How to choose paper wetting and dispersing agent
In order to improve the quality of paper, we will add some raw materials, isomeric alcohol ethoxylates is one of its raw materials, it can be used to make paper-making dispersants. As an important process of coating preparation, high-quality China Isomeric alcohol ethoxylates can be found online. For efficient selection, we need to consider the following requirements for the selection of dispersants.
Isomeric alcohol ethoxylate is used as a paper dispersant to promote good dispersion of papermaking fibers and excellent paper formation at low addition levels, improve pulp formation and paper softness, and increase paper strength. In paper coating applications, papermaking dispersants have high dispersion efficiency, stable coating viscosity, less foam, non-toxic, non-corrosive, can increase the solid content of coatings, have good fluidity and scrub resistance, and can maintain gloss not easy Molding. Paper dispersants can also increase papermaking speed, save beating time, reduce energy consumption, and have significant economic benefits.
How to choose paper dispersant
The choice of dispersant is mainly in variety and dosage. Among them, the former is the difficulty in the selection of dispersant. The choice of dispersant varieties must meet two basic requirements:
The dispersant is compatible with the applied system and the dispersant has the ability to disperse the pigments.
The type of dispersant should be able to meet specific performance requirements.
What factors should be considered when choosing a dispersant?
We should pay attention to the following factors:
Coatings are divided into several major systems such as solvent-based, water-based, and powder based on different media. In general, the wetting and dispersing agent used is not universal.
Pigments required for coating are also classified into many types such as organic and inorganic as well as alkaline and acidic. Different pigments have different properties, and each pigment requires a different wetting agent and dispersant. Inorganic pigments such as calcium carbonate, talc, titanium dioxide, iron red, and iron yellow. These polar molecular structures easily interact with acidic groups such as carboxylic acids, phosphoric acid and sulfuric acid functional groups.
Generally, anionic types such as carboxylate are used. Type, phosphate, sulfonate, etc. For organic pigments, aromatic groups can be very effective. Dispersants containing aromatic groups (such as phenyl and naphthyl) are particularly helpful for long-term stability of the dispersion.
In a coating system, the additives used are generally not only wetting and dispersing agents, but also leveling agents, defoamers, etc., so compatibility is extremely important. Some wetting and dispersing agents have strong emulsifying properties, which may cause the defoamers to emulsify and lose their defoaming ability. Pay attention to compatibility, which is conducive to the balance of the formula, so that the overall performance of the product can be taken into account.
Base material (ie resin)
Different resin systems have different wetting properties for pigments, so there are some restrictions on the choice of wetting and dispersing agents.
Dispersants also have non-ionic surfactants. If you are using China nonionic surfactant Isomeric Alcohol Ethoxylates or China Isomeric alcohol ethoxylates, you can contact Luckstone committed to manufacturing chemical products that improve paper textiles.