含能材料2025，Vol.33Issue(6)：581-588,8.DOI:10.11943/CJEM2024290
表面改性硼及硼铝复合粉的制备和性能
Preparation and Properties of Surface-modified Boron and Boron-aluminum Composite Powder
伍俊英 1王健宇 1刘新航 1胡良 1尚伊平 1刘丹阳 1陈朗1
作者信息
- 1. 北京理工大学爆炸科学与安全防护全国重点实验室,北京 100081
- 折叠
摘要
Abstract
Boron powder is often used as a combustible agent in energetic materials due to its high calorific value,volume calorif-ic value and clean combustion products.However,the surface oxide layer of boron powder makes it difficult to ignite and brings low combustion efficiency.In order to improve the ignition and combustion performances,boron powder was wetly milled in hot acetonitrile to remove the surface oxide layer for obtaining pre-treated boron powder with high activity,according to the good solubility of boron oxide in acetonitrile solvent.Acetonitrile and n-hexane were used as a dual control agent,and then the pretreated boron powder and highly active aluminum were performed a secondary ball milling to finally prepare the boron-aluminum composite powder with surface-activated boron.The morphological characteristics,thermogravimetric,igni-tion and combustion characteristics of boron and composite powder were studied.The results showed that the content of surface boron oxide of boron powder was reduced after pretreatment with acetonitrile,pretreatment boron powder was easier to react with oxygen when heated in air,and the percentage of mass increase was 25.6%more than that of untreated boron powder.Af-ter pretreatment with hot acetonitrile,the surface boron oxide content decreased,the active boron content increased,and the ig-nition and combustion performances were significantly improved.The mass of composite powder with boron-aluminum mass ra-tio of 60/40 increased by 93%when heated in air,the ignition temperature was 738.1℃at low heating rate,and the particle combustion time was 11.2 ms.关键词
改性硼粉/硼铝复合粉/预处理/点火/燃烧Key words
modified boron powder/boron-aluminum powder/pretreatment/ignition/combustion分类
武器工业引用本文复制引用
伍俊英,王健宇,刘新航,胡良,尚伊平,刘丹阳,陈朗..表面改性硼及硼铝复合粉的制备和性能[J].含能材料,2025,33(6):581-588,8.
