Application analysis of defoaming agent for papermaking paste

Color paste is one of the key raw materials in the paper manufacturing process. It is a mixture of cellulose, fillers, additives, etc. Cellulose is the most important component in the papermaking process. It is used to improve the gloss, strength and printing performance of paper. The presence of a large amount of foam will affect the stability and quality of papermaking paste. In order to solve this problem, scientists and engineers developed defoaming agents for papermaking pulp.

Papermaking paste defoaming agents have excellent defoaming effects. They can destroy the surface film in the foam to cause it to burst, and reduce the formation and accumulation of bubbles in the liquid. Defoaming agents prevent the entry of air by changing the surface tension and viscosity of the liquid, effectively reducing the generation and persistence of foam. In addition, defoaming agents can also improve the stability of the color paste, prevent the deposition and aggregation of particles, and make the color paste suspension more uniform and stable.

Papermaking paste defoaming agents are widely used in all aspects of the papermaking industry.

1. During the pulp preparation process, adding an appropriate amount of defoaming agent can effectively reduce the generation of foam and reduce the introduction of bubbles during the mixing process, thereby improving the quality and stability of the pulp.

2. During the pulp transportation and filtration process, the use of defoaming agents can prevent foam from clogging and eroding equipment, and improve the reliability and stability of the process.

3. During the paper coating and printing process, the application of defoaming agents can also reduce the impact of foam on the paper surface and improve the coating and printing effects.

The amount of defoaming agent added needs to be reasonably controlled, and an appropriate amount of defoaming agent should be added without affecting the quality of the paper to avoid overuse causing other problems. Finally, regularly check and evaluate the effectiveness and performance of the defoaming agent, and make adjustments and improvements based on actual conditions to ensure its continued effectiveness.