航天推进技术研究院主办
[1]孙晓涵,宋隆,左向春,等.超分子甲基肼凝胶燃料流变性能研究[J].火箭推进,2024,50(05):75-81.[doi:10.3969/j.issn.1672-9374.2024.05.007]
SUN Xiaohan,SONG Long,ZUO Xiangchun,et al.Rheological properties of supramolecular methylhydrazine gel fuel[J].Journal of Rocket Propulsion,2024,50(05):75-81.[doi:10.3969/j.issn.1672-9374.2024.05.007]
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SUN Xiaohan,SONG Long,ZUO Xiangchun,et al.Rheological properties of supramolecular methylhydrazine gel fuel[J].Journal of Rocket Propulsion,2024,50(05):75-81.[doi:10.3969/j.issn.1672-9374.2024.05.007]
超分子甲基肼凝胶燃料流变性能研究
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
50
期数:
2024年05期
页码:
75-81
栏目:
目次
出版日期:
2024-11-13
- Title:
- Rheological properties of supramolecular methylhydrazine gel fuel
- 文章编号:
- 1672-9374(2024)05-0075-07
- Keywords:
- supermolecule; methylhydrazine; gel propellant; noncovalent interaction force; rheological property
- 分类号:
- V51
- 文献标志码:
- A
- 摘要:
- 流变性能研究是凝胶推进剂研究的一项重要内容,其结果可为推进剂的雾化、燃烧等性能研究提供基础。超分子甲基肼凝胶燃料内部以氢键等非共价相互作用力作为支点,形成网状结构,其流变性能与胶凝剂含量和温度条件密切相关。实验结果表明,胶凝剂含量越高,体系越稳定。胶凝剂质量分数为1.2%时,超分子甲基肼凝胶燃料可在得到最高的能量性能的同时保证稳定性。随着体系温度的升高,形成凝胶网络结构的氢键作用力会变弱,对分子的限制作用也会减弱。体现在流变性能上,就是随着温度的增加,体系黏度和剪切应力降低; 在达到50 ℃时,超分子甲基肼凝胶燃料已处于凝胶-溶液转变的临界点。超分子甲基肼凝胶燃料还具有剪切恢复性,在经历10次剪切过程后,黏度仅有少量降低。
- Abstract:
- The study of rheological properties is an important content of gel propellant research, and its results can provide a basis for the study of atomization and combustion properties of propellant. The interior of supramolecular methylhydrazine gel propellant is supported by non-covalent interaction forces such as hydrogen bonds, forming a network structure, and its rheological properties are closely related to the content of gelling agent and temperature conditions. The experimental results show that the higher the content of gelling agent, the more stable the system is. When the mass fraction of gelling agent is 1.2%, supramolecular methylhydrazine gel fuel can obtain the highest energy performance and ensure stability at the same time. With the increase of system temperature, the hydrogen bonding force forming gel network structure will weaken, and the limiting effect on molecules will also weaken. Reflected in the rheological properties, the viscosity and shear stress of the system decrease with the increase of temperature. When it reaches 50 ℃, supramolecular methylhydrazine gel fuel is at the critical point of gel-solution transition. Supramolecular methylhydrazine gel fuel also has shear recovery, and its viscosity decreases only a little after 10 shear processes.
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备注/Memo
收稿日期:2024- 05- 17修回日期:2024- 08- 13
基金项目:国家重点项目
作者简介:孙晓涵(1997—),女,硕士,研究领域为凝胶推进剂。
更新日期/Last Update:
1900-01-01