不同相对分子质量磺酸盐型水煤浆分散剂的制备及其分散性能  

Preparation of sulfonate type dispersants with different molecular weight for coal-water slurry and its dispersing performance

作　　者：米小慧[1] 李小瑞[1] 杨育成 李培枝[1] 王晨[1] 

机构地区：[1]陕西科技大学轻化工助剂化学与技术重点实验室,陕西西安710021 [2]陕西延长石油安源化工有限公司,陕西榆林719300

出　　处：《日用化学工业》2013年第6期424-427,468,共5页China Surfactant Detergent & Cosmetics

基　　金：国家自然科学基金资助项目(50973057);陕西省自然科学基金资助项目(2012JQ2004;2012JQ2005);陕西省重大科技创新资助项目(2011ZKC04-3);陕西省教育厅科技计划资助项目(2011JK0609)

摘　　要：以2-丙烯酰胺基-2-甲基丙磺酸(AMPS)-丙烯酸(AA)-衣康酸(IA)为原料,通过改变引发剂K2S2O8和NaHSO3的用量,应用水溶液聚合制备了不同相对分子质量的三元IA/AA/AMPS分散剂。以3种水煤浆为研究对象,考察不同相对分子质量的三元IA/AA/AMPS分散剂对各煤种的分散性能,对聚合物的相对分子质量、水煤浆的表观黏度与ζ电位进行了测定。结果表明,当三元IA/AA/AMPS分散剂相对分子质量为2.4万时,可以使64%的3种煤浆的表观黏度分别降低至584,360和609 mPa·s;各种煤粒的表面ζ电位分别达到-44.6,-39.1和-42.8 mV。Sulfonate type terpolymer （IA/AA/AMPS） dispersants with different molecular weight for coal - water slurry were prepared by using 2 - acrylamide - 2 - methylpropanesulfonic acid （ AMPS ） , acrylic acid （AA） and itaconic acid （IA） as starting materials while the difference of molecular weight of the dispersants was realized through the change of dosage of the initiators K2S20s and NaHSO3. The effect of IA/AA/AMPS dispersants with different molecular weight on the dispersing performance for three kinds of pulverized coal - water slurry was studied. Molecular weight of the terpolymer （IA/AA/AMPS）, apparent viscosity and potential of the coal - water slurry were determined respectively. Results showed that, in case the molecular weight of terpolymer IA/AA/AMPS dispersant achieves 24 000,apparent viscosity of the three kinds of coal - water slurry （with solid mass fractions all at 64% ） can he reduced to 584,360 and 609 mPa s respectively; and ζ potential of coal partical surface of the three kinds of：coal achieves - 44.6, - 39, 1 and - 42. 8 mV respectively.

关 键 词：磺酸盐型分散剂 相对分子质量 表观黏度 Ζ电位 

分 类 号：TQ423.92[化学工程]