Effects of Coating Methods on PBX-RDX Impact Sensitivity
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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.
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陆铭,孙杰,陈煜,等.包覆方法对PBX-RDX撞击感度的影响[J].含能材料,2004,12(6):333-337. LU Ming, SUN Jie, CHEN Yu, et al. Effects of Coating Methods on PBX-RDX Impact Sensitivity[J]. Chinese Journal of Energetic Materials,2004,12(6):333-337.