超支化水煤浆分散剂的合成与性能研究  

Synthesis of hyperbranched dispersant from coal water slurry and its chemical properties

作　　者：张光华[1] 韩文静[1] 强轶[1] 刘龙[1] 尚婷[1] 赵方[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,西安710021

出　　处：《安全与环境学报》2012年第6期22-26,共5页Journal of Safety and Environment

基　　金：国家自然科学基金项目(21176148);陕西省自然科学基金项目(2009JZ002);陕西省教育厅重点实验室项目(2011JS020)

摘　　要：以甲醇为溶剂,采用发散合成法,以脱氢枞胺、丙烯酸甲酯和乙二胺为原料,通过迈克尔加成反应和酰胺化缩合反应合成了一种低代超支化分子骨架。以这种低代超支化骨架为起始剂,与氯乙酸反应制备了一种新型的松香基超支化水煤浆分散剂。采用红外光谱和核磁分析对产物进行结构表征,同时用这种新型的分散剂对陕西神府煤制浆,考察了制得的水煤浆的表观黏度、Zeta电位和稳定性等性能。结果表明:松香基超支化水煤浆分散剂可以制备具有较高质量分数的水煤浆,在浆体质量分数为67%,分散剂用量为0.4%(分散剂占浆体的质量分数)时,水煤浆黏度仅为980mPa.s。这种新型分散剂明显改善了水煤浆的成浆性能,增强了浆体的静态稳定性,并具有很好的降黏效果。In this article, we have introduced a new type of disper- sant we have gained from the high-concentrated coal water slurry （CWS）. To be exact, we have synthesized lower-generation hyper- branched molecular skeletons from the methanol solvent out of raw materials of dehydroabietylamine, methyl acrylate, and ethylenedi- amine through the divergent analysis. The actual products we have developed can be stated as follows： firstly, we have synthesized 0.5 generation hyperbranched organic molecules via Michael addition re- action with dehydroabietylamine as the principal acrylate raw materi- al. Secondly, we have synthesized the 1.0 generation hyperbranched organic molecules through amidation condensation reaction by taking O. 5 generation hyperbranched molecule and ethylenediamine as the ofiginal materials. And, finally, the lower generation hyperbranched molecular skeleton, can further be found to result in 1.0 generation hyperbranched organic molecules. The new-type dispersant of rosin hyperbranched from the coal water slurry has been synthetically made by using skeleton as initiator by making it react with the chloroactic acid. And, after that, we have applied infrared spectroscope and hy- drogen nuclear magnetic resonance spectroscope to characterization of the 0.5 generation and 1.0 generation organic molecules and rosin hyperbranched dispersants. Moreover, we have done the slurry per- formance test with Shenfu coal for their viscosity, Zeta potential and static stability of the slurry. The results of our investigation indicate that the rosin hyperbranched dispersant has ability in reducing the viscosity of the coal slurry for this purpose at lower dosages. When the slurry concentration is lowered to 67 %, and the dosage of the rosin hyperbranched dispersant was 0.4% （ quantity fraction） of the slurry, its viscosity tends to be only at 980 mPa＂ s. This shows that the rosin hyperbranched dispersant helps to improve the behavior of coal water slurry, enhance the static stability, and reduce the effects

关 键 词：煤化学工程 脱氢枞胺 水煤浆 超支化分子 新型分散剂 

分 类 号：TQ536.9[化学工程—煤化学工程]