基于新型聚氨酯弹性体材料在PBX炸药载体中的应用  

Application of New Polyurethane Elastomer in PBX Explosive Carrier

作　　者：杨金想 孙晓乐 杨丰友 毕晓露 万力伦 Yang Jinxiang;Sun Xiaole;Yang Fengyou;Bi Xiaolu;Wan Lilun(No.2 Research Institute,Chongqing Hongyu Precision Industry Group Co.,Ltd.,Chongqing 402760,China)

机构地区：[1]重庆红宇精密工业集团有限公司研究二所,重庆402760

出　　处：《兵工自动化》2024年第1期26-29,66,共5页Ordnance Industry Automation

摘　　要：为提高高聚物粘结炸药(polymer bonded explosive,PBX)炸药载体的力学强度,在炸药的粘结剂体系中引入聚氨酯弹性材料进行聚醚/聚酯粘结剂高强度载体设计。通过调控聚氨酯弹性体制备过程中多元醇的比例和分子量、固化剂的种类,利用旋转流变仪和多功能万能材料试验机开展材料固化速率性能分析和固化后聚氨酯弹性体对端羟基聚丁二烯(hydroxyl-terminatedpolybutadiene,HTPB)粘结剂体系力学强度影响规律分析。结果表明:PCL_PTMG聚氨酯弹性体拉伸强度的大小与固化剂的固化速率相关;改变聚酯聚醚分子量对弹性体抗拉强度的影响不大;当聚酯聚醚的比例为4:1时,弹性体抗拉力学强度最优;聚氨酯弹性体增大了HTPB粘结剂体系强度。In order to improve the mechanical strength of polymer bonded explosive(PBX)explosive carrier,the polyurethane elastic material was introduced into the explosive binder system to design the high strength carrier of polyether/polyester binder.By adjusting the proportion and molecular weight of polyols and the type of curing agent in the preparation of polyurethane elastomer,the curing rate performance of the material was analyzed by rotary rheometer and multi-functional universal material testing machine,and the influence of cured polyurethane elastomer on the mechanical strength of hydroxyl-terminated polybutadiene(HTPB)binder system was analyzed.The results showed that the tensile strength of PCL_PTMG polyurethane elastomer was related to the curing rate of curing agent;the change of polyester polyether molecular weight had little effect on the tensile strength of elastomer;when the ratio of polyester polyether was 4:1,the tensile mechanical strength of elastomer was the best;polyurethane elastomer increased the strength of HTPB binder system.

关 键 词：PBX炸药载体 聚氨酯弹性体 固化速率 力学强度 HTPB粘结剂 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术]