水基聚氨酯丙烯酸酯/氧化石墨烯复合乳液的制备与表征

Preparation and characterization of water-based polyurethane acrylate/graphene oxide composite emulsion

以天然石墨为原料,采用改进的Hummers法制备了氧化石墨,进而超声剥离制备了氧化石墨烯.通过原位聚合法制备了系列水基聚氨酯丙烯酸酯/氧化石墨烯复合乳液,并研究了不同氧化石墨烯含量对乳胶膜热稳定性和吸水率的影响.实验结果表明:制备了氧化程度较高的氧化石墨烯,随着氧化石墨烯含量的增加,胶膜的吸水率先减小后增大.当氧化石墨烯的含量为0.5%时,胶膜的热稳定性最好.

Using flake graphite as a raw material,graphite oxide was prepared by modified Hummers method,and graphene oxide was obtained by ultrasonic process.A series of waterbased polyurethane acrylate/graphene oxide composite emulsion was prepared by in situ polymerization,and the effects of different graphene oxide content of the latex film thermal stability and water absorption rate were researched.The results showed that：preparing a high degree of oxidation of graphene oxide,the water absorption of film decreases first,then increases with increasing graphene oxide content.When the graphene oxide content was 0.5%,the thermal stability of the film was preferably.