WPU-g-SAN的合成及其对HNIW的包覆  

Preparation of WPU-g-SAN and Its Coating on HNIW

作　　者：廖肃然[1,2] 罗运军[1] 孙杰[3] 谭惠民[1] 

机构地区：[1]北京理工大学材料学院,北京100081 [2]河南工程学院材料与化学工程系,河南郑州450007 [3]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》2012年第2期155-160,共6页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金资助(批准号:10276007)

摘　　要：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(1H NMR)、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13.6 cm提高到28.5 cm。In order to reduce the sensitivity of hexanitrohexaazaisowurtzitane（HNIW）,the waterborne polyurethane grafted styrene and acrylonitrile copolymer（WPU-g-SAN） were synthesized from isophorone diisocyanate（IPDI）,2-hydroxyethyl methacrylate（HEMA）,styrene（S） and acrylonitrile（AN） as raw materials by seeded emulsion polymerization in situ.The cast films obtained from WPU-g-SAN were characterized by Fourier transform infrared（FTIR）,wide-angle X-ray diffraction（WAXD）,nuclear magnetic resonance（1H NMR） and dynamic mechanical analysis（DMA）.The results showed that the title copolymer was amorphous and exhibited a certain degree of phase separation.HNIW and HNIW coated with the WPU-g-SAN were examined by X-ray photoelectron spectroscopy（XPS） and scanning electron microscopy（SEM）.The impact sensitivity was tested by method of GJB772A-1997.The experimental results indicated that the characteristic height H50 of HNIW coated with WPU-g-SAN increases from 13.6 cm to 28.5 cm.

关 键 词：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 

分 类 号：TQ560.1[化学工程—炸药化工]