腐植酸与碳酰胺接枝改性的研究  

STUDY ON THE MODIFICATON OF HUMIC ACID BY GRAFT POLYMERIZATION WITH CARBAMIDE

作　　者：李善祥[1] 晁兵[1] 

机构地区：[1]中国科学院山西煤炭化学研究所

出　　处：《燃料化学学报》1995年第3期266-271,共6页Journal of Fuel Chemistry and Technology

摘　　要：研究了褐煤及降解的风化煤腐植酸与碳酰胺（ＣＡ）─甲醛（Ｆ）体系的接枝聚合。考察了影响反应的主要因素。接枝产物（ＨＡ－ＣＡ）的红外，ＴＧ，ＤＴＡ表征，和对膨润土吸附性能及Ｚｅｔａ电位的影响，揭示了ＨＡ接枝碳酰胺的改性具有良好的应用前景。Graft polymerization of carbamide(CA)-formaldehyde(F)with humic acid(HA)from lignite and depolymerized weathered coal was inverstigated.Effects of pH,temp.and CA/HA ratio on the graft polymerization were examined.The product of graftpolymerization has was characterized by IR,TG,DTA,adsorbtion to bentonate and Zetaelectric potenial in the bentonate solution. The results show that modification of humic acidby graft polymerization with carbamide having good prospects in application.

关 键 词：风化煤 褐煤 腐植酸 碳酰胺 接枝 改性 煤 

分 类 号：TQ530[化学工程—煤化学工程]