. 中北大学 环境与安全工程学院, 山西 太原 030051; 2. 长治职业技术学院 土木工程系,  山西 长治 046000)

 

 :  为了优化含铬酸钡延期药的性能, 对铬酸钡的制备工艺条件进行了优化, 并以铬酸钡为沉淀剂用共沉淀法制备出了S/BaCrO4/KClO4延期药, 对其发火点温度、 延期时间等燃烧性能进行了测试。 结果表明: 与传统机械混合法相比, 共沉淀法制备的S/BaCrO4/KClO4延期药的发火点温度更高; 燃速更快, 燃烧时间精度更高, 是因为共沉淀法可以使延期药中的各组分混合的更加均匀。 这种含铬酸钡的共沉淀制备方法可推广到其它含铬酸钡的混合火工药剂的制备。

 

关键词:  铬酸钡; 共沉淀法; 延期药; 延期时间

 

引用格式:  QI Yi, WANG Jin-ying, ZHANG Xin, et al. Co-precipitation preparation and burning performance test of delay composition containing barium chromate. Journal of Measurement Science and Instrumentation, 2018, 9(1): 73-77. [doi: 10.3969/j.issn.1674-8042.2018.01.010]


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