Alloying reaction of Ti/B high-energy self-assembled microspheres to improve combustion performance

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2025-03-29 DOI:10.1016/j.colsurfa.2025.136762

Bidong Wu, Shanghao Du, Fan Wang, Zhihua Xue, Yu Lei, Chongwei An

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Abstract

The alloying reaction between highly reactive metals can release substantial energy, highlighting its potential in energetic materials. This study presents the preparation of Ti/B high-energy self-assembled microspheres using microdroplet technology, with nitrocellulose and fluorine rubber as composite binders. The properties of these high-energy microspheres were examined under three conditions: titanium excess, stoichiometric balance, and boron excess. The results demonstrate that the microspheres possess a narrow particle size distribution, high circularity, excellent flowability, and improved safety. Ignition tests revealed that the microspheres achieve stable self-sustained combustion through the alloying reaction of the raw materials, producing a high-temperature flame of approximately 1650 °C. Additionally, increasing boron content was found to enhance flame area, raise output temperature, and accelerate burning rate. These findings offer significant insights for the design of high-energy microsphere formulations.

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高活性金属之间的合金化反应可释放出大量能量，凸显了其在高能材料中的潜力。本研究采用微滴技术，以硝化纤维素和氟橡胶为复合粘合剂，制备了 Ti/B 高能自组装微球。在钛过量、化学平衡和硼过量三种条件下考察了这些高能微球的特性。结果表明，微球具有粒度分布窄、圆度高、流动性好和安全性高的特点。点火试验表明，微球通过原材料的合金化反应实现了稳定的自持燃烧，产生了约 1650 °C 的高温火焰。此外，硼含量的增加还能扩大火焰面积、提高输出温度并加快燃烧速度。这些发现为高能微球配方的设计提供了重要启示。

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.