EEA基三组元热塑性推进剂的流变性能  

Rheological Properties of EEA-based Three-component Thermoplastic Propellant

作　　者：罗聪 郭滢泷 黄谱 史钰 王沫茹 孙鑫科 黄晨 肖思鑫 黄超群 李伟 LUO Cong;GUO Ying-long;HUANG Pu;SHI Yu;WANG Mo-ru;SUN Xin-ke;HUANG Chen;XIAO Si-xin;HUANG Chao-qun;LI Wei(National Key Laboratory of Aerospace Chemical Power,Xiangyang Hubei 441003,China;Hubei Institute of Aerospace Chemical Technology,Xiangyang Hubei 441003,China)

机构地区：[1]航天化学能源全国重点实验室,湖北襄阳441003 [2]湖北航天化学技术研究所,湖北襄阳441003

出　　处：《火炸药学报》2025年第3期271-278,I0006,共9页Chinese Journal of Explosives & Propellants

基　　金：国家自然科学基金(No.22375058);科技部重点研发计划(No.2022YFB4603100);国家自然科学基金(No.22275051)。

摘　　要：以乙烯-丙烯酸乙酯共聚物基热塑性弹性体(EEA)为基体、铝粉和高氯酸铵为含能固体填料,采用声共振混合(RAM)制备了固体含量为86.5%的热塑性复合固体推进剂;利用流变学方法测定了热塑性黏合剂/推进剂的流变参数,系统研究了热塑性黏合剂和热塑性推进剂的流变性能,包括表观黏度、模量、触变性、应变扫描、频率扫描、温度扫描和时间扫描等。结果表明,所制备的推进剂具有良好的成型性能和流平性能;EEA基热塑性推进剂具有明显的触变性,其表观黏度随剪切速率的增加而降低,呈现出明显的假塑性流体特性;EEA基热塑性推进剂的黏弹性具有明显的频率和温度依赖性,在低频时表现出第二平台,在高温下表现为固-液转变;与热固性推进剂不同的是,热塑性推进剂药浆的模量和黏度随时间基本保持不变。Thermoplastic composite solid propellant with solid content of 86.5%was prepared by resonance acoustic mixing(RAM)process by using ethylene ethyl acrylate copolymer based thermoplastic binder(EEA)as matrix,aluminum powder and ammonium perchlorate as energetic solid fillers.The rheological parameters of thermoplastic binder/propellant were measured by rheological method.The rheological properties of thermoplastic binder and thermoplastic propellant were studied systematically,including apparent viscosity,modulus,thixotropy,strain scan,frequency scan,temperature scan and time scan.The results show that the prepared propellant has good formability and flow property.The EEA-based thermoplastic propellants exhibit obvious thixotropy,and the apparent viscosity decreases with the increase in the shear rate,showing obvious pseudoplastic fluid characteristics.The viscoelastic properties of EEA-based thermoplastic propellants are frequency-and temperature-dependent,showing a second plateau at low frequency and solid-liquid transition at high temperature.Unlike thermoset propellants,the modulus and viscosity of thermoplastic propellants remain essentially constant over time.

关 键 词：物理化学 EEA基热塑性推进剂 热塑性弹性体 流变性能 声共振混合 RAM 黏弹性 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] V512[航空宇航科学与技术—航空宇航推进理论与工程]