氟碳型两性聚丙烯酰胺絮凝剂的制备及性能  

Preparation and Properties of Fluorocarbon-Type Amphoteric Polyacrylamide Flocculant

作　　者：朱胜庆[1] 李小瑞[1] 李培枝[1] 

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

出　　处：《石油化工》2009年第11期1219-1224,共6页Petrochemical Technology

基　　金：国家自然科学基金项目(50673055)

摘　　要：疏水单体全氟辛基乙基丙烯酸酯(FM)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)、丙烯酰胺(AM)和甲基丙烯酰氧乙基三甲基氯化铵(DMC)通过自由基胶束共聚合成了P(FM-AMPS-AM-DMC)四元共聚物,即氟碳型两性聚丙烯酰胺(FPAM)絮凝剂。实验结果表明,FPAM水溶液中存在强烈的分子间缔合作用;在共聚温度50℃、共聚时间8 h、引发剂w(过硫酸钾)=0.3%(占单体总质量)、w(AMPS)=15.0%(占单体总质量)、w(DMC)=8.0%(占单体总质量)、w(FM)=0.3%(占单体总质量)、n(乳化剂OP-10):n(FM)=10的条件下,合成的FPAM絮凝剂用于净化洗煤水、污泥脱水等均具有良好的效果,与无机絮凝剂聚合氯化铝复配的絮凝效果更好。Fluorocarbon-modified polyacrylamide--P （FM-AMPS-AM-DMC） quatemary copolymer （FPAM）, used as amphoteric flocculant, was prepared by free radical micellar copolymerization from acrylamide （ AM）, 2-acrylamide-2-methyl propane sulfonic （ AMPS ）, methacryloyloxyethyl trimethyl ammonium chloride （ DMC ） and 2- （ perfluorooctyl ） ethyl acrylate （ FM ） by redox initiation. The influences of every monomer contents on properties of FPAM aqueous solutions were investigated. The aqueous solution was hydrophobic and showed strong intermolecular association. Under optimal conditions： reaction temperature 50 ℃, reaction time 8 h, FM 0. 3%, AMPS 15.0%, DMC 8.0%, initiator K2S208 0.3% （all mass fractions of the monomers and initiator based on total monomer mass）, mole ratio of emulsifier OP-10 to FM 10, the obtained FPAM flocculant can be used satisfactorily in treating coal-washing wastewater and adaptable to broad range of temperature and pH. It can also be used in sludge-dewatering. It was noticeable that the composite of FPAM with conventional inorganic polyaluminium chloride used as flocculant showed synergetic effect, performance of which was even more promising than each of its ingredient.

关 键 词：氟碳型两性聚丙烯酰胺 自由基胶束共聚 絮凝剂 洗煤水 污泥脱水 

分 类 号：TQ316.322[化学工程—高聚物工业]