Polymer toner suspension high shear disperser

How to manufacture toner by chemical methods has been developed for at least 30 years. This research method includes suspension polymerization, dispersion polymerization, lotion polymerization, lotion or emulsifier coagulation, microcapsule type, and various interfacial polymerization. At present, polymeric toner has been replaced by many terms, such as: chemical toner, chemical toner, polymeric toner, toner polymer, in situ polymeric toner, suspended polymeric toner, lotion polymeric toner, latex agglomerated toner, controllable caking, gel encapsulated toner, microencapsulated toner, encapsulated toner, microencapsulated encapsulated toner, microencapsulated encapsulated toner, and so on. There are many different types of polymerized toner. The ownership of most manufacturing methods belongs to their * * * and manufacturers, and is protected by huge institutions around the world.

Due to the ability of polymerized toner to achieve smaller particles, its particle size distribution is narrower. A toner particle product and other particle group chargesIn terms of distribution, crushing has homogeneous properties. Traditional manufacturing methods cannot achieve a high level of uniformity and homogeneity. Traditional toner size and surface additives are relativelyThe uneven distribution and shape transform into non-uniform electrostatic charge properties, coupled with the influence of other factors, resulting in various defects of traditional tonerAnd limitations. Especially the single component development process requires fast and uniform toner charging performance. The improvement of aggregating toner is completely beneficial for this printing process. The control of the shape of the toner also plays a certain role in improving the uniformity of toner charging. Similar shaped toner particles can also be treated using the same method. The more homogeneous the shape and composition of the toner, the more stable its performance will be; The more stable the performance of the toner is; The better the printing quality.

Aggregated toner actually refers to the synthesized tiny toner. There are many basic production methods of polymeric toner suspension polymerization, lotion/emulsion coagulation, chemical milling and polyester (extended) polymerization (PXP). From a chemical perspective, this process is a basic polymerization process. The use of other non polymerized chemical components, especially pigments, has a significant impact on the formation of the final product. The differences in properties of different pigments, carbon black, quinolone, phthalocyanine dyes, etc. all affect polymerization. Indeed, different pigments within the same category also affect the polymerization process, and incorrect pigment portions can lead to polymerization termination and residual monomers. Aggregation is carried out at high temperatures and stirred at specific rates and times. The process conditions vary depending on the form of the ink powder. After completion of polymerization, a suspension polymerization toner preparation method can be prepared by cleaning, filtering, drying, and mixing with ultrafine particle additives (such as silica). The method includes the following steps: preparing an aqueous dispersion of wax coated colorants with an average particle size of less than 1 micron; Add the above-mentioned coloring agent wax aqueous dispersion to the monomer oil phase for water squeezing and phase transfer, so that the coloring agent wax particles are transferred from the water phase to the monomer oil phase containing the charge control agent; Add a suspension dispersion containing electrolytes and stir to blend, allowing the residual coloring agent wax particles to completely migrate from the aqueous phase to the oil droplet particles; After high-speed shear suspension granulation, the monomer oil droplet particles are converted into polymer particles by heating and polymerization. After cleaning, filtering, drying, and adding silica, the polymerized toner of the present invention is obtained This method improves the uniformity and stability of wax and coloring agent dispersion, thereby obtaining suspension polymerized toner with sharp particle size distribution, and improving the charging and environmental stability of the toner

A method for preparing suspension polymerized toner, characterized by the following steps: 1) adding pigment, wax, crosslinking agent, and cationic rigid resin to the monomers that make up the toner core resin, grinding and dispersing to obtain a monomer oil phase dispersion; The cationic rigid resin is formed by using a solvent as a reaction medium, adding cationic monomers, high Tg comonomers, initiators, and molecular weight control agents to the solvent through solution polymerization reaction, and then removing the solvent. The Tg range of the cationic rigid resin is 80-100 ° C, the weight average molecular weight is 5000-50000, and the cationic monomers account for 1-10% wt of the total weight of the cationic rigid resin; 2) After blending the above-mentioned oil phase dispersion with an aqueous dispersion at a certain oil-water ratio, it is suspended and granulated by high-speed shearing, transferred to a reactor, and heated to completely convert the monomer oil droplet particles into polymer particles. Then, the product is washed by adding acid, alkali, and a large amount of water, and the pH value of the filtrate used for cleaning is controlled. After filtration, drying, and external treatment, the polymerized toner is obtained

Grinding and dispersing machine is a high-tech product composed of colloid grinding and dispersing machines.

The first level consists of three-level sawtooth protrusions and grooves with increasing precision. The stator can be infinitely adjusted to the desired distance between the rotors. Under enhanced fluid turbulence. The groove can change direction at each level.
The second stage is composed of a stator. The design of the dispersing head also effectively meets the needs of substances with different viscosities and particle sizes. The difference in the design of the stator and rotor (emulsifying head) between online and batch machines is mainly due to the requirements for conveying performance. It is particularly important to note that the difference between coarse precision, medium precision, fine precision, and other types of working heads is not only the arrangement of specified rotor teeth, but also an important difference in the geometric characteristics of different working heads. The width of the slot and other geometric features can alter the different functions of the stator and rotor working heads.

The following is a model table for reference:

Polymer toner suspension high shear disperser