硝基胍发射药制备工艺过程中的流变本构方程研究  

Rheological Constitutive Equation of Nitroguanidine-Based Gun Propellant during Production

作　　者：谢中元[1] 李萌[1] 赵凯晨 白静静 李振中 XIE Zhongyuan;LI Meng;ZHAO Kaichen;BAI Jingjing;LI Zhenzhong(Xi'an Modern Chemistry Research Institute,Shaanxi Xi'an,710065;School of Materials Science and Engineering,North University of China,Shanxi Taiyuan,030051;Department of Materials Engineering,Taiyuan Institute of Technology,Shanxi Taiyuan,030008)

机构地区：[1]西安近代化学研究所,陕西西安710065 [2]中北大学材料科学与工程学院,山西太原030051 [3]太原工业学院材料工程系,山西太原030008

出　　处：《爆破器材》2023年第6期34-38,共5页Explosive Materials

基　　金：西安近代化学研究所开放合作创新基金(204-J-2019-0387-1/6-18)。

摘　　要：以硝基胍发射药实际生产加工过程中不同时段的药料为研究对象,采用自主研发的固体推进剂专业双料筒毛细管流变仪测试药料的流变特性,并对流变特性曲线进行拟合,获得硝基胍发射药的流变本构方程。结果表明:硝基胍发射药具有典型的假塑性流体特征;延长捏合时间有利于高分子链充分溶胀;剪切应力-剪切速率曲线采用自构函数y=Aln^(2)x+Blnx+C时的拟合效果较好;剪切黏度-剪切速率曲线采用Williamson流变本构方程时的拟合效果好。The rheological properties of nitroguanidine-based gun propellant were tested using a self-developed professional double barrel capillary rheometer at different periods during the production of nitroguanidine-based gun propellant.The rheological characteristic curve was fitted,and the rheological constitutive equation of nitroguanidine-based gun propellant was obtained.The results indicate that nitroguanidine-based gun propellant exhibits typical pseudoplastic fluid characteristics.Extending the kneading time is beneficial for the full swelling of the polymer chain.The fitting results of the shear stress-shear rate curve by the self-constructing function y=Aln^(2)x+Blnx+C are good.When using the Williamson rheolo-gical constitutive equation,the fitting results of the shear viscosity-shear rate curves are good.

关 键 词：硝基胍发射药 毛细管流变仪 流变性能 本构方程 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] TQ562[化学工程—炸药化工] O373[理学—流体力学]