摘要
采用溶剂-非溶剂重结晶法和晶形控制技术制备超细HNS，并对晶形控制剂的种类和用量、加料方式等因素在重结晶细化过程中对HNS微晶形貌和粒度的影响进行了分析。结果表明，上述几种因素对超细HNS的形貌、粒径及团聚的影响较大。对于0．40g的HNS原料，采用3mL质量分数0．5％的淀粉分解产物（DT）作为晶形控制剂，针管滴加药液，所得晶体大多为椭球形及球形小颗粒，部分呈规则块状，流散性好，粒径分布在100～400nm且无团聚；采用1．8mL质量分数1％的聚氧乙烯醚类化合物（PT）作为晶形控制剂，针管滴加药液，所得晶体绝大多数为球形小颗粒，粒径分布范围较窄，最小粒径可达50nm。细化后HNS的耐热均匀性略有提高，并且能够被标准黑药柱点燃，其50％发火高度约为12cm。
The ultrafine HNS was prepared by solvent and non-solvent method and the controlling technology about crystal morphology, and the influencing factors about categories, dosage of surfactants and injecting styles were analyzed. Results show that the above factors have important effect on the morphology, particle size and agglomeration in the crystallization process. Injecting by syringe needle, free-running elliptoid and spherical HNS grain from 100 to 400nm were obtained in the condition of 0. 40g raw materials HNS and 3. 0mL 0. 5% DT surfactant, and the least particle diameter with 50nm and spherical HNS grain with narrow particle-size distribution was obtained in the condition of 0. 40g raw materials HNS and 1. 8mL 1% polyoxyethylene ether （PT）. The ultrafine particle of HNS has higher heat resisting evenness and can be ignited by black powder grain. The 50% inflammation height is about 12cm.
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2010年第1期19-23,共5页
Chinese Journal of Explosives & Propellants
关键词
物理化学
六硝基艹氐
溶剂-非溶剂法
超细化
晶体形貌
physical chemistry
hexanitrostilbene
solvent and non-solvent method
ultrafine,crystal morphology
