[1]LIU Dawei,YANG Minhui,DU Huashan.Analysis of the Influence on Emulsion Sensitization Process for Bulk Emulsion Explosive[J].爆破器材,2018,47(02):1-5.[doi:10.3969/j.issn.1001-8352.2018.02.001]
　,现场混装乳化炸药化学敏化影响因素分析[J].EXPLOSIVE MATERIALS,2018,47(02):1-5.[doi:10.3969/j.issn.1001-8352.2018.02.001]
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Analysis of the Influence on Emulsion Sensitization Process for Bulk Emulsion Explosive()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
47
期数:
2018年02
页码:
1-5
栏目:
基础理论
出版日期:
2018-03-23

文章信息/Info

Title:
现场混装乳化炸药化学敏化影响因素分析
文章编号:
5171
作者:
LIU Dawei;  YANG Minhui;  DU Huashan
Explosive Co., Ltd.,China Gezhouba Group (Chongqing, 401121)
Author(s):
刘大维；杨敏会；杜华善
中国葛洲坝集团易普力股份有限公司（重庆,401121）
关键词:
emulsion explosive;  foaming;  chemical sensitization;  catalyst
Keywords:
乳化炸药; 发泡; 化学敏化; 催化剂
分类号:
TD235.2+1
DOI:
10.3969/j.issn.1001-8352.2018.02.001
文献标志码:
A
摘要:
Chemical sensitization is a widely applied, convenient and rapid method in foaming the emulsion matrix. However, compared with physical way, chemical method is more complicated, which were rarely researched systematically. In this study, the relation of various involving factors, which include the amount of NaNO2, pH value, different types of acid, catalysts and temperature, and the emulsion foaming process, were investigated. The following were the findings: the foaming process was accelerated obviously by increasing the concentration of NaNO2 and temperature in matrix to improve the activity of NaNO2 ; a higher rate of foaming was attained if lowering the pH value of matrix, via applying stronger acid or increasing the concentration of weak acid; low temperature sensitization was achieved through introducing M2+ as a positive catalyst; when the concentration of M2+ reached 35% mass fraction in the sensitizer, a fastest rate was achieved;higher foaming rate resulted in more NO x production and the matrix presented yellow color especially under a lower pH of the matrix; too low pH in the dispersed phase leads to a poor quality of emulsion; since big useless bubbles were easily formed under a high rate of foaming, for an optimum sensitizing result, the rate should be controlled.
Abstract:
化学敏化是一种广泛采用的、方便快捷的敏化方式，相对物理敏化而言，化学敏化受较多因素影响，但缺乏对影响因素的系统性分析。研究了NaNO2用量、pH、不同强度酸、促进剂、温度等对化学敏化的影响。研究表明，通过提高体系中的NaNO2浓度、温度等，提高NaNO2的活度，能够显著提高发泡速率；采用中强酸酸度调节剂要比添加柠檬酸或醋酸获得更快的发泡速率；降低体系的pH能够促进发泡反应进行；采用M2+作为敏化促进剂，能够实现低温敏化，其质量分数达到35%时，敏化速率最快。研究过程中还发现，发泡速率过快，容易产生较多的NO x气体，乳化基质发黄，酸性较强时情况更为严重；分散相的pH过低，乳化基质质量较差，极易破乳。发泡速率过快，非常容易产生无效大气泡，生产时应适当控制发泡速率，以期获得最佳的敏化效果。

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备注/Memo

备注/Memo:
收稿日期：2017-04-27
作者简介：刘大维（1988－），男，硕士研究生，研究方向为炸药工艺开发。E-mail:423569461@qq.com
更新日期/Last Update: 2018-03-23