基于特定性能高稳定化的丙烯酸酯无皂乳液的合成OA

To address the challenge of balancing high solid content and low viscosity in soap-free emulsion technology,a semi-continuous seed emulsion polymerization method was employed to synergistically regulate the latex particle size and molecular weight,thereby preparing a soap-free acrylate emulsion with specific properties.Based on a custom-synthesized seed emulsion,the compounding system of polymerizable emulsifiers was systematically screened,and functional monomers were introduced to modify the emulsion.The results indicated that the optimal emulsifier compounding system consisted of 1.000 g of SR-10 and 0.015 g of RHODASURF 6530.Under these conditions,the soap-free emulsion achieved a solid content of 61.5%,a viscosity of 132 mPa·s,and a coagulum content of only 0.8%,demonstrating a stable polymerization process.After the addition of 1%vinyl neodecanoate(VV-10),the emulsion viscosity decreased to 87 mPa·s,and the water resistance of the resulting film was significantly improved.The obtained emulsion exhibited a well-defined core-shell structure,appropriate particle size and molecular weight distribution,excellent heat resistance,and the combined advantages of high solid content,low viscosity,and high stability.