丙烯酸酯-有机硅氧烷接枝共聚胶乳的研究

Study on the Graft Copolymer Latex of Acrylate and Siloxane

通过加入一定量的接枝剂，用一次投料法合成了稳定的丙烯酸酯－有机硅氧烷接枝共聚胶乳，考察了有机硅含量、接枝剂用量对聚合反应及胶膜性能的影响。结果表明：有机硅含量不仅严重影响聚合反应和胶膜的力学性能，而且对乳液的稳定性有重要影响。有机硅单体用量为１０％、接枝剂用量为００８％、聚合反应时间为５ｈ时胶乳的成膜性及胶膜性能最好。

Graft emulsion copolymerization of acrylate and siloxane was carried out with batch process via simultaneous radical and ring-opening mechanism. The results showed that polymerization behavior and final latex stability and mechanical properties of latex film strongly depend on siloxane content.