交联型聚丙烯酰胺堵水剂的制备

series of micron-sized crosslinked polyacrylamide microspheres (PAMCMS) were prepared by inverse suspension polymerization using acrylamide as hydrophilic monomer, N,N-methylenebisacrylamide (Bis-A) as crosslinker, span-80 as dispersion stabilizer, potassium persulfate (KPS) as initiator and cyclohexane as the continuous phase. The morphology, particle size and size distribution of the PAMCMS were characterized by using optical microscopy and scanning electron microscopy (SEM). The influences of the stirring speed, amount of KPS and span-80, ratio of cyclohexane to water on the particle sizes of the PAMCMS were studied respectively. The swelling properties of the PAMCMS were investigated based on the experiment of volume change. The PAMCMS may be used as water plugging materials in oil exploitation.