Phosphosilicic acid coated carbon black as well as preparation method and application thereof

• Main Authors: YAN PUXUAN, WANG MENGYI, LU JIANGRONG, WANG YUFENG
• Format: Patent
• Language: Chinese; English
• Published: 28.02.2023
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PHYSICS; POLISHES; PREPARATION OF CARBON BLACK; TESTING; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention discloses phosphosilicic acid coated carbon black as well as a preparation method and application thereof. The preparation method of the phosphosilicic acid coated carbon black comprises the following steps: dispersing carbon black in absolute ethyl alcohol, adjusting the system to be acidic, and then adding a silane coupling agent to modify the carbon black to obtain modified nano carbon black; and putting the obtained modified nano carbon black in an inert atmosphere for phosphorization to obtain the primary coated phosphosilicic acid coated carbon black. Furthermore, the method further comprises the step of repeatedly modifying and phosphorizing the obtained phosphosilicic acid coated carbon black subjected to primary coating, and the number of times of repeating the steps of modifying and phosphorizing is 1-3. The phosphosilicic acid coated carbon black prepared by adopting the method is extremely low in self volume conductivity, so that when the phosphosilicic acid coated carbon black is ap