球形团聚硼颗粒的强度研究

Intensity of Spherical Agglomerated Boron Particles

以端羟基聚丁二烯(HTPB)为原材料,乙酸乙酯为溶剂,采用机械搅拌方法对无定形硼粉进行团聚改性处理,对球形团聚硼颗粒制备过程中不同工艺条件下的颗粒强度的影响因素进行了研究,获得了强度较高的球形团聚硼颗粒,最佳工艺条件为:搅拌速度为90r·min-1,团聚工艺温度为30℃,黏结剂与硼粉的质量配比为10/90,固化催化剂的质量含量为0.02%,在此工艺条件下制备出的团聚硼颗粒形貌较好,颗粒强度较高。

The amorphous boron powders were agglomerated to high-intensity spherical particles by means of mechanical mixing with hydroxyl terminated polybutadiene as raw materials and with acetic ether as solvent. The factors affecting the intensity of particles during the agglomerated process were analyzed. The optimal process conditions were obtained： the rotation speed is 90 r.min^-1 ; the agglomerated process temperature is 30 ℃ ; the mass ratio of binder and amorphous boron powder is 10/90 and the mass content of solidification catalyst is 0.02% ; the morphological structure of agglomerated boron particles prepared by the method is preferable and the intensity of particles is higher.