Preparation of the core-shell HMX@CS microparticles by biological excitation:Excellent hydrophobic-oleophilic properties and decreased impact sensitivity effectively

作     者：Yue-qi Li Heng Zhai Ping Ye Xing-quan Zhang Chang-ping Guo Yue-qi Li;Heng Zhai;Ping Ye;Xing-quan Zhang;Chang-ping Guo

作者机构：Sichuan Co-Innovation Center for New Energetic MaterialsSouthwest University of Science and Technology(SWUST)Mianyang621010PR China Analysis and Testing Center of Southwest University of Science and Technology(SWUST)Mianyang621010PR China 

出 版 物：《Defence Technology（防务技术）》 (Defence Technology)

年 卷 期：2022年第18卷第5期

页      面：855-861页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0703[理学-化学] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China (Grant NO.11702268) Sichuan provincial key S&T Special Projects (Grant NO.19DZX0106) 

主　　题：HMX Core-shell Sensitivity Hydrophobic-oleophilic Mechanical properties 

摘      要：Inspired by the phenomenon of superhydrophobic plants and animals in nature,1,3,5,7-tetranitro-1,3,5,7-tetrazocane(HMX)@copper stearate(CS)core-shell composites with similar properties was prepared.A rough shell layer on the surface of the HMX was observed by scanning electron microscopy(SEM),and a series of in-depth characterization confirmed the successful generation of CS and the coreshell structure of the samples.Differential scanning calorimeter(DSC)proves that the crystal transition temperature(204℃)and high temperature decomposition exothermal temperature(284℃)of HMX@CS is almost unchanged compared with pure HMX,which means HMX and CS have good compatibility.Then,the H50 of the samples also increased continuously(16.6 cm→33.7 cm)when the CS shell content increased from 1%to 5%,indicating that the CS shell has a certain buffering performance,and CS will absorb some heat and melt under the stimulation of impact due to its low melting point,which improved impact sensitivity of HMX effectively further.Moreover,HMX@CS has excellent hydrophobic and oleophilic performance,shows excellent wettability with lipid binder,and samples with appropriate CS shell content can continue to combustion stably after covering water.This waterproof and low sensitivity coating provides a new way for the development of multifunctional energetic materials.