A kind of PVAc sand-fixing emulsion with different AM content was synthesized by semi-continuous emulsion polymeriza-tion using vinyl acetate(VAc)as main monomer in the presence of and 2-ethylhexyl acrylate(EHA)and acrylamide(AM)as func-tional monomers. And then the stability,particle size,viscosity and sand-fixing properties of the prepared emulsions were tested. The results showed that the prepared sand-fixing emulsions had good stability,proper particle size,small viscosity and good sand-fixing property and water retention property. And the sand-fixing strength and water retention rate were increased with the increasing of AM content.%以醋酸乙烯酯(VAc)为主单体,丙烯酸异辛酯(EHA)和丙烯酰胺(AM)为功能单体,采用半连续乳液聚合的方法,合成了一类具有不同AM含量的PVAc固沙乳液,并测定了具有不同AM含量的固沙乳液的稳定性、粒径和粘度,以及固沙性能.结果表明,该固沙乳液具有良好的稳定性、粒径适中、粘度小,固沙性能和保水性能优良,且随着AM含量的增加,固沙强度和保水率也随之增大.
展开▼
