Effect of sintering temperature, ratio and particle size on the reaction of Al-teflon under quasi-static compression

被引：0

作者：

Feng B. ^{[1
]}

Fang X. ^{[1
]}

Li Y.-C. ^{[1
]}

Wang H.-X. ^{[1
]}

Dong W. ^{[2
]}

机构：

[1] College of Field Engineering, PLA University of Science and Technology, Nanjing

[2] The Equipment Research Institute of the Rocket Force, Beijing

来源：

Hanneng Cailiao/Chinese Journal of Energetic Materials | 2016年 / 24卷 / 12期

关键词：

Al-Teflon; Crysallinity; Quasi-static compression; Reactive material;

D O I：

10.11943/j.issn.1006-9941.2016.12.014

中图分类号：

学科分类号：

摘要：

To determine the effect of sintering temperature, ratio and particle size on the reaction phenomenon of Al-Teflon under quasi-static compression, the quasi-static compression test of Al-Teflon was conducted using an universal testing machine and the stress-strain curves and reaction ratio data of test specimen under the influence of sintering temperature, ratio and particle size were obtained. The micro morphology of Al-Teflon was analyzed by a scanning electron microscope(SEM). Results show that the sintering temperature, equivalence ratio and particle size can affect the mechanical behavior of Al-Teflon, change the deformation of material and crack formation mode and affect the excitation of the initial reaction under quasi-static compression. At the same time, the ratio affects the completeness of reaction, an incomplete reaction phenomenon happens when the ratio deviates from the chemical equilibrium ratio, and the reaction intensity and reaction ratio increase with decreasing the Al particle size. The material-process range of Al-Teflon reaction occurring under the quasi static compression is that the sintering temperature is between 320℃ and 370℃, Al mass fraction is between 16% and 36%, and the particle size of Al powder is less than 12-14 μm. © 2016, Editorial Board of Chinese Chinese Journal of Energetic Materials. All right reserved.

引用

页码：1209 / 1213

页数：4

共 14 条

[1]

Hunt E.M., Pantoya M.L., Impact sensitivity of intermetallic nanocomposites: A study on compositional and bulk density, Intermetallics, 8, pp. 1612-1616, (2010)

[2]

Ames R., Vented Chamber Calorimetry for Impact-Initiated Energetic Materials, 43rd AIAA Aerospace Sciences Meeting and Exhibit, (2005)

[3]

Feng B., Fang X., Li Y.-C., Et al., Reaction of Al-Teflon under 10<sup>-2</sup> s<sup>-1</sup> compression strain rate, Chinese Journal of Energetic Materials(Hanneng Cailiao), 24, 6, pp. 599-603, (2016)

[4]

Eakins D., Thadhani N., Shock compression of reactive powder mixtures, International Materials Reviews, 54, 4, pp. 181-213, (2009)

[5]

Xu S., Yang S., Zhang W., The mechanical behaviors of polytetrafluorethylene/Al/W energetic composites, Journal of Physics Condens Matter, 21, 28, (2009)

[6]

Osborne D.T., Pantoya M.L., Effect of Al particle size on the thermal degradation of Al/Teflon mixtures, Combustion Science and Technology, 179, 8, pp. 1467-1480, (2007)

[7]

Willis M., Drotar J.T., Effect of aluminum particle size on the impact initiation of pressed PTFE/Al composite rods, Shock Compression of Condensed Matter-2007, (2007)

[8]

Ames R., Energy release characteristics of impact-initiated energetic materials, MRS Online Proceeding Library, 896, 3, pp. 321-333, (2004)

[9]

Brown E., Rae P., Orler E., Et al., Fracture and damage evolution of fluorinated polymers, Computing in Science & Engineering, 1, 5, pp. 32-38, (2004)

[10]

Hu T.Y., Characterization of the crystallinity of polytetrafluoroethylene by X-ray and IR spectroscopy, differential scanning calorimetry, viscoelastic spectroscopy and the use of a density gradient tube, Wear, 82, 3, pp. 369-376, (1982)

← 1 2 →