Styrene acrylic emulsion is obtained by emulsion copolymerization of styrene and acrylic monomers. Next, we will introduce the formula needed for styrene acrylic emulsion technology, hoping to bring some help to you.
The raw material needed for the production of styrene acrylic emulsion is more common, which is made of reaction monomer, emulsifier, initiator, reducing agent, water and so on.
The raw materials used in the production of 1000 kilogram styrene acrylic emulsion are as follows:
Styrene: 218.8 kilograms;
Butyl acrylate: 238.4 kilograms;
Methyl methacrylate: 19.56 kilograms;
Methacrylic acid: 9.64 kilograms;
Protective colloid: 8.36 kilograms;
Emulsifier OS:18.85 kg;
Sodium bicarbonate: 0.5 kilograms;
Ammonium persulfate: 2.4 kilograms;
Deionized water: 499 kilograms.
The chemical stability of emulsion formed by the above formula, excellent products can improve the washing resistance, and has excellent performance, can be widely used in high-grade interior wall latex paint, latex paint, lacquer, paint and other products in the back cover.
What are the factors that affect the performance of styrene acrylic emulsion?
The soft / hard monomer monomer ratio: the ratio of soft and hard monomer on emulsion latex particle size and the particle size distribution is not affected, but the hard monomer content is increased the glass transition temperature high, the film's cohesive force and improve the rigidity, so that the lap shear strength of emulsion increased.
The amount of crosslinking agent: the increase of the amount of crosslinking agent will make the lap shear strength of emulsion increase obviously, but when the dosage is over 40%, the lap shear strength will hardly change.
The dosage of emulsifier: with the increase of the dosage of emulsifier, the shear strength of the lap of the emulsion is constant.