摘要：

以衣康酸、丙烯磺酸钠、马来酸为单体,采用微波辐射法合成了IA-MA-SAS三元共聚物。分别利用热重、透光率测试、静态阻垢法和电导法测定分析了其热稳定性、分散氧化铁性能和阻垢性能。通过扫描电镜和X衍射观察分析沉积物形貌,探讨了阻垢机理。结果表明:IA-MA-SAS具有良好的阻垢性能、热稳定性和分散氧化铁性能;其阻垢机理主要有晶格畸变、螯合和分散作用;与聚天冬氨酸有很好的协同效应,阻垢率可达95%以上。

关键词: 三元共聚物, 微波合成, 性能, 阻垢机理, 衣康酸

Abstract:

A new kind of green scale inhibitor,IA-MA-SAS terpolymer,has been synthesized with itaconic acid,acrylic sodium sulfonate and maleic anhydride as monomers by microwave radiation method. Its thermal stability,iron oxide distributing capacity,and scale inhibiting capacity for calcium carbonate(CaCO₃) scale have been mea- sured and analyzed by thermal gravimetry,transmission tests,static scale inhibition and electric conduction method. Furthermore,the morphology and crystal structure of sediments are analyzed by scanning electron microscope and X-ray diffraction,and the scale inhibiting mechanisms discussed. The results show that IA-MA-SAS has good scale inhibiting capacity for CaCO₃ scale,good thermal stability and good dispersion capacity for Fe₂O₃. And its scale inhibition mechanism is related to lattice distortion effect,chelation and dispersive effect. In addition,it has good syn- ergistic effect with polyaspartic acid. Its scale inhibiting rate can be higher than 95%.

Key words: terpolymer, microwave synthesis, capacity, scale inhibiting mechanism, itaconic acid

中图分类号: 

• X703.1