淀粉接枝共聚物水煤浆分散剂的合成及其与煤粒的作用机理  

Synthesis of coal-water slurry dispersant based on starch graft copolymers and the effects on coal surface

作　　者：尚婷[1] 张光华[1] 朱军峰[1] 张安琪[1] 王西锋[1] 

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

出　　处：《选煤技术》2012年第6期7-12,共6页Coal Preparation Technology

基　　金：国家自然科学基金资助项目(编号:21176148);陕西省自然科学基金重点项目(编号:2009JZ002);陕西省科学技术研究发展计划项目(编号:2009K02-06)

摘　　要：以淀粉为原料,利用丙烯酸和苯乙烯为单体通过接枝共聚反应合成一种主链亲水、支链疏水的淀粉类水煤浆分散剂,并通过多次单因素试验确定了最佳反应条件;分析了该分散剂对陕西彬长煤成浆过程中表观粘度与稳定性的影响;同时,研究了该分散剂与陕西彬长煤的作用机理。This paper focused on preparation of a new kind （CWS） It takes starch as raw material and is synthesized by of dispersant used grafted modification in coal water slurry with acrylic acid and styrene to form a structure with a hydrophilic main chain and hydrophobic side chains. The optimum con- ditions of synthesis were determined by a series of orthogonal experiments. The effects of the dispersant on apparent viscosity and stability of Binchang coal of Shaanxi were discussed, and the mechanism of inter- action between the dispersant and coal surfaces was analyzed.

关 键 词：淀粉接枝共聚物 水煤浆分散剂 合成 分散性 作用机理 

分 类 号：TQ423[化学工程] TQ536