Cationic benzene acrylic papermaking surface sizing agent

Abstract

The invention relates to a cationic benzene acrylic papermaking surface sizing agent. The cationic benzene acrylic papermaking surface sizing agent is prepared from the following components in percentage by weight: 10-18% of a dispersing agent, 5-10% of an oxidizing agent, 0.01-2% of an initiating agent, 5-10% of a hard monomer, 1-5% of a soft monomer, 0.5-3.5% of a functional monomer, 0.5-1.5% of a cationic monomer, 1-5% of acid, 40-80% of water, 1-3% of a modifying agent and 0.01-0.5% of a crosslinking agent. A preparation method of the cationic benzene acrylic papermaking surface sizing agent concretely comprises the following steps: (1) preparing the initiating agent and water to obtain aqueous solution according to ratio; (2) mixing the dispersing agent with water in ratio, adding the oxidizing agent and the initiating agent aqueous solution accounting for 50% of the total usage amount, heating to the temperature of 80-90 DEG C, carrying out heat preservation reaction; (3) fully mixing the soft monomer, the hard monomer and the functional monomer for later use; and (4) adding the acid and cationic monomer after heat preservation is finished, adding the modifying agent and the crosslinking agent at the same time, and dropwise adding the monomer mixture and the rest initiating agent aqueous solution.

Description

technical field [0001] The invention relates to the technical field of surface sizing agents, in particular to a cationic styrene-acrylic papermaking surface sizing agent. Background technique [0002] The purpose of surface sizing of paper is to improve the surface properties of paper and the printing performance of paper. With the development of papermaking technology, the performance requirements of paper are getting higher and higher. Synthetic styrene-acrylic surface sizing agents are mainly composed of starch and its modified products, PVA, PMA, etc. Starch has the advantages of abundant raw materials, low cost, non-toxic and pollution-free use, and can be chemically modified. application. Among them, cationic tapioca starch is a new type of starch derivative, which has a good use effect in the paper industry, but the modified starch has a large molecular weight, and the water resistance and surface strength of the paper after sizing cannot meet the requirements of sp...

AI Technical Summary

Problems solved by technology

Among them, cationic tapioca starch is a new type of starch derivative, which has a good use effect in the paper industry, but the modified starch has a large molecular weight, and the water resistance and surface strength of the paper after sizing cannot meet the requirements of special paper types. And the disadvantages of complex production process and high sizing cost