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含能材料  2012 

WPU-g-SAN的合成及其对HNIW的包覆

DOI: 10.3969/j.issn.1006-9941.2012.02.004

Keywords: 高分子化学,接枝型水性聚氨酯(WPU-g-SAN),原位种子乳液聚合,六硝基六氮杂异伍兹烷(HNIW,CL-20),撞击感度

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Abstract:

为了降低六硝基六氮杂异伍兹烷(HNIW,CL-20)的撞击感度,利用原位种子乳液聚合,以异佛尔酮二异氰酸酯(IPDI)、甲基丙烯酸-β-羟乙酯(HEMA)、苯乙烯(S)、丙烯腈(AN)等为原料合成了用于降感的接枝型水性聚氨酯(WPU-g-SAN),采用红外光谱(FTIR)、核磁共振(1HNMR)、X-射线衍射(WAXD)及动态力学分析(DMA)对产物结构进行表征。结果显示所得产物为非晶结构,且存在微相分离。用制备的产物对HNIW进行包覆,通过X-射线光电子能谱(XPS)、扫描电镜(SEM)对包覆效果进行评价,并用GJB772A-1997方法测试了HNIW包覆前后的撞击感度。结果表明,包覆后的HNIW的特性落高H50由13.6cm提高到28.5cm。

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