Study on oriented induction/suppression modification of crystal morphology for primary explosives

IF 13.2 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2025-03-08 DOI:10.1016/j.cej.2025.161393

Junda Huo, Dongxu Zhang, Debin Ni, Shan Wang, Qianyou Wang, Li Yang

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引用次数: 0

Abstract

The crystal morphology of energetic materials significantly affects their sensitivity, initiation capability, and flowability, which directly determine the performance of weapons and equipment. Despite great efforts having been devoted to the morphological control of primary explosives, the mechanism insights into morphological modification are still in infancy stage. Herein, combining experimental results with theoretical calculations, we elucidated the morphological control process of a novel environmentally friendly lead-free primary explosive named bis-(ethylenediamine) copper (II) 5-nitrotetrazolate [Cu(EDA)₂(NT)₂]. Through directional suppression/induction by different surfactants on crystal face growth, three completely different shaped crystals of Cu(EDA)₂(NT)₂ (lamellar, hollow rhombic toroidal, and uniform rhombic block) were prepared, ultimately achieving precise control over the crystal morphology. Among them, the block-shaped crystals of CMC-Cu(EDA)₂(NT)₂, modified with carboxymethyl cellulose, exhibited significantly improved stacking density, thermal stability, and initiation capability. This work not only significantly optimized the modification of Cu(EDA)₂(NT)₂, but also revealed the complex interaction mechanism between surfactants and crystal surfaces, laying an important scientific foundation for tailoring morphology, and enhancing performance of primary explosives crystals

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定向诱导/抑制改性炸药晶体形态的研究

含能材料的晶体形态对其灵敏度、起爆能力和流动性有重要影响，直接决定武器装备的性能。尽管对初生炸药的形态控制已经进行了大量的研究，但对形态改变机理的认识仍处于初级阶段。本文将实验结果与理论计算相结合，阐明了新型环境友好型无铅炸药双-（乙二胺）铜（II） 5-硝基四氮酸盐[Cu(EDA)2(NT)2]的形态控制过程。通过不同表面活性剂对晶面生长的定向抑制/诱导，制备了三种形状完全不同的Cu(EDA)2(NT)2晶体（片层状、空心菱形和均匀菱形块状），最终实现了对晶体形态的精确控制。其中，羧甲基纤维素修饰的CMC-Cu(EDA)2(NT)2块状晶体的堆积密度、热稳定性和引发能力均有显著提高。本研究不仅对Cu(EDA)2(NT)2的改性进行了显著优化，而且揭示了表面活性剂与晶体表面复杂的相互作用机理，为调整炸药晶体形态、提高炸药晶体性能奠定了重要的科学基础

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.