摘要
该文针对3～5μm和8～14μm波段,以Ba(NO_3)_2-Mg-C_(42)H_(48)O_7和PTFE(聚四氟乙烯)-Mg-C_(42)H_(48)O_7为基础配方,开展了配方组成、质量流率、燃烧温度对红外辐射烟火剂辐射强度影响的试验研究,并讨论了有关试验结果。文中指出PTFE是3～5μm和8～14μm波段都具有较高辐射强度的良好氧化剂,而可燃物C对于具有选择性辐射的富燃配方不能显著提高3～5μm和8～14μm波段的辐射强度;提高质量流率达一定程度后有效辐射率则下降;高温对提高近红外辐射强度适宜,但对远红外不可取。
The effect of composition, mass flow rate and combustion tem-perature on radiation intensity of Ba(NO_3)_2- Mg - C_(42)H_(48)O_7 and PTFE - Mg -C_(42)H_(48)O_7 were studied experimentally in 3～5μm and 8～14μm wavelengthregions, and the results obtained are discussed. For both of the two regions,PTFE (polytetrafluoroethylene ) is found to be an excellent oxidizer having ahigh radiant intensily (RI ). However for fuel-rich compositions with selectiveradiation the content of C in the fuel does not increase RI significantly in theabove two regions. When the mass flow rate reaches a certain value, the radi-ation efficiency begins to decrease with increasing rate. It is shown that thetemperature rise can heighten the intensity near infrared, but not in the farinfrared region.
关键词
烟火剂
红外辐射
辐射强度
可燃物
pyrotechnic compound
infrared radiation
radiant intensity measurements
flammable mixture
oxidizing agent
pyrotechnic compound formulation
test result
