The effect of compounding methods of binder on the thermal properties of boron powder
In order to study the effect of mixing methods of energetic binder nitrocellulose and micron boron powder on the thermal oxidation properties of boron powder,the effects of different compounding methods(simple mechanical mixing,casting film compounding,agglomerating and granulating modification)on the thermal properties of 1 μm boron powder were studied by means of thermogravimetric analysis.Furthermore,the effect of the content of nitrocellulose on the thermal oxidation performance of energetic binder was studied,and the oxidation results were analyzed by the combustion model of boron powder.The results showed that agglomerating and granulating modification had the best effect on the oxidation performance of boron.The oxidation temperature of boron powder was enhanced about 0.1℃,29.4℃and 112.3℃by simple mechanical mixing,casting film compounding and agglomerating modification,respectively.The final oxidation rate of boron powder was increased by 3.4%and 13.8%by simple mechanical mixing and agglomeration granulation,respectively,while the casting film compounding had no significant improvement.The oxidation performance of boron powder was enhanced with the increase of nitrocellulose content.
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