HRP引发淀粉接枝水煤浆分散剂的合成及性能  

Preparation and properties of coal water slurry dispersant based on starch graft copolymers by HRP-catalyzed system

作　　者：张光华[1] 赵馨[1] 李俊国[1] ZHANG Guang-hua ZHAO Xin LI Jun-guo(Key Laboratory of Auxiliary Chemistry 8/Technology for Chemical Industry, Ministry of Education,Shaanxi University of Science Technology, Xi^an 710021？ China)

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,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2017年第1期85-91,共7页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(21176148);陕西省教育厅重点实验室科研计划项目(2010JS055);西安市科技计划项目(NC1613(1))

摘　　要：以淀粉(St)为主要原料,以对羟基苯磺酸钠(HBS)、丙烯酰胺(AM)以及丙烯酸钠(NaAA)为单体,在辣根过氧化物酶(HRP)/双氧水(H2O2)/乙酰丙酮(ACAC)的催化作用下,合成了两种淀粉接枝水煤浆分散剂St-HBS-AM和St-HBS-NaAA。通过红外光谱(FTIR),核磁共振氢谱(1 H-NMR),凝胶渗透色谱(GPC),热重分析(TGA)等对其结构与性能进行了表征,并考察了分散剂对水煤浆成浆性能的影响.结果表明,合成的分散剂对煤粉具有很好的润湿性,浆体煤粒间的静电斥力明显增强,水煤浆表现出较好的静态稳定性和流变性.当分散剂的用量为0.4%、制浆浓度为64%时,水煤浆的分散性和稳定性达到最佳,表观粘度分别为659mPa·s和751mPa·s,7天后的析水率分别为3.6%和4.4%.Two kinds of coal water slurry dispersant （St-HBS-AM and St-HBS-NaAA） were synthesized in the function of horseradish peroxidase （ HRP） /H2 〇2 / acetylacetone （ ACAC） using starch as raw material and 4-hydroxy benzosulfonate（HBS） ,acrylamide （AM） ,sodium acrylate （NaAA） as monomers. The copolymers were characterized by Fourier Transform In-frared Spectrum （FTIR） , nuclear magnetic resonance spectroscopy C1 H-NMR） , Gel Perme-ation Chromatography （GPC） and thermogravimetry analysis （TGA）. The effect of disper-sant on slurry preparation performance was discussed. The result showed that the dispersant solution had better wet ability for pulverized coal particle,the electrostatic repulsion between particles was significantly improved,the product had better effect on the rheology and static stability. The apparent viscosity would be 659 mPa·s and 751 mPa·s when amount of CWS is 64% and the dosage of dispersant is 0.4%. The bleeding ratio would be 3. 6% and 4. 4% after seven days.

关 键 词：辣根过氧化物酶 淀粉接枝共聚物 水煤浆 表观粘度 

分 类 号：TQ536[化学工程—煤化学工程]