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作 者:陈鹏燕 周春山 程熙宇[1] CHEN Peng-yan;ZHOU Chun-shan;CHENG Xi-yu(School of Safety and Emergency Management Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Shanxi Engineering Research Center for Mine Ventilation and Fire Prevention,Taiyuan University of Technology,Taiyuan 030024,China)
机构地区:[1]太原理工大学安全与应急管理工程学院,山西太原030024 [2]太原理工大学山西省矿井通风与火灾防治工程技术研究中心,山西太原030024
出 处:《应用化工》2023年第4期1010-1014,共5页Applied Chemical Industry
基 金:国家自然科学基金项目(51704207)。
摘 要:采用安东帕流变仪对CMC/AlCit/GDL防灭火凝胶交联体系进行时间扫描以及粘弹性测定,考察了各组分浓度对凝胶流变性能的影响,计算了不同时刻下流变模型的相关参数及其本构方程。结果表明,随着温度的升高,G′和G″均呈现出逐渐下降趋势;在实验范围内,CMC浓度变化对体系粘度影响最大,AlCit次之,GDL影响最小;CMC/AlCit交联体系随着剪切速率的增大,其粘度急剧下降,属于屈服假塑性流体;此外,建立了表观剪切力-剪切速率之间关系的本构方程。Antompa rheometer was used to determine the time scanning and viscoelasticity of CMC/AlCit/GDL gel crosslinking system.The effect of the component concentration on the gel rheology was investigated,and the relevant parameters and constitutive equations of the rheological model at different time were calculated.The results show that both G′and G″showed a gradually decreasing trend.Within the experimental range of the concentrations,the CMC concentration had the greatest influence on the system’s viscosity,followed by AlCit and then GDL.The system’s viscosity decreased rapidly with the increase in the shear rate,indicating that it is a yielding pseudoplastic fluid.Furthermore,constitutive equations for the relationship between the apparent shear force and shear rate were established.
关 键 词:CMC/AlCit/GDL凝胶 流变性能 浓度 本构方程
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