聚四氟乙烯基磁性液体的制备及在井口密封中的应用

四氟

聚四氟乙烯基磁性液体的制备及在井口密封中的应用
Preparation and Application in Shaft Top Sealing of  Polytetrafluoroethene-based Magnetic Liquid
作　　者：孙维民 樊沙沙 赵丽军 史桂梅

Sun Weimin Fan Sasa Zhao Lijun Shi Guimei （College of Science, Shenyang University of Technology, Shenyang Liaoning 110870, China）

机构地区：沈阳工业大学理学院,辽宁沈阳110870

出　　处：《润滑与密封》 CA 2011年第36卷第10期 81-83页,共3页

Lubrication Engineering

基　　金：辽宁省自然科学基金资助项目（2008221014）

摘　　要：用电弧放电法，在30％C2H2、70％Ar的混合气氛中制备Fe-Ni合金纳米粒子。利用Fe-Ni合金纳米粒子作为磁性粒子、油酸为表面活性剂、聚四氟乙烯乳液和少量硅油、硅脂的混合液为基液制备高黏度聚四氟乙烯基磁性液体。制备的聚四氟乙烯基磁性液体在25℃时的黏度为6～30Pa·s，在85℃时的黏度为1～20Pa·s，室温下饱和磁化强度为18．26～39．66A·m^2／kg。将制备的聚四氟乙烯基磁性液体应用于油井井15密封，有效密封时间比原密封结构提高50％以上。

Fe-Ni alloy nanoparticles were prepared by arc discharge evaporating Fe-Ni alloy in 30% C2H2 and 70% Ar atmosphere. Magnetic liquid with high viscosity was prepared with Fe-Ni alloy nanoparticles as magnetic particle, oleic acid as surfactant, miscible liquids of polytetrafluoroethene and little silicone oil and silicone grease as base solution. The viscosity of magnetic liquid is 6 - 30 Pa·s at 25 ℃ and 1 - 20 Pa·s at 25 ℃. The saturation magnetization of magnetic liquid is 18.26 - 39.66 A· m^2/kg at room temperature. The magnetic liquid and sealing technology were applied to gap sealing of shaft top. The results show that efficiency of sealing is increased by over 50%.

关键词：聚四氟乙烯 磁性液体 井口密封
polytetrafluoroethene ; magnetic liquid ; seal of shaft top ;

分类号：TB743 [工业技术 > 一般工业技术 > 真空技术 > 真空材料]

全文快照：2011)10—081—3 Preparation and Application in Shaft Top Sealing of P0lytetranu0r0ethene-based M agnetic Liquid Sun Weimin Fan Sasa Zhao Lijun Shi Guimei ．(College of Science，Shenyang University of Technology，Shenyang Liaoning 1 10870，China) Abstract：Fe—Ni alloy nanoparticles were prepared by arc discharge evaporating Fe—Ni alloy in 30％C2 H2 and 70％Ar atmosphere．