Interpenetrating polymer network core-shell emulsion and preparation method thereof

Abstract

The invention discloses an interpenetrating polymer network core-shell emulsion and a preparation method thereof. The core-shell emulsion is prepared from a monomer, emulsifiers, an initiator, a PH regulating agent and water. The core-shell emulsion is characterized in that the monomer consists of a functional monomer and a mixed monomer, wherein the mixed monomer consists of a vinyl monomer and butyl acrylate, and the functional monomer consists of diacetone acrylamide, adipic dihydrazide, divinyl benzene and a reactive type silicon monomer; the emulsifiers refer to a nonylphenol-free reactive type emulsifier SR-10, a fatty phosphoric acid ester emulsifier and an exclusive non-ion reactive type emulsifier; the initiator refers to sodium persulfate; the PH regulating agent refers to sodium hydrogen carbonate; water refers to deionized water. The preparation method comprises the following steps: (1) in a raw material ratio, preparing a monomer mixed liquid for later use, preparing deionized water and an initiator and stirring to form an initiator mixed liquid for later use; and (2) polymerizing the emulsion. The core-shell emulsion and the method have the beneficial effects of being environmental-friendly and safe, the technology is simple, the scrubbing-resisting capability and the pigment filler bearing capability are strong and the stability of electrolyte and freeze thawing is high.

Description

technical field [0001] The invention belongs to the field of chemical industry, in particular to a core-shell type silicone styrene-acrylic emulsion and a preparation method thereof. Background technique [0002] Silicone styrene-acrylic emulsion is mainly used in water-based adhesives, fabric treatment, water-based architectural coatings, etc. At present, the widely used silicone-styrene-acrylic emulsion in China is mainly composed of monomers, emulsifiers, initiators, pH regulators, siloxane monomers Composed of body and water, commonly used monomers include vinyl monomers, acrylic acid and its derivatives, and methacrylic acid and its derivatives. It is prepared by the traditional emulsion production process, and the traditional emulsion polymerization process includes the following steps: induction→initiation→micelle disappearance→monomer droplet disappearance→chain termination. The polymer molecular chain obtained by the traditional polymerization process is a linear p...

AI Technical Summary

Problems solved by technology

The polymer molecular chain obtained by the traditional polymerization process is a linear polymer chain with few branched chains. It is difficult to prepare special and special-shaped polymer particles, which limits the application of emulsion polymers in new technology fields.

Using the traditional process of emulsion polymerization, the emulsion is dried at room temperature to form a film slowly, and the commonly used emulsifiers are not environmentally friendly, which has a great impact on the water resistance of the emulsion coating film.

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