The action process of dispersant
Solid particle dispersion process The dispersion process of solid particles in the medium is generally divided into three stages.
Wetting of solid particles Wetting is the most basic condition for the dispersion of solid particles. To disperse solid particles evenly in the medium, each solid particle or particle group must first be fully wetted.
Dispersion or fragmentation of ion clusters. In this process, the particle clusters must be dispersed or fragmented, which involves the separation of the particle clusters and the internal solid-solid interface. Different types of surfactants play different roles in the dispersion or fragmentation of particle clusters.
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Effect of dispersants on coatings
Glossiness: If the gloss of the paint is to be high, the particles contained in it should not be larger than 5 microns, and the ink should not even be larger than 1 micron. Polymer dispersants can reduce the large particles formed in the paint and help the paint improve its gloss.
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What are the performance indicators of carbon black?
Particle size
The particle size of carbon black represents the original particle size of carbon black. It is tested by an electron microscope and is the average value of a certain number of particle sizes.
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Carbon Black FAQs
What is carbon black?
Carbon black (also called carbon black) is a colloidal particle similar to a sphere formed by incomplete combustion or thermal cracking of hydrocarbon compounds (liquid or gaseous). It exists in the form of aggregates and appears as pure black powder or granular. The particle size, structure and surface activity of products vary greatly depending on raw materials, manufacturing methods and production processes. The main component of carbon black is carbon, and also contains trace amounts of hydrogen, oxygen, ash and moisture.
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Characteristics of organic pigments and carbon black pigments
Organic pigments have bright colors, bright tones, and low toxicity.
They are increasingly used in the coatings industry. Especially the emergence of some high-performance organic pigments makes it possible to prepare various high-performance coatings.
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Recommended dosage of carbon black dispersant
The determination of the added amount usually requires consideration of the following factors:
Type and quality of carbon black: Different types and qualities of carbon black may require different amounts of Dongfugui dispersant. For example, the amounts of low-pigment carbon black, high-pigment carbon black, and conductive carbon black are completely different.
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