Advantages of Acrylic Dispersants as Paper Coating Additives

There are many types of coating additives, and dispersants are one of them. Among dispersants, acrylic dispersants are one of the paper coating additives, and their role is very significant. Similarly, acrylic dispersants can also solve the problems of difficult dispersion and low fluidity of pigments, so they are widely used in industries such as papermaking, coatings, and printing. So next, let me introduce the specific advantages of acrylic dispersants in coating additives!

Due to the following advantages of acrylic dispersants as paper coating additives:

1. Acrylic dispersants have achieved high solid content coating, saving nearly 40% energy compared to the original air knife coating. In the high concentration range (above 58%), increasing the solid content of the coating by 1% can save nearly 2% energy.

2. Acrylic dispersants have achieved pipeline transportation and canned storage of pigments. When the solid content of the dispersant reaches 65%, it will become a dry pulp cake and cannot be canned or transported through pipelines. After adding organic dispersants, it can become a slurry with a viscosity lower than 1000mPals, which brings benefits to pipeline transportation and canning.

3. Acrylic dispersants improve the fineness of pigments and the stability of dispersion systems, enhancing the physical and mechanical properties of paper such as softness, strength, gloss, whiteness, and water retention.

When defoamer is added to the foam system, it will diffuse to the gas-liquid interface, making it difficult for the surfactant with foam stabilizing effect to recover the membrane elasticity. Defoamers can promote the drainage of liquid film, resulting in the bursting of bubbles. The discharge rate of foam can reflect the stability of foam. Adding a substance to accelerate the discharge of foam can also play a role in defoaming. Adding hydrophobic solid particles can cause bubbles to burst. Hydrophobic solid particles on the surface of bubbles will attract the hydrophobic end of surfactants, causing the hydrophobic particles to become hydrophilic and enter the water phase, thereby playing a role in defoaming.