Application of Gold powder dispersant

Gold powder dispersants play a vital role in the application of gold powder, and their main applications are reflected in the following aspects:

1. Improve dispersibility

Gold powder, especially ultrafine gold powder, has the characteristics of small particle size, large specific surface area, and many surface active sites. These characteristics make gold powder easy to agglomerate in liquid. Dispersants can be adsorbed on the surface of gold powder particles to form a protective film, effectively reducing the interaction force between particles and preventing agglomeration, thereby improving the dispersibility of gold powder in liquid.

2. Enhance stability

By adding an appropriate amount of dispersant, the dispersion state of gold powder in slurry or coating can be optimized to make it more uniform and stable. This helps to extend the shelf life of the product and ensure that the performance of gold powder will not decrease due to agglomeration or precipitation during use.

3. Improve product performance

Well-dispersed gold powder can give full play to its electrical conductivity, thermal conductivity and other properties. In the fields of electronic slurry, conductive coatings, etc., the uniform dispersion of gold powder is crucial to improving the electrical and thermal conductivity of the product. In addition, dispersants can also help gold powder form a good directional arrangement in the coating, thereby improving the optical effect and metallic texture of the coating.

4. Adapt to different application scenarios

Different types of dispersants can be selected according to different application scenarios. For example, in aqueous systems, polymer dispersants such as polyacrylates and polyvinyl alcohol provide long-lasting dispersion stability; silane coupling agents are a good choice when it is necessary to enhance the binding force between metal powder and organic matrix. In addition, for nano-scale gold powder, superdispersants can significantly improve dispersion efficiency and reduce agglomeration.

5. Simplify the process flow

The use of gold powder dispersants can simplify the dispersion process of gold powder and improve work efficiency. For example, when preparing gold powder dispersion, a uniform and stable gold powder dispersion can be obtained by adding an appropriate amount of dispersant and properly stirring and ultrasonic treatment, without the need for complex grinding and dispersion operations.

6. Storage and transportation

Dispersants can also help gold powder maintain stability during storage and transportation. By adding dispersants and sealing them, the performance of gold powder can be effectively prevented from deteriorating due to agglomeration or precipitation during storage.