Mg-PbO_2-Ti-PbO_2-PTFE复合薄膜烟火材料的制备及性能

Preparation and properties of Mg-PbO_2-Ti-PbO_2-PTFE composite pyrotechnic thin films

采用磁控溅射和真空蒸镀结合的方法,制备了Mg-PbO2-Ti-PbO2-PTFE复合薄膜烟火材料,利用X射线光电子能谱(XPS)分析了真空蒸镀的薄膜成分,并测定了薄膜材料与基底间的附着力。采用光纤法测量薄膜材料的燃烧线速度,分析了其燃烧过程。结果表明,利用真空蒸镀法可得到PbO2薄膜,复合薄膜烟火材料与基底有较好的附着力,复合薄膜烟火材料的燃烧线速度无约束条件下为(331.82±9.23)mm·s-1,有约束条件时为(435.98±18.60)mm·s-1,误差小于5%,燃烧时间与长度呈良好的线性关系。

Mg-PbO2-Ti-PbO2-PTFE composite pyrotechnic thin films were prepared by magnetron sputtering and vacuum evaporation.The component of the thin film was analyzed by X-ray photoelectron spectroscopy（XPS）.Combustion linear velocity was measured to analyze its combustion process,and bonding strength between the thin film and the substrate was measured.The results show that PbO2 thin film can be obtained by the vacuum evaporation,and good bonding strength exists between the composite pyrotechnic thin film and the substrate.The combustion linear velocity is（331.82±9.23） mm·s-1 under constraint-free condition and（435.98±18.60） mm·s-1 under constraint condition,with error smaller than 5%,meanwhile,combustion time and length have good linear relationship.