Investigation on thermal characteristics and desensitization mechanism of improved step ladder-structured nitrocellulose

作     者：Cheng-kai Pu Yu Luan Ming-jun Yi Zheng-gang Xiao Cheng-kai Pu;Yu Luan;Ming-jun Yi;Zheng-gang Xiao

作者机构：Key Laboratory of Special Energy MaterialsMinistry of EducationSchool of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjing210094People's Republic of China 

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

年 卷 期：2023年第20卷第2期

页      面：93-102页

核心收录：

学科分类：0806[工学-冶金工程] 0817[工学-化学工程与技术] 08[工学] 0826[工学-兵器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported in part by the National Natural Science Foundation of China(No.22075146) 

主　　题：Nitrocellulose Decomposition Desensitization Ladder structure Thermal characteristic Polyethylene glycol 

摘      要：Nitrocellulose,or cellulose nitrate,has received considerable interest due to its various applications,such as propellants,coating agents and gas ***,its high mechanical sensitivity caused many accidents during its storage and usage in *** this work,two kinds of insensitive step ladderstructured nitrocellulose(LNC)with different nitrogen contents were *** products were characterized by FT-IR,Raman,XRD,SEM,elemental analysis,TGA,DSC,accelerating rate calorimeter analysis(ARC),and drop weight test to study their molecular structure,thermal characteristics and desensitization *** with raw nitrocellulose,LNC has a sharper exothermic peak in the DSC and ARC *** H50values of the two kinds of LNC increased from 25.76 to 30.01 cm for low nitrogen content and from 18.02 to 21.84 cm for high nitrogen content,*** results show that the ladder-structure of LNC which provides regular molecular arrangement and a soft buffer made with polyethylene glycol could affect the energy releasing process of LNC and reduce the sensitivity of *** LNC provides an alternative to be used as a binder in insensitive propellants formulation.