包覆方法对PBX-RDX撞击感度的影响  

Effects of Coating Methods on PBX-RDX Impact Sensitivity

作　　者：陆铭[1] 孙杰[2] 陈煜[1] 罗运军[1] 谭惠民[1] 

机构地区：[1]北京理工大学材料科学与工程学院,北京100081 [2]中国工程物理研究院化工材料研究所,四川绵阳621900

出　　处：《含能材料》2004年第6期333-337,共5页Chinese Journal of Energetic Materials

基　　金：总装备部预研基金项目(编号:41328030307)

摘　　要：以异佛尔酮二异氰酸酯(IPDI)、聚醚(DL-400、TMN-450)、2,2.二羟甲基丙酸(DMPA)等为原料合成了水性聚氨酯(WPU)乳液,采用FTIR表征其结构;分别采用乳液聚合和加入10％明矾水溶液破乳的方法包覆了RDX。SEM观察包覆结果表明:破乳方法中,1％WPU乳液包覆RDX效果最好;1％WPU乳液聚合方法包覆效果稍差。测定了各样品的撞击感度,破乳法包覆的H50为82.2 cm,乳液聚合法包覆的H50为59.0 cm。实验证明采用水性聚氨酯破乳方法包覆RDX,能够显著降低RDX的感度,提高H50的值,效果优于乳液聚合法包覆。Waterborne polyurethane ( WPU ) latex was prepared with toluene-2 , 4-diiso-cyanate ( TDI ) , polyether ( DL-400,TMN-450) and 2,2-bis-( hydroxymethyl)-propionic acid (DMPA), and characterized by FTIR. Two kinds of methods, depositing WPU latex by adding 10% alum solution and latex polymerization were used to coat RDX. SEM results indicat that RDX is coated the best with 1 % WPU coating content in destroying latex way; while RDX is coated worst by method of latex polymerization. Special height H50 of RDX coated with WPU was determined by impact sensitivity test. And result indicate that H50 of RDX before coating is 22. 3 cm; that H50 of RDX coated with 1% WPU in destroying latex way is 82. 2 cm; that H50 of RDX coated with 1% WPU by method of latex polymerization is 59. 0 cm. Conclusion will be drawn through experiments that coating RDX by method of polymerization-depositing WPU latex can effectively improve the property of its sensitization, and increase the value of H50, whose effects are predominant to that of polymerization.

关 键 词：材料科学 破乳 乳液聚合 包覆 RDX 撞击感度 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术]