【摘要】 <正> 根据凝胶色谱的基本原理,将一定量的9/7单基火药(0.5％以下)溶于四氢呋喃(THF)溶剂,此溶液流过色谱柱后,高分子的硝化纤维素(NC)和低分子的二苯胺(DPA)以及分子量较小的醇醚,先后被洗脱出来。本文采用外标法,对分离后的单基火药的主要成分NC和DPA进行定量测定。更多还原

【Abstract】 Nitrocellulose (NC) and dipheuylamine (DPA) in single-base propellant 9/7 have been separated and quantttattvely determined by GPC. The method is simple, fast and accurate.The chromatographic conditions were: the column: φ7.8×300mm, stainless steel tube packed with ultrastyragel 50 nm; mobile phase: tetrahy-drofuran(THP):detector:R-401 differential refrac-tometer. Coeffecients of variation of NC and DPA were 2.04 and 5.11, respectively.更多还原