基于逾渗理论对乳胶基质老化过程的分析

doi:10.11949/j.issn.0438-1157.20170088

化工学报 ›› 2017, Vol. 68 ›› Issue (7): 2938-2945.DOI: 10.11949/j.issn.0438-1157.20170088

• 材料化学工程与纳米技术 • 上一篇下一篇

基于逾渗理论对乳胶基质老化过程的分析

张阳¹, 汪旭光^1,2, 王阳¹, 王尹军²

1 北京科技大学土木与资源工程学院, 北京 100083;
2 北京矿冶研究总院, 北京 100160

收稿日期:2017-01-19 修回日期:2017-03-27 出版日期:2017-07-05 发布日期:2017-07-05
通讯作者: 汪旭光
基金资助:
国家自然科学基金项目（50704005）。

Aging analysis of emulsion explosive matrix based on percolation theory

ZHANG Yang¹, WANG Xuguang^1,2, WANG Yang¹, WANG Yinjun²

1 School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2 Beijing General Research Institute of Mining and Metallurgy, Beijing 100160, China

Received:2017-01-19 Revised:2017-03-27 Online:2017-07-05 Published:2017-07-05
Contact: 10.11949/j.issn.0438-1157.20170088
Supported by:
supported by the National Natural Science Foundation of China (50704005).

摘要/Abstract

摘要：

针对乳化炸药基质在储存过程中出现的析晶破乳现象，基于逾渗理论，建立了乳胶基质老化过程的逾渗模型。采用高低温循环法加速乳胶基质老化，并使用光学显微镜及激光粒度仪对乳胶基质进行观测。结果表明，所建逾渗模型符合实际，其中逾渗阈值p_c可以合理地解释乳胶基质的老化程度。将该模型用于先前的实验研究，分析了乳化炸药在老化过程中电导率出现变化的原因。该模型为研究乳胶基质的微观结构与宏观稳定性能之间的关系提供了一种新方法。

关键词: 老化, 乳化炸药, 逾渗理论, 稳定性, 结晶

Abstract:

Considered crystallization and demulsification phenomena of emulsion explosive (EE) matrix during storage, a percolation model for EE matrix in aging process was established by the percolation theory. Accelerated aging of EE matrix was run by freeze-thaw cycles and EE matrix after every cycle was examined by optical microscope and laser particle analyzer. The observation of crystallization process in EE matrix showed that the site percolation cluster model reflected well with real situation, which the percolation threshold p_c represented a rational indication of EE matrix aging degree. Combined with data in previous studies, the percolation model was used to analyze the critical phenomena of electrical conductivity change in EE during aging process. When cluster percentage reached to p_c, the infinite cluster was formed such that EE changed from insulator to conductor. This percolation model can be a new method for studying relationship between microstructure and macrostability of EE matrix.

Key words: aging, emulsion explosive, percolation theory, stability, crystallization

中图分类号:

TQ560.7
O384

张阳, 汪旭光, 王阳, 王尹军. 基于逾渗理论对乳胶基质老化过程的分析[J]. 化工学报, 2017, 68(7): 2938-2945.

ZHANG Yang, WANG Xuguang, WANG Yang, WANG Yinjun. Aging analysis of emulsion explosive matrix based on percolation theory[J]. CIESC Journal, 2017, 68(7): 2938-2945.

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基于逾渗理论对乳胶基质老化过程的分析

Aging analysis of emulsion explosive matrix based on percolation theory

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