Organic silicon modified acrylate emulsion and preparation method thereof

The invention relates to organic silicon modified acrylate emulsion and a preparation method thereof. A core-shell structure synthesis method is adopted for preparation, a core layer/shell layer glass transition temperature is designed to be -30- -25 DEG C/ 0-5 DEG C and lower than conventional core-shell emulsion. The emulsion comprises core-shell emulsion monomers, initiator accounting for 0.4-0.6% of the total mass of the monomers, composite emulsifier accounting for 2.5-4.5% of the total mass of the monomers, pH (potential hydrogen) buffering agent accounting for 0.4-0.6% of the total mass of the monomers and the balance deionized water. The emulsion preparation method includes (1) pre-emulsifying, (2) core-layer emulsion preparation, and (3) core-shell emulsion preparation. The emulsion which is aqueous emulsion is environment-friendly and high in stability, bonding power and tensile strength, has functions of softening, smoothening and the like for surface treatment of fabrics and the like, and is widely applicable to the fields of spinning, papermaking, leather, painting, water-based ink and the like.