Rheological properties of supramolecular methylhydrazine gel fuel
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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