Effect of Fluorine-containing Binder on the Completeness of Boron Powder Reaction during Explosion
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摘要:为研究含氟粘结剂对爆炸过程硼粉反应完全性的影响，首先，利用酸碱滴定法和X-射线荧光法，分别测试了含F2603和EVA粘结剂的含硼炸药爆炸反应后固体产物中硼元素的含量，然后，采用X-射线衍射法分析了除去B2O3之后的残渣组分物质形态，最后，通过对F2603的固相分解产物进行红外分析，反推出粘结剂分子断裂分解过程和产物，并进一步推测了含氟粘结剂对硼粉反应完全性的影响机制。结果表明：含氟粘结剂能使爆炸过程中硼粉的氧化率提高20%左右，作用机理为含氟粘结剂分解产生的氟化氢、氟元素等物质通过对硼粉氧化膜的消耗，有效改善了硼粉在爆炸过程中的氧化完全性，进而提高了含硼炸药爆炸反应的能量释放。
Abstract:In order to study the effect of fluorine-containing binder on the reaction completeness of boron powder during explosion, the content of boron element in solid products after the explosion reaction of boron-containing explosives containing F2603 and EVA binders was tested firstly, by acid-base titration and X-ray fluorescence method respectively. Then, X-ray diffraction method was used to further analyze the form of residue components after removing B2O3. Finally, through the infrared analysis of the solid phase decomposition products of F2603, the fracture decomposition process and products of the binder molecules were deduced, and the influence mechanism of the fluorine-containing binder on the reaction completeness of the boron powder was further speculated. The results show that the fluorine-containing binder can increase the oxidation rate of boron powder by about 20% during the explosion process, and the mechanism of action is that hydrogen fluoride, fluorine and other substances generated by the decomposition of the fluorine-containing binder can effectively improve the oxidation completeness of the boron powder, through the consumption of the oxide film of the boron powder, thereby improving the energy release of the explosive reaction of the boron-containing explosive.
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