【摘要】 采用直接反应及溶剂蒸发法,用PBT对硼粉进行了表面包覆。并通过透射电镜、精密酸度计、旋转粘度计等仪器对包覆效果进行了分析表征。由X光电子能谱和透射电镜图可以看出,经PBT包覆后,在硼粉的表面明显包覆了一层高分子化合物PBT,且包覆效果较好。酸度和粘度分析的结果表明,经PBT包覆后硼粉加水悬浊液体系的pH值明显增大,并有效的降低了HTPB体系的粘度。燃烧残渣分析结果表明,经包覆后的B的燃烧效率明显提高,残渣中B2O3和B的摩尔比由包覆前的122.7增加到18.51。更多还原

【Abstract】 The methods of direct reaction and solvent evaporation are adopted to coat boron powder with PBT. Transmission electron microscope,acidity instrument and rotary viscometer are used to analyze the properties of the coated boron powder. The results obtained by X ray photoelectron spectroscopy and transmission electron microscope show that the surface is perfect. The analysis results obtained by acidity instrument and rotary viscometer show that coating of PBT can improve the value of pH of the solution with boron and effectively reduce the viscosity of propellant. The analysis of combustion residues shows that the burning efficiency is obviously improved after coated by PBT,and the amount of substance proportion between B 2O 3 and B increases from 122.7 to 18.51.更多还原