无定形硼粉的团聚技术

Agglomerated Technology for Amorphous Boron Powder

采用干法硼团聚工艺制取球形度良好、粒径为0．105～0．190mm的团聚硼粒子。研究了各种因素对制备团聚硼粒子的影响，并找出最佳的工艺参数。结果表明，无定形硼粉经过团聚改性后，团聚硼颗粒的表面形态得到改善。提高离心机转子的转速，团聚硼颗粒的密度增大；当固化时间较长、固化温度较低和稀释剂选择得当时，团聚硼颗粒的球形度较好，无定形硼粉经HTPB团聚后，硼粉表面明显包覆着一层HTPB薄膜。

The agglomerated boron with good roundness and the particle size range from 0. 105mm to 0.19mm, was prepared by a dry method. The effects of various factors on the preparation of agglomerated boron were studied in detail and the best craftwork parameters determined. The results show that the surface shape of agglomerated boron was greatly improved when amorphous boron was modified by means of agglomerated technology. The density of agglomerated boron increased with the increase of rotate speed of centrifuge rotor. Agglomerated boron has good roundness in the condition of long solidified time, low solidified temperature and appropriate solvent. After agglomerating the amorphous boron powder with HTPB, the surface of boron powder has a membrance coated by HTPB.