التفاصيل البيبلوغرافية
| العنوان: |
乳液自组装法制备 AI/B/PTFE 含能微球及其性能表征. (Chinese) |
| Alternate Title: |
AI/B/PTFE Energetic Microspheres Prepared by Emulsion Self-assembly and Their Performance Characterization. (English) |
| المؤلفون: |
师鹏翔, 王建, 陈杰, 张行泉, 邓勇军, 王军 |
| المصدر: |
Chinese Journal of Explosives & Propellants; 2024, Vol. 47 Issue 5, p453-460, 8p |
| Abstract (English): |
To explore the preparation process and combustion performance of high active metal energetic microspheres, Al/B/ PTFE energetic microspheres were prepared by emulsion self-assembly technology with Viton as binder, polytetrafluoroethylene (PTFE), boron powder (B) and aluminum powder (Al) as high-energy components. The volatilization temperature of solvent. the type of emulsifier, the volume ratio of water phase to oil phase and stirring speed were optimized. The morphology of Al/ B/PTFE energetic microspheres was characterized by scanning electron microscopy (SEM). The thermal decomposition proper- ties of Al/B/PTFE energetic microspheres were analyzed by TG-DSC method. The combustion reaction performance of the mi- crospheres was characterized by high-speed photography and closed explosive bomb device. The results show that the optimum preparation process of Al/B/PTFE energetic microspheres is water bath temperature of 25 C. emulsifier of PVA, water-oil vol- ume ratio of 80: 30 and stirring speed of 700 r/min. The prepared Al/B/PTFE energetic microspheres have uniform particle size, high sphericity and controllable particle size, and the main particle size distribution range is about 300~900 µm. The dispersion, reaction heat, combustion flame area and pressure output performance of the microspheres increase first and then decrease with an increase in the particle size. The maximum reaction heat, the maximum flame area, and the maximum peak pressure of Al/B/PTFE energetic microspheres are 1097.97J/g. 186.06 cm2 and 213.3 kPa, which are 1.77 times. 5. 16 times and 1.37 times of the physical mixed samples, respectively. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
为了探究高活性金属含能微球的制备工艺以及燃烧性能,以Viton为黏结剂,聚四氟乙烯(PTFE)、硼粉(B)和 铝粉(AI)为高能组分,采用乳液自组装技术制备了AI/B/PTFE含能微球,并对溶剂的挥发温度、乳化剂的种类、水相 和油相的体积比和搅拌速度等工艺进行了优化;采用扫描电子显微镜(SEM)对AI/B/PTFE含能微球形貌进行了表 征;采用TG-DSC法分析了AI/B/PTFE含能微球的热分解性能;通过高速摄影和密闭爆发器表征了AI/B/PTFE含能微 球的燃烧反应性能。结果表面,水浴温度为25℃、乳化剂为PVA、水油比为80:30和搅拌速度为700r/min是AI/B/ PTFE 含能微球的最佳制备工艺;所制备的Al/B/PTFE 含能微球的粒径均匀、球形度高且粒径可控,主要粒径分布范 围在约300~900m;微球的流散性、反应热、燃烧火焰面积和压力输出性能随着粒径的增加,出现先增加后减弱 的现象;AI/B/PTFE含能微球的最大反应热,最大火焰面积和最高峰值压力为1097.97J/g.186.06cm和213.3 kPa. 分别是物理混合样品的1.77倍、5.16倍和1.37倍。 [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
