纳米PSMA-AM/SiO_2复合材料的制备及在稠油降凝降黏中的应用  

Preparation of nano-sized PSMA-AM/SiO_2 composite material and application in pour point and viscosity depressing of heavy oil

作　　者：张宏民[1] 姜仁龙[2] 祁新宇[2] 杨明 毕玉琦 于帅[1] 于萍[1] 张长桥[1] 

机构地区：[1]山东大学化学与化工学院,济南250061 [2]山东省标准化研究院,济南250100 [3]山东省质量认证中心,济南250014

出　　处：《化工新型材料》2015年第11期210-212,共3页New Chemical Materials

基　　金：国家重点基础研究发展计划(973计划)资助项目(2008CB617508)

摘　　要：通过溶液聚合的方法,制备了纳米PSMA-AM/SiO2复合材料。采用红外光谱(FT-IR)、热重分析(TG)、扫描电子显微镜(SEM)和接触角测试等对其结构和性质进行表征,并将其应用于大庆高蜡稠油,进行降凝和降黏性能测试。结果表明:纳米PSMA-AM/SiO2复合材料接枝率为39.52%,疏水性能优异,在有机介质中能均匀稳定分散,能使稠油凝点降低6℃,黏度降低72.1%(40℃),降凝降黏效果优异。A novel nano-silica composite material flow improver for heavy oil was prepared.The way was introducing steary methacrylate（SMA）and acrylamide（AM）copolymer onto the surface of silica nanoparticles by pretreatment using silane coupling agent（γ-methacryloxypropyl trimethoxy silane,KH570）followed by solution polymerization.The structure and property of modified nano-silica particles were characterized and analyzed by FTIR,TG,water contact angle testing and SEM.Its pour point depressing and viscosity reducing effect for Daqing high-wax heavy oil was studied.The results showed that its organic groups grafting ratio reached 39.52% and it performed good hydrophobic properties.Because the material had both nanometer effect and the function of organic long chain containing polar group,it could change wax＇s crystallization behavior and prevented colloid and asphaltene forming large-sized aggregate.It could reduce the pour point and viscosity（40℃）of Daqing high-wax heavy oil for 7℃and 72.1% respectively.So it had high industrial application value.

关 键 词：纳米复合材料 二氧化硅 表面改性 溶液聚合 稠油 降凝 降黏 

分 类 号：TE39[石油与天然气工程—油气田开发工程] TB332[一般工业技术—材料科学与工程]