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以异佛尔酮二异氰酸酯(IPDI)、聚氧化丙烯二醇(PPG)、苯乙烯(St)、甲基丙烯酸丁酯(BMA)和丙烯酸丁酯(BA)等为主要原料,采用种子乳液聚合法合成了WPU/SBB(水性聚氨酯/苯丙)复合乳液;然后以此为高能炸药——HNIW(六硝基六氮杂异伍兹烷)颗粒的包覆剂和胶粘剂。采用红外光谱(FT-IR)法、X-射线衍射(XRD)法及差示扫描量热分析(DSC)法等手段对WPU/SBB复合乳液的结构进行了表征,并采用扫描电镜(SEM)、特性落高值(H50)和X-射线光电子能谱(XPS)法等分析了WPU/SBB复合乳液对HNIW的包覆效果。结果表明:包覆后HNIW的H50由13.6 cm升至34.8 cm,说明该环保型WPU/SBB复合乳液对HNIW具有明显的降感作用。
The main raw materials were isophorone diisocyanate (IPDI), polyoxypropylene glycol (PPG), styrene (St), butyl methacrylate (BMA) and butyl acrylate (BA) Synthetic WPU / SBB (aqueous polyurethane / styrene acrylic) composite emulsion; then as a high-energy explosive - HNW (hexanitrohexaazaisowurtzitane) particles of the coating agent and adhesive. The structure of WPU / SBB composite emulsion was characterized by means of FT-IR, XRD and DSC, and the structure of WPU / SBB composite emulsion was characterized by scanning electron microscopy (SEM) (H50) and X-ray photoelectron spectroscopy (XPS) were used to analyze the coating effect of WPU / SBB composite emulsion on HNIW. The results showed that the H50 of HNIW after coating increased from 13.6 cm to 34.8 cm, indicating that the environmentally friendly WPU / SBB composite emulsion had a significant desensitization effect on HNIW.