PHMS/BA/VAc共聚乳液的研究

Study on phms/BA/VAc copolymer emulsions

采用乳液滴加法将含氢聚甲基硅氧烷 (PHMS)、丙烯酸丁酯 (BA)和醋酸乙烯酯 (VAc)进行乳液共聚 ,制得了稳定的PHMS/BA/VAc聚合物乳液。讨论了PHMS和N—羟甲基丙烯酰胺 (NMA)的用量对聚合物乳液的表面张力、离心稳定性及粒径大小的影响。结果表明 :随着PHMS用量的增加 ,乳液的表面张力减小 ,平均粒径增大 ,稳定性提高 ;随着NMA用量的增加 ,平均粒径增大 ,在一定用量范围内 ,聚合物乳液的离心稳定性提高。

The copolymer emulsion of PHMS/BA/VAc was prepared by emulsion dropping method. The affect of PHMS and NMA amount on the surface tension, stability of the polymer emulsion and particle size of latex was discussed. The results showed that with increasing the amount of PHMS and NMA, the surface tension decreases, the particle size become larger and stability of emulsion increasing.