AEM5700 textile antimicrobial agent will give superior durability to the treated substrate and has a unique protection function against microbial antimicrobial, which can be used in the dyeing process and finishing process before fiber fabric treatment to prevent the harm caused by microorganisms and prolong the service life of the fabric.
Synthesize vinyl acetate and acrylic emulsion, polymerization temperature 62℃, use Naz Sz O.-Fe(NH&SO: 2-HOCH, SO2Na as the initiator, the dosage is 0.5%, 0.002% and 0.028% of the monomer amount respectively. 2 of them /3Na2S.O: and all Fe(NH SO)) and part of the emulsifier are added to the reactor first, and the remaining 1/3NazSzO: dripped with the monomer, and added sodium formaldehyde sulfite at the same time. When the monomer conversion rate reaches 99.5%, 0.015% tert-butyl hydroperoxide of the monomer is added to further reduce the free monomer content in the emulsion.
The influence of the amount of initiator on the emulsion polymerization reaction In emulsion polymerization, the amount of initiator mainly affects the polymerization rate, the number of latex particles per unit volume and the nucleation time. If the bond growth occurs entirely in the micelles, then the polymerization rate will be proportional to the number of latex particles, and the initiator should have the same dependence on the two. In fact, they are just similar, not the same. Moreover, when the monomer and emulsifier are different, the amount of initiator depends on the polymerization rate and the number of latex particles. In general, the amount of initiator is large, montan ester wax the polymerization reaction rate is fast, the number of latex particles per unit volume is large, and the nucleation time is short. However, if the amount is too much, the reaction rate is too fast, and the released polymerization heat cannot be discharged in time, causing the temperature to rise, and the reaction cannot be controlled. Therefore, the amount of initiator is generally between 0.2% and 0.7% of the monomer amount.
The average molecular weight of the emulsion polymerization product is determined by the time interval between two free radicals successively entering the human latex particles, and generally has nothing to do with the amount of initiator. However, when the amount of initiator is too much, it will also cause a decrease in the relative molecular weight of the polymer.
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