Fully Combine The Process To Determine The Concentration Of Super Absorbent Polymer.

< p > > a href= "http://? www.91se91.com/news/index_c.asp" > super absorbent polymer < /a > various kinds and different product forms.

There are many classification methods, which are generally classified in four ways according to the raw materials, hydrophilic methods, cross-linking methods and product forms.

According to the sources of raw materials, they can be divided into three categories: modified starch, modified starch, including starch graft acrylonitrile hydrolysate, starch graft acrylic acid, starch grafted acrylamide, starch carboxymethyl compound and so on. Modified cellulose mainly includes cellulose grafted acrylonitrile hydrolysate, cellulose grafted acrylic acid, < a href= "http://? www.91se91.com/news/index_c.asp" > cellulose < /a > graft acrylamide, cellulose carboxymethyl compound; synthetic polymer, mainly including cross linked polyacrylate, crosslinked polyacrylamide, acrylic acid ester and vinyl acetate copolymer hydrolysate, polyvinyl alcohol and anhydride cross-linking copolymer.

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< p > if classified according to < a href= "http:// www.91se91.com/news/index_c.asp" > hydrophilic < /a >, it can be divided into polymerization of hydrophilic monomers, copolymerization of hydrophobic monomers and hydrophilic monomers, hydrolysis of cyano and fat groups. According to the cross-linking method, it can be divided into crosslinking agents, crosslinking, radiation crosslinking, and introducing hydrophobic groups or crystal structures into hydrophilic polymers. According to the product form, they can be divided into powder, fibrous, sheet, film and foam.

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< p > water absorbent has only two types: anionic and nonionic. The water absorbency of the anionic absorbent is high, but the salt tolerance is poor. Nonionic super absorbent has the characteristics of fast water absorption, good salt tolerance, but low water absorbency.

Therefore, the production of super absorbent polymers through these two ways is actually not "high performance".

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< p > at the same time, the absorbability of high water absorbent nonwovens is closely related to the concentration of superabsorbent.

From the performance of high water absorbent nonwovens, the higher the concentration of high water absorbent, the better. However, due to the performance of super absorbent polymer and the limitation of production process, the concentration of high absorbent can not be too high.

Because the concentration is too high, the super absorbent polymer will become gelatinous, which can not be used in the production process, and will also increase the cost. The low concentration can not achieve the expected goal. At present, the concentration of super absorbent polymer used by domestic enterprises is about 0.05%.

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< p > the researchers at Technical University of Berlin in Germany have announced a new way of impregnation.

The so-called impregnation method is to make the super absorbent agent into the dispersing liquid, then apply it to the surface of the fabric by means of brushing or spraying, or immerse the fabric in this dispersion, so that the superabsorbent can be fixed in the voids of the fabric.

This approach will be the latest and most authoritative solution for adding super absorbent polymers.

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