胶氢制备技术研究  

Preparation technology of gelled liquid hydrogen

作　　者：雷刚 苏嘉南 刘海生 安刚[1,2] Lei Gang Su Jia＇ nan Liu Haisheng An Gang(State Key Laboratory of Technologies in Space Cryogenic Propellants, Beijing 100028 Beijing Institute of Aerospace Testing Technology, Beijing 100074, China)

机构地区：[1]航天低温推进剂技术国家重点实验室,北京100028 [2]北京航天试验技术研究所,北京100074

出　　处：《低温工程》2017年第5期6-11,共6页Cryogenics

基　　金：航天低温推进剂技术国家重点实验室开放研究课题(SKLTSCP1207)

摘　　要：根据胶氢动力学稳定条件,推导出胶凝剂颗粒尺寸与密度的函数关系,并给出不同浓度下,液氢能够成胶的颗粒临界尺寸。从聚集稳定性出发,以颗粒与氢分子相互作用关系解释了胶氢成胶能够实现及其稳定相对较弱的原因。进行了胶氮、胶氢制备实验,但结果不是很理想。通过分析,原因在于低温密封条件下的高速搅拌目前难以实现,凝胶剂颗粒过大,超过能够形成胶体的直径要求。The function relationship between the size and the density of gellant particle was formulated according to the dynamic stability conditions of gelled liquid hydrogen. The critical size of gallant particle with which the hydrogen could get was provided at different concentrations. The reason for the formation of the gelled liquid hydrogen was explained by the interaction between gellant particle and hydrogen molecular. The weak stability of gelled liquid hydrogen was analyzed based on the aggregation stability of gelled liquid hydrogen. Experiments were conducted to prepare gelled liquid nitrogen and gelled liquid hydrogen, but the results are not very ideal. The reason is that it is difficult to achieve high speed stirring under the condition of cryogenic sealing, and the gellant particle size is too big to form colloids.

关 键 词：胶氢 胶氮 胶凝剂颗粒尺寸 沉降 

分 类 号：V51[航空宇航科学与技术—航空宇航推进理论与工程]