Thermal and combustion behavior of Al-MnO_(2) nanothermite with poly(vinylidene fluoride-co-hexafluoropropylene) energetic binder  

作　　者：Jia-xing Song Tao Guo Miao Yao Jia-lin Chen Wen Ding Feng-li Bei Xiao-nan Zhang Qin Yin Jun-yi Huang Chang-hao Li 

机构地区：[1]College of Field Engineering,PLA Army Engineering University,Nanjing,210001,China [2]School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing,210094,China [3]Tellhow Sci-Tech CO.,LTD.,Beijing,100032,China

出　　处：《Defence Technology（防务技术）》2021年第4期1289-1295,共7页Defence Technology

基　　金：This work was supported by the National Natural Science Foundation,project no.51704302;was also supported by China Scholarship Council,no.201903170086.

摘　　要：Fluoropolymers get increasing attention in energetic materials application due to the high fluorine content.To explore the effect of poly(vinylidene fluoride-co-hexafluoropropylene)(P(VDF-HFP))on Al/MnO_(2) nanothermite,the samples with different contents are prepared and characterized by SEM,TGDSC,XRD,and their ignition and combustion behavior are tested and recorded.The results show that P(VDF-HFP)as an energetic binder can combine the nanothermite components together,even exist in the gaps.The integrity of energetic materials has been improved.Thermal analysis shows that the addition of P(VDF-HFP)greatly changes the thermal reaction processes,and the exothermic peaks appear early,but the utilization of fuel and oxidizer is not efficient from the XRD results.Furthermore,the appropriate addition of P(VDF-HFP)can directly reduce the ignition energy threshold and increase the combustion time,which is necessary for the potential ignition charge application.The possible reasons for above phenomena are discussed and analyzed.This research provides a reference for improvement of thermitebased ignition charge formulation.

关 键 词：Nanothermite FLUOROPOLYMERS COMBUSTION Thermal analysis 

分 类 号：TQ560.1[化学工程—炸药化工]