Cationic styrene-acrylate surface sizing agent and preparation method thereof

Abstract

The invention discloses a cationic styrene-acrylate surface sizing agent and a preparation method thereof. The cationic styrene-acrylate surface sizing agent has a molecular structure shown in the specifications. The cationic styrene-acrylate surface sizing agent is prepared by performing soap-free emulsion polymerization reaction on polyvinyl alcohol 1788 serving as a dispersing agent, ammonium persulfate serving as an initiator, and styrene, methyl methacrylate, octadecyl acrylate, allyl alcohol and methacrylatoethyl trimethyl ammonium chloride serving as a mixed monomer. The prepared cationic styrene-acrylate surface sizing agent can form a strong ionic bond with electronegative paper fiber so as to improve the adhesion of the cationic styrene-acrylate surface sizing agent and corrugated base paper fiber and improve the ring crush strength of corrugated base paper; and simultaneously, the sizing agent forms a film layer on the surface of the corrugated base paper so as to improve the water resistance of the corrugated base paper.

Description

technical field The invention relates to the field of preparation of corrugated base paper surface sizing agents, in particular to a cationic styrene acrylate surface sizing agent and a preparation method thereof. Background technique With the rapid growth of my country's commodity export volume, the quality requirements for commodity packaging paper continue to increase, which puts forward higher requirements for my country's corrugated base paper manufacturers. Fresh fruits, food, vegetables, flowers and other agricultural products that are widely packaged and transported in corrugated cartons need to be sold by sea. It takes a long time for export commodities to be transported by sea. Due to the high humidity of the sea air, it is easy to cause the packaging cartons to absorb moisture and deform. In severe cases, the packaged commodities will be damaged and cause economic losses. At the same time, container technology is used in modern transportation, which requires frei...

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