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SBR latex in the paper industry

2016/11/12 10:06:41

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Since the 1940s, SBR latex has been used as a coating adhesive in the production of processed paper. SBR latexes for paper processing account for about 60%    of the production of benzene latexes. With the advancement of printing equipment, modernization, and high speeds, the performance of paper-coating adhesives has become more and more demanding.

SBR latex is a synthetic latex with different properties and uses depending on the styrene content, emulsifier, and polymerization temperature, and is used as a coating adhesive for paper processing, with a milky white liquid, a solid content of 45%-50% and a    pH value of 9.0-10.5.

Butadiene latex for coated paper has a pH value between 3-7, depending on the styrene content, emulsifier, polymerization temperature, etc. Butadiene latex is a stable emulsion made from butadiene and styrene by low-temperature polymerization. SBR butadiene latex asphalt modifier is based on modified asphalt, modified emulsified asphalt characteristics of specially developed road projects, widely used in the preparation of various spray types, mixing type with modified emulsified asphalt, as well as high-grade pavement, bridge decks, and other road projects, such as micro-surface, thin slurry seal, sticky layer of oil asphalt modification and roofing, underground caverns and other waterproofing projects Modification of materials.

Application of styrene butadiene latex in papermaking and the impact on product quality:

It is mainly used to improve the tensile strength, tear strength, water resistance, oil resistance, and softness of paper and cardboard.

In-machine surface sizing of paper or board after forming to improve its physical properties and printability, etc.

As an adhesive for the coating of paper or board inside or outside the machine to improve the strength of the coating, the gloss of the paper surface, the print gloss, the printability and to make the paper or board wear-resistant, flex-resistant, water-resistant, oil-resistant and other properties.

Impregnation, such as the production of certain special industrial paperboards, is carried out by impregnation in the latest to obtain certain desired special properties.

As the latest emulsion polymerization system is very complex, affecting many factors, in actual production, according to the site-specific environment, the production of coated paper varieties, quality requirements, the type of coating machine, drying and finishing conditions, and many other aspects of starting, in a large number of practical work to summarise the understanding of the various characteristics of the latex, the strengths, and weaknesses, choose the most economical and most suitable latex varieties. With the high speed of the printing industry, the paper industry has put forward higher requirements, and to a certain extent, it depends on the further improvement of the coating latex to meet the requirements of the final market.


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