Nanocellulose/polyacrylamide composite emulsion and preparation method thereof

The invention provides a nanocellulose/polyacrylamide composite emulsion and a preparation method thereof. The method comprises steps as follows: a first mixed liquid is obtained by mixing a dispersant and an emulsifier; a second mixed liquid is obtained by mixing acrylamide, a substance A, microcrystalline cellulose, persulfate, N,N'-methylene bisacrylamide and water; in a stirring state, a third mixed liquid is obtained by adding the first mixed liquid to the second mixed liquid; the third mixed liquid reacts to produce the nanocellulose/polyacrylamide composite emulsion. The nanocellulose/polyacrylamide composite emulsion prepared with the method mainly comprises nanocellulose and polyacrylamide compounds, and the composite emulsion has microgel performance of nanocellulose and polyacrylamide, has good heat resistance and salt tolerance and can effectively increase the petroleum recovery ratio. 本发明提供了种纳米纤维素/聚丙烯酰胺复合乳液及其制备方法，该方法包括以下步骤：分散剂和乳化剂混合得到第混合液；丙烯酰胺、物质A、微晶纤维素、过硫酸盐、N，N'-亚甲基双丙烯酰胺和水混合得到第二混合液；在搅拌状态下，第二混合液中