文献类型：期刊文献

中文题名：静电纺丝技术制备ETPE基多元含能复合纤维

英文题名：Preparation of ETPE-Based Multicomponent Energetic Composite Fibers Using Electrostatic Spinning

作者：王慧[1,2];金晓明[3];章支梦[1];郑天宇[1];魏娇[2];王宇航[1];高浩峰[1];姜炜[1];张光普[1]

第一作者：王慧

机构：[1]南京理工大学化学与化工学院,江苏南京210094;[2]西安北方惠安化学工业有限公司,陕西西安710302;[3]北京联合大学北京市智能机械创新设计服务工程技术研究中心,北京100027

第一机构：南京理工大学化学与化工学院,江苏南京210094

年份：2024

卷号：47

期号：4

起止页码：334-343

中文期刊名：火炸药学报

外文期刊名：Chinese Journal of Explosives & Propellants

收录：CSTPCD;;EI(收录号：20242316221257);北大核心:【北大核心2023】；CSCD:【CSCD2023_2024】；

基金：国家自然科学基金(No.22105103)。

语种：中文

中文关键词：材料科学;含能复合纤维;制备工艺;静电纺丝;GAP-ETPE;CL-20;n-Al

外文关键词：physical chemistry;energetic composite fiber;preparation process;electrostatic spinning;GAP-ETPE;CL-20;n-Al

摘要：为了探索ETPE基多元含能复合纤维的静电纺丝制备工艺,以聚叠氮缩水甘油醚基热塑性弹性体(GAP-ETPE)为聚合物黏合剂,CL-20、纳米铝粉(n-Al)作为高能组分,采用静电纺丝技术制备了GAP-ETPE基超细含能复合纤维,并对溶剂、前驱液质量分数、固相组分配比等关键工艺参数进行了优化;采用扫描电子显微镜(SEM)和透射电子显微镜(TEM)对产物形貌进行了表征,采用DSC法分析了复合纤维的热分解性能;测试了复合纤维的机械感度。结果表明,GAP-ETPE基含能复合纤维静电纺丝制备最佳溶剂为丙酮,产物成丝均匀、表面光滑;在GAP-ETPE/CL-20质量比为3∶7、前驱液质量分数为50%时,二元超细含能复合纤维(CL_(x)-ETPE_(y)-Z)的成丝效果最优,平均直径约为2480nm;在铝粉质量分数为10%、前驱液质量分数为50%时,三元超细含能复合纤维(CL-Al_(m)-ETPE-Z)的成丝效果最优,平均直径约为930nm;相比于CL-20,CL_(7)-ETPE_(3)-50含能复合纤维热分解峰值温度提前了29℃,加入n-Al之后热分解峰值温度提前了32℃,且优于物理共混物(PM);与CL-20的感度(P=100%、H_(50)=17cm)相比,GAP-ETPE/CL-20和GAP-ETPE/CL-20/Al含能复合纤维的摩擦感度(32%和48%)和撞击感度(29cm和43cm)均大幅降低,且低于同配方的物理共混物。
In order to explore the electrostatic spinning process for the preparation of ETPE-based multicomponent energetic composite fibers,the GAP-ETPE-based ultrafine energetic composite fibers were prepared by electrospinning technique using poly(glycidyl azide ether) thermoplastic elastomer(GAP-ETPE) as the polymer binder and CL-20 and nano aluminum powder(n-Al) as the high-energy components,and the key process parameters such as solvent,mass fraction of precursor and solid phase composition ratio were optimized.The product morphology was characterized by scanning electron microscopy(SEM) and transmission electron microscopy(TEM).The thermal decomposition behavior of the composite fibers were analyzed by DSC method.The mechanical sensitivities of the composite fibers were tested.The results show that the best solvent for the preparation of GAP-ETPE-based energetic composite fiber electrospinning is acetone,where the products are uniform with smooth surface.The binary ultrafine energetic composite fibers(CL_(x)-ETPE_(y)-Z) have the best filament formation with an average diameter of about 2480nm when the mass ratio of GAP ETPE/CL-20 is 3∶7 and the mass fraction of precursor solution is 50%.When the ternary ultrafine energetic composite fiber of the mass fraction of aluminum powder is 10% and the concentration of precursor solution is 50%,the filament formation is optimal with an average diameter of about 930nm.Compared with CL-20,the peak thermal decomposition temperature of CL_(7)-ETPE_(3)-50 energetic composite fiber is advanced by 29℃.Also,the peak thermal decomposition temperature is advanced by 32℃ with the addition of n-Al,which is better than the Physical Co-Mixes(PM).The frictional sensitivities of GAP-ETPE/CL-20 and GAP-ETPE/CL-20/Al energetic composite fibers are 32% and 48%,respectively,and the impact sensitivities are 29cm and 43cm,respectively.Compared with CL-20 sensitivities(P=100%,H_(50)=17cm),the mechanical sensitivites of the two energetic composite fibers are siganificantly decreased.Both the frictional and impact sensitivities are lower than those of the physical blends of the same formulation.