A dispersant is a chemical substance that stabilizes the dispersion of solid particles or droplets in a liquid, preventing their aggregation and precipitation. The main functions of dispersants are as follows:
Disperse solid particles: Dispersants can evenly disperse solid particles in the liquid, preventing them from gathering together to form clumps or precipitates. This can maintain the uniformity and stability of the liquid, keeping the solid particles in a suspended state.
Stable colloidal solution: Dispersants can form colloidal particles in the solution, which are charged and generate electrostatic repulsion through the action of surfactants, preventing the aggregation and precipitation of colloidal particles. This can maintain the stability of the colloidal solution and extend its storage life.
Preventing sagging and ink dispersion: Adding dispersants to a liquid can increase its viscosity and viscosity, hindering the settling and separation of droplets. This is crucial for certain processes such as ink preparation and coating liquid dispersion to ensure uniform distribution and stability of droplets.
Improving the flowability of dispersions: Dispersants can reduce the friction and cohesion between particles, improving the flowability of dispersions. This is of great significance for process operations such as liquid transportation, spraying, and injection, as it can reduce energy consumption and improve work efficiency.
Damping effect: Dispersants can form a covering layer between solid particles, reducing the mutual friction and collision of solid particles, and reducing the energy loss of particle motion. This is important for some processes such as high-speed mixing, oscillation or spray, which can reduce mechanical wear and reduce energy loss.
Overall, the function of dispersants is to achieve uniform dispersion and stable state of solid particles or droplets in liquids, preventing their aggregation and precipitation. This is of great significance for the operability of liquids, product quality, and process effectiveness. The use of appropriate dispersants can improve production efficiency, reduce waste and costs, and ensure product consistency and stability.