Using polyvinylidene fluoride to improve ignition and combustion of micron-sized boron powder by fluorination reaction

作     者：Lingqi ZHU Baozhong ZHU Xiaolong ZHAO Yanan WANG Mengchen LI Jiuyu CHEN Yunlan Sun Lingqi ZHU;Baozhong ZHU;Xiaolong ZHAO;Yanan WANG;Mengchen LI;Jiuyu CHEN;Yunlan Sun

作者机构：School of Petroleum and Natural Gas EngineeringChangzhou UniversityChangzhou 213164China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2023年第36卷第10期

页      面：64-76页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financial support provided by the National Natural Science Foundation of China (No.52376093) the Project of Jiangsu Graduate Practice Innovation,China (Nos. SJCX22_1435 and SJCX22_1436) sponsored by Qing Lan Project of Jiangsu Province,China 

主　　题：Agglomeration Coating Combustion performance Fluorination reaction Polyvinylidene fluoride 

摘      要：Boron has a promising application in the field of propellants due to its high calorific ***,the difficulty of ignition and the poor combustion efficiency of boron(B)have severely limited its efficient *** response to this issue,this paper proposes to improve the ignition and combustion performance of micron-sized boron by the Polyvinylidene Fluoride(PVDF)*** effect of PVDF content on the B combustion performance was systematically studied using a Thermogravimetry-Differential Scanning Calorimetry(TG-DSC),a Transmission Electron Microscope(TEM),an X-Ray Diffractometer(XRD),a laser Particle Size Analyzer(PSA),and a high-speed *** results show that PVDF can significantly reduce the initial oxidation temperature of B powder and increase its reaction *** the PVDF content is 23wt%,the reaction heat and the combustion intensity of B powder reach the maximum and are significantly higher than those of the uncoated B ***,the fluorination reaction that occurs during the combustion process not only can effectively shorten the combustion time of B powder,but also has a positive effect on its flame intensity and propagation speed,and it significantly reduces B particle agglomeration,which improves the combustion efficiency *** study lays the foundation for the application of PVDF modified B in B-based solid propellants.