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Different agent mechanism

Posted on July 6, 2023 By admin No Comments on Different agent mechanism

Differentians are an additive widely used in the particle system. The main role is to disperse solid particles evenly and prevent it from re -aggregating. The mechanism of the scattered agent can be explained in the following aspects:

Adsorption effect: The molecule of the active compound (such as the surfactant) in the dispersant will be adsorbed on the surface of the particles to form a layer of adsorption film to prevent the mutual adsorption and gathering between the particles. This adsorption effect can change the interaction force between particles, cause rejection between them, and effectively disperse particles.

Charge effect: Some components in the dispersant (such as an ion or ionic surface active agent) can exchange the charge exchange effect with the surface of the particles. By adsorbing the electrical molecule on the surface of the particles, the dispersant can make the particles with homosexual charge, thereby generating static exclusion power to prevent the aggregation of the particles.

Space level resistance effect: The volume of the dispersant molecule itself is large. When it dissolves or is scattered in the medium, it will occupy a certain space. This spatial level resistance effect will increase the distance between the particles, reduce the contact and interaction between the particles between the particles, thereby preventing the gathering of particles.

Stability: Differentians can change the stability of the particle system. By regulating the types, concentrations and pH values of the dispersant, the stable state of granular dispersion can be achieved. For example, some decentrals can form a beam structure within a certain concentration range, wrap the particles and maintain its decentralized state.

In summary, the dispersant mainly achieves the dispersion of particles through the mechanism of adsorption, charge effect, spatial block resistance, and stability. These mechanisms work together, so that solid particles are evenly scattered in the medium, improving the stability of the system, and widely used in the fields of coatings, inks, pigments, colloid solutions and other fields.

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