基于羟丙基纤维素制备乙醇凝胶推进剂  

Preparation of Ethanol Gel Propellant Based on Hydroxypropyl Cellulose

作　　者：吴其稳 张华驰 姚锋 陈泓宇 施浙杭 赵辉[1] 李伟锋[1] 刘海峰[1] WU Qiwen;ZHANG Huachi;YAO Feng;CHEN Hongyu;SHI Zhehang;ZHAO Hui;LI Weifeng;LIU Haifeng(National Research and Development Center for Energy and Coal Gasification Technology,Shanghai Coal Gasification Engineering and Technology Research Center,East China University of Science and Technology,Shanghai 200237,China;Sinochem Quanzhou Petrochemical Co.,Quanzhou 332501,Fujian,China;Shanghai Institute of Space Propulsion,Shanghai 201112,China)

机构地区：[1]华东理工大学国家能源煤气化技术研发中心,上海煤气化工程技术研究中心,上海200237 [2]中化泉州石化有限公司,福建泉州332501 [3]上海空间推进研究所,上海201112

出　　处：《华东理工大学学报（自然科学版）》2024年第2期185-191,共7页Journal of East China University of Science and Technology

基　　金：国家自然科学基金(22378114)。

摘　　要：传统的乙醇胶凝剂甲基纤维素(MC)和羟丙基甲基纤维素(HPMC)必须加入一定比例的水作为溶剂才能形成凝胶。为了制备高性能的乙醇凝胶绿色推进剂,采用羟丙基纤维素(HPC)作为无水胶凝剂,并对其制备的乙醇凝胶推进剂进行剪切测试、屈服应力测试、应变扫描和频率扫描等测试。结果表明,HPMC凝胶需加入质量分数为6%的水作为溶剂,其临界胶凝剂质量分数为10%;HPC凝胶不需要加水,其临界胶凝剂质量分数为8%。当胶凝剂质量分数为8%时,HPMC、HPC凝胶的屈服应力分别在2.5 Pa左右和24.8 Pa,HPC凝胶具有更大的屈服应力;同时HPC比HPMC具有更大的线性黏弹区域,临界应变更大。Conventional ethanol gelling agents methyl cellulose(MC)and hydroxypropyl methyl cellulose(HPMC)have to be added with a certain proportion of water as a solvent to form the gel.In order to prepare high performance ethanol gel green propellants,hydroxypropyl cellulose(HPC)was proposed as an anhydrous gelling agent.The rheological properties of different ethanol gels were tested by conducting shear tests,yield stress tests,strain scans and frequency scans.The results show that HPMC gels require the addition of more than 6%mass fraction of water as solvent and their critical gelling agent mass fraction is 10%,while HPC gels do not require the addition of water and their critical gelling agent mass fraction is 8%.At a shear rate of 100 s−1,the shear viscosities are 2.6 Pa·s,6.9 Pa·s and 11.1 Pa·s for HPC mass fraction of 6%,8%and 10%,respectively.At a mass fraction of 8%gelling agent,the yield stress of HPMC and HPC gel is around 2.5 Pa and 24.8 Pa,respectively,and HPC gel has a greater yield stress.HPC has a larger linear viscoelastic region than HPMC with a larger critical strain change.Then it has a stronger internal structure,which is beneficial for storage and transportation.Compared with traditional gelling agents,HPC is a good anhydrous ethanol gelling agent as it can be used to obtain the same viscosity of ethanol gels without water or under smaller quantities.

关 键 词：乙醇凝胶 羟丙基纤维素(HPC) 黏度 屈服应力 流变性能 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] TQ560.7[化学工程—炸药化工]