爆轰法制备与固载钛基氧化物的研究

doi:10.15541/jim20160576

摘要/Abstract

摘要：

利用钛酸丁酯与硝酸铵溶液制备的含钛凝胶跟黑索金混合后获得混合炸药, 然后在密闭的爆轰反应釜内引爆柱状混合炸药, 同时将一铝板放置于药柱正下方研究爆轰产物的固载问题。收集到的样品用X射线衍射仪、透射电镜以及扫描电镜进行了表征, 发现样品中含有FeTiO₃, 少量的金红石、锐钛矿及Al₂O₃。钛基氧化物颗粒呈球形, 尺寸大小在微米级别。从扫描电镜分析, 钛基氧化物颗粒被成功地固载于铝板之上, 颗粒约10 µm。爆轰法能够很方便地制备钛基氧化物及制备颗粒-板结构材料。

关键词: 爆轰法, 钛基氧化物, 颗粒-板结构, 固载

Abstract:

Ti-doped gel, prepared by hydrolysis of tetrabutyl titanate and ammonium nitrate solution, was mixed with hexogen to make mix explosive. The mix explosive was detonated in a closed kettle in cylindrical charge with presence of aluminum plate, and then Ti-based oxides were fabricated. The samples were characterized by XRD, TEM, EDX, and SEM. The results showed that samples contained FeTiO₃, a few of rutile, anatase, and Al₂O₃. The Ti-based oxides particles were spherical in micrometer level scale. Ti-based oxides were successfully immobilized on an aluminum plate driven by Ti-contained detonation wave, and the size of particles on the plate was 10 μm. The present results suggest that the detonation method provides an easy way to prepare Ti-based oxides and fabricate particle-plate structure for recycling materials synchronously.

Key words: detonation method, Ti-based oxides, particle-plate structure, immobilization

中图分类号:

O389

闫鸿浩, 赵铁军, 李晓杰, 吴林松. 爆轰法制备与固载钛基氧化物的研究[J]. 无机材料学报, 2017, 32(6): 667-672.

YAN Hong-Hao, ZHAO Tie-Jun, LI Xiao-Jie, WU Lin-Song. Preparation and Immobilization of Ti-based Oxides by Detonation Method[J]. Journal of Inorganic Materials, 2017, 32(6): 667-672.

图/表 7

Fig. 1 Schematic diagram of preparing Ti-doped gel precursor and Ti-based oxides powders

Fig. 2 Schematic of detonation reaction kettle①Extract opening; ② Top flange; ③ Connection of vacuum gauge; ④ Large flange; ⑤ Vessel cover; ⑥ mix explosive; ⑦ Air intake

Fig. 3 XRD patterns of samplesThe mass ratios of Ti-doped gel and RDX in S1 and S2 are 1.5:1, 1:1, respectively

Fig. 4 EDX pattern of samplesThe mass ratios of Ti-doped gel and RDX in S1 and S2 are 1.5:1, 1:1, respectively

Fig. 5 TEM images of samples(a) and (b) are from S1 and S2, respectively

Fig. 6 Aluminum plate morphologies after denotation reaction in preparation of S2(a) Aluminum plate after detonation reaction in reaction kettle; (b) A piece of aluminum plate for SEM characterization

Fig. 7 SEM images of TiO2 particles and particle-plate materials from sample S2(a): TiO2 particles; (b): Overall morphology of particle-plate; (c) and (d): Enlarged picture of local areas of particle-plate structure; (e): Morphology of corroded area on aluminum plate surface; (f): Element composition of area selected in Fig. (e)

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