Carboxylic butadiene-styrene latex and preparation method thereof

Abstract

The invention discloses carboxylic butadiene-styrene latex. The carboxylic butadiene-styrene latex is prepared from the components of styrene, butadiene, acrylic acid, seed glue, an emulsifier, a functional monomer, sodium pyrophosphate, mercaptan and a chelating agent ammonium persulfate. The invention further discloses a preparation method of the carboxylic butadiene-styrene latex, wherein an ultrasonic irradiation device is arranged on the side wall of a reaction kettle, during reaction, the power is 600-1000W, the ultrasonic frequency is 60-80khz, and the power density of sound waves can be 2-5w / cm<2>. The carboxylic butadiene-styrene latex has the beneficial effects that the reaction efficiency can be effectively improved, the side reactions can be reduced, the monomer conversion rate can be increased to over 99%, the reaction time can be shortened by 4-7 hours, the recycled monomer amount can be reduced greatly, the energy consumption is reduced, the damage on the residual monomer to the system stability and the environmental protection can be eliminated to the greatest extent, the performances such as tensile strength, abrasion resistance, bonding strength, washing resistance, alkaline resistance and pollution resistance are excellent, and the mechanical stability and the chemical stability are excellent.

Description

technical field [0001] The invention relates to the technical field of carboxylated styrene-butadiene latex, in particular to carboxylated styrene-butadiene latex and a preparation method thereof. Background technique [0002] With the rapid development of social economy, the per capita paper consumption in our country is increasing, reaching about 60 kg per capita. According to the statistics of the China Paper Association, from 2004 to 2013, the average annual growth rate of paper and cardboard production was 8.26%, and the average annual growth rate of consumption was 6.74%. 101.1 million tons, an increase of -1.37% over the previous year. The consumption was 97.82 million tons, an increase of -2.65% over the previous year, and the per capita annual consumption was 72 kg (1.361 billion people). Among the main products, the production volume of newsprint is 3.6 million tons, accounting for 3.56% of the total output of paper and paperboard, and the consumption is 3.62 mil...

AI Technical Summary

Problems solved by technology

[0004] Carboxylated styrene-butadiene latex is currently the most widely used latex in the production of coated paper, but these latexes have poor bonding strength and rheological properties and cannot meet the requirements; water resistance and heat resistance are relatively poor. After coating, The leveling performance of the coating is poor, resulting in uneven coating surface

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