[1]杨斐①,李宗谕②,李秉擘①,等.球形NQ对DNAN基熔铸炸药流变性能的影响[J].爆破器材,2021,50(05):1-7,13.[doi:10.3969/j.issn.1001-8352.2021.05.001]
　YANG Fei,LI Zongyu,LI Bingbo,et al.Effect of Spherical Nitroguanidine on Rheological Properties of DNAN-Based Melt-Cast Explosive[J].EXPLOSIVE MATERIALS,2021,50(05):1-7,13.[doi:10.3969/j.issn.1001-8352.2021.05.001]
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球形NQ对DNAN基熔铸炸药流变性能的影响()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
50
期数:
2021年05
页码:
1-7,13
栏目:
基础理论
出版日期:
2021-10-05

文章信息/Info

Title:
Effect of Spherical Nitroguanidine on Rheological Properties of DNAN-Based Melt-Cast Explosive
文章编号:
5578
作者:
杨斐①; 李宗谕②; 李秉擘①; 王玮①; 罗一鸣①; 芮久后③; 赵雪③
①西安近代化学研究所（陕西西安，710065)
②保利澳瑞凯（山东）矿业服务有限公司（山东威海，264499）
③北京理工大学机电学院（北京，100081）
Author(s):
YANG Fei①;  LI Zongyu②;  LI Bingbo①;  WANG Wei①;  LUO Yiming①;  RUI Jiuhou③;  ZHAO Xue③
①Xi’an Modern Chemistry Research Institute (Shaanxi Xi’an, 710065)
②Poly Orica (Shandong) Mining Services Co., Ltd. (Shandong Weihai, 264499)
③School of Mechatronical Engineering, Beijing Institute of Technology (Beijing, 100081）
关键词:
球形NQ; DNAN; 熔铸炸药; 流变性能
Keywords:
spherical nitroguanidine;  DNAN;  melt-cast explosives;  rheological property
分类号:
TJ55
DOI:
10.3969/j.issn.1001-8352.2021.05.001
文献标志码:
A
摘要:
为研究硝基胍（NQ）球形化对2,4-二硝基苯甲醚(DNAN)/NQ体系流变性能的影响，采用旋转黏度仪研究了固体质量分数、剪切速率、颗粒形状及级配、工艺温度等因素引起的DNAN/NQ悬浮体系表观黏度的变化规律。结果表明：随着悬浮液固体质量分数的增加，表观黏度呈先缓慢增加至拐点再急剧增加的趋势，球形NQ与级配球形NQ在DNAN中的临界固体质量分数分别为55%和70%；固体质量分数越高，DNAN/NQ悬浮体系表观黏度受剪切速率的影响愈发明显，假塑性程度越高；相同条件下，颗粒越不规则，悬浮液体系越偏离牛顿流体，颗粒级配可有效降低悬浮液体系的假塑性程度；Arrhenius方程可精确描述DNAN/球形NQ悬浮液在96~115 ℃时表观黏度与温度的关系，悬浮液固体质量分数由0增加至41.18%时，流动活化能由36.69 kJ/mol增加到47.59 kJ/mol，悬浮液体系表观黏度相对温度变化越敏感。
Abstract:
In order to study the effect of nitroguanidine (NQ) spheroidization on rheological property of DNAN/NQ suspensions, the influence of solid content, shear rate, particle shape and gradation, process temperature on apparent viscosity of 2,4-dinitroanisole (DNAN)/NQ suspensions were investigated by rotating viscometer. Results show that the apparent viscosity increases slowly to the inflection point and then increases sharply with the increase of solid content of the suspension, and the critical mass fraction of spherical NQ and particle graded spherical NQ in DNAN are 55% and 70% respectively. With the increase of solid content, the influence of shear rate on the apparent viscosity of DNAN/NQ suspension system is more obvious, and the degree of pseudoplastic is higher. Under the same process conditions, the more irregular the particles are, the more the suspension system deviates from Newtonian fluid, and particle gradation can effectively reduce the pseudoplasticity of the suspension system. The influence of temperature on the apparent viscosity can be accurately described by the Arrhenius equation when the process temperature is in the range of 96-115 ℃. When mass fraction of solid in the suspension increases from 0 to 41.18%, flow activation energy increases from 36.69 kJ/mol to 47.59 kJ/mol, and apparent viscosity of the suspension is more sensitive to the change of temperature.

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备注/Memo

备注/Memo:
收稿日期：2021-03-09
第一作者：杨斐（1990-），男，硕士，助理研究员，主要从事熔铸炸药配方及工艺技术研究。E-mail：yanguu8821@163.com
通信作者：罗一鸣（1980－），男，博士，研究员，主要从事熔铸炸药配方及工艺技术研究。E-mail：iamrlym@126.com
更新日期/Last Update: 2021-10-04