淀粉接枝共聚物水煤浆分散剂制浆性能的研究  

PERFORMANCE IN MAKING SLURRY FOR COAL-WATER SLURRY OF STARCH GRAFT COPOLYMER

作　　者：赵方[1] 张光华[1] 韩文静[1] 强轶[1] 

机构地区：[1]陕西科技大学化学与化工学院,西安硕士生710021

出　　处：《煤炭转化》2012年第2期51-55,共5页Coal Conversion

基　　金：国家自然科学基金资助项目(21176148);陕西省科学技术研究发展计划项目(2009K02-06)

摘　　要：在氧化还原体系中,以淀粉为主链,以苯乙烯和丙烯酸羟乙酯为单体,通过无皂乳液聚合法制备了一种梳状淀粉接枝共聚物水煤浆分散剂,通过红外光谱、Zeta电位和动态接触角对其结构和性能进行表征和分析,并考察了分散剂的用量和水煤浆浓度对神华煤制浆性能的影响.分散剂用量为0.5%(质量分数),水煤浆浓度为65%(质量分数)时,水煤浆的分散性能最佳,表观黏度为852mPa.s.The starch graft copolymer was prepared by the radical polymerization using styrene（St） and hydroxyethyl acrylate （HEA） as graft monomers in oxidation-reduction initiator system. The copolymer was characterized and analyzed hy infrared spectrum （FT-IR）, dynamic contact angle and Zeta potential. It was investigated that the added quantity of the dispersant and the amount of CWS affect the Shenhua coal slurry preparation performance. The experiment demonstrates that CWS show the best behavior and the apparent viscosity would be 852 mPa·s when the amount of CWS is 65% and the dosage of dispersant produced on optimum conditions is 0. 5%.

关 键 词：淀粉接枝共聚物 水煤浆 分散剂 表观黏度 

分 类 号：TQ517.43[化学工程]