The effect of AlNPs on the rheological properties of gel propellant based on new energetic cellulose
The nitromethane(NM) gels were prepared with carboxymethyl cellulose nitrate(CMCN) as a gelator.The law of different rheological properties of AlNPs/CMCN/NM gels caused by the content of aluminum nanoparticles(AlNPs) was investigated.The yield stress, thixotropy, creep and thermosensitivity of AlNPs/CMCN/NM gels were investigated by linear rheological methods.The flow data, creep data, angular frequency data and thermosensitivity data of gels were fitted by Power-Law model, Herschel-Bulkley model, Cross model, Burger model, Carreau-Yasuda model and Andrade-Eyring model respectively.The experimental results show that the phase interface interaction between nano-particles and gels gets enhanced due to the addition of AlNPs, and the gel strength increases.The non-newtonian index n of AlNPs/CMCN/NM gels are less than 0.50.With the increase of AlNPs content, the n value decreases and shear thinning characteristics gets enhanced, and the structure strength of AlNPs/CMCN/NM gels becomes stronger, expressing that the yield stress and thixotropy recovery increase gradually.The viscous compliance and elastic compliance of gels decrease while the proportion of elastic compliance increases when the content of AlNPs increases.The viscous responsivity and the internal friction decrease gradually while elastic responsivity increases due to the increase of AlNPs content.At last, the activation energy of A1NPs/CMCN/NM gels decrease and temperature stability become stronger with the increase of AlNPs content.
energetic gelator carboxymethyl cellulose nitrate aluminum nanoparticles rheological property gel propellant
NIE Zhongyuan SHAO Ziqiang LV Shaoyi Li yang
School of Materias Science and Engineering,Beijing Institute of Technology,Beijing 100081,China Xian Modern Chemistry Research Institute,168 Zhangba Rd.East,Xian 710000,China
国际会议
成都
英文
62-70
2013-09-24（万方平台首次上网日期，不代表论文的发表时间）